JP2019027242A - Steel frame structure - Google Patents

Abstract

To provide a steel frame structure capable of installing new steel studs on an existing steel beams of an existing building while ensuring silent and clean circumstances requiring no shaving work free from shaving noises, shaving vibrations or generation of a large amount dust.SOLUTION: A steel frame structure comprises: a first connection plate 13 which is disposed on a concrete slab 28 formed on an existing steel beam 11; a second connection plate 20 disposed below the existing steel beam 11; a first connection bolt 15 inserted in a through hole 29 connecting the first connection plate 13 a first extension member 16, thereby a new steel first stud 12 is connected to the existing steel beam 11; and a second connection bolt 22 connecting the second connection plate 20 and a second extension member 21, thereby a new steel second stud 19 is connected to the existing steel beam 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a steel structure formed from an existing steel beam, a new steel frame first stud, and a new steel frame second stud.

  Install steel structures by installing new steel inter-columns (H-shaped steel) that extend vertically upward to existing steel beams (H-shaped steel) of existing buildings such as high-rise buildings, high-rise buildings, middle-rise buildings, low-rise buildings, and factories. As an example of the construction work, a concrete slab (concrete frame) constructed on the upper flange of the H-shaped steel forming the existing steel beam is attached to the existing steel beam (H After exposing the upper flange of the shape steel) and placing the connecting plate attached to the lower end of the H-shaped steel forming the new steel stud on the upper flange of the H-shaped steel, It fixes to a flange with a volt | bolt and a nut, or a connection board is fixed to the upper flange of H-shaped steel by welding. In addition, the steel structure which attached the new steel-frame pillar (H-shaped steel) to the existing steel beam (H-shaped steel) of the existing building is disclosed (refer patent document 1 and patent document 2).

JP 2004-225351 A JP 2016-31209 A

  In concrete slab suspending work, an electric hammer (suspended hammer) is used to hang concrete on an existing steel beam. However, unsteady noise or unsteady vibration is generated. Sound and suspension vibration propagate to surrounding rooms and common areas, and the quiet environment of the surrounding rooms and common areas is destroyed. In addition, a large amount of dust is generated in the suspension work, and the clean environment in the room or common place where the suspension work is performed is destroyed. In many cases, the suspension work is performed at midnight or a holiday when a person returns home, and it is difficult to perform the work during the daytime on weekdays, and the construction work of the steel structure cannot be performed by effectively using the daytime time on weekdays. Therefore, in the case of a suspension work, a steel structure in which a new steel inter-column (H-shaped steel) is attached to an existing steel beam (H-shaped steel) of an existing building cannot be efficiently constructed in a short time.

  In addition, there are cases in which the strength of the concrete frame is reduced or the concrete frame may be deformed due to the suspension work, and the original shape before the suspension work may not be maintained, and restoration work for the suspended part is required. Therefore, it takes time and labor to construct a steel structure. When joining the connecting plate attached to the lower end of the H-shaped steel forming the new steel pillar to the upper flange of the H-shaped steel forming the existing steel beam by welding, sparks are scattered by the welding work, paying close attention Even if welding is performed, there is still a risk of fire and it is difficult to ensure safety. In addition, it is not preferable to perform welding work in a super high-rise building, a high-rise building, a middle-rise building, or a low-rise building that hurts by fire extinguishing work when a fire occurs. Furthermore, the strength of the steel member may be reduced or the steel member may be deformed by the heat of welding.

  The object of the present invention is that no lifting work is required, and there is no generation of hanging noise and vibration and generation of a large amount of dust, and the existing steel beam of the existing building is installed in the existing steel beam in a state in which a quiet and clean environment is maintained. It is in providing the steel structure which can attach. Another object of the present invention is that work can be performed during the daytime on weekdays, and the new steel frame columns are attached to the existing steel beam of the existing building in a short time and efficiently using the daytime time on weekdays. It is to provide a steel structure that can be used. Another object of the present invention is that it is not necessary to hang concrete, and it is not necessary to carry out restoration work on the hanger, but also to prevent the deterioration of the strength of the concrete frame and the deformation of the concrete frame while preventing the existing steel frame of the existing building from being built. An object of the present invention is to provide a steel structure capable of attaching a new steel inter-column to a beam. Another object of the present invention is that it does not require welding work, can prevent a decrease in the proof stress of the steel member due to the heat of welding and the deformation of the steel member, and can be used for an existing steel beam of an existing building without risk of fire. An object of the present invention is to provide a steel structure capable of safely attaching a new steel frame pillar.

  The premise of the present invention for solving the above problems is a steel structure in which a new steel inter-column is connected to an existing steel beam of an existing building.

  The first feature of the steel structure of the present invention based on the above premise is that the new steel inter-column is located below the new steel first inter-column and the new steel first inter-column extending vertically upward from the existing steel beam. The first steel plate is formed from a new steel frame second stud extending vertically downward from the beam, and the steel structure is attached to the lower end of the first steel frame first stud and extending horizontally, and the upper end of the new steel frame second stud. And a second connecting plate that extends in the horizontal direction and is inserted into a through-hole drilled in a concrete frame constructed on the existing steel beam and extends vertically from the first connecting plate toward the existing steel beam. A concrete frame including a first connection bolt and a second connection bolt extending in a vertical direction from the existing steel beam toward the second connection plate. In the steel structure, the first connection plate is constructed on the existing steel beam. Placed in the second The connecting plate is placed under the existing steel beam, and the first connecting plate and the existing steel beam are connected by the first connecting bolt inserted through the through hole, so that the new steel frame first stud is connected to the existing steel beam. Then, the second connecting plate and the existing steel beam are connected by the second connecting bolt, whereby the new steel frame second stud is connected to the existing steel beam.

  As an example of the steel structure of the present invention having the first feature, the steel structure includes a first extension member attached to the existing steel beam and a second extension member attached to the existing steel beam, In the steel structure, the first connection plate and the first additional member are connected by the first connection bolt inserted through the through hole, so that the new steel frame first stud is connected to the existing steel beam, and the second connection bolt. By connecting the second connecting plate and the second additional member by the above, the new steel frame second stud is connected to the existing steel beam.

  As another example of the steel structure of the present invention having the first feature, the first steel structure first pillar is a first H-shaped steel extending in the vertical direction, and the existing steel beam extends in the horizontal direction. 2 H-shaped steel, and the new steel frame second stud is a third H-shaped steel extending in the vertical direction. In the steel structure, the first connecting plate forms the first steel frame first stud H. The second H-section steel, which is attached to the lower end of the section steel, the second connecting plate is attached to the upper end of the third H-section steel forming the new steel frame second stud, and the first additional member forms the existing steel beam The first connecting plate is attached to the lower flange side of the second H-shaped steel that is attached to the upper flange side of the second H-shaped steel forming the existing steel beam and is inserted into the through hole. And the first additional member are connected to each other, so that the first H-section steel forming the new steel frame first stud is already present. A third steel plate is connected to the upper flange of the second H-shaped steel forming the steel beam, and the second connecting plate and the second additional member are connected by the second connecting bolt, thereby forming a new steel frame second stud. Are connected to the lower flange of the second H-shaped steel forming the existing steel beam.

  The second feature of the steel structure of the present invention based on the above premise is that the new steel inter-column is located below the new steel first inter-column and the new steel first inter-column extending vertically upward from the existing steel beam. The first steel plate is formed from a new steel frame second stud extending vertically downward from the beam, and the steel structure is attached to the lower end of the first steel frame first stud and extending horizontally, and the upper end of the new steel frame second stud. And a second connecting plate that extends in the horizontal direction and is inserted into a through hole drilled in a concrete frame constructed on an existing steel beam and extends vertically from the first connecting plate toward the second connecting plate. In the steel structure, the first connection plate is disposed on the concrete frame constructed on the existing steel beam, the second connection plate is disposed below the existing steel beam, and includes a through hole. The first connecting bolt inserted through Accordingly, the first connecting plate and the existing steel beam are connected, and the existing steel beam and the second connecting plate are connected by the first connecting bolt, so that the new steel frame first intermediate column and the new steel frame second intermediate column are formed. It is connected to the existing steel beam.

  As an example of the steel structure of the present invention having the second feature, the steel structure includes a first extension member attached to the existing steel beam and a second extension member attached to the existing steel beam, In the steel structure, the first connecting plate and the first additional member are connected by the first connecting bolt inserted through the through hole, and the second connecting plate and the second additional member are connected by the first connecting bolt. Thus, the new steel frame first inter-column is connected to the existing steel beam, and the new steel frame second inter-column is connected to the existing steel beam.

  As another example of the steel structure of the present invention having the second feature, the first steel structure first pillar is a first H-shaped steel extending in the vertical direction, and the existing steel beam extends in the horizontal direction. 2 H-shaped steel, and the new steel frame second stud is a third H-shaped steel extending in the vertical direction. In the steel structure, the first connecting plate forms the first steel frame first stud H. The second H-section steel, which is attached to the lower end of the section steel, the second connecting plate is attached to the upper end of the third H-section steel forming the new steel frame second stud, and the first additional member forms the existing steel beam The first connecting plate is attached to the lower flange side of the second H-shaped steel that is attached to the upper flange side of the second H-shaped steel forming the existing steel beam and is inserted into the through hole. And the first extension member are connected to each other, and the second extension member and the second extension member are connected to each other by the first connection bolt. By connecting to the connecting plate, the first H-shaped steel forming the new steel frame first stud is connected to the upper flange of the second H-shaped steel forming the existing steel beam, and the new steel frame second stud is The 3rd H-section steel to form is connected with the lower flange of the 2nd H-section steel which forms the existing steel beam.

  As an example of the steel structure of the present invention having the first and second features, the steel structure is inserted into the through hole of the concrete frame and extends between the first connecting plate and the existing steel beam. In the steel structure, the first connecting bolt is inserted into the steel sleeve, and the first connecting bolt and the steel sleeve are resistant to bending stress generated at the joint between the existing steel beam and the new steel first inter-column.・ It forms a means of transmission.

  As another example of the steel structure of the present invention having the first and second features, a filler in which the steel structure is filled in a through hole of a concrete frame inserted through a steel sleeve and hardened in the through hole is used. In the steel structure, the gap between the through hole and the outer peripheral surface of the steel sleeve and the gap between the connecting bolt and the inner peripheral surface of the steel sleeve is at least a gap between the connecting bolt and the inner peripheral surface of the steel sleeve. The first connecting bolt, the steel sleeve, and the filler hardened in the through hole are integrated with the first connecting bolt, the steel sleeve, and the filler hardened in the through hole. A bending resistance / transmission means that resists bending stress generated at the joint with the first stud is formed.

  As another example of the steel structure of the present invention having the first and second features, the steel structure is filled in a through hole of a concrete frame through which a first connecting bolt is inserted and hardened in the through hole. In the steel structure including the material, the gap between the through hole and the first connecting bolt is filled with the filler, and the first connecting bolt is integrated with the hardened filler in the through hole. The bending material hardened in step (b) forms bending resistance / transmission means that resists bending stress generated at the joint between the existing steel beam and the new steel first stud.

  As another example of the steel structure of the present invention having the first and second features, the steel structure is attached to a first connecting plate and is inserted into an insertion bar and a concrete frame extending downward from the first connecting plate. In the steel structure, the insertion rod is inserted into the insertion hole drilled in the concrete frame, and the insertion hole is filled with the filler. The insertion rod is integrated with the filler hardened in the insertion hole, and the insertion rod and the filler hardened in the insertion hole are sheared against the shear stress generated at the joint between the existing steel beam and the new steel first stud. Forms resistance and transmission means.

  As another example of the steel structure of the present invention having the first and second features, the steel structure is drilled in an insertion bolt and a concrete frame that are removably screwed or inserted into the first connecting plate. In the steel structure, the exposed portion of the insertion bolt exposed downward from the first connecting plate is inserted into the insertion hole drilled in the concrete frame. In addition, the insertion hole is filled with a filler, the insertion bolt is integrated with the filler hardened in the insertion hole, and the insertion bolt and the filler hardened in the insertion hole are formed between the existing steel beam and the new steel frame first stud. Shear resistance / transmission means against the shear stress generated in the joint is formed.

  As another example of the steel structure of the present invention having the first and second features, the steel structure is inserted into an insertion hole drilled in the first connecting plate and an insertion hole drilled in the concrete frame. In the steel structure, the metal column is inserted into the insertion hole of the first connecting plate and the insertion hole of the concrete frame, and the metal column is at the joint between the existing steel beam and the first steel frame first column. Shear resistance and transmission means against the shear stress that occurs are formed.

  As another example of the steel structure of the present invention having the first and second features, the steel structure is filled in the insertion hole of the first connecting plate into which the metal column is inserted and the insertion hole of the concrete frame. In the steel structure, the insertion hole and the insertion hole are filled with the filler, and the gap between the insertion hole and the insertion hole and the outer peripheral surface of the metal column is filled with the filler. The metal pillar is integrated with the insertion hole and the filler hardened in the insertion hole, and the metal pillar and the filler hardened in the insertion hole and the insertion hole are sheared at the joint between the existing steel beam and the new steel first inter-column. Forms shear resistance and transmission means to resist stress.

  As another example of the steel structure of the present invention having the first and second features, the steel structure has a top portion of a metal column inserted into the insertion hole of the first connecting plate and the insertion hole of the concrete frame. Including a holding plate that is disposed in the vicinity thereof and is fixed to the first connecting plate and presses the top of the metal column. In the steel structure, the metal column and the holding plate are joined to the existing steel beam and the first steel frame first column. Shear resistance and transmission means against the shear stress generated in the part is formed.

  As another example of the steel structure of the present invention having the first and second features, the steel structure is detachably attached to the first connecting plate and connects the first connecting plate to the concrete frame. And a leg portion embedded in the insertion hole of the concrete housing, and a plate-like base connected to the leg portion, the member including a member and a filler filled in the insertion hole drilled in the concrete housing and cured in the insertion hole And a connecting bolt that is detachably screwed to the first connecting plate and the plate-like base to connect the plate-like base and the first connecting plate. Is filled, the legs of the connecting member are inserted into the insertion holes of the concrete frame, the connecting member is integrated with the filler hardened in the inserting hole, and the hardening is hardened in the connecting member and the inserting hole. Preparative forms a shear resistance and transmission means to resist shear stress generated at the junction of the new steel first stud with the existing steel beam.

  As another example of the steel structure of the present invention having the first and second features, the shear resistance / transmission means is formed in the vicinity of the central portion of the new steel frame first stud, and the bending resistance / transmission means is provided. , Formed in the vicinity of both sides of the new steel frame first stud.

  As another example of the steel structure of the present invention having the first and second features, the shear resistance / transmission means is formed along the first H-section steel web forming the new steel frame first stud. The bending resistance / transmission means is formed in the vicinity of one flange and the vicinity of the other flange of the first H-section steel forming the new steel frame first stud.

  According to the steel structure of the present invention having the first feature, there is provided a first connecting plate having a through hole drilled in a concrete frame constructed on an existing steel beam and attached to the lower end of a new steel frame first stud. The first connecting plate and the existing steel frame are arranged on the concrete frame constructed on the existing steel beam, the second connecting plate is arranged below the existing steel beam, and is inserted into the through hole of the concrete frame. By connecting the beam, the new steel frame first stud is connected to the existing steel beam, and by connecting the second connecting plate and the existing steel beam by the second connecting bolt, the new steel frame second stud is installed. Since it is connected to the steel beam, a through hole through which the first connection bolt is inserted is drilled in the concrete frame, and the first connection plate and the existing steel beam are connected by the first connection bolt inserted through the through hole, By two connecting bolts It is only necessary to connect the second connecting plate and the existing steel beam, and it is not necessary to carry out the lifting work. Therefore, it is possible to prevent unpleasant hanging noise, hanging vibration and generation of a large amount of dust. In this state, the new steel frame first stud and the new steel frame second stud can be attached to the existing steel beam of the existing building. Steel structures can prevent unpleasant hanging noise and vibration, and a large amount of dust, so work can be done during daytime hours on weekdays, and daytime hours on weekdays can be used effectively. The new steel frame first stud and the new steel frame second stud can be attached to the existing steel beam of the existing building efficiently in a short time. Since steel structures do not need to be hung from concrete, it is possible to save time and labor for restoration work on the hanger, and to reduce the strength of the concrete frame and prevent deformation of the concrete frame. It is possible to efficiently attach the new steel frame first stud and the new steel frame second stud to the existing steel beam in a short time. Since the steel structure is connected to the existing steel beam using the first connection bolt, the new steel frame first space column is connected to the existing steel beam using the second connection bolt. It does not require welding work, can prevent the deterioration of the strength of steel members and the deformation of steel members due to the heat of welding, and there is no risk of fire occurrence, such as high-rise buildings, high-rise buildings, mid-rise buildings, low-rise buildings, factories, etc. The new steel frame first stud and the new steel frame second stud can be safely attached to the existing steel beams of all existing buildings.

  The first connecting plate and the first additional member are connected by the first connecting bolt inserted into the through hole, including the first additional member attached to the existing steel beam and the second additional member attached to the existing steel beam. As a result, the new steel frame first stud is connected to the existing steel beam, and the second connecting plate and the second extension member are connected by the second connecting bolt, so that the new steel frame second stud is connected to the existing steel beam. The connected steel structure has a through hole through which the first connection bolt is inserted in the concrete case, and connects the first connection plate and the first additional member by the first connection bolt inserted through the through hole. It is only necessary to connect the second connecting plate and the second additional member with the second connecting bolt, and since there is no need to carry out the lifting work, it is possible to prevent the generation of unpleasant hanging noise, hanging vibration and the generation of a large amount of dust. , Maintain a quiet and clean environment It can be attached to a new steel second stud and the new steel first stud in the existing steel beam of existing buildings with a state. The steel structure can save time and labor for restoration work on the hanger, can prevent the deterioration of the strength of the concrete frame and the deformation of the concrete frame, and work during the daytime on weekdays. The new steel frame first stud and the new steel frame second stud can be attached to the existing steel beam of the existing building efficiently in a short time by effectively using daytime on weekdays. In the steel structure, the first connecting plate and the first additional member are connected using the first connecting bolt, and the second connecting plate and the second additional member are connected using the second connecting bolt. Therefore, no welding work is required, the strength of the steel member can be prevented from being reduced by the heat of welding and the deformation of the steel member can be prevented, there is no risk of fire, and the existing steel beam first in any existing building The stud and the new steel frame second stud can be safely attached.

  The new steel frame first stud is the first H-section steel extending in the vertical direction, the existing steel beam is the second H-section steel extending in the horizontal direction, and the new steel frame second stud is extended in the vertical direction. A first steel plate is attached to the lower end of the first H-shaped steel forming the new steel frame first stud and the second connecting plate is a third H-shaped steel forming the new steel frame second stud. Attached to the upper end, the first additional member is attached to the upper flange side of the second H-shaped steel forming the existing steel beam, and the second additional member is under the second H-shaped steel forming the existing steel beam The first H-section steel that forms the new steel frame first stud is formed by connecting the first connecting plate and the first additional member by the first connecting bolt attached to the flange side and inserted through the through hole. It is connected to the upper flange of the second H-shaped steel forming the existing steel beam and is connected to the second series by the second connecting bolt. By connecting the plate and the second additional member, the third H-shaped steel forming the new steel frame second stud and the lower flange of the second H-shaped steel forming the existing steel beam are connected. The steel structure has a first connecting plate and a second connecting plate attached to the lower end of the first H-shaped steel by drilling a through hole through which the first connecting bolt is inserted into the concrete frame, and the first connecting bolt inserted through the through hole. The second connecting plate and the second H-shape, which are attached to the upper end of the third H-shaped steel by the second connecting bolt, while connecting the first additional member attached to the upper flange side of the H-shaped steel It is only necessary to connect the second extension member attached to the lower flange side of the steel, and it is not necessary to carry out the lifting work, so it is possible to prevent the generation of unpleasant hail noises, hail vibrations and large amounts of dust. The existing steel beam is shaped while maintaining a quiet and clean environment. The first H-shaped steel that forms the first steel frame first studs can be attached to the upper flange of the second H-shaped steel, and the new steel frame No. 2 is formed on the lower flange of the second H-shaped steel that forms the existing steel beam. A third H-section steel that forms two studs can be attached. The steel structure can save time and labor for restoration work on the hanger, can prevent the deterioration of the strength of the concrete frame and the deformation of the concrete frame, and work during the daytime on weekdays. The first H-section steel that can form the first steel pillar of the new steel frame in the second H-section steel that can form the existing steel beam of the existing building efficiently in a short time using the daytime time on weekdays effectively The third H-section steel that forms the new steel-frame second studs can be attached to the second H-section steel that forms the existing steel beam of the existing building efficiently in a short time. In the steel structure, the first connecting plate and the first additional member are connected using the first connecting bolt, and the second connecting plate and the second additional member are connected using the second connecting bolt. Therefore, it is possible to prevent a decrease in the proof stress of the steel member and the deformation of the steel member due to the heat of welding without the need for welding work, and there is no risk of fire occurrence. It is possible to safely attach the first H-shaped steel forming the new steel frame first stud to the H-shaped steel of the third, and to form the new steel frame second stud on the second H-shaped steel forming the existing steel beam. The H-shaped steel can be safely attached.

  According to the steel structure of the present invention having the second feature, the first connection plate attached to the lower end of the first steel frame first stud is disposed on the concrete frame constructed on the existing steel beam, and the second connection The plate is arranged under the existing steel beam, and the first connection plate and the existing steel beam are connected by the first connection bolt inserted into the through hole drilled in the concrete frame constructed on the existing steel beam. In addition, since the existing steel beam and the second connection plate are connected by the first connection bolt, the first steel frame and the second steel frame are connected to the existing steel beam. A through hole for inserting the first connecting plate and the existing steel beam by the first connecting bolt inserted through the through hole, and the second connecting plate and the existing steel beam by the first connecting bolt. Should be connected Since there is no need to carry out suspension work, it is possible to prevent the generation of unpleasant hanging noises and vibrations and the generation of a large amount of dust. The first stud and the new steel frame second stud can be attached. Steel structures can prevent unpleasant hanging noise and vibration, and a large amount of dust, so work can be done during daytime hours on weekdays, and daytime hours on weekdays can be used effectively. The new steel frame first stud and the new steel frame second stud can be attached to the existing steel beam of the existing building efficiently in a short time. Since steel structures do not need to be hung from concrete, it is possible to save time and labor for restoration work on the hanger, and to reduce the strength of the concrete frame and prevent deformation of the concrete frame. It is possible to efficiently attach the new steel frame first stud and the new steel frame second stud to the existing steel beam in a short time. In the steel structure, the new steel frame first stud is connected to the existing steel beam using the first connecting bolt, and the new steel frame second stud is connected to the existing steel beam using the first connecting bolt. Therefore, there is no need for welding work, and it is possible to prevent the deterioration of the strength of steel members and the deformation of steel members due to the heat of welding, there is no risk of fire occurrence, and high-rise buildings, high-rise buildings, mid-rise buildings, low-rise buildings, The new steel frame first stud and the new steel frame second stud can be safely attached to the existing steel beam of any existing building such as a factory.

  The first connecting plate and the first additional member are connected by the first connecting bolt inserted into the through hole, including the first additional member attached to the existing steel beam and the second additional member attached to the existing steel beam. In addition, the second connecting plate and the second extension member are connected by the first connecting bolt, so that the new steel frame first stud is connected to the existing steel beam, and the new steel frame second stud is connected to the existing steel beam. In the steel structure, the through hole through which the first connecting bolt is inserted is drilled in the concrete frame, and the first connecting plate and the first additional member are connected to each other by the first connecting bolt inserted into the through hole. It is only necessary to connect the second connecting plate and the second expansion member with a connecting bolt, and since there is no need to perform the lifting work, it is possible to prevent the generation of unpleasant hanging noise, hanging vibration and generation of a large amount of dust. And maintain a clean environment. It can be attached to a new steel second stud and the new steel first stud in the existing steel beam of existing buildings with a state. The steel structure can save time and labor for restoration work on the hanger, can prevent the deterioration of the strength of the concrete frame and the deformation of the concrete frame, and work during the daytime on weekdays. The new steel frame first stud and the new steel frame second stud can be attached to the existing steel beam of the existing building efficiently in a short time by effectively using daytime on weekdays. In the steel structure, the first connecting plate and the first additional member are connected using the first connecting bolt, and the second connecting plate and the second additional member are connected using the first connecting bolt. Therefore, no welding work is required, the strength of the steel member can be prevented from being reduced by the heat of welding and the deformation of the steel member can be prevented, there is no risk of fire, and the existing steel beam first in any existing building The stud and the new steel frame second stud can be safely attached.

  The new steel frame first stud is the first H-section steel extending in the vertical direction, the existing steel beam is the second H-section steel extending in the horizontal direction, and the new steel frame second stud is extended in the vertical direction. A first steel plate is attached to the lower end of the first H-shaped steel forming the new steel frame first stud and the second connecting plate is a third H-shaped steel forming the new steel frame second stud. Attached to the upper end, the first additional member is attached to the upper flange side of the second H-shaped steel forming the existing steel beam, and the second additional member is under the second H-shaped steel forming the existing steel beam The first connecting plate and the first additional member are connected by the first connecting bolt attached to the flange side and inserted through the through hole, and the second additional member and the second connecting plate are connected by the first connecting bolt. By being connected, the first H-shaped steel forming the new steel frame first stud forms the existing steel beam The steel frame is connected to the upper flange of the second H-shaped steel, and the third H-shaped steel forming the new steel frame second stud is connected to the lower flange of the second H-shaped steel forming the existing steel beam The structure has a through hole through which the first connecting bolt is inserted in the concrete housing, and a first connecting plate and a second connecting plate attached to the lower end of the first H-shaped steel by the first connecting bolt inserted into the through hole. The second connecting plate and the second H-shaped steel attached to the upper end of the third H-shaped steel by the first connecting bolt while connecting the first additional member attached to the upper flange side of the H-shaped steel. It is only necessary to connect the second extension member attached to the lower flange side, and since there is no need to carry out the hanger construction, it is possible to prevent the occurrence of unpleasant hail noises, hail vibrations and large amounts of dust, The existing steel beam is shaped while maintaining a quiet and clean environment. The first H-shaped steel that forms the first steel frame first studs can be attached to the upper flange of the second H-shaped steel, and the new steel frame No. 2 is formed on the lower flange of the second H-shaped steel that forms the existing steel beam. A third H-section steel that forms two studs can be attached. The steel structure can save time and labor for restoration work on the hanger, can prevent the deterioration of the strength of the concrete frame and the deformation of the concrete frame, and work during the daytime on weekdays. The first H-section steel that can form the first steel pillar of the new steel frame in the second H-section steel that can form the existing steel beam of the existing building efficiently in a short time using the daytime time on weekdays effectively The third H-section steel that forms the new steel-frame second studs can be attached to the second H-section steel that forms the existing steel beam of the existing building efficiently in a short time. In the steel structure, the first connecting plate and the first additional member are connected using the first connecting bolt, and the second connecting plate and the second additional member are connected using the first connecting bolt. Therefore, it is possible to prevent a decrease in the proof stress of the steel member and the deformation of the steel member due to the heat of welding without the need for welding work, and there is no risk of fire occurrence. It is possible to safely attach the first H-shaped steel forming the new steel frame first stud to the H-shaped steel of the third, and to form the new steel frame second stud on the second H-shaped steel forming the existing steel beam. The H-shaped steel can be safely attached.

  A steel sleeve is inserted into the through hole of the concrete frame and extends between the first connecting plate and the existing steel beam. The first connecting bolt is inserted into the steel sleeve, and the first connecting bolt and the steel sleeve are installed in the existing steel beam. The steel structure that forms bending resistance / transmission means against the bending stress that occurs at the joint between the new steel frame and the first steel pillar is an external force such as an earthquake acting on the existing structure, and the existing steel beam and the new steel frame When bending stress is generated at the joint with the first stud, the bending resistance / transmission means formed from the first connecting bolt and steel sleeve resists the bending stress, and the existing steel beam and concrete frame are newly installed. Smooth transmission of bending stress can be performed between the steel frame first studs.

  Including a filler filled in the through hole of the concrete frame inserted through the steel sleeve and hardened in the through hole; a gap between the through hole and the outer peripheral surface of the steel sleeve; and a gap between the connecting bolt and the inner peripheral surface of the steel sleeve; A gap between at least the connecting bolt and the inner peripheral surface of the steel sleeve is filled with the filler, and the first connecting bolt and the steel sleeve are integrated with the hardened filler in the through hole. The steel structure in which the sleeve and the filler hardened in the through hole form a bending resistance / transmission means that resists the bending stress generated at the joint between the existing steel beam and the new steel first stud is When an external force such as an earthquake acts and a bending stress is generated at the joint between the existing steel beam and the new steel first stud, it is formed from the first connecting bolt, the steel sleeve, and the filler hardened in the through hole. Flexural while resistance-transmitting means resists the bending stress, it is possible to perform a smooth transfer of bending stresses between the new steel first stud with the existing steel beams and concrete skeleton.

  The filler includes a filler filled in the through hole of the concrete frame through which the first connecting bolt is inserted and hardened in the through hole. The gap between the through hole and the first connecting bolt is filled with the filler, and the first connecting bolt is the through hole. A bending resistance / transmission means that is integrated with the filler hardened in step 1 and resists bending stress generated in the joint portion between the existing steel beam and the new steel first inter-column with the first connecting bolt and the filler hardened in the through hole. The formed steel structure has a first connecting bolt and a through-hole when an external force such as an earthquake acts on the existing structure and bending stress is generated at the joint between the existing steel beam and the new steel first stud. The bending resistance / transmission means formed from the filler hardened in step 1 can smoothly transmit the bending stress between the existing steel beam and concrete frame and the new steel first interstice while resisting the bending stress. it can

  An insertion hole that is attached to the first connecting plate and extends downward from the first connecting plate and a filler that is filled in the insertion hole drilled in the concrete housing and hardened in the insertion hole, and is drilled in the concrete housing. The insertion rod is inserted into the insertion hole, the filler is filled in the insertion hole, the insertion rod is integrated with the filler cured in the insertion hole, and the insertion rod and the filler cured in the insertion hole are connected to the existing steel beam. The steel structure that forms shear resistance and transmission means that resists the shear stress that occurs at the joint with the new steel frame 1st column, the external force such as earthquake acts on the existing structure, the existing steel beam and the new steel frame When shear stress is generated at the joint with the inter-column, the shear resistance / transmission means formed from the insertion rod inserted into the insertion hole and the filler hardened in the insertion hole resists the shear stress. Concri It is possible to perform a smooth transfer of shear stress between the bets skeleton and new steel first stud.

  An insertion bolt that is detachably screwed or inserted into the first connecting plate and a filler that is filled in the insertion hole drilled in the concrete housing and hardened in the insertion hole, and is inserted into the insertion hole drilled in the concrete housing. 1 The exposed portion of the insertion bolt that is exposed downward from the connecting plate is inserted, and the insertion hole is filled with a filler, and the insertion bolt is integrated with the cured filler in the insertion hole. The steel structure in which the hardened filler forms a shear resistance / transmission means against the shear stress generated at the joint between the existing steel beam and the new steel first stud, the external force such as earthquake is applied to the existing structure. When a shear stress occurs at the joint between the existing steel beam and the new steel first stud, it is formed from the exposed portion inserted into the insertion hole of the insertion bolt and the filler hardened in the insertion hole. While N resisting cross-resistance and transmission means that shearing stress, it is possible to perform a smooth transfer of shear stress between the concrete framework and new steel first stud.

  Including a metal column inserted into the insertion hole drilled in the first connecting plate and the insertion hole drilled in the concrete frame, and the metal column is inserted into the insertion hole of the first coupling plate and the insertion hole of the concrete frame, A steel structure in which a metal column forms a shear resistance / transmission means against the shear stress generated at the joint between the existing steel beam and the new steel first inter-column, external forces such as earthquakes act on the existing structure, When shear stress occurs at the joint between the existing steel beam and the new steel first inter-column, the shear resistance / transmission means formed from the insertion hole and the metal column inserted into the insertion hole resists the shear stress. Moreover, smooth transmission of shear stress can be performed between the concrete frame and the new steel frame first stud.

  The insertion hole of the first connecting plate into which the metal pillar is inserted and the insertion hole of the concrete frame are filled and hardened in the insertion hole, and the insertion hole and the insertion hole are filled with the filler, the insertion hole and The gap between the insertion hole and the outer peripheral surface of the metal column is filled with a filler, the metal column is integrated with the filler hardened in the insertion hole and the insertion hole, and the metal column, the filler hardened in the insertion hole and the insertion hole, Is a steel structure that forms shear resistance / transmission means against the shear stress generated at the joint between the existing steel beam and the new steel frame first stud. An external force such as an earthquake acts on the existing structure. When shear stress occurs at the joint between the beam and the new steel frame first inter-column, the shear resistance formed from the insertion hole and the metal column inserted into the insertion hole and the filler hardened at the insertion hole and insertion hole. Communicator There while resisting the shear stress, it is possible to perform a smooth transfer of shear stress between the concrete framework and new steel first stud.

  A metal column including a pressing plate disposed in the vicinity including the top of the metal column inserted in the insertion hole of the first connecting plate and the insertion hole of the concrete frame, and fixed to the first connecting plate and pressing the top of the metal column; The steel structure that forms a shear resistance / transmission means against the shear stress generated at the joint between the existing steel beam and the new steel first stud is applied to the existing structure by an external force such as an earthquake. When a shear stress occurs at the joint between the existing steel beam and the new steel first inter-column, the shear formed from the insertion hole, the metal column inserted into the insertion hole, and the pressing plate that holds the top of the metal column While the resistance / transmission means resists the shear stress, the shear stress can be smoothly transmitted between the concrete frame and the new steel frame first inter-column.

  A connecting member that is detachably attached to the first connecting plate and connects the first connecting plate to the concrete frame; and a filler that is filled in the insertion hole drilled in the concrete case and hardened in the insertion hole. Is formed from a leg portion embedded in the insertion hole of the concrete frame, a plate-like base connected to the leg portion, a first connecting plate, and a connection bolt connecting the plate-like base, and the insertion hole of the concrete frame is filled with a filler. The leg of the connecting member is inserted into the insertion hole of the concrete frame, the connecting member is integrated with the filler hardened in the insertion hole, and the connecting member and the filler hardened in the insertion hole are connected to the existing steel beam and the new steel frame. The steel structure that forms shear resistance and transmission means that resists the shear stress that occurs at the joint with the 1 stud is applied to the existing structure by an external force such as an earthquake. When shear stress is generated at the joint between the existing steel beam and the new steel first stud, the shear resistance / transmission means formed from the connecting member and the filler hardened in the insertion hole resists the shear stress. On the other hand, it is possible to smoothly transmit the shear stress between the concrete frame and the new steel frame first stud.

  The steel structure in which shear resistance / transmission means is formed in the vicinity of the center of the new steel first stud and bending resistance / transmission means in the vicinity of both sides of the new steel first stud is When an external force such as an earthquake acts and a shear stress or bending stress is generated at the joint between the existing steel beam and the new steel first inter-column, shear resistance formed near the center of the new steel first inter-column The bending resistance and transmission means formed near both sides of the transmission means and the new steel frame first interstice sufficiently resist shear stress and bending stress, and between the existing steel beam and concrete frame and the new steel frame first interphase column. Can smoothly transmit shearing stress and bending stress.

  One of the first H-section steels in which the shear resistance / transmission means is formed along the first H-shaped steel web forming the new steel first stud and the bending resistance / transmission means forms the first steel first stud. The steel structure formed in the vicinity of the other flange and in the vicinity of the other flange is subject to external forces such as earthquakes acting on the existing structure, causing shear stress and stress at the joint between the existing steel beam and the new steel frame first stud. When bending stress occurs, shear resistance / transmission means formed along the first H-section steel web forming the new steel frame first stud and first H-section steel forming the new steel frame first stud Between the existing steel beam and concrete frame and the new steel frame first stud, while the bending resistance / transmission means formed in the vicinity of one flange and the other flange sufficiently resists shear stress and bending stress. Smooth transmission of shear stress and bending stress in It is possible.

The front view of the steel structure shown as an example. The top view of the newly installed steel frame 1st pillar shown as an example. The perspective view of the steel material sleeve shown as an example. The perspective view of the 1st expansion member shown as an example. The perspective view of the 2nd expansion member shown as an example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The perspective view of the connection member shown as an example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view which shows an example of the connection process for constructing the steel structure of FIG. The front view of the steel structure shown as another example. The front view of the steel structure shown as another example. The front view of the steel structure shown as another example. The front view of the steel structure shown as another example. The upper side figure of the new steel frame pillar shown as another example. The upper side figure of the new steel frame pillar shown as another example. The perspective view of the steel material sleeve shown as another example.

  The details of the steel structure according to the present invention will be described below with reference to the accompanying drawings such as FIG. 1 which is a front view of the steel structure 10A shown as an example. 2 is a top view of the new steel frame first stud 12 shown as an example, and FIG. 3 is a perspective view of a steel sleeve 14 shown as an example. FIG. 4 is a perspective view of the first extension member 16 shown as an example, and FIG. 5 is a perspective view of the second extension member 21 shown as an example. In FIG. 1, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel structure 10A (including the steel structures 10B to 10N) is constructed in any existing building such as a high-rise building, a high-rise building, a middle-rise building, a low-rise building, or a factory.

  The steel structure 10A includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 15, and a plurality of first connection bolts 15. The first extension member 16, a plurality of insertion bolts 17 and a filler 18, a new steel frame second stud 19 and a second connection plate 20, a plurality of second extension members 21 and a plurality of second connection bolts 22. And is formed from.

  In FIG. 1, one new steel frame first stud 12 and one new steel frame second stud 19 are shown, but actually, a plurality of new steel frame first studs 12 and a plurality of new steel frames A steel frame second stud 19 is attached to the existing steel beam 11 (FIGS. 8, 10, 13, 15, 17, 19, 22, 24, 26, 28, 29, 30, The same applies to FIG. 31). There are no particular restrictions on the number of steel sleeves 14, the number of first and second connecting bolts 15, 22, the number of insertion bolts 17, and the number of first and second additional members 16, 21. The size of the steel structure 10 </ b> A The number is determined according to the required strength.

  For the existing steel beam 11, an H-section steel 23 (second H-section) made of steel and extending in the horizontal direction is used. The H-shaped steel 23, which is the existing steel beam 11, is located between the flanges 24, 25 and an upper flange 24 that extends in the horizontal direction, a lower flange 25 that extends in the horizontal direction parallel to the upper flange 24, and the horizontal direction. And a web 26 extending to the bottom. Bolt holes 27 are formed in the upper flange 24, the lower flange 25, and the web 26.

  The existing steel beam 11 is connected to an existing main pillar (not shown) formed of H-shaped steel. The existing steel beam 11 may not be an H-shaped steel, but may be an I-shaped steel, a T-shaped steel, an angle steel, a grooved steel, a Z-shaped steel, etc. It may be a shape steel, a T-shape steel, an angle steel, a groove-shape steel, a Z-shape steel, a mouthpiece steel, a day-shape steel, an O-shape steel or the like. An existing concrete slab 28 (concrete frame) having a predetermined thickness is constructed on the existing steel beam 11 (upper flange 24). A predetermined portion of the concrete slab 28 is provided with a through-hole 29 having a circular cross section and an insertion hole 30 having a circular cross-section aligned in the horizontal direction.

  The new steel frame first stud 12 is attached to the existing steel beam 11 and extends vertically upward from the existing steel beam 11. The new steel frame first stud 12 uses an H-section steel 31 (first H-section steel) made of steel and extending in the vertical direction. The H-shaped steel 31 which is the new steel frame first stud 12 is between one flange 32 extending in the vertical direction, the other flange 33 extending in the vertical direction parallel to the one flange 32, and the flanges 32, 33. And a web 34 that is positioned and extends vertically. In addition, the new steel frame first stud 12 may not be an H-shaped steel, but may be an I-shaped steel, a T-shaped steel, an angle steel, a grooved steel, a Z-shaped steel, a mouth-shaped steel, a Japanese steel, an O-shaped steel, or the like. .

  The 1st connection board 13 is made from steel materials, is shape | molded in plate shape, and has a predetermined area and predetermined thickness. The first connecting plate 13 is attached (welded) to the lower end of the new steel frame first stud 12 (the lower ends of the flanges 32 and 33 and the web 34) by welding. The first connecting plate 13 extends in the horizontal direction at the lower end of the new steel frame first stud 12. The 1st connection board 13 is previously attached to the lower end of the new steel frame 1st stud 12 in a factory, and is conveyed to the spot.

  The first connecting plate 13 includes a central portion 35 extending between one flange 32 of the H-shaped steel 31 and the other flange 33 of the H-shaped steel 31 that is the first steel frame first pillar 12, and the flanges 32 and 33 of the H-shaped steel 31. And both side portions 36 and 37 extending laterally in the horizontal direction. Bolt holes 27 are drilled in the central portion 35 and both side portions 36 and 37 of the first connecting plate 13. The first connecting plate 13 is disposed (placed) on a concrete slab 28 (concrete frame). A filler 38 is filled between the first connecting plate 13 and the concrete slab 28. The filler 38 is hardened between the first connecting plate 13 and the concrete slab 28. The fillers 18 and 38 (including the filler 61 described later) include all usable fillers such as inorganic fillers such as non-shrink mortar and high-strength concrete, and organic fillers such as epoxy resins. Can be used.

  These steel material sleeves 14 (tube materials) are made of a steel material, and the cross-sectional shape thereof is formed into a circular cylindrical shape. The steel sleeve 14 is inserted into a through hole 29 drilled in the concrete slab 28 and extends in the vertical direction. The upper end of the steel sleeve 14 is preferably in contact with the lower surface of the first connecting plate 13. These first connecting bolts 15 are made of steel. The first connecting bolt 15 is inserted into the steel sleeve 14 (through hole 29) and extends in the vertical direction from the first connecting plate 13 toward the upper flange 24 of the H-shaped steel 23 forming the existing steel beam 11.

  The first connecting bolt 15 is inserted or screwed into a bolt hole 27 drilled in both side portions 36 and 37 of the first connecting plate 13, and is a central portion 35 of the first connecting plate 13 and near one flange 32. And is inserted or screwed into the bolt hole 27 which is drilled near the other flange 33 in the central portion 35 of the first connecting plate 13. . The first connection bolt 15 is firmly connected to the first connection plate 13 by a nut 40 (fixing means) being screwed onto a screw portion 39 exposed vertically upward from the first connection plate 13.

  These first extension members 16 are made of steel and are arranged on the upper flange 24 side (directly below the upper flange 24) of the H-section steel 23 that forms the existing steel beam 11. The first extension member 16 extends in the horizontal direction in parallel to the mounting plate 41 having a predetermined area and thickness extending in the vertical direction parallel to the web 26 of the existing steel beam 11 and the upper flange 24 of the existing steel beam 11. The connecting plate portion 42 has a predetermined area and a predetermined thickness, and the reinforcing plate portion 43 has a predetermined area and a predetermined thickness that are located in the center of the mounting plate portion 41 and the connecting plate portion 42 and extend in the vertical direction. In the first extension member 16, the mounting plate portion 41, the connection plate portion 42, and the reinforcing plate portion 43 are integrally formed. Bolt holes 27 are formed in the mounting plate portion 41 and the connection plate portion 42.

  These first extension members 16 are fixed bolts 44 inserted or screwed into the bolt holes 27 drilled in the mounting plate portion 41 and the bolt holes 27 of the web 26 of the H-shaped steel 23 forming the existing steel beam 11. Is firmly fixed to the existing steel beam 11 (H-section steel 23). A nut (not shown) is screwed to the fixing bolt 44. The first connection bolt 15 is inserted into the bolt hole 27 of the connection plate portion 42 of the first extension member 16, inserted into the steel sleeve 14 (through hole 29), and into the bolt hole 27 of the first connection plate 13. Inserted or screwed. The first connecting bolt 15 is fixed to the first connecting plate 13 by a nut 40 to connect the first connecting plate 13 and the first additional member 16.

  In the steel structure 10A, the first connection plate 13 and the first additional member 16 (the existing steel beam 11) are connected by the first connection bolt 15 inserted through the steel sleeve 14 (through hole 29), so that the new structure is provided. The lower end of the H-section steel 31 (first H-section steel) that forms the first steel frame 12 is connected to the upper flange 24 of the H-section steel 23 (second H-section) that forms the existing steel beam 11, A new steel frame first stud 12 is attached to the existing steel beam 11.

  In the steel structure 10A, since the first connecting bolt 15 resists tensile stress and the steel sleeve 14 resists compressive stress, the first connecting bolt 15 and the steel sleeve 14 are connected to the existing steel beam 11 (H-section steel 23). And a bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) generated at the joint between the first steel pillar 12 (H-section steel 31) and the new steel frame. The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-shaped steel 31 forming the new steel frame first stud 12. The central portion of the new steel frame first inter-column 12 is formed in the vicinity of one flange 32 of the H-section steel 31 forming the new steel frame first inter-column 12 and the central portion of the new steel frame first inter-column 12. And it is formed in the vicinity of the other flange 33 of the H-section steel 31 that forms the new steel frame first stud 12.

  These insertion bolts 17 are made of steel. The insertion bolt 17 is inserted or screwed into a bolt hole 27 drilled in the central portion 35 of the first connecting plate 13 and extends vertically from the first connecting plate 13 toward the existing steel beam 11 (upper flange 24). ing. The insertion bolt 17 is attached to the first connecting plate 13 by a nut 40 screwed so as to sandwich the first connecting plate 13. An exposed portion 45 (including the head) exposed downward from the first connecting plate 13 of the insertion bolt 17 is inserted into an insertion hole 30 drilled in the concrete slab 28 (concrete frame). In FIG. 1, the insertion hole 30 penetrates the concrete slab 28. However, if the insertion hole 17 is deep enough to insert the insertion bolt 17 (an insertion rod 62, a metal column 63, and a connecting member 67 described later). Alternatively, the insertion hole 30 may be a hole groove with a circular cross section in which the concrete slab 28 is drilled halfway.

  The filler 18 is filled in the insertion hole 30. In the insertion hole 30, the filler 18 is cured, and the insertion bolt 17 and the cured filler 18 are integrated. In the steel structure 10 </ b> A, the insertion bolt 17 and the filler 18 hardened in the insertion hole 30 are generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column 12 (H-shaped steel 31). Shear resistance and transmission means against shear stress are formed. The shearing resistance / transmission means is formed along the web 34 of the H-section steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  The new steel frame second inter-column 19 is located below the new steel frame first inter-column 12, is attached to the existing steel beam 11, and extends vertically downward from the existing steel beam 11. For the new steel frame second stud 19, an H-section steel 46 (third H-section) made of steel and extending in the vertical direction is used. The new steel frame second stud 19 is located between one flange 47 extending in the vertical direction, the other flange 48 extending in the vertical direction in parallel to the one flange 47, and between the flanges 47, 48 in the vertical direction. An extending web 49 is formed. In addition, even if the newly installed second steel frame 19 is not an H-shaped steel 46, it is an I-shaped steel, a T-shaped steel, an angle steel, a grooved steel, a Z-shaped steel, a mouth-shaped steel, a Japanese steel, an O-shaped steel, etc. Good.

  The 2nd connection board 20 is made from steel materials, is shape | molded in plate shape, and has a predetermined area and predetermined thickness. The second connecting plate 20 is attached (welded) to the upper end (the upper ends of the flanges 47, 48 and the web 49) of the new steel frame second stud 19 by welding. The second connecting plate 20 extends in the horizontal direction at the upper end of the new steel frame second stud 19. The second connecting plate 20 is attached to the upper end of the new steel frame second stud 19 in advance at the factory, and is transported to the site. The second connecting plate 20 includes a central portion 50 extending between one flange 47 and the other flange 48 of the H-section steel 46 that is the new steel frame second stud 19, and the flanges 47 and 48 of the H-section steel 46. Both side portions 51 and 52 extending laterally in the horizontal direction are provided. Bolt holes 27 are drilled in the central portion 50 and both side portions 51 and 52 of the second connecting plate 20.

  These second extension members 21 are made of steel and are disposed on the lower flange 25 side (directly above the lower flange 25) of the H-section steel 23 that forms the existing steel beam 11. The second additional member 21 extends in the horizontal direction parallel to the lower flange 25 of the H-shaped steel 23 and the mounting plate 53 having a predetermined area and thickness extending in the vertical direction parallel to the web 26 of the H-shaped steel 23. The connecting plate portion 54 has a predetermined area and a predetermined thickness, and the reinforcing plate portion 55 has a predetermined area and a predetermined thickness that are positioned in the center of the mounting plate portion 53 and the connecting plate portion 54 and extend in the vertical direction. In the second extension member 21, the mounting plate portion 53, the connection plate portion 54, and the reinforcing plate portion 55 are integrally formed. Bolt holes 27 are formed in the mounting plate portion 53 and the connection plate portion 54. The second extension member 21 is fixed by a fixing bolt 44 inserted or screwed into a bolt hole 27 drilled in the mounting plate 53 and a bolt hole 27 of the web 26 of the H-shaped steel 23 forming the existing steel beam 11. It is firmly fixed to the existing steel beam. A nut (not shown) is screwed to the fixing bolt 44.

  These second connecting bolts 22 are made of steel. The second connecting bolt 22 extends in the vertical direction from the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 toward the second connecting plate 20. The second connection bolt 22 is inserted into the bolt hole 27 of the connection plate portion 54 of the second extension member 21 and is inserted into the bolt hole 27 drilled in the central portion 50 and both side portions 51, 52 of the second connection plate 20. It is screwed. The second connecting bolt 22 is firmly connected to the second connecting plate 20 by a nut 40 (fixing means) being screwed onto a screw portion 56 exposed vertically downward from the second connecting plate 20. The second connecting bolt 22 connects the second additional member 21 and the second connecting plate 20, and connects the new steel frame second stud 19 to the lower flange 25 of the H-shaped steel 23 that forms the existing steel beam 11.

  FIG. 6 is a front view showing an example of a connecting step for constructing the steel structure 10A of FIG. In the connecting step, the first connecting plate 13 and the first additional member 16 (existing steel beam 11) are connected by the first connecting bolts 15 to form the H-shaped steel 31 (the first steel frame 31 which forms the new steel frame first stud 12). The lower end of the H-shaped steel is connected to the upper flange 24 of the H-shaped steel 23 (second H-shaped steel) forming the existing steel beam 11, and a bending resistance / transmission means is formed (constructed). Further, the second extension bolt 21 (the existing steel beam 11) and the second connection plate 20 (the new steel frame second pillar 19) are connected by the second connection bolts 22, and the H-shaped steel forming the existing steel beam 11 is connected. 23 (second H-shaped steel) lower flange 25 and second connecting plate 20 are connected, and the upper end of H-shaped steel 46 (third H-shaped steel) forming new steel frame second stud 19 is connected to the existing steel frame. Connect to the lower flange 25 of the beam 11.

  In the connecting step, the installation location of the new steel frame first stud 12 with respect to the existing steel beam 11 is selected, and as shown in FIG. 6A, the electric drill driver is placed at a predetermined position of the concrete slab 28 constructed at the installation location. A through hole 29 is drilled by a drill bit 57 (not shown), a bolt hole 27 is drilled in the upper flange 24 of the existing steel beam 11, and a bolt hole 27 is drilled in the lower flange 25 of the existing steel beam 11. Next, as shown in FIG. 6B, the periphery of the through hole 29 of the concrete slab 28 drilled by the drill bit 57 is cored by using a core drill 58, and the concrete slab 28 has a circular cross section. Hole 29 is drilled. In addition, the drilling procedure of the through hole 29 is not limited to that shown in the figure, and the through hole 29 can be drilled by all known drilling procedures (the drilling procedure of the through hole 29 described later is also the same).

  After the through hole 29 is drilled in the concrete slab 28 by the core drill 58, the steel sleeve 14 is inserted into the through hole 29 and the steel sleeve 14 is installed in the through hole 29 as shown in FIG. . The steel sleeve 14 is installed such that its lower end contacts the upper flange 24 of the existing steel beam 11 and its upper end contacts the lower surface of the first connecting plate 13. If there is a gap between the upper end of the steel sleeve 14 and the lower surface of the first connecting plate 13, insert a filler plate into the gap, or make the steel sleeve 14 longer and install it in the through hole 29, Delete the important part. Alternatively, a length adjusting mechanism is formed on the steel sleeve 14, and the length is adjusted using the adjusting mechanism in the field.

  After inserting and installing the steel sleeve 14 in the through hole 29, the first connecting plate 13 is disposed on the concrete slab 28 at the installation location of the new steel frame first stud 12. Next, as shown in FIG. 6D, with the head of the first connecting bolt 15 facing down, the first extension is made in the bolt hole 27 drilled in the connection plate portion 42 of the first extension member 16. The first connection bolt 15 is inserted into the bolt hole 27 of the upper flange 24 of the existing steel beam 11 and the steel sleeve 14 (through hole 29) is inserted while the first connection bolt 15 is inserted upward from below the member 16. Insert. In some cases, the first connecting bolt 15 may be inserted downward from above. The first extension member 16 is fixed by a fixing bolt 44 inserted or screwed into a bolt hole 27 drilled in the mounting plate 41 and a bolt hole 27 of the web 26 of the H-shaped steel 23 forming the existing steel beam 11. It is fixed to the existing steel beam 11.

  After the first connecting bolt 15 is inserted through the steel sleeve 14 (through hole 29), the screw 39 of the first connecting bolt 15 is perforated in the first connecting plate 13 as shown in FIG. 6 (e). A nut 40 (fixing means) is screwed into the screw portion 39 of the first connecting bolt 15 that is inserted or screwed into the hole 27 and exposed upward of the first connecting plate 13. The nut 40 is screwed onto the screw portion 39 of the first connecting bolt 15 exposed above the first connecting plate 13, thereby connecting the first connecting plate 13 and the first additional member 16 to the existing steel beam 11. The new steel frame first stud 12 is connected.

  A space between the first connecting plate 13 and the surface of the concrete slab 28 is filled with a filler 38. The filler 38 hardens in the space when the curing period has elapsed. In addition, the parallel state of the 1st connection board 13 (new steel frame 1st pillar 12) with respect to the upper flange 24 (surface of the concrete slab 28) of the existing steel beam 11 is adjusted with the filler 38. FIG.

  After connecting the first connecting plate 13 and the first additional member 16, or simultaneously with connecting the first connecting plate 13 and the first additional member 16, or the first connecting plate 13 and the first additional member 16 6 (d), with the head of the second connecting bolt 22 facing up, the bolt hole 27 drilled in the connecting plate portion 54 of the second additional member 21 The second connecting bolt 22 is inserted downward from above the second extension member 21, and the second connecting bolt 22 is inserted into the bolt hole 27 of the lower flange 25 of the existing steel beam 11. The second connecting bolt 22 may be inserted from below to above. The screw portion 56 of the second connecting bolt 22 is inserted into or screwed into the bolt hole 27 drilled in the second connecting plate 20 and exposed below the second connecting plate 20 as shown in FIG. The nut 40 (fixing means) is screwed onto the screw portion 56 of the second connecting bolt 22.

  By screwing the nut 40 to the screw portion 56 of the second connecting bolt 22 exposed below the second connecting plate 20, the second additional member 21 and the second connecting plate 20 are connected, and the existing steel beam 11 The lower flange 25 and the second connecting plate 20 are connected, and the new steel frame second stud 19 is connected to the existing steel beam 11. The second extension member 21 has a fixing bolt inserted or screwed into the bolt hole 27 formed in the mounting plate 53 and the bolt hole 27 of the web 26 of the H-shaped steel 23 forming the existing steel beam 11. 44 is fixed to the existing steel beam 11.

  In the steel structure 10 </ b> A, bending resistance / transmission resists bending stress (tensile stress and compressive stress) generated from the first connecting bolt 15 and the steel sleeve 14 at the joint between the existing steel beam 11 and the new steel first stud 12. Means are formed. The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-section steel 31 forming the new steel frame first stud 12. The central part of the new steel frame first inter-column 12 is formed in the vicinity of one flange 32 of the H-section steel 31 forming the new steel frame first inter-column 12 and the central part of the new steel frame first inter-column 12. Thus, it is formed in the vicinity of the other flange 33 of the H-section steel 31 forming the new steel frame first stud 12.

  FIG. 7 is a front view showing an example of a connection process for constructing the steel structure 10A of FIG. In the connection step, the first connecting plate 13 (new steel frame first inter-column 12) and the concrete slab 28 (concrete frame) are connected by the insertion bolts 17 to form (construct) shear resistance / transmission means. In the connecting step, as shown in FIG. 7 (a), the core slab 28 is inserted into a predetermined position of the concrete slab 28 constructed at the installation location of the new steel first stud 12 with respect to the existing steel beam 11. Hole 30 is drilled.

  Next, as shown in FIG. 7B, with the head of the insertion bolt 17 facing down, the bolt hole 27 drilled in the first connecting plate 13 is inserted into the bolt hole 27 from below the first connecting plate 13. The screw portion 59 of the insertion bolt 17 is inserted or screwed in, and the nut 40 is screwed onto the screw portion 59 of the insertion bolt 17 so as to sandwich the first connection plate 13 so that the insertion bolt 17 is attached to the first connection plate 13. Install. The insertion bolt 17 may not have a head. A filler filling port 60 for filling the filler 18 is formed in the vicinity of the bolt hole 27 of the first connecting plate 13.

  After the insertion bolt 17 is attached to the first connection plate 13, as shown in FIG. 7C, the first connection plate 13 is moved downward toward the insertion hole 30, and the first connection plate 13 is moved downward. The exposed portion 45 of the exposed insertion bolt 17 is inserted into the insertion hole 30 of the concrete slab 28, and the first connecting plate 13 is installed on the concrete slab 28. Next, the filler 18 is filled (injected) into the insertion hole 30 from the filler filling port 60 of the first connecting plate 13. The filler 18 filled in the insertion hole 30 is cured in the insertion hole 30 when the curing period has elapsed.

  In the insertion hole 30, as shown in FIG. 7D, the insertion bolt 17 is integrated with the filler 18 cured in the insertion hole 30. In the steel structure 10 </ b> A, shear resistance / transmission means that resists the shear stress generated at the joint between the existing steel beam 11 and the new steel first intermediate column 12 is formed from the insertion bolt 17 and the filler 18 hardened in the insertion hole 30. Is done. The shear resistance / transmission means is formed along the web 34 of the H-shaped steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  As another example of the connecting step, after inserting the insertion hole 30 at a predetermined position of the concrete slab 28, the insertion hole 30 is filled with the filler 18. Next, the insertion bolt 17 (exposed portion 45) is inserted into the insertion hole 30 (filler 18) of the concrete slab 28, and the insertion bolt 17 is inserted into the bolt hole 27 of the first connection plate 13. Is installed on the concrete slab 28, and the nut 40 is screwed onto the screw portion 59 of the insertion bolt 17 to attach the insertion bolt 17 to the first connecting plate 13. Alternatively, the first connecting plate 13 to which the insertion bolt 17 is attached is moved downward toward the insertion hole 30, and the exposed portion 45 of the insertion bolt 17 exposed downward from the first connecting plate 13 is inserted into the insertion hole 30 of the concrete slab 28. The first connecting plate 13 is placed on the concrete slab 28 by inserting into the filler 18. In this case, the filler filling port 60 is not made in the first connecting plate 13.

  The steel structure 10A drills a through hole 29 in a concrete slab 28 (concrete frame) constructed on an upper flange 24 of an H-section steel 23 (second H-section steel) that forms an existing steel beam 11. The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting bolt 15 is placed (placed) on the concrete slab 28 (concrete frame) constructed on the upper flange 24 and inserted into the steel sleeve 14 installed in the through hole 29 of the concrete slab 28. By connecting the first connecting plate 13 and the first additional member 16 (existing steel beam 11) and connecting the second additional member 21 (existing steel beam 11) and the second connecting plate 20 by the second connecting bolt 22 New steel frame 1 Since the column 12 is connected to the existing steel beam 11 and the new steel frame second intermediate column 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 15 is inserted is drilled in the concrete slab 28, and the through hole 29, the steel sleeve 14 is installed, the first connecting bolt 15 connects the upper flange 24 of the existing steel beam 11 and the first connecting plate 13, and the second connecting bolt 22 connects the lower flange 25 of the existing steel beam 11 What is necessary is just to connect with the 2nd connection board 20, it is not necessary to carry out a hanger construction, the occurrence of a hail sound, hail vibration and the generation of a large amount of dust can be prevented, while maintaining a quiet and clean environment, The new steel frame first stud 12 can be attached to the existing steel beam 11 of the existing building, and the new steel frame second stud 19 can be attached to the existing steel beam 11.

  Since the steel structure 10A can prevent the generation of the hail and vibration and the generation of a large amount of dust, the work can be performed during the daytime on weekdays, and the daytime time on weekdays can be used effectively. The new steel frame first stud 12 (H steel bar 31) can be attached to the existing steel beam 11 (H-shaped steel 23) of the existing building efficiently in time, and the new steel second stud 19 (H A section steel 46) can be attached. Since the steel structure 10A does not need to hang concrete, it is possible to save time and labor for carrying out restoration work on the hanger, and to reduce the proof stress of the concrete slab 28 (concrete frame) or the concrete slab 28. While preventing deformation, the new steel first inter-column 12 (H-shaped steel 31) can be efficiently attached in a short time to the existing steel beam 11 (H-shaped steel 23) of the existing building, and the new steel frame is attached to the existing steel beam 11 The second stud 19 (H-section steel 46) can be efficiently attached in a short time.

  The steel structure 10 </ b> A uses the first connection bolt 15 inserted through the steel material sleeve 14 (through hole 29) to connect the new steel frame first stud 12 to the existing steel beam 11 and uses the second connection bolt 22. Because the new steel frame second stud 19 is connected to the existing steel beam 11, welding work is not required, and it is possible to prevent the deterioration of the strength of the steel member and the deformation of the steel member due to the heat of welding. There is no danger, and the new steel frame first stud 12 (H-section steel 31) is safely installed on the existing steel beam 11 (H-section steel 23) of all existing buildings such as high-rise buildings, high-rise buildings, middle-rise buildings, low-rise buildings, and factories. The new steel frame second stud 19 (H-shaped steel 46) can be safely attached to the existing steel beam 11.

  In the steel structure 10A, the insertion bolt 17 inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 are provided with the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud 12 (H-shaped steel 31). ) To form the shear resistance and transmission means that resists the shear stress generated at the joint portion, so that an external force such as an earthquake acts on the existing building and joins the existing steel beam 11 and the new steel first pillar 12 When a shear stress is generated in the portion, the shear resistance / transmission means formed from the insertion bolt 17 inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 resists the shear stress, and the concrete. Smooth transmission of shear stress can be performed between the slab 28 (concrete frame) and the new steel frame first inter-column 12.

  In the steel structure 10A, the first connecting bolt 15 inserted into the through hole 29 and the steel sleeve 14 installed in the through hole 29 are the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud 12 (H Since bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) generated at the joint with the structural steel 31) is formed, an external force such as an earthquake acts on the existing building, and the existing steel beam 11 Bending stress formed from the first connecting bolt 15 inserted into the through hole 29 and the steel sleeve 14 installed in the through hole 29 when a bending stress is generated at the joint between the first steel pillar 12 and the new steel frame 12 The transmission means can smoothly transmit the bending stress between the existing steel beam 11 or the concrete slab 28 (concrete frame) and the new steel first inter-column 12 while resisting the bending stress.

  In the steel structure 10 </ b> A, shear resistance / transmission means is formed along the web 34 of the H-shaped steel 31 of the new steel first intermediate column 12, and in the vicinity of one flange 32 of the H-shaped steel 31 of the new steel first intermediate column 12. Since the bending resistance / transmission means is formed in the vicinity of the flange 33 and the other flange 33, an external force such as an earthquake acts on the existing building and shears at the joint between the existing steel beam 11 and the new steel first intermediate post 12. When stress or bending stress is generated, the shear resistance / transmission means formed along the web 34 of the first H-section steel 31 forming the new steel frame first stud 12 and the new steel frame first stud 12 are formed. While the bending resistance / transmission means formed in the vicinity of one flange 32 and the vicinity of the other flange 33 of the first H-section steel 31 sufficiently resists shear stress and bending stress, the existing steel beam 11 (H Shaped steel 23) and concrete slurry 28 can be performed smoothly transfer the shear stress and bending stress between the (concrete skeleton) and the new steel first stud 12 (H-section steel 31).

  FIG. 8 is a front view of a steel structure 10B shown as another example. In FIG. 8, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel structure 10B includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 15 and a plurality of first connection bolts 15. First extension member 16, a plurality of insertion bolts 17 and fillers 18, 61, a new steel frame second stud 19 and a second connection plate 20, a plurality of second extension members 21 and a plurality of second connections. The bolt 22 is formed. There are no particular restrictions on the number of steel sleeves 14, the number of first and second connecting bolts 15, 22, the number of insertion bolts 17, and the number of first and second extension members 16, 21. The size of the steel structure 10 </ b> B The number of them is determined according to the required strength.

  The existing steel beam 11 and the new steel frame first stud 12 that form the steel structure 10B have the same H-section steels 23 and 31 (first H-section steel and second H-section steel) as those in FIG. It is used. An existing concrete slab 28 (concrete frame) is constructed on the existing steel beam 11 (upper flange 24), and a predetermined cross section of the concrete slab 28 has a circular through-hole 29 arranged in a horizontal direction and a circular cross section. An insertion hole 30 is drilled.

  The first connecting plate 13 forming the steel structure 10B is the same as that of FIG. A filler filling port 60 for filling the filler 61 is formed in the vicinity of the bolt hole 27 of the first connecting plate 13. A filler 38 is filled between the first connecting plate 13 and the concrete slab 28. These steel sleeves 14 forming the steel structure 10B are the same as those in FIG. 1, and are inserted and installed in through holes 29 drilled in the concrete slab 28.

  The first connection bolts 15 forming the steel structure 10B are the same as those in FIG. 1 and are inserted into the steel sleeve 14 (through hole 29) to form the existing steel beam 11 from the first connection plate 13. The steel 23 extends in the vertical direction toward the upper flange 24. The first connecting bolt 15 is connected to the first connecting plate 13 by screwing a nut 40 (fixing means) to a screw portion 39 exposed vertically upward from the first connecting plate 13. The first additional members 16 forming the steel structure 10B are the same as those in FIG. 1 and are arranged on the upper flange 24 side (just below the upper flange 24) of the existing steel beam 11. The first extension member 16 is fixed to the web 26 of the existing steel beam 11 by fixing bolts 44 and nuts.

  The first connection bolt 15 is inserted into the bolt hole 27 of the connection plate portion 42 of the first extension member 16, inserted into the steel sleeve 14 (through hole 29), and into the bolt hole 27 of the first connection plate 13. The first connecting plate 13 and the first additional member 16 are connected by being inserted or screwed and fixed to the first connecting plate 13 by the nut 40 screwed to the screw portion 39. The filler 61 forming the steel structure 10 </ b> B is filled in the through hole 29 drilled in the concrete slab 28 and hardened in the through hole 29.

  In the steel structure 10B, the gap between the through hole 29 and the outer peripheral surface of the steel sleeve 14 is filled with the filler 61, and the gap between the first connection bolt 15 and the inner peripheral surface of the steel sleeve 14 is filled with the filler 61. Is buried by. In the through hole 29, the filler 61 is hardened, and the first connecting bolt 15, the steel sleeve 14, and the hardened filler 61 are integrated.

  In the steel structure 10B, the first connection plate 13 and the first additional member 16 (existing steel beam 11) are connected by the first connection bolt 15 inserted through the steel sleeve 14 (through hole 29). The lower end of the H-section steel 31 (first H-section steel) that forms the first steel frame 12 is connected to the upper flange 24 of the H-section steel 23 (second H-section) that forms the existing steel beam 11, A new steel frame first stud 12 is attached to the existing steel beam 11.

  In the steel structure 10B, the first connecting bolt 15 resists tensile stress, and the steel sleeve 14 and the filler 61 resist compressive stress. Therefore, the first connecting bolt 15, the steel sleeve 14 and the filler 61 are already provided. Bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) generated at the joint between the steel beam 11 (H-shaped steel 23) and the newly-installed first steel frame 12 (H-shaped steel 31) is formed. . The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-shaped steel 31 forming the new steel frame first stud 12. The central portion of the new steel frame first inter-column 12 is formed in the vicinity of one flange 32 of the H-section steel 31 forming the new steel frame first inter-column 12 and the central portion of the new steel frame first inter-column 12. And it is formed in the vicinity of the other flange 33 of the H-section steel 31 that forms the new steel frame first stud 12.

  The insertion bolts 17 forming the steel structure 10B are the same as those in FIG. 1 and are inserted or screwed into the bolt holes 27 drilled in the central portion 35 of the first connection plate 13. It extends in the vertical direction toward the existing steel beam 11 (upper flange 24). The insertion bolt 17 is attached to the first connecting plate 13 by a nut 40 screwed so as to sandwich the first connecting plate 13. An exposed portion 45 (including the head) exposed downward from the first connecting plate 13 of the insertion bolt 17 is inserted into an insertion hole 30 drilled in the concrete slab 28 (concrete frame).

  The filler 18 is filled in the insertion hole 30. In the insertion hole 30, the filler 18 is cured, and the insertion bolt 17 and the cured filler 18 are integrated. In the steel structure 10 </ b> B, the insertion bolt 17 and the filler 18 hardened in the insertion hole 30 are generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column 12 (H-shaped steel 31). Shear resistance and transmission means against shear stress are formed. The shearing resistance / transmission means is formed along the web 34 of the H-section steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  An H-section steel 46 (third H-section steel) that is the same as that in FIG. 1 is used for the new steel frame second stud 19 that forms the steel structure 10B. The new steel frame second inter-column 19 is located below the new steel frame first inter-column 12, is attached to the existing steel beam 11, and extends vertically downward from the existing steel beam 11. The second connecting plate 20 forming the steel structure 10B is the same as that shown in FIG. Bolt holes 27 are drilled in the central portion 50 and both side portions 51 and 52 of the second connecting plate 20.

  The second additional member 21 that forms the steel structure 10B is the same as that of FIG. 1 and is disposed on the lower flange 25 side (directly above the lower flange 25) of the H-shaped steel 23 that forms the existing steel beam 11. Yes. The second extension member 21 is fixed to the existing steel beam 11 by a fixing bolt 44 inserted or screwed into the bolt hole 27 drilled in the mounting plate 53 and the bolt hole 27 of the web 26 of the existing steel beam 11. ing. A nut (not shown) is screwed to the fixing bolt 44.

  The second connection bolt 22 forming the steel structure 10B is the same as that of FIG. 1 and extends in the vertical direction from the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 toward the second connection plate 20. ing. The second connection bolt 22 is inserted into the bolt hole 27 of the connection plate portion 54 of the second extension member 21 and is inserted into the bolt hole 27 drilled in the central portion 50 and both side portions 51, 52 of the second connection plate 20. It is screwed. The second connecting bolt 22 connects the second extension member 21 and the second connecting plate 20, and the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 and the second connecting plate 20 (the new steel frame second). The spacer 19) is connected.

  FIG. 9 is a front view showing an example of a connecting step for constructing the steel structure 10B of FIG. In addition, the connection process for constructing the steel structure 10B in FIG. 8 is the same as the connection process for constructing the steel structure 10A in FIG. 1 (see FIG. 7). In the connecting step, the installation location of the new steel frame first stud 12 with respect to the existing steel beam 11 is selected, and as shown in FIG. 9A, the electric drill driver is placed at a predetermined position of the concrete slab 28 constructed at the installation location. A through hole 29 is drilled by a drill bit 57 (not shown), a bolt hole 27 is drilled in the upper flange 24 of the existing steel beam 11, and a bolt hole 27 is drilled in the lower flange 25 of the existing steel beam 11. Next, as shown in FIG. 9 (b), the periphery of the through hole 29 of the concrete slab 28 drilled by the drill bit 57 is cored by using a core drill 58 to penetrate the concrete slab 28 with a circular cross section. Hole 29 is drilled.

  After the through hole 29 is drilled in the concrete slab 28 by the core drill 58, the steel sleeve 14 is inserted into the through hole 29 and the steel sleeve 14 is installed in the through hole 29 as shown in FIG. . The steel sleeve 14 is installed such that its lower end contacts the upper flange 24 of the existing steel beam 11 and its upper end contacts the lower surface of the first connecting plate 13. When a gap is generated between the upper end of the steel sleeve 14 and the lower surface of the first connecting plate 13, the gap is filled by the method described above. After the steel sleeve 14 is inserted and installed in the through hole 29, as shown in FIG. Fill the gap with the surface.

  Next, the first connecting plate 13 is placed (placed) on the concrete slab 28 where the new steel frame first stud 12 is installed, and the head of the first connecting bolt 15 is placed as shown in FIG. The first connecting bolt 15 is inserted into the bolt hole 27 drilled in the connection plate portion 42 of the first additional member 16 from the lower side to the upper side of the first additional member 16 in the state where the first part member 16 is down. The connecting bolt 15 is inserted through the bolt hole 27 of the upper flange 24 of the existing steel beam 11 and also through the steel sleeve 14 (through hole 29). Note that the gap between the first connecting bolt 15 and the inner peripheral surface of the steel sleeve 14 is filled with the filler 61. The first extension member 16 is installed by a fixing bolt 44 inserted or screwed into a bolt hole 27 drilled in the mounting plate 41 and a bolt hole 27 of the web 26 of the H-shaped steel 23 which is the existing steel beam 11. It is fixed to the steel beam 11.

  After the first connecting bolt 15 is inserted into the steel sleeve 14 (through hole 29), the screw 39 of the first connecting bolt 15 is perforated in the first connecting plate 13 as shown in FIG. A nut 40 (fixing means) is screwed into the screw portion 39 of the first connecting bolt 15 that is inserted or screwed into the hole 27 and exposed above the first connecting plate 13. The nut 40 is screwed onto the screw portion 39 of the first connecting bolt 15 exposed above the first connecting plate 13, thereby connecting the first connecting plate 13 and the first additional member 16 to the existing steel beam 11. The new steel frame first stud 12 is connected.

  After connecting the first connecting plate 13 and the first additional member 16, or simultaneously with connecting the first connecting plate 13 and the first additional member 16, or the first connecting plate 13 and the first additional member 16 9 (e), with the head of the second connecting bolt 22 facing up, the bolt hole 27 drilled in the connecting plate portion 54 of the second additional member 21 The second connecting bolt 22 is inserted downward from above the second extension member 21, and the second connecting bolt 22 is inserted into the bolt hole 27 of the lower flange 25 of the existing steel beam 11. The second extension member 21 has a fixing bolt 44 inserted or screwed into the bolt hole 27 drilled in the mounting plate 53 and the bolt hole 27 of the web 26 of the H-shaped steel 23 which is the existing steel beam 11. It is being fixed to the existing steel beam 11 by.

  The screw portion 56 of the second connecting bolt 22 is inserted or screwed into the bolt hole 27 drilled in the second connecting plate 20 and exposed below the second connecting plate 20 as shown in FIG. The nut 40 (fixing means) is screwed onto the screw portion 56 of the second connecting bolt 22. By screwing the nut 40 to the screw portion 56 of the second connecting bolt 22 exposed below the second connecting plate 20, the second additional member 21 and the second connecting plate 20 are connected, and the existing steel beam 11 The lower flange 25 and the second connecting plate 20 are connected, and the new steel frame second stud 19 is connected to the existing steel beam 11.

  A space between the first connecting plate 13 and the surface of the concrete slab 28 is filled with a filler 38. The filler 38 hardens in the space when the curing period has elapsed. In addition, the parallel state of the 1st connection board 13 (new steel frame 1st pillar 12) with respect to the upper flange 24 (surface of the concrete slab 28) of the existing steel beam 11 is adjusted with the filler 38. FIG.

  The steel structure 10B resists bending stress (tensile stress and compressive stress) generated at the joint between the existing steel beam 11 and the new steel first inter-column 12 from the first connecting bolt 15, the steel sleeve 14, and the filler 61. Bending resistance and transmission means are formed. The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-section steel 31 forming the new steel frame first stud 12. In the central part of the new steel frame first intermediate column 12, it is formed in the vicinity of one flange 32 of the H-shaped steel 31 forming the new steel frame first intermediate column 12, and at the central part of the new steel frame first intermediate column 12. Thus, it is formed in the vicinity of the other flange 33 of the H-section steel 31 that forms the new steel frame first stud 12.

  The steel structure 10B drills a through hole 29 in a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the H-section steel 23 (second H-section steel) forming the existing steel beam 11; The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting bolt 15 is placed (placed) on the concrete slab 28 (concrete frame) constructed on the upper flange 24 and inserted into the steel sleeve 14 installed in the through hole 29 of the concrete slab 28. By connecting the first connecting plate 13 and the first additional member 16 (existing steel beam 11) and connecting the second additional member 21 (existing steel beam 11) and the second connecting plate 20 by the second connecting bolt 22 New steel frame 1 Since the column 12 is connected to the existing steel beam 11 and the new steel frame second intermediate column 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 15 is inserted is drilled in the concrete slab 28, and the through hole The steel sleeve 14 is installed at 29, the filler 61 is filled into the through hole 29, and the second connection is made while connecting the upper flange 24 of the existing steel beam 11 and the first connection plate 13 by the first connection bolt 15. It is only necessary to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20 with the bolts 22, so that it is not necessary to carry out the hanger work, and it is possible to prevent the occurrence of hail noises, hail vibrations and a large amount of dust. While maintaining a quiet and clean environment, the new steel frame first stud 12 can be attached to the existing steel beam 11 of the existing building, and the new steel frame second space can be attached to the existing steel beam 11. 19 can be attached to.

  Since the steel structure 10B can prevent the generation of the hail and vibration and the generation of a large amount of dust, the work can be performed during the daytime on weekdays, and the daytime time on weekdays can be used effectively. The new steel frame first stud 12 (H steel bar 31) can be attached to the existing steel beam 11 (H-shaped steel 23) of the existing building efficiently in time, and the new steel second stud 19 (H A section steel 46) can be attached. Since the steel structure 10B does not need to hang concrete, it is possible to save time and labor for carrying out restoration work on the hanger, while preventing a decrease in the strength of the concrete slab 28 and deformation of the concrete slab 28. The new steel frame first stud 12 (H-beam 31) can be efficiently attached in a short time to the existing steel beam 11 (H-shaped steel 23) of the existing building, and the new steel frame second stud 19 is attached to the existing steel beam 11. (H-section steel 46) can be efficiently attached in a short time.

  The steel structure 10 </ b> B uses the first connection bolt 15 inserted through the steel material sleeve 14 (through hole 29) to connect the new steel frame first stud 12 to the existing steel beam 11 and uses the second connection bolt 22. Because the new steel frame second stud 19 is connected to the existing steel beam 11, welding work is not required, and it is possible to prevent the deterioration of the strength of the steel member and the deformation of the steel member due to the heat of welding. There is no danger, and the new steel frame first stud 12 (H-section steel 31) is safely installed on the existing steel beam 11 (H-section steel 23) of all existing buildings such as high-rise buildings, high-rise buildings, middle-rise buildings, low-rise buildings, and factories. The new steel frame second stud 19 (H-section steel 46) can be safely attached to the existing steel beam 11.

  In the steel structure 10B, the insertion bolt 17 inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 include the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud 12 (H-shaped steel 31). ) To form the shear resistance and transmission means that resists the shear stress generated at the joint portion, so that an external force such as an earthquake acts on the existing building and joins the existing steel beam 11 and the new steel first pillar 12 When a shear stress is generated in the portion, the shear resistance / transmission means formed from the insertion bolt 17 inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 resists the shear stress, and the concrete. Smooth transmission of shear stress can be performed between the slab 28 (concrete frame) and the new steel frame first inter-column 12.

  In the steel structure 10B, the first connecting bolt 15 inserted in the through hole 29, the steel material sleeve 14 installed in the through hole 29, and the filler 61 hardened in the through hole 29 are provided with the existing steel beam 11 (H-shaped steel 23). ) And the new steel frame first stud 12 (H-section steel 31), bending resistance and transmission means that resist bending stress (tensile stress and compressive stress) generated at the joint are formed. When a bending stress is generated at the joint between the existing steel beam 11 and the new steel first stud 12, the first connecting bolt 15 inserted through the through hole 29 and the through hole 29 are installed. While the bending resistance / transmission means formed from the steel sleeve 14 and the filler 61 hardened in the through hole 29 resists the bending stress, the existing steel beam 11 and the concrete slab 28 (concrete frame) and the first steel frame 1 It is possible to perform a smooth transfer of bending stresses between the 12.

  In the steel structure 10 </ b> B, shear resistance / transmission means is formed along the web 34 of the H-shaped steel 31 of the new steel first intermediate column 12, and in the vicinity of one flange 32 of the H-shaped steel 31 of the new steel first intermediate column 12. Since the bending resistance / transmission means is formed in the vicinity of the flange 33 and the other flange 33, an external force such as an earthquake acts on the existing building and shears at the joint between the existing steel beam 11 and the new steel first intermediate post 12. When stress or bending stress is generated, the shear resistance / transmission means formed along the web 34 of the first H-section steel 31 forming the new steel frame first stud 12 and the new steel frame first stud 12 are formed. While the bending resistance / transmission means formed in the vicinity of one flange 32 and the vicinity of the other flange 33 of the first H-section steel 31 sufficiently resists shear stress and bending stress, the existing steel beam 11 (H Shaped steel 23) and concrete slurry 28 can be performed smoothly transfer the shear stress and bending stress between the (concrete skeleton) and the new steel first stud 12 (H-section steel 31).

  FIG. 10 is a front view of a steel structure 10C shown as another example. In FIG. 10, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel structure 10 </ b> C includes an existing steel beam 11 and a new steel frame first stud 12, a first connection plate 13, a plurality of first connection bolts 15, a plurality of first extension members 16, and a plurality of The insertion rod 62, the fillers 18, 61, the new steel frame second stud 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection bolts 22 are formed. There are no particular restrictions on the number of first and second connecting bolts 15 and 22, the number of insertion rods 62, and the number of first and second extension members 16 and 21, depending on the size and required strength of the steel structure 10 </ b> C. Determine the number of.

  The existing steel beam 11 and the new steel frame first stud 12 that form the steel structure 10C have the same H-section steels 23 and 31 (first H-section steel and second H-section steel) as those in FIG. It is used. An existing concrete slab 28 (concrete frame) is constructed on the existing steel beam 11 (upper flange 24), and a predetermined cross section of the concrete slab 28 has a circular through-hole 29 arranged in a horizontal direction and a circular cross section. An insertion hole 30 is drilled.

  The first connecting plate 13 forming the steel structure 10C is the same as that in FIG. 1, and is arranged (placed) on the concrete slab 28 (concrete frame). Filler filling ports 60 for filling the fillers 18 and 61 are formed in the vicinity of the bolt holes 27 of the first connecting plate 13 and the vicinity of the insertion rod 62 (see FIGS. 11 and 12). A filler 38 is filled between the first connecting plate 13 and the concrete slab 28. The first connecting bolts 15 forming the steel structure 10C are the same as those in FIG. It extends in the vertical direction toward 24. The first connecting bolt 15 is connected to the first connecting plate 13 by screwing a nut 40 (fixing means) to a screw portion 39 exposed vertically upward from the first connecting plate 13. The first additional members 16 forming the steel structure 10C are the same as those in FIG. 1 and are disposed on the upper flange 24 side of the existing steel beam 11 (just below the upper flange 24). The first extension member 16 is fixed to the web 26 of the existing steel beam 11 by fixing bolts 44 and nuts.

  The first connection bolt 15 is inserted into the bolt hole 27 of the connection plate portion 42 of the first extension member 16, inserted into the through hole 29, and inserted or screwed into the bolt hole 27 of the first connection plate 13. The first connecting plate 13 and the first additional member 16 are connected to each other by being fixed to the first connecting plate 13 by the nut 40 screwed to the screw portion 39. The filler 61 forming the steel structure 10 </ b> C is filled in the through hole 29 drilled in the concrete slab 28 and hardened in the through hole 29. In the through hole 29, the filler 61 is cured, and the first connecting bolt 15 and the cured filler 61 are integrated.

  In the steel structure 10 </ b> C, the first connection plate 13 and the first additional member 16 (the existing steel beam 11) are connected by the first connection bolt 15 inserted through the through hole 29, so that the new steel structure first stud 12 is provided. The lower end of the H-shaped steel 31 (first H-shaped steel) forming the steel frame is connected to the upper flange 24 of the H-shaped steel 23 (second H-shaped steel) forming the existing steel beam 11, and the new steel frame first stud 12 is attached to the existing steel beam 11.

  In the steel structure 10C, the first connecting bolt 15 resists tensile stress, and the filler 61 hardened in the through hole 29 resists compressive stress. Therefore, the filler 61 hardened in the first connecting bolt 15 and the through hole 29 is used. Forms bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel first inter-column 12 (H-shaped steel 31). doing. The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-shaped steel 31 forming the new steel frame first stud 12. The central portion of the new steel frame first inter-column 12 is formed in the vicinity of one flange 32 of the H-section steel 31 forming the new steel frame first inter-column 12 and the central portion of the new steel frame first inter-column 12. And it is formed in the vicinity of the other flange 33 of the H-section steel 31 that forms the new steel frame first stud 12.

  These insertion rods 62 are made of steel. The insertion rod 62 is fixed to the central portion 35 of the first connecting plate 13 by welding, and extends in the vertical direction from the first connecting plate 13 toward the existing steel beam 11 (upper flange 24). The insertion rod 62 (including the head) is inserted into the insertion hole 30 drilled in the concrete slab 28 (concrete frame). The insertion hole 30 is filled with the filler 18. In the insertion hole 30, the filler 18 is cured, and the insertion rod 62 and the cured filler 18 are integrated.

  In the steel structure 10C, the insertion rod 62 and the filler 18 hardened in the insertion hole 30 are generated at the joint portion between the existing steel beam 11 (H-shaped steel 23) and the new steel first intermediate column 12 (H-shaped steel 31). Shear resistance and transmission means against shear stress are formed. The shearing resistance / transmission means is formed along the web 34 of the H-section steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  The same H-section steel 46 (third H-section steel) as that shown in FIG. 1 is used for the new steel-frame second stud 19 that forms the steel structure 10C. The new steel frame second inter-column 19 is located below the new steel frame first inter-column 12, is attached to the existing steel beam 11, and extends vertically downward from the existing steel beam 11. The second connecting plate 20 forming the steel structure 10C is the same as that shown in FIG. 1, and is attached to the upper ends of the new steel frame second studs 19 (the upper ends of the flanges 47 and 48 and the web 49) by welding. Bolt holes 27 are drilled in the central portion 50 and both side portions 51 and 52 of the second connecting plate 20.

  The second extension member 21 forming the steel structure 10C is the same as that of FIG. Yes. The second extension member 21 is fixed to the existing steel beam 11 by a fixing bolt 44 inserted or screwed into the bolt hole 27 drilled in the mounting plate 53 and the bolt hole 27 of the web 26 of the existing steel beam 11. ing. A nut (not shown) is screwed to the fixing bolt 44.

  The second connection bolt 22 forming the steel structure 10C is the same as that in FIG. 1 and extends in the vertical direction from the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 toward the second connection plate 20. ing. The second connection bolt 22 is inserted into the bolt hole 27 of the connection plate portion 54 of the second extension member 21 and is inserted into the bolt hole 27 drilled in the central portion 50 and both side portions 51, 52 of the second connection plate 20. It is screwed. The second connecting bolt 22 connects the second extension member 21 and the second connecting plate 20, and the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 and the second connecting plate 20 (the new steel frame second). The spacer 19) is connected.

  FIG. 11 is a front view showing an example of a connecting step for constructing the steel structure 10C of FIG. In the connecting step, as shown in FIG. 11 (a), a through-hole 29 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 by a drill bit 57 of an electric drill driver. The bolt hole 27 is drilled in the upper flange 24 of the existing steel beam 11 and the bolt hole 27 is drilled in the lower flange 25 of the existing steel beam 11.

  After drilling the through hole 29 and the bolt hole 27 with the drill bit 57, as shown in FIG. 11 (b), the connection plate of the first additional member 16 with the head of the first connecting bolt 15 facing down. The first connection bolt 15 is inserted into the bolt hole 27 formed in the portion 42 from the lower side to the upper side of the first additional member 16, and the first connection bolt 15 is connected to the bolt hole 27 of the upper flange 24 of the existing steel beam 11. And through the through hole 29. In some cases, the first connecting bolt 15 may be inserted downward from above. The first extension member 16 is fixed by a fixing bolt 44 inserted or screwed into a bolt hole 27 drilled in the mounting plate 41 and a bolt hole 27 of the web 26 of the H-shaped steel 23 forming the existing steel beam 11. It is fixed to the existing steel beam 11.

  After the first connecting bolt 15 is inserted into the through hole 29, the screw portion 39 of the first connecting bolt 15 is inserted or screwed into the bolt hole 27 drilled in the first connecting plate 13, and the upper portion of the first connecting plate 13 is A nut 40 (fixing means) is screwed onto the screw portion 39 of the first connecting bolt 15 exposed to the front. Next, as shown in FIG. 11 (c), the filler 61 is filled (injected) into the through hole 29 from the filler filling port 60 of the first connecting plate 13, and the through hole 29 and the first hole are filled with the filler 61. The gap with the outer peripheral surface of the one connecting bolt 15 is filled. The filler 61 filled in the through hole 29 is cured in the through hole 29 after the curing period has elapsed. In the through hole 29, as shown in FIG. 11D, the first connecting bolt 15 is integrated with the filler 61 cured in the through hole 29.

  The nut 40 is screwed onto the screw portion 39 of the first connecting bolt 15 exposed above the first connecting plate 13, thereby connecting the first connecting plate 13 and the first additional member 16 to the existing steel beam 11. The new steel frame first stud 12 is connected. A space between the first connecting plate 13 and the surface of the concrete slab 28 is filled with a filler 38. In addition, the parallel state of the 1st connection board 13 (new steel frame 1st pillar 12) with respect to the upper flange 24 (surface of the concrete slab 28) of the existing steel beam 11 is adjusted with the filler 38. FIG. In the steel structure 10C, a bending resistance / transmission means that resists bending stress generated at the joint between the existing steel beam 11 and the new steel first inter-column 12 from the first connecting bolt 15 and the filler 61 hardened in the through hole 29. Is formed.

  As another example of the connecting step for constructing the steel structure 10C of FIG. 10, after the through hole 29 is drilled at a predetermined position of the concrete slab 28, the through hole 29 is filled with the filler 61, and the first The first connecting bolt 15 is inserted into the bolt hole 27 of the upper flange 24 of the existing steel beam 11 and the through hole while the first connecting bolt 15 is inserted into the bolt hole 27 drilled in the connecting plate portion 42 of the additional member 16. 29 (filler 61) is inserted. Next, the screw portion 39 of the first connecting bolt 15 is inserted or screwed into the bolt hole 27 drilled in the first connecting plate 13 and exposed to the upper side of the first connecting plate 13. A nut 40 (fixing means) is screwed onto 39. In this case, the filler filling port 60 is not made in the first connecting plate 13.

  After connecting the first connecting plate 13 and the first additional member 16, or simultaneously with connecting the first connecting plate 13 and the first additional member 16, or the first connecting plate 13 and the first additional member 16 11 (c), with the head of the second connecting bolt 22 facing up, the bolt hole 27 drilled in the connecting plate portion 54 of the second additional member 21 is connected to the bolt hole 27. The second connecting bolt 22 is inserted downward from above the second extension member 21, and the second connecting bolt 22 is inserted into the bolt hole 27 of the lower flange 25 of the existing steel beam 11. The screw portion 56 of the second connecting bolt 22 is inserted into or screwed into the bolt hole 27 drilled in the second connecting plate 20 and exposed below the second connecting plate 20 as shown in FIG. The nut 40 (fixing means) is screwed onto the screw portion 56 of the second connecting bolt 22.

  By screwing the nut 40 to the screw portion 56 of the second connecting bolt 22 exposed below the second connecting plate 20, the second additional member 21 and the second connecting plate 20 are connected, and the existing steel beam 11 The lower flange 25 and the second connecting plate 20 are connected, and the new steel frame second stud 19 is connected to the existing steel beam 11. The second extension member 21 has a fixing bolt inserted or screwed into the bolt hole 27 formed in the mounting plate 53 and the bolt hole 27 of the web 26 of the H-shaped steel 23 forming the existing steel beam 11. 44 is fixed to the existing steel beam 11.

  FIG. 12 is a front view showing an example of a connection process for constructing the steel structure 10C of FIG. In the connecting step, as shown in FIG. 12A, an insertion hole 30 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 using a core drill 58. . Next, as shown in FIG. 12B, the insertion rod 62 fixed to the first connecting plate 13 is moved downward toward the insertion hole 30, the insertion rod 62 is inserted into the insertion hole 30, and the first One connecting plate 13 is installed on the concrete slab 28.

  After inserting the insertion rod 62 into the insertion hole 30, as shown in FIG. 12C, the filler 18 is filled (injected) into the insertion hole from the filler filling port 60. The filler 18 filled in the insertion hole 30 is cured in the insertion hole 30 when the curing period has elapsed. In the insertion hole 30, as shown in FIG. 12D, the insertion rod 62 is integrated with the filler 18 cured in the insertion hole 30. In the steel structure 10 </ b> C, shear resistance / transmission means that resists shear stress generated at the joint between the existing steel beam 11 and the new steel first inter-column 12 is formed from the insertion rod 62 and the filler 18 hardened in the insertion hole 30. Is done.

  As another example of the connecting step for constructing the steel structure 10C of FIG. 10, after inserting the insertion hole 30 at a predetermined position of the concrete slab 28, the insertion hole 30 is filled with the filler 18. After filling the insertion hole 30 with the filler 18, the insertion rod 62 fixed to the first connecting plate 13 is moved downward toward the insertion hole 30, and the insertion rod 62 is inserted into the insertion hole 30 (filler 18). Then, the first connecting plate 13 is installed on the concrete slab 28. In this case, the filler filling port 60 is not made in the first connecting plate 13.

  The steel structure 10C has a through-hole 29 drilled in a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the H-section steel 23 (second H-section steel) forming the existing steel beam 11; The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting plate 13 and the first connecting plate 15 are placed (placed) on the concrete slab 28 (concrete frame) constructed on the upper flange 24 of the first connecting plate 13 and inserted into the through hole 29 of the concrete slab 28. By connecting the additional member 16 (existing steel beam 11) and connecting the second additional member 21 (existing steel beam 11) and the second connecting plate 20 by the second connecting bolt 22, the new steel frame first stud 12 is connected. Connected to the existing steel beam 11 Since the new steel frame second stud 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 15 is inserted is drilled in the concrete slab 28, and the filler 61 is filled in the through hole 29. The lower flange 25 of the existing steel beam 11 and the second connection plate 20 are connected by the second connection bolt 22 while the upper flange 24 of the existing steel beam 11 and the first connection plate 13 are connected by the first connection bolt 15. There is no need to carry out the hanger work, and it is possible to prevent the occurrence of hail noise, hail vibration and the generation of a large amount of dust, and the existing steel beam 11 of the existing building is maintained in a quiet and clean environment. The new steel frame first stud 12 can be attached to the existing steel beam 11 and the new steel frame second stud 19 can be attached to the existing steel beam 11.

  Since the steel structure 10C can prevent the generation of a hail and vibration and a large amount of dust, the work can be performed during the daytime on weekdays, and the daytime time on weekdays can be used effectively. The new steel frame first stud 12 (H steel bar 31) can be attached to the existing steel beam 11 (H-shaped steel 23) of the existing building efficiently in time, and the new steel second stud 19 (H A section steel 46) can be attached. Since the steel structure 10C does not need to hang concrete, it can save time and labor for carrying out restoration work on the hanger, and also reduce the strength of the concrete slab 28 (concrete frame) and the concrete slab 28. While preventing deformation, the new steel first inter-column 12 (H-shaped steel 31) can be efficiently attached in a short time to the existing steel beam 11 (H-shaped steel 23) of the existing building, and the new steel frame is attached to the existing steel beam 11 The second stud 19 (H-section steel 46) can be efficiently attached in a short time.

  In the steel structure 10 </ b> C, the new steel frame first stud 12 is connected to the existing steel beam 11 using the first connection bolt 15 inserted through the through hole 29, and the new steel frame second is used using the second connection bolt 22. Since the stud 19 is connected to the existing steel beam 11, welding work is not required, the deterioration of the strength of the steel member and the deformation of the steel member due to the heat of welding can be prevented, and there is no risk of fire occurrence. New steel frame first stud 12 (H-shaped steel 31) can be safely attached to existing steel beam 11 (H-shaped steel 23) of all existing buildings such as high-rise buildings, high-rise buildings, middle-rise buildings, low-rise buildings, factories, etc. The new steel frame second stud 19 (H-shaped steel 46) can be safely attached to the existing steel beam 11.

  In the steel structure 10C, the insertion rod 62 inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 are made of the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column 12 (H-shaped steel 31). ) To form the shear resistance and transmission means that resists the shear stress generated at the joint portion, so that an external force such as an earthquake acts on the existing building and joins the existing steel beam 11 and the new steel first pillar 12 When a shear stress is generated in the portion, the shear resistance / transmission means formed by the insertion rod 62 inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 resists the shear stress, and the concrete Smooth transmission of shear stress can be performed between the slab 28 (concrete frame) and the new steel frame first inter-column 12.

  In the steel structure 10C, the first connecting bolt 15 inserted into the through hole 29 and the filler 61 hardened in the through hole 29 are composed of the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud (H-shaped steel). 27), the bending resistance / transmission means that resists the bending stress generated in the joint portion is formed, so that an external force such as an earthquake acts on the existing building, and the existing steel beam 11 and the new steel frame first stud 12 When bending stress is generated in the joint, the bending resistance / transmission means formed by the first connecting bolt 15 inserted into the through hole 29 and the filler 61 hardened in the through hole 29 resists the bending stress. On the other hand, it is possible to smoothly transmit the bending stress between the existing steel beam 11 or the concrete slab 28 (concrete frame) and the new steel first inter-column 12.

  In the steel structure 10 </ b> C, shear resistance / transmission means is formed along the web 34 of the H-shaped steel 31 of the new steel first intermediate column 12, and in the vicinity of one flange 32 of the H-shaped steel 31 of the new steel first intermediate column 12. Since the bending resistance / transmission means is formed in the vicinity of the flange 33 and the other flange 33, an external force such as an earthquake acts on the existing building and shears at the joint between the existing steel beam 11 and the new steel first intermediate post 12. When stress or bending stress is generated, the shear resistance / transmission means formed along the web 34 of the first H-section steel 31 forming the new steel frame first stud 12 and the new steel frame first stud 12 are formed. While the bending resistance / transmission means formed in the vicinity of one flange 32 and the vicinity of the other flange 33 of the first H-section steel 31 sufficiently resists shear stress and bending stress, the existing steel beam 11 (H Shaped steel 23) and concrete slurry 28 can be performed smoothly transfer the shear stress and bending stress between the (concrete skeleton) and the new steel first stud 12 (H-section steel 31).

  FIG. 13 is a front view of a steel structure 10D shown as another example. In FIG. 13, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel frame structure 10D includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 15 and a plurality of first connection bolts 15. The first extension member 16, the filler 61 and the plurality of metal pillars 63, the new steel frame second interphase pillar 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection bolts 22. And is formed from. There are no particular restrictions on the number of steel sleeves 14, the number of first and second connecting bolts 15, 22, the number of metal pillars 63, and the number of first and second extension members 16, 21. The size of the steel structure 10 </ b> D The number of them is determined according to the required strength.

  In the existing steel beam 11 and the new steel frame first stud 12 that form the steel structure 10D, the same H-section steels 23 and 31 (first H-section steel and second H-section steel) as those in FIG. It is used. An existing concrete slab 28 (concrete frame) is constructed on the existing steel beam 11 (upper flange 24), and a predetermined cross section of the concrete slab 28 has a circular through-hole 29 arranged in a horizontal direction and a circular cross section. An insertion hole 30 is drilled.

  The first connecting plate 13 forming the steel structure 10D is the same as that shown in FIG. 1, but an insertion hole 64 is drilled in the central portion 31 of the first connecting plate 13 instead of the bolt hole 27. The first connecting plate 13 is disposed (placed) on a concrete slab 28 (concrete frame). A filler 38 is filled between the first connecting plate 13 and the concrete slab 28. The steel sleeves 14 forming the steel structure 10D are the same as those in FIG. 1 and are inserted and installed in through holes 29 drilled in the concrete slab 28.

  The first connection bolts 15 forming the steel structure 10D are the same as those in FIG. 1 and are inserted into the steel sleeve 14 (through hole 29) to form the existing steel beam 11 from the first connection plate 13. The steel 23 extends in the vertical direction toward the upper flange 24. The first connecting bolt 15 is connected to the first connecting plate 13 by screwing a nut 40 (fixing means) to a screw portion 39 exposed vertically upward from the first connecting plate 13. The first extension members 16 forming the steel structure 10D are the same as those in FIG. 1 and are arranged on the upper flange 24 side (just below the upper flange 24) of the existing steel beam 11. The first extension member 16 is fixed to the web 26 of the existing steel beam 11 by fixing bolts 44 and nuts.

  The first connection bolt 15 is inserted into the bolt hole 27 of the connection plate portion 42 of the first extension member 16, inserted into the steel sleeve 14 (through hole 29), and into the bolt hole 27 of the first connection plate 13. The first connecting plate 13 and the first additional member 16 are connected by being inserted or screwed and fixed to the first connecting plate 13 by the nut 40 screwed to the screw portion 39. The filler 61 forming the steel structure 10 </ b> D is filled in the through hole 29 drilled in the concrete slab 28 and hardened in the through hole 29.

  In the steel structure 10D, the gap between the through hole 29 and the outer peripheral surface of the steel sleeve 14 is filled with the filler 61, and the gap between the first connection bolt 15 and the inner peripheral surface of the steel sleeve 14 is filled with the filler 61. Is buried by. In the through hole 29, the filler 61 is hardened, and the first connecting bolt 15, the steel sleeve 14, and the hardened filler 61 are integrated.

  In the steel structure 10D, the first connection plate 13 and the first additional member 16 (the existing steel beam 11) are connected by the first connection bolt 15 inserted through the steel sleeve 14 (through hole 29), so that the new structure is provided. The lower end of the H-section steel 31 (first H-section steel) that forms the first steel frame 12 is connected to the upper flange 24 of the H-section steel 23 (second H-section) that forms the existing steel beam 11, A new steel frame first stud 12 is attached to the existing steel beam 11.

  In the steel structure 10D, the first connecting bolt 15 resists tensile stress, and the steel sleeve 14 and the filler 61 resist compressive stress. Therefore, the first connecting bolt 15, the steel sleeve 14 and the filler 61 are already provided. Bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) generated at the joint between the steel beam 11 (H-shaped steel 23) and the newly-installed first steel frame 12 (H-shaped steel 31) is formed. . The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-shaped steel 31 forming the new steel frame first stud 12. The central portion of the new steel frame first inter-column 12 is formed in the vicinity of one flange 32 of the H-section steel 31 forming the new steel frame first inter-column 12 and the central portion of the new steel frame first inter-column 12. And it is formed in the vicinity of the other flange 33 of the H-section steel 31 that forms the new steel frame first stud 12.

  These metal pillars 63 are made of steel and formed into a columnar shape. The metal pillar 63 extends in the vertical direction from the first connecting plate 13 toward the existing steel beam 11 (upper flange 24). The metal column 63 is inserted into the insertion hole 64 drilled in the central portion 35 of the first connecting plate 13 and is inserted into the insertion hole 30 drilled in the concrete slab 28 (concrete frame). The shape (including the diameter and length) of the metal column 63 is determined in consideration of necessary proof stress. In FIG. 13, the metal column 63 passes through the concrete slab 28 and reaches the existing steel beam 11 (upper flange 24), but may extend to the middle of the concrete slab 28.

  In the steel structure 10D, the metal column 63 is a shear resistance / transmission resistance unit that resists the shear stress generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel first inter-column 12 (H-shaped steel 31). Is forming. The shear resistance / transmission resistance means is formed along the web 34 of the H-shaped steel 31 that forms the new steel frame first intermediate column 12 in the center of the new steel frame first intermediate column 12.

  An H-section steel 46 (third H-section steel) that is the same as that in FIG. The new steel frame second inter-column 19 is located below the new steel frame first inter-column 12, is attached to the existing steel beam 11, and extends vertically downward from the existing steel beam 11. The second connecting plate 20 forming the steel structure 10D is the same as that shown in FIG. Bolt holes 27 are drilled in the central portion 50 and both side portions 51 and 52 of the second connecting plate 20.

  The second additional member 21 forming the steel structure 10D is the same as that of FIG. Yes. The second extension member 21 is fixed to the existing steel beam 11 by a fixing bolt 44 inserted or screwed into the bolt hole 27 drilled in the mounting plate 53 and the bolt hole 27 of the web 26 of the existing steel beam 11. ing. A nut (not shown) is screwed to the fixing bolt 44.

  The second connection bolt 22 forming the steel structure 10D is the same as that of FIG. ing. The second connection bolt 22 is inserted into the bolt hole 27 of the connection plate portion 54 of the second extension member 21 and is inserted into the bolt hole 27 drilled in the central portion 50 and both side portions 51, 52 of the second connection plate 20. It is screwed. The second connecting bolt 22 connects the second extension member 21 and the second connecting plate 20, and the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 and the second connecting plate 20 (the new steel frame second). The spacer 19) is connected.

  FIG. 14 is a front view showing an example of a connection process for constructing the steel structure 10D of FIG. The connection process for constructing the steel structure 10D in FIG. 13 is the same as the connection process for constructing the steel structure 10B in FIG. In the connecting step, as shown in FIG. 14A, the insertion hole 30 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 using the core drill 58. . Next, as shown in FIG. 14B, the metal pillar 63 is inserted into the insertion hole 30. After inserting the metal pillar 63 into the insertion hole 30, as shown in FIG. 14C, the first connecting plate 13 is placed (placed) on the concrete slab 28 and shown in FIG. Thus, the top portion 65 of the metal column 63 is inserted into the insertion hole 64 drilled in the first connecting plate 13. In the steel structure 10 </ b> D, the metal column 63 forms a shear resistance / transmission means that resists the shear stress generated at the joint between the existing steel beam 11 and the new steel first inter-column 12.

  The steel structure 10D drills a through-hole 29 in a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the H-section steel 23 (second H-section steel) that forms the existing steel beam 11. The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting bolt 15 is placed (placed) on the concrete slab 28 (concrete frame) constructed on the upper flange 24 and inserted into the steel sleeve 14 installed in the through hole 29 of the concrete slab 28. By connecting the first connecting plate 13 and the first additional member 16 (existing steel beam 11) and connecting the second additional member 21 (existing steel beam 11) and the second connecting plate 20 by the second connecting bolt 22 New steel frame 1 Since the column 12 is connected to the existing steel beam 11 and the new steel frame second intermediate column 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 15 is inserted is drilled in the concrete slab 28, and the through hole The steel sleeve 14 is installed at 29, the filler 61 is filled into the through hole 29, and the second connection is made while connecting the upper flange 24 of the existing steel beam 11 and the first connection plate 13 by the first connection bolt 15. It is only necessary to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20 with the bolts 22, so that it is not necessary to carry out the hanger work, and it is possible to prevent the occurrence of hail noises, hail vibrations and a large amount of dust. While maintaining a quiet and clean environment, the new steel frame first stud 12 can be attached to the existing steel beam 11 of the existing building, and the new steel frame second space can be attached to the existing steel beam 11. 19 can be attached to.

  Since the steel structure 10D can prevent the generation of the hail and vibration and the generation of a large amount of dust, the work can be performed during the daytime on weekdays, and the daytime time on weekdays can be used effectively. The new steel frame first stud 12 (H steel bar 31) can be attached to the existing steel beam 11 (H-shaped steel 23) of the existing building efficiently in time, and the new steel second stud 19 (H A section steel 46) can be attached. Since the steel structure 10D does not need to hang concrete, it is possible to save time and labor for carrying out restoration work on the hanger, while preventing a decrease in the strength of the concrete slab 28 and deformation of the concrete slab 28. The new steel frame first stud 12 (H-beam 31) can be efficiently attached in a short time to the existing steel beam 11 (H-shaped steel 23) of the existing building, and the new steel frame second stud 19 is attached to the existing steel beam 11. (H-section steel 46) can be efficiently attached in a short time.

  In the steel structure 10D, the first steel stud 12 is connected to the existing steel beam 11 using the first connecting bolt 15 inserted through the steel sleeve 14 (through hole 29), and the second connecting bolt 22 is used. Because the new steel frame second stud 19 is connected to the existing steel beam 11, welding work is not required, and it is possible to prevent the deterioration of the strength of the steel member and the deformation of the steel member due to the heat of welding. There is no danger, and the new steel frame first stud 12 (H-section steel 31) is safely installed on the existing steel beam 11 (H-section steel 23) of all existing buildings such as high-rise buildings, high-rise buildings, middle-rise buildings, low-rise buildings, and factories. The new steel frame second stud 19 (H-shaped steel 46) can be safely attached to the existing steel beam 11.

  In the steel structure 10D, the metal hole 63 inserted into the insertion hole 64 and the insertion hole 30 is generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column 12 (H-shaped steel 31). Since the shear resistance / transmission means against the shear stress is formed, an external force such as an earthquake acts on the existing building, and a shear stress is generated at the joint between the existing steel beam 11 and the new steel first inter-column 12. At this time, the shear resistance / transmission means formed by the insertion hole 64 and the metal column 63 inserted into the insertion hole 30 resists the shear stress, while the concrete slab 28 (concrete frame) and the newly-constructed steel first first column 12 Smooth transmission of shear stress can be performed between the two.

  In the steel structure 10D, the first connecting bolt 15 inserted through the through hole 29, the steel material sleeve 14 installed in the through hole 29, and the filler 61 hardened in the through hole 29 are provided with the existing steel beam 11 (H-shaped steel 23). ) And the new steel frame first stud 12 (H-section steel 31), bending resistance and transmission means that resist bending stress (tensile stress and compressive stress) generated at the joint are formed. When a bending stress is generated at the joint between the existing steel beam 11 and the new steel first stud 12, the first connecting bolt 15 inserted through the through hole 29 and the through hole 29 are installed. While the bending resistance / transmission means formed from the steel sleeve 14 and the filler 61 hardened in the through hole 29 resists the bending stress, the existing steel beam 11 and the concrete slab 28 (concrete frame) and the first steel frame 1 It is possible to perform a smooth transfer of bending stresses between the 12.

  In the steel structure 10 </ b> D, shear resistance / transmission means is formed along the web 34 of the H-shaped steel 31 of the new steel first intermediate column 12, and in the vicinity of one flange 32 of the H-shaped steel 31 of the new steel first intermediate column 12. Since the bending resistance / transmission means is formed in the vicinity of the flange 33 and the other flange 33, an external force such as an earthquake acts on the existing building and shears at the joint between the existing steel beam 11 and the new steel first intermediate post 12. When stress or bending stress is generated, the shear resistance / transmission means formed along the web 34 of the first H-section steel 31 forming the new steel frame first stud 12 and the new steel frame first stud 12 are formed. While the bending resistance / transmission means formed in the vicinity of one flange 32 and the vicinity of the other flange 33 of the first H-section steel 31 sufficiently resists shear stress and bending stress, the existing steel beam 11 (H Shaped steel 23) and concrete slurry 28 can be performed smoothly transfer the shear stress and bending stress between the (concrete skeleton) and the new steel first stud 12 (H-section steel 31).

  FIG. 15 is a front view of a steel structure 10E shown as another example. In FIG. 15, the vertical direction is indicated by an arrow A and the horizontal direction is indicated by an arrow B. The steel structure 10E shown in FIG. 15 differs from the steel structure 10D shown in FIG. 13 in that the insertion hole 64 drilled in the first connecting plate 13, the insertion hole 30 drilled in the concrete slab 28, the insertion hole 64, and Since the filler 18 is filled in the gap between the outer peripheral surface of the metal pillar 63 inserted in the insertion hole 30, and the other configuration is the same as those of the steel structure 10D in FIG. A detailed description of the configuration of the steel structure 10E is omitted by giving the same reference numerals as the steel structure 10D and using the description of the steel structure 10D.

  The steel structure 10E includes an existing steel beam 11 and a new steel first inter-column 12 of an existing structure, a first connecting plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connecting bolts 15, and a plurality of first connecting bolts 15. The first extension member 16, the fillers 18, 61 and the plurality of metal pillars 63, the new steel frame second intermediate pillar 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection parts. The bolt 22 is formed. The metal column 63 is inserted into the insertion hole 64 drilled in the central portion 35 of the first connecting plate 13 and is inserted into the insertion hole 30 drilled in the concrete slab 28 (concrete frame). A gap between the insertion hole 30 and the outer peripheral surface of the metal column 63 is filled with the filler 18 filled in the insertion hole 30. Filler 18 is filled in a gap formed between the outer peripheral surface of top 65 of metal pillar 63 and insertion hole 64 of first connecting plate 13, and the gap is filled with filler 18.

  In the steel structure 10E, the metal pillar 63 is integrated with the filler 18 (filler) hardened in the insertion hole 64 and the insertion hole 30, and the metal pillar 63, the filler 18 hardened in the insertion hole 64 and the insertion hole 30, and Forms a shear resistance / transmission means that resists the shear stress generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first inter-column 12 (H-shaped steel 31). The shearing resistance / transmission means is formed along the web 34 of the H-section steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  FIG. 16 is a front view showing an example of a connection process for constructing the steel structure 10E of FIG. The connection process for constructing the steel structure 10E in FIG. 15 is the same as the connection process for constructing the steel structure 10B in FIG. In the connecting step, as shown in FIG. 16A, an insertion hole 30 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 using a core drill 58. . Next, as shown in FIG. 16B, the metal pillar 63 is inserted into the insertion hole 30. After inserting the metal pillar 63 into the insertion hole 30, as shown in FIG. 16C, the filler 18 is filled in the gap between the insertion hole 30 and the outer peripheral surface of the metal pillar 63. The gap between the insertion hole 30 and the outer peripheral surface of the metal column 63 is filled. Note that the metal pillar 63 may be inserted into the insertion hole 30 after the insertion hole 30 is filled with the filler 18.

  After the filling material 18 is filled, the first connecting plate 13 is placed (placed) on the concrete slab 28 as shown in FIG. The top portion 65 of the metal column 63 is inserted into the insertion hole 64 drilled in the first connecting plate 13. Filler 18 is filled in a gap formed between the outer peripheral surface of top 65 of metal pillar 63 and insertion hole 64 of first connecting plate 13, and the gap is filled with filler 18. In the steel structure 10E, the shear resistance against the shear stress generated at the joint between the existing steel beam 11 and the new steel first inter-column 12 from the metal column 63, the insertion hole 64, and the filler 18 hardened in the insertion hole 30 is obtained. A transmission means is formed.

  The steel structure 10E has the following effects in addition to the effects of the steel structure 10D. In the steel structure 10E, the metal column 63, the insertion hole 64, and the filler 18 hardened in the insertion hole 30 are shear resistant against the shear stress generated at the joint between the existing steel beam 11 and the new steel first intermediate column 12. Since the transmission means is formed, when an external force such as an earthquake acts on an existing building and a shear stress is generated at the joint between the existing steel beam 11 and the new steel first inter-column 12, the insertion hole 64 and the insertion hole 64 are inserted. The concrete slab 28 (concrete frame) and the shear resistance / transmission means formed from the metal pillar 63 inserted in the hole 30 and the insertion hole 64 and the filler 18 hardened in the insertion hole 30 resist the shear stress. Smooth transmission of shear stress can be performed between the new steel frame first studs 12.

  FIG. 17 is a front view of a steel structure 10F shown as another example. In FIG. 17, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel structure 10F shown in FIG. 17 is different from the steel structure 10D shown in FIG. 13 in that the insertion hole 64 drilled in the first connecting plate 13, the insertion hole 30 drilled in the concrete slab 28, the insertion hole 64, and The gap between the metal pillar 63 inserted into the insertion hole 30 is filled with the filler 18 and the holding plate 66 that holds the top 65 of the metal pillar 63 is provided. Since it is the same as those of the steel structure 10D of FIG. 13, the same reference numerals as those of the steel structure 10D are attached, and the description of the steel structure 10D is used to provide a detailed description of the structure of the steel structure 10F. Is omitted.

  The steel structure 10F includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 15 and a plurality of first connection bolts 15. The first extension member 16, the fillers 18, 61 and the plurality of metal pillars 63, the pressing plate 66, the new steel frame second intermediate pillar 19 and the second connecting plate 20, the plurality of second extension members 21 and the plurality The second connection bolts 22 are formed. The metal column 63 is inserted into the insertion hole 64 drilled in the central portion 35 of the first connecting plate 13 and is inserted into the insertion hole 30 drilled in the concrete slab 28 (concrete frame). The gap between the insertion hole 30 and the outer peripheral surface of the metal column 63 is filled with the filler 18, and the gap between the insertion hole 30 and the outer peripheral surface of the metal column 63 is filled with the filler 18 cured in the insertion hole 30. Yes. Filler 18 is filled in a gap formed between the outer peripheral surface of top 65 of metal pillar 63 and insertion hole 64 of first connecting plate 13, and the gap is filled with filler 18.

  The pressing plate 66 is made of steel and is formed into a plate shape. The holding plate 66 is disposed in the vicinity including the top portion 65 of the metal column 63 inserted into the insertion hole 64 of the first connecting plate 13 and the insertion hole 30 of the concrete slab 28, and is mounted immediately above the top portion 65 of the metal column 63. Is placed. The holding plate 66 is fixed to the upper surface of the first connecting plate 13 by screwing a fixing bolt 44 into the bolt hole 27 drilled in the pressing plate 66 and the bolt hole 27 drilled in the first connecting plate 13. . The holding plate 66 is fixed to the first connecting plate 13 to hold the top portion 65 of the metal column 63 and prevent the metal column 63 from being removed from the insertion hole 64 and the insertion hole 30.

  In the steel structure 10 </ b> F, the metal pillar 63 is integrated with the filler 18 hardened in the insertion hole 64 and the insertion hole 30, and the filler 18 and metal pillar 63 hardened in the metal pillar 63, the insertion hole 64 and the insertion hole 30. The holding plate 66 that holds the top 65 forms a shear resistance / transmission means that resists the shear stress generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel first inter-column 12 (H-shaped steel 31). doing. The shearing resistance / transmission means is formed along the web 34 of the H-section steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  FIG. 18 is a front view showing an example of a connection process for constructing the steel structure 10F of FIG. In addition, the connection process for constructing the steel structure 10F in FIG. 17 is the same as the connection process for constructing the steel structure 10B in FIG. In the connecting step, as shown in FIG. 18A, the insertion hole 30 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 using a core drill 58. . Next, as shown in FIG. 18B, the metal pillar 63 is inserted into the insertion hole 30. After inserting the metal pillar 63 into the insertion hole 30, as shown in FIG. 18C, the filler 18 is filled in the gap between the insertion hole 30 and the outer peripheral surface of the metal pillar 63. The gap between the insertion hole 30 and the outer peripheral surface of the metal column 63 is filled.

  After filling the filler 18, as shown in FIG. 18D, the first connecting plate 13 is placed (placed) on the concrete slab 28, and the insertion hole 64 drilled in the first connecting plate 13. The top portion 65 of the metal pillar 63 is inserted into. The gap formed between the outer peripheral surface of the top portion 65 of the metal column 63 and the insertion hole 64 of the first connecting plate 13 is filled with the filler 18, and the gap is filled with the filler 18. Next, as shown in FIG. 18E, the pressing plate 66 is placed immediately above the top portion 65 of the metal column 63. The holding plate 66 is disposed in the vicinity including the top portion 65 of the metal column 63 inserted into the insertion hole 64 of the first connecting plate 13 and the insertion hole 30 of the concrete slab 28. After the pressing plate 66 is placed immediately above the top 65 of the metal pillar 63, the bolt hole 27 drilled in the pressing plate 66 and the bolt drilled in the first connecting plate 13 as shown in FIG. A fixing bolt 44 is screwed into the hole 27 to fix the holding plate 66 to the upper surface of the first connecting plate 13. In the steel structure 10F, the metal column 63, the insertion hole 64, and the filler 18 hardened in the insertion hole 30 and the pressing plate 66 resist the shear stress generated at the joint between the existing steel beam 11 and the new steel first intermediate column 12. Shear resistance and transmission means are formed.

  The steel structure 10F has the following effects in addition to the effects of the steel structure 10D. In the steel structure 10F, the metal column 63, the insertion hole 64, the filler 18 hardened in the insertion hole 30, and the pressing plate 66 that presses the top 65 of the metal column 63 are formed between the existing steel beam 11 and the new steel frame first intermediate column 12. Since the shear resistance and transmission means against the shear stress generated at the joint is formed, an external force such as an earthquake acts on the existing building, and the joint between the existing steel beam 11 and the new steel first inter-column 12 is sheared. When stress occurs, it is formed from the insertion hole 64 and the metal column 63 inserted into the insertion hole 30, the filler 18 hardened in the insertion hole 64 and the insertion hole 30, and the pressing plate 66 that presses the top 65 of the metal column 63. The shearing resistance / transmission means made to transmit the shearing stress smoothly between the concrete slab 28 (concrete frame) and the new steel frame first stud 12 while resisting the shearing stress. It is possible.

  FIG. 19 is a front view of a steel structure 10G shown as another example, and FIG. 20 is a perspective view of a connecting member 67 shown as an example. In FIG. 19, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel structure 10G includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connecting plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connecting bolts 15 and a plurality of first connecting bolts 15. The first extension member 16, the plurality of connection members 67 and fillers 18, 61, the new steel frame second stud 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection bolts. 22. There are no particular restrictions on the number of steel sleeves 14, the number of first and second connecting bolts 15, 22, the number of first and second extension members 16, 21, and the number of connecting members 67. The size of the steel structure 10 </ b> G The number of them is determined according to the required strength.

  In the existing steel beam 11 and the new steel frame first stud 12 that form the steel structure 10G, the same H-section steels 23 and 31 (first H-section steel and second H-section steel) as those in FIG. It is used. An existing concrete slab 28 (concrete frame) is constructed on the existing steel beam 11 (upper flange 24), and a predetermined cross section of the concrete slab 28 has a circular through-hole 29 arranged in a horizontal direction and a circular cross section. An insertion hole 30 is drilled. The 1st connection board 13 which forms the steel frame structure 10G is the same as that of FIG. 1, and is arrange | positioned (placed) on the concrete slab 28 (concrete frame). A filler 38 is filled between the first connecting plate 13 and the concrete slab 28.

  The steel sleeve 14 forming the steel structure 10G is the same as that shown in FIG. 1 and is installed in a through hole 29 drilled in the concrete slab 28 and extends in the vertical direction. The first connection bolts 15 forming the steel structure 10G are the same as those in FIG. 1 and are inserted into the steel sleeve 14 (through hole 29) to form the existing steel beam 11 from the first connection plate 13. The steel 23 extends in the vertical direction toward the upper flange 24. The first connecting bolt 15 is connected to the first connecting plate 13 by screwing a nut 40 (fixing means) to a screw portion 39 exposed vertically upward from the first connecting plate 13.

  The first additional member 16 forming the steel structure 10G is the same as that of FIG. 1 and is disposed on the upper flange 24 side of the existing steel beam 11 (directly below the upper flange 24). The first extension member 16 is fixed to the web 26 of the existing steel beam 11 by fixing bolts 44 and nuts. The first connection bolt 15 is inserted into the bolt hole 27 of the connection plate portion 42 of the first extension member 16, inserted into the steel sleeve 14 (through hole 29), and into the bolt hole 27 of the first connection plate 13. The first connecting plate 13 and the first additional member 16 are connected by being inserted or screwed and fixed to the first connecting plate 13 by the nut 40 screwed to the screw portion 39. The filler 61 forming the steel structure 10 </ b> G is filled in the through hole 29 drilled in the concrete slab 28 and hardened in the through hole 29.

  In the steel structure 10G, the gap between the through hole 29 and the outer peripheral surface of the steel sleeve 14 is filled with the filler 61, and the gap between the first connecting bolt 15 and the inner peripheral surface of the steel sleeve 14 is filled with the filler 61. Is buried by. In the through hole 29, the filler 61 is hardened, and the first connecting bolt 15, the steel sleeve 14, and the hardened filler 61 are integrated.

  In the steel structure 10G, the first connection plate 13 and the first additional member 16 (existing steel beam 11) are connected by the first connection bolt 15 inserted through the steel sleeve 14 (through hole 29). The lower end of the H-section steel 31 (first H-section steel) that forms the first steel frame 12 is connected to the upper flange 24 of the H-section steel 23 (second H-section) that forms the existing steel beam 11, A new steel frame first stud 12 is attached to the existing steel beam 11.

  In the steel structure 10G, since the first connecting bolt 15 resists tensile stress and the steel sleeve 14 and the filler 61 resist compressive stress, the first connecting bolt 15, the steel sleeve 14 and the filler 61 are already provided. Bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) generated at the joint between the steel beam 11 (H-shaped steel 23) and the newly-installed first steel frame 12 (H-shaped steel 31) is formed. . The bending resistance / transmission means is formed on both sides of the new steel frame first stud 12 and in the vicinity of one flange 32 and the other flange 33 of the H-shaped steel 31 forming the new steel frame first stud 12. The central portion of the new steel frame first inter-column 12 is formed in the vicinity of one flange 32 of the H-section steel 31 forming the new steel frame first inter-column 12 and the central portion of the new steel frame first inter-column 12. And it is formed in the vicinity of the other flange 33 of the H-section steel 31 that forms the new steel frame first stud 12.

  These connecting members 67 are made of steel. The connecting member 67 is formed of a leg portion 68, a plate-like base 69, and a connecting bolt 70. The leg portion 68 extends in the vertical direction and is embedded (bite into) the inside (insertion hole 30) from the upper surface of the concrete slab 28. The plate-like base 69 is formed in a disk shape, is connected to the leg portion 68, and extends in the horizontal direction. A bolt hole 27 into which the screw portion 71 of the connection bolt 70 is screwed is formed at the center of the plate-like base 69. The leg portion 68 and the plate-like base 69 are made integrally.

  The connection bolt 70 has a screw head 71 screwed into the bolt hole 27 of the plate-like base 69 with its head positioned below the plate-like base 69. The connection bolt 70 is attached to the plate-like base 69 by screwing the nut 40 into a portion of the screw portion 71 of the connection bolt 70 that is exposed upward from the plate-like base 69. In the steel structure 10G, the connecting member 67 (leg portion 68) is integrated with the filler 18 hardened in the insertion hole 29, and the connecting member 67 and the filler 18 hardened in the insertion hole 30 are connected to the existing steel beam 11 (H Shear resistance / transmission means is formed against the shear stress generated at the joint between the section steel 23) and the new steel frame first inter-column 12 (H-section steel 31). The shearing resistance / transmission means is formed along the web 34 of the H-section steel 31 that forms the new steel frame first intermediate column 12 at the center of the new steel frame first intermediate column 12.

  The same H-section steel 46 (third H-section steel) as that in FIG. 1 is used for the new steel-frame second stud 19 that forms the steel structure 10G. The new steel frame second inter-column 19 is located below the new steel frame first inter-column 12, is attached to the existing steel beam 11, and extends vertically downward from the existing steel beam 11. The second connecting plate 20 forming the steel structure 10G is the same as that in FIG. 1 and is attached to the upper ends of the new steel frame second studs 19 (the upper ends of the flanges 47 and 48 and the web 49) by welding. Bolt holes 27 are drilled in the central portion 50 and both side portions 51 and 52 of the second connecting plate 20.

  The second additional member 21 forming the steel structure 10G is the same as that of FIG. 1 and is arranged on the lower flange 25 side (directly above the lower flange 25) of the H-shaped steel 23 forming the existing steel beam 11. Yes. The second extension member 21 is fixed to the existing steel beam 11 by a fixing bolt 44 inserted or screwed into the bolt hole 27 drilled in the mounting plate 53 and the bolt hole 27 of the web 26 of the existing steel beam 11. ing. A nut (not shown) is screwed to the fixing bolt 44.

  The second connection bolt 22 forming the steel structure 10G is the same as that of FIG. ing. The second connection bolt 22 is inserted into the bolt hole 27 of the connection plate portion 54 of the second extension member 21 and is inserted into the bolt hole 27 drilled in the central portion 50 and both side portions 51, 52 of the second connection plate 20. It is screwed. The second connecting bolt 22 connects the second extension member 21 and the second connecting plate 20, and the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11 and the second connecting plate 20 (the new steel frame second). The spacer 19) is connected.

  FIG. 21 is a front view showing an example of a connection process for constructing the steel structure 10G of FIG. In addition, the connection process for constructing the steel structure 10G in FIG. 19 is the same as the connection process for constructing the steel structure 10B in FIG. In the connecting step, as shown in FIG. 21A, an insertion hole 30 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 using a core drill 58. As shown in FIG. 21B, the filler 18 is filled into the insertion hole 30. Next, as shown in FIG. 21C, the connecting member 67 is inserted into the insertion hole 30 (filler 18), and as shown in FIG. The base 69 and the head of the connection bolt 70 are inserted into the insertion hole 30 and installed.

  When the leg portion 68 of the connecting member 67, the plate-like base 69, and the head of the connecting bolt 70 are inserted into the insertion hole 30, the leg portion 68 is embedded in the peripheral edge portion of the insertion hole 30. A gap between the insertion hole 30 and the leg portion 68 of the connecting member 67 is filled with the filler 18 hardened in the insertion hole 30. Note that the insertion hole 30 may not be filled with the filler 18, and the filling operation of the filler 18 into the insertion hole 30 can be omitted. Next, as shown in FIG. 21 (e), the screw member 71 of the connecting bolt 70 is inserted into the bolt hole 27 of the first connecting plate 13, and the nut 40 is screwed into the screw member 71, thereby connecting the connecting member. 67 is attached to the first connecting plate 13.

  In the steel structure 10G, a shear resistance / transmission means that resists shear stress generated at the joint between the existing steel beam 11 and the new steel first inter-column 12 is formed by the connecting member 67 and the filler 18 hardened in the insertion hole 30. Is done.

  The steel structure 10G drills a through hole 29 in a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the H-section steel 23 (second H-section steel) forming the existing steel beam 11; The first connecting plate 13 attached to the lower end of the H-shaped steel 31 (first H-shaped steel) that forms the new steel frame first stud 12 is an H-shaped steel 23 (second H-shaped) that forms the existing steel beam 11. The first connecting bolt 15 is placed (placed) on a concrete slab 28 (concrete frame) constructed on the upper flange 24 of steel and inserted into the steel sleeve 14 installed in the through hole 29 of the concrete slab 28. The first connecting plate 13 and the first additional member 16 (existing steel beam 11) are connected by the second connecting bolt 22, and the second connecting member 21 (existing steel beam 11) and the second connecting plate 20 are connected by the second connecting bolt 22. So, new establishment Since the first bone stud 12 is connected to the existing steel beam 11 and the new steel second stud 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 15 is inserted is drilled in the concrete slab 28, While installing the steel sleeve 14 in the through-hole 29, filling the through-hole 29 with the filler 61, and connecting the upper flange 24 of the existing steel beam 11 and the first connecting plate 13 with the first connecting bolt 15, It is only necessary to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20 by the second connecting bolt 22, so that it is not necessary to carry out the lifting work, and it is possible to prevent the generation of hanging noise, hanging vibration and generation of a large amount of dust. It is possible to attach the new steel first stud 12 to the existing steel beam 11 of the existing building while maintaining a quiet and clean environment, and to install the new iron in the existing steel beam 11. It can be attached to the second stud 19.

  Since the steel structure 10G can prevent the generation of a hail and vibration, and a large amount of dust, the work can be performed during the daytime on weekdays, and the daytime time on weekdays can be used effectively. The new steel frame first stud 12 (H steel bar 31) can be attached to the existing steel beam 11 (H-shaped steel 23) of the existing building efficiently in time, and the new steel second stud 19 (H A section steel 46) can be attached. Since the steel structure 10G does not need to hang concrete, it can save time and labor for carrying out restoration work on the hanger, and also reduce the proof stress of the concrete slab 28 (concrete frame) and the concrete slab 28. While preventing deformation, the new steel first inter-column 12 (H-shaped steel 31) can be efficiently attached in a short time to the existing steel beam 11 (H-shaped steel 23) of the existing building, and the new steel frame is attached to the existing steel beam 11 The second stud 19 (H-section steel 46) can be efficiently attached in a short time.

  The steel structure 10G uses the first connection bolt 15 inserted through the steel sleeve 14 (through hole 29) to connect the new steel first inter-column 12 to the existing steel beam 11, and uses the second connection bolt 22. Because the new steel frame second stud 19 is connected to the existing steel beam 11, welding work is not required, and it is possible to prevent the deterioration of the strength of the steel member and the deformation of the steel member due to the heat of welding. There is no danger, and the new steel frame first stud 12 (H-section steel 31) is safely installed on the existing steel beam 11 (H-section steel 23) of all existing buildings such as high-rise buildings, high-rise buildings, middle-rise buildings, low-rise buildings, and factories. The new steel frame second stud 19 (H-shaped steel 46) can be safely attached to the existing steel beam 11.

  In the steel structure 10G, the connecting member 67 (leg portion 68) inserted into the insertion hole 30 and the filler 18 hardened in the insertion hole 30 are made of the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud 12 ( Since the shear resistance and transmission means against the shear stress generated at the joint with the H-shaped steel 31) is formed, an external force such as an earthquake acts on the existing building, and the existing steel beam 11 and the new steel frame first stud When a shearing stress is generated at the joint with 12, a shear resistance / transmission means formed of the connecting member 67 (leg portion 68) inserted into the insertion hole 30 and the filler 18 cured in the insertion hole 30 is provided. While resisting the shear stress, the shear stress can be smoothly transmitted between the concrete slab 28 (concrete frame) and the new steel frame first inter-column 12.

  In the steel structure 10G, the first connecting bolt 15 inserted into the through hole 29, the steel sleeve 14 installed in the through hole 29, and the filler 61 hardened in the through hole 29 are provided with the existing steel beam 11 (H-shaped steel 23). ) And the new steel frame first stud 12 (H-section steel 31), bending resistance and transmission means that resist bending stress (tensile stress and compressive stress) generated at the joint are formed. When a bending stress is generated at the joint between the existing steel beam 11 and the new steel first stud 12, the first connecting bolt 15 inserted through the through hole 29 and the through hole 29 are installed. The existing steel beam 11 and the concrete slab 28 (concrete frame) and the new steel frame are resisted against the bending stress by the bending resistance / transmission means formed from the steel sleeve 14 and the filler 61 hardened in the through hole 29. It is possible to perform a smooth transfer of bending stresses between the 1 studs 12.

  In the steel structure 10G, shear resistance / transmission means is formed along the web 34 of the H-shaped steel 31 of the new steel first intermediate column 12, and in the vicinity of one flange 32 of the H-shaped steel 31 of the new steel first intermediate column 12. Since the bending resistance / transmission means is formed in the vicinity of the flange 33 and the other flange 33, an external force such as an earthquake acts on the existing building and shears at the joint between the existing steel beam 11 and the new steel first intermediate post 12. When stress or bending stress is generated, the shear resistance / transmission means formed along the web 34 of the first H-section steel 31 forming the new steel frame first stud 12 and the new steel frame first stud 12 are formed. While the bending resistance / transmission means formed in the vicinity of one flange 32 and the vicinity of the other flange 33 of the first H-section steel 31 sufficiently resists shear stress and bending stress, the existing steel beam 11 (H Shaped steel 23) and concrete slurry 28 can be performed smoothly transfer the shear stress and bending stress between the (concrete skeleton) and the new steel first stud 12 (H-section steel 31).

  FIG. 22 is a front view of a steel structure 10H shown as another example. In FIG. 22, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. This steel structure 10H differs from that of FIG. 1 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72, and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10A of FIG. 1, the same reference numerals as those of the steel structure 10A are attached, and the description of the steel structure 10A is cited. Thus, detailed description of the structure of the steel structure 10H will be omitted.

  The steel structure 10H includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 72, and a plurality of first connection bolts 72. The first extension member 16, a plurality of insertion bolts 17 and a filler 18, a new steel frame second stud 19 and a second connection plate 20, a plurality of second extension members 21 and a plurality of second connection bolts 22. And is formed from. The first connecting bolt 72 that forms the steel structure 10H is inserted into the steel sleeve 14 (through hole 29) and is directed from the first connecting plate 13 toward the upper flange 24 of the H-shaped steel 23 that forms the existing steel beam 11. While extending in the vertical direction, it extends in the vertical direction toward the lower flange 25 of the H-section steel 23 forming the existing steel beam 11.

  The first connection bolt 72 is inserted into the bolt hole 27 of the second connection plate 20, the bolt hole 27 of the lower flange 25 of the existing steel beam 11, and the bolt hole 27 of the connection plate portion 54 of the second extension member 21. 1 is inserted into the bolt hole 27 of the connection plate portion 42 of the additional member 16 and the bolt hole 27 of the upper flange 24 of the existing steel beam 11 and is inserted into the steel sleeve 14 (through hole 29). Furthermore, by being inserted or screwed into the bolt hole 27 of the first connecting plate 13 and being fixed to the first connecting plate 13 and the second connecting plate 20 by a nut 40 (fixing means) screwed to the screw portion 39. The first connecting plate 13 and the first additional member 16 are connected, and the second connecting plate 20 and the second additional member 21 are connected.

  In the steel structure 10H, the first connecting bolt 72 and the steel sleeve 14 are subjected to bending stress (tensile) generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel first inter-column 12 (H-shaped steel 31). Bending resistance / transmission means that resists stress and compressive stress). In the steel structure 10H, the insertion bolt 17 and the filler 18 hardened in the insertion hole 30 are generated at the joint portion between the existing steel beam 11 (H-section steel 23) and the new steel structure first stud 12 (H-section steel 31). Shear resistance and transmission means against shear stress are formed.

  FIG. 23 is a front view showing an example of a connecting step for constructing the steel structure 10H of FIG. Note that the connection process for constructing the steel structure 10H in FIG. 22 is the same as the connection process for constructing the steel structure 10A in FIG. 1 (see FIG. 7). In the connecting step, the first connecting plate 13 and the first additional member 16 (the existing steel beam 11) are connected by the first connecting bolts 72, and the second connecting plate 20 and the second additional member 21 (the existing steel beam 11 are connected). ) And the lower end of the H-section steel 31 (first H-section steel) forming the new steel-frame first stud 12 is made of the H-section steel 23 (second H-section steel) forming the existing steel beam 11 The upper end of the H-section steel 46 (third H-section steel) that is connected to the upper flange 24 and forms the new steel frame second stud 19 is connected to the lower flange 25 of the existing steel beam 11, and bending resistance / transmission means is provided. Form.

  In the connecting step, as shown in FIG. 23 (a), a through hole 29 is drilled by a drill bit 57 of an electric drill driver at a predetermined position of a concrete slab 28 constructed at a place where the new steel frame first stud 12 is installed. Then, bolt holes 27 are drilled in the upper flange 24 and the lower flange 25 of the existing steel beam 11. Next, as shown in FIG. 23 (b), the core around the through hole 29 of the concrete slab 28 drilled by the drill bit 57 is cored using a core drill 58, and the concrete slab 28 has a circular cross section. Hole 29 is drilled.

  After the through hole 29 is drilled in the concrete slab 28 by the core drill 58, the steel sleeve 14 is installed (inserted) in the through hole 29 as shown in FIG. The steel sleeve 14 is installed such that its lower end contacts the upper flange 24 of the existing steel beam 11 and its upper end contacts the lower surface of the first connecting plate 13. When a gap is generated between the upper end of the steel sleeve 14 and the lower surface of the first connecting plate 13, the gap is filled by the method described above. The first extension member 16 and the second extension member 21 are fixed to the web 26 of the H-section steel 23 that forms the existing steel beam 11.

  After inserting and installing the steel sleeve 14 in the through hole 29, the first connecting plate 13 is disposed on the concrete slab 28 at the installation location of the new steel frame first stud 12. Next, as shown in (d) of FIG. 23, the second connecting plate 13 is placed (placed) on the concrete slab 28 and the head of the first connecting bolt 72 is turned down, and the second The first connecting bolt is connected to the bolt hole 27 drilled in the connecting plate 20, the bolt hole 27 drilled in the lower flange 25 of the existing steel beam 11, and the bolt hole 27 drilled in the connecting plate portion 54 of the second extension member 21. 72 is inserted into the bolt hole 27 drilled in the connection plate portion 42 of the first extension member 16, the bolt hole 27 of the upper flange 24 of the existing steel beam 11, and the steel sleeve 14 (through hole 29). 72 is inserted. In some cases, the first connecting bolt 72 may be inserted downward from above.

  After the first connecting bolt 72 is inserted through the steel sleeve 14 (through hole 29), the screw 39 of the first connecting bolt 72 is perforated in the first connecting plate 13 as shown in FIG. Inserted or screwed into the hole 27 and exposed to the screw portion 39 of the first connecting bolt 72 exposed above the first connecting plate 13 and the screw portion 39 of the first connecting bolt 72 exposed below the first additional member 16. While screwing the nut 40 (fixing means), the screw portion 39 of the first connecting bolt 72 exposed above the second additional member 21 and the screw portion of the first connecting bolt 72 exposed below the second connecting plate 20. A nut 40 (fixing means) is screwed to 39.

  By screwing the nut 40 to each screw portion 39 of the first connecting bolt 72, the first connecting plate 13 and the first additional member 16 are connected, and the second additional member 21 and the second connecting plate 20 are connected. Then, the new steel frame first stud 12 and the new steel frame second stud 19 are connected to the existing steel beam 11. A space between the first connecting plate 13 and the surface of the concrete slab 28 is filled with a filler 38. The parallel state of the first connecting plate 13 with respect to the upper flange 24 (surface of the concrete slab 28) of the existing steel beam 11 is adjusted by the filler 38.

  The steel structure 10H drills a through hole 29 in a concrete slab 28 (concrete frame) constructed on an upper flange 24 of an H-section steel 23 (second H-section steel) that forms an existing steel beam 11. The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting plate 13 is arranged on a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the first connecting plate 13 by a first connecting bolt 72 inserted into a steel sleeve 14 installed in a through hole 29 of the concrete slab 28. And the first additional member 16 (existing steel beam 11) and the second additional member 21 (existing steel beam 11) and the second connecting plate 20 are connected by the first connecting bolt 72, so that the new steel frame is connected. First Since the inter-column 12 is connected to the existing steel beam 11 and the new steel-frame second inter-column 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 72 is inserted is drilled in the concrete slab 28. 29, the steel sleeve 14 is installed, the upper flange 24 of the existing steel beam 11 and the first connection plate 13 are connected by the first connection bolt 72, and the lower flange 25 and the second connection plate 20 of the existing steel beam 11 are connected. Since it only needs to be connected and there is no need to carry out suspension work, it is possible to prevent the generation of suspension noise, suspension vibration and the generation of large amounts of dust, and the existing steel frame of the existing building can be maintained in a quiet and clean environment. The new steel frame first stud 12 can be attached to the beam 11, and the new steel frame second stud 19 can be attached to the existing steel beam 11.

  In the steel structure 10H, the first steel stud 12 is connected to the existing steel beam 11 using the first connecting bolt 72 inserted through the steel sleeve 14 (through hole 29), and the new steel second stud 19 is provided. Since it is connected to the steel beam 11, it does not require welding work, it can prevent the steel member's yield strength from being lowered and the deformation of the steel member due to the heat of welding, and there is no risk of fire occurrence. New steel frame first stud 12 (H-shaped steel 31) can be safely attached to existing steel beam 11 (H-shaped steel 23) of all existing structures such as buildings, middle-rise buildings, low-rise buildings, factories, etc. 11 can safely attach the new steel frame second stud 19 (H-section steel 46). The other effects of the steel structure 10H are the same as the effects of the steel structure 10A in FIG.

  FIG. 24 is a front view of a steel structure 10I shown as another example. In FIG. 24, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. The steel structure 10I is different from that of FIG. 8 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72 and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10B of FIG. 8, the same reference numerals as those of the steel structure 10B are attached, and the description of the steel structure 10B is used. Thus, detailed description of the structure of the steel structure 10I is omitted.

  The steel structure 10I includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 72, and a plurality of first connection bolts 72. First extension member 16, a plurality of insertion bolts 17 and fillers 18, 61, a new steel frame second stud 19 and a second connection plate 20, a plurality of second extension members 21 and a plurality of second connections. The bolt 22 is formed. The first connecting bolt 72 that forms the steel structure 10I is inserted into the steel sleeve 14 (through hole 29) and is directed from the first connecting plate 13 toward the upper flange 24 of the H-shaped steel 23 that forms the existing steel beam 11. It extends in the vertical direction and extends in the vertical direction toward the lower flange 25 of the H-section steel 23 that forms the existing steel beam 11.

  The first connection bolt 72 is inserted into the bolt hole 27 of the second connection plate 20, the bolt hole 27 of the lower flange 25 of the existing steel beam 11, and the bolt hole 27 of the connection plate portion 20 of the second extension member 21. 1 is inserted into the bolt hole 27 of the connection plate portion 42 of the additional member 16 and the bolt hole 27 of the upper flange 24 of the existing steel beam 11 and is inserted into the steel sleeve 14 (through hole 29). Furthermore, by being inserted or screwed into the bolt hole 27 of the first connecting plate 13 and being fixed to the first connecting plate 13 and the second connecting plate 54 by a nut 40 (fixing means) screwed to the screw portion 39. The first connecting plate 13 and the first additional member 16 are connected, and the second connecting plate 20 and the second additional member 21 are connected.

  The filler 61 forming the steel structure 10 </ b> I is filled in the through hole 29 drilled in the concrete slab 28 and hardened in the through hole 29. In the steel structure 10I, the gap between the through hole 29 and the outer peripheral surface of the steel sleeve 14 is filled with the filler 61, and the gap between the first connecting bolt 72 and the inner peripheral surface of the steel sleeve 14 is filled with the filler 61. Is buried by. In the through hole 29, the filler 61 is hardened, and the first connecting bolt 72, the steel sleeve 14, and the hardened filler 61 are integrated.

  FIG. 25 is a front view showing an example of a connecting step for constructing the steel structure 10I of FIG. In addition, the connection process for constructing the steel structure 10I of FIG. 24 is the same as those processes for constructing the steel structure 10A of FIG. 1 (see FIG. 7). In the connecting step, as shown in FIG. 25 (a), a through-hole 29 is drilled by a drill bit 57 of an electric drill driver at a predetermined position of a concrete slab 28 constructed at a place where the new steel frame first stud 12 is installed. Then, bolt holes 27 are drilled in the upper flange 24 and the lower flange 25 of the existing steel beam 11. Next, as shown in FIG. 25 (b), the core is drilled around the through-hole 29 of the concrete slab 28 drilled by the drill bit 57 using the core drill 58, and the concrete slab 28 has a circular cross section. Hole 29 is drilled.

  After the through-hole 29 is drilled in the concrete slab 28 with the core drill 58, the steel sleeve 14 is installed (inserted) in the through-hole 29 as shown in FIG. The steel sleeve 14 is installed such that its lower end contacts the upper flange 24 of the existing steel beam 11 and its upper end contacts the lower surface of the first connecting plate 13. When a gap is generated between the upper end of the steel sleeve 14 and the lower surface of the first connecting plate 13, the gap is filled by the method described above. The first extension member 16 and the second extension member 21 are fixed to the web 26 of the H-section steel 23 that forms the existing steel beam 11.

  After inserting and installing the steel sleeve 14 in the through-hole 29, as shown in FIG. 25 (d), the through-hole 29 is filled with a filler 61, and the outer periphery of the through-hole 29 and the steel sleeve 14 is filled with the filler 61. The gap between the first connecting bolt 72 and the inner peripheral surface of the steel sleeve 14 is filled while filling the gap with the surface. After filling the through hole 29 with the filler 61, as shown in FIG. 25 (e), the first connecting plate 13 is placed (placed) on the concrete slab 28, and the head of the first connecting bolt 72 is placed. In the state in which the second connecting plate 20 is drilled, the bolt hole 27 drilled in the second connecting plate 20, the bolt hole 27 drilled in the lower flange 25 of the existing steel beam 11, and the connecting plate portion 54 of the second extension member 21 are drilled. The first connecting bolt 72 is inserted into the bolt hole 27, the bolt hole 27 drilled in the connection plate portion 42 of the first additional member 16, the bolt hole 27 of the upper flange 24 of the existing steel beam 11, and the steel material sleeve 14 (through) The first connecting bolt 72 is inserted through the hole 29).

  After the first connecting bolt 72 is inserted into the steel sleeve 14 (through hole 29), the screw 39 of the first connecting bolt 72 is perforated in the first connecting plate 13 as shown in FIG. Inserted or screwed into the hole 27 and exposed to the screw portion 39 of the first connecting bolt 72 exposed above the first connecting plate 13 and the screw portion 39 of the first connecting bolt 72 exposed below the first additional member 16. While screwing the nut 40 (fixing means), the screw portion 39 of the first connecting bolt 72 exposed above the second additional member 21 and the screw portion of the first connecting bolt 72 exposed below the second connecting plate 20. A nut 40 (fixing means) is screwed to 39.

  By screwing the nut 40 to each screw portion 39 of the first connecting bolt 72, the first connecting plate 13 and the first additional member 16 are connected, and the second additional member 21 and the second connecting plate 20 are connected. Then, the new steel frame first stud 12 and the new steel frame second stud 19 are connected to the existing steel beam 11. A space between the first connecting plate 13 and the surface of the concrete slab 28 is filled with a filler 38. The parallel state of the first connecting plate 13 with respect to the upper flange 24 (surface of the concrete slab 28) of the existing steel beam 11 is adjusted by the filler 38.

  In the steel structure 10I, the first connecting bolt 72, the steel sleeve 14, and the filler 61 are generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate post 12 (H-shaped steel 31). A bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) is formed. In the steel structure 10I, the insertion bolt 17 and the filler 18 hardened in the insertion hole 30 are generated at the joint between the existing steel beam 11 (H-section steel 23) and the new steel-frame first stud 12 (H-section steel 31). Shear resistance and transmission means against shear stress are formed.

  The steel structure 10I drills a through hole 29 in a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the H-section steel 23 (second H-section steel) that forms the existing steel beam 11. The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting plate 13 is arranged on a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the first connecting plate 13 by a first connecting bolt 72 inserted into a steel sleeve 14 installed in a through hole 29 of the concrete slab 28. And the first additional member 16 (existing steel beam 11) and the second additional member 21 (existing steel beam 11) and the second connecting plate 20 are connected by the first connecting bolt 72, so that the new steel frame is connected. First Since the inter-column 12 is connected to the existing steel beam 11 and the new steel-frame second inter-column 19 is connected to the existing steel beam 11, a through hole 29 through which the first connecting bolt 72 is inserted is drilled in the concrete slab 28. 29, the steel sleeve 14 is installed, the filler material 61 is filled in the through hole 29, the upper flange 24 of the existing steel beam 11 and the first connection plate 13 are connected by the first connection bolt 72, and the existing steel beam 11 is connected. It is only necessary to connect the lower flange 25 and the second connecting plate 20, and it is not necessary to carry out a hanger construction. Therefore, it is possible to prevent a hail noise, a hail vibration and a large amount of dust, and a quiet and clean environment. In this state, the new steel first inter-column 12 can be attached to the existing steel beam 11 of the existing building, and the new steel second inter-column 19 is attached to the existing steel beam 11 It is possible.

  In the steel structure 10I, the first steel stud 12 is connected to the existing steel beam 11 using the first connection bolt 72 inserted through the steel sleeve 14 (through hole 29), and the new steel second stud 19 is installed. Since it is connected to the steel beam 11, it does not require welding work, it can prevent the steel member's yield strength from being lowered and the deformation of the steel member due to the heat of welding, and there is no risk of fire occurrence. New steel frame first stud 12 (H-shaped steel 31) can be safely attached to existing steel beam 11 (H-shaped steel 23) of all existing structures such as buildings, middle-rise buildings, low-rise buildings, factories, etc. 11 can safely attach the new steel frame second stud 19 (H-section steel 46). The other effects of the steel structure 10I are the same as the effects of the steel structure 10B in FIG.

  FIG. 26 is a front view of a steel structure 10J shown as another example. In FIG. 26, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. This steel structure 10J differs from that of FIG. 10 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72, and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10C of FIG. 10, the same reference numerals as those of the steel structure 10C are attached, and the description of the steel structure 10C is used. Thus, detailed description of the structure of the steel structure 10J will be omitted.

  The steel structure 10J includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13 and a plurality of first connection bolts 72, a plurality of first extension members 16 and a plurality of The insertion rod 62, the fillers 18 and 61, the new steel frame second stud 19, the second connection plate 20, the plurality of second extension members 21, and the plurality of second connection bolts 22 are formed. The first connection bolt 72 that forms the steel structure 10J is inserted in the through hole 29 and extends vertically from the first connection plate 13 toward the upper flange 24 of the H-shaped steel 23 that forms the existing steel beam 11. And extends in the vertical direction toward the lower flange 25 of the H-shaped steel 23 forming the existing steel beam 11.

  The first connection bolt 72 is inserted into the bolt hole 27 of the second connection plate 20, the bolt hole 27 of the lower flange 25 of the existing steel beam 11, and the bolt hole 27 of the connection plate portion 20 of the second extension member 21. 1 is inserted into the bolt hole 27 of the connection plate portion 42 of the additional member 16 and the bolt hole 27 of the upper flange 24 of the existing steel beam 11 and is inserted into the steel sleeve 14 (through hole 29). Furthermore, by being inserted or screwed into the bolt hole 27 of the first connecting plate 13 and being fixed to the first connecting plate 13 and the second connecting plate 54 by a nut 40 (fixing means) screwed to the screw portion 39. The first connecting plate 13 and the first additional member 16 are connected, and the second connecting plate 20 and the second additional member 21 are connected.

  In the steel structure 10J, the first connecting bolt 72 and the filler 61 are subjected to bending stress (tensile) generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first inter-column 12 (H-shaped steel 31). Bending resistance / transmission means that resists stress and compressive stress). In the steel structure 10J, the insertion rod 62 and the filler 18 hardened in the insertion hole 30 are generated at the joint between the existing steel beam 11 (H-section steel 23) and the new steel-frame first intermediate post 12 (H-section steel 31). Shear resistance and transmission means against shear stress are formed.

  FIG. 27 is a front view showing an example of a connecting step for constructing the steel structure 10J of FIG. In addition, the connection process for constructing the steel structure 10J in FIG. 26 is the same as the connection process for constructing the steel structure 10C in FIG. 10 (see FIG. 12). In the connecting step, the first connecting plate 13 and the first additional member 16 (the existing steel beam 11) are connected by the first connecting bolts 72, and the second connecting plate 20 and the second additional member 21 (the existing steel beam 11) are connected. And the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 above the H-section steel 23 (second H-section steel) forming the existing steel beam 11 The upper end of the H-section steel 46 (third H-section steel) that is connected to the flange 24 and forms the new steel frame second stud 19 is connected to the lower flange 25 of the existing steel beam 11 and a bending resistance / transmission means is formed. To do.

  In the connecting step, as shown in FIG. 27A, a through-hole 29 is drilled at a predetermined position of the concrete slab 28 constructed at the installation location of the new steel frame first stud 12 by a drill bit 57 of an electric drill driver. Then, bolt holes 27 are drilled in the upper flange 24 and the lower flange 25 of the existing steel beam 11. Next, as shown in FIG. 27 (b), with the head of the first connecting bolt 72 facing down, the bolt hole 27 drilled in the second connecting plate 20 and the lower flange 25 of the existing steel beam 11. The first connecting bolt 72 is inserted into the bolt hole 27 drilled in the bolt and the bolt hole 27 drilled in the connection plate portion 54 of the second extension member 21, and the connection plate portion 42 of the first extension member 16 is drilled. The first connecting bolt 72 is inserted into the bolt hole 27 and the bolt hole 27 and the through hole 29 of the upper flange 24 of the existing steel beam 11. The first extension member 16 and the second extension member 21 are fixed to the web 26 of the H-section steel 23 that forms the existing steel beam 11.

  After the first connecting bolt 72 is inserted into the through hole 29, the screw portion 39 of the first connecting bolt 72 is inserted into the bolt hole 27 drilled in the first connecting plate 13, as shown in FIG. The nut 40 (fixing means) is fastened to the screw portion 39 of the first connecting bolt 72 that is screwed and exposed to the upper side of the first connecting plate 13 and the screw portion 39 of the first connecting bolt 72 that is exposed to the lower side of the first additional member 16. ) And the nut 40 on the screw portion 39 of the first connecting bolt 72 exposed above the second extension member 21 and the screw portion 39 of the first connecting bolt 72 exposed below the second connecting plate 20. Screw (fixing means). Next, the filler 61 is filled (injected) into the through hole 29 from the filler filling port 60 of the first connecting plate 13, and the filler 61 forms a gap between the through hole 29 and the outer peripheral surface of the first connecting bolt 72. fill in. In the through hole 29, as shown in FIG. 27D, the first connecting bolt 72 is integrated with the filler 61 cured in the through hole 29.

  By screwing the nut 40 to each screw portion 39 of the first connecting bolt 72, the first connecting plate 13 and the first additional member 16 are connected, and the second additional member 21 and the second connecting plate 20 are connected. Then, the new steel frame first stud 12 and the new steel frame second stud 19 are connected to the existing steel beam 11. A space between the first connecting plate 13 and the surface of the concrete slab 28 is filled with a filler 38. The parallel state of the first connecting plate 13 with respect to the upper flange 24 (surface of the concrete slab 28) of the existing steel beam 11 is adjusted by the filler 38.

  As another example of the connecting step for constructing the steel structure 10J of FIG. 26, after the through hole 29 is drilled at a predetermined position of the concrete slab 28, the through hole 29 is filled with the filler 61. Next, the bolt hole 27 drilled in the second connecting plate 20, the bolt hole 27 drilled in the lower flange 25 of the existing steel beam 11, and the bolt hole 27 drilled in the connection plate portion 54 of the second extension member 21, The first connecting bolt 72 is inserted through the bolt hole 27 drilled in the connecting plate portion 42 of the first additional member 16, the bolt hole 27 of the upper flange 24 of the existing steel beam 11, and the through hole 29. 72 is inserted.

  Further, the screw portion 39 of the first connecting bolt 72 is inserted or screwed into the bolt hole 27 drilled in the first connecting plate 13 and exposed to the upper side of the first connecting plate 13. The nut 40 (fixing means) is screwed onto the screw portion 39 of the first connecting bolt 72 exposed to the lower side of the first additional member 16 and the first connecting bolt 72 exposed to the upper side of the second additional member 21. A nut 40 (fixing means) is screwed onto the screw portion 39 and the screw portion 39 of the first connecting bolt 72 exposed below the second connecting plate 20. In this case, the filler filling port 60 is not made in the first connecting plate 13.

  The steel structure 10J drills a through hole 29 in a concrete slab 28 (concrete frame) constructed on the upper flange 24 of the H-section steel 23 (second H-section steel) that forms the existing steel beam 11. The first connecting plate 13 attached to the lower end of the H-section steel 31 (first H-section steel) forming the new steel frame first stud 12 is the H-section steel 23 (second H-section steel) of the existing steel beam 11. The first connecting plate 13 and the first extension are provided by a first connecting bolt 72 which is disposed on a concrete slab 28 (concrete frame) constructed on the upper flange 24 and is inserted into a through hole 29 drilled in the concrete slab 28. While connecting the member 16 (existing steel beam 11) and connecting the second additional member 21 (existing steel beam 11) and the second connecting plate 20 by the first connecting bolt 72, the new steel frame first stud 12 is connected. Is the existing iron Since the new steel frame second stud 19 is connected to the existing steel beam 11 by being connected to the beam 11, a through hole 29 through which the first connection bolt 72 is inserted is drilled in the concrete slab 28, and the through hole 29 is filled with filler. 61, the upper flange 24 of the existing steel beam 11 and the first connection plate 13 are connected by the first connection bolt 72, and the lower flange 25 of the existing steel beam 11 and the second connection plate 20 are connected. Since there is no need to carry out suspension work, it is possible to prevent the generation of suspension noise and suspension vibration and the generation of a large amount of dust, and it is newly installed in the existing steel beam 11 of the existing building while maintaining a quiet and clean environment. The steel frame first stud 12 can be attached, and the new steel frame second stud 19 can be attached to the existing steel beam 11.

  In the steel structure 10 </ b> J, the new steel frame first stud 12 is connected to the existing steel beam 11 using the first connecting bolt 72 inserted through the through hole 29, and the new steel frame second stud 19 is connected to the existing steel beam 11. Therefore, it does not require welding work, can prevent the deterioration of the strength of the steel member due to the heat of welding and the deformation of the steel member, there is no risk of fire occurrence, high-rise buildings, high-rise buildings, middle-rise buildings, The new steel frame first pillar 12 (H-shaped steel 31) can be safely attached to the existing steel beam 11 (H-shaped steel 23) of all existing buildings such as low-rise buildings and factories. The two studs 19 (H-section steel 46) can be safely attached. The other effects of the steel structure 10J are the same as the effects of the steel structure 10C of FIG.

  FIG. 28 is a front view of a steel structure 10K shown as another example. In FIG. 28, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. This steel structure 10K differs from that of FIG. 13 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72 and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10D of FIG. 13, the same reference numerals as those of the steel structure 10D are attached, and the description of the steel structure 10D is used. Thus, detailed description of the structure of the steel structure 10K will be omitted.

  The steel frame structure 10K includes an existing steel beam 11 and a new steel frame first stud 12 of an existing building, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 72, and a plurality of first connection bolts 72. The first extension member 16, the filler 61 and the plurality of metal pillars 63, the new steel frame second interphase pillar 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection bolts 22. And is formed from. The connection step for constructing the steel structure 10K in FIG. 28 is the same as the connection step for constructing the steel structure 10I in FIG. 24 (see FIG. 25), and the steel structure 10K in FIG. The connection process for constructing is the same as the connection process for constructing the steel structure 10D of FIG. 13 (see FIG. 14).

  In the steel structure 10K, the first connecting bolt 72, the steel material sleeve 14, and the filler 61 are generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel structure first intermediate post 12 (H-shaped steel 31). A bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) is formed, and a metal column 63 is formed between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column 12 (H-shaped steel 31). Shear resistance / transmission means against the shear stress generated in the joint is formed.

  The steel structure 10K has a through-hole 29 through which the first connecting bolt 72 is inserted in the concrete slab 28, the steel sleeve 14 is installed in the through-hole 29, and the through-hole 29 is filled with a filler 61. It is only necessary to connect the upper flange 24 of the existing steel beam 11 and the first connecting plate 13 by the one connecting bolt 72 and to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20, and it is necessary to carry out the suspension work. Therefore, it is possible to prevent the generation of hanging noise and hanging vibration and the generation of a large amount of dust, and the new steel frame first stud 12 is attached to the existing steel beam 11 of the existing building while maintaining a quiet and clean environment. While being able to attach, the new steel frame 2nd stud 19 can be attached to the existing steel beam 11. FIG.

  In the steel structure 10K, the first steel studs 12 are connected to the existing steel beams 11 using the first connecting bolts 72 inserted through the steel sleeve 14 (through holes 29), and the new steel second steel pillars 19 are installed. Since it is connected to the steel beam 11, it does not require welding work, it can prevent the steel member's yield strength from being lowered and the deformation of the steel member due to the heat of welding, and there is no risk of fire occurrence. The new steel first stud 12 can be safely attached to the existing steel beam 11 of any existing building such as a building, a mid-rise building, a low-rise building, and a factory, and the new steel second stud 19 can be safely attached to the existing steel beam 11 be able to. The other effects of the steel structure 10K are the same as the effects of the steel structure 10D of FIG.

  FIG. 29 is a front view of a steel structure 10L shown as another example. In FIG. 29, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. 15 is different from that of FIG. 15 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72 and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10E of FIG. 15, the same reference numerals as those of the steel structure 10E are attached, and the description of the steel structure 10E is used. Thus, a detailed description of the structure of the steel structure 10L is omitted.

  The steel structure 10L includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 72, and a plurality of first connection bolts 72. The first extension member 16, the fillers 18, 61 and the plurality of metal pillars 63, the new steel frame second intermediate pillar 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection parts. The bolt 22 is formed. Note that the connecting step for constructing the steel structure 10L of FIG. 29 is the same as the connecting step for constructing the steel structure 10I of FIG. 24 (see FIG. 25), and the steel structure 10L of FIG. The connection process for constructing is the same as the connection process for constructing the steel structure 10E of FIG. 15 (see FIG. 16).

  In the steel structure 10L, the first connection bolt 72, the steel sleeve 14, and the filler 61 are generated at the joint between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate post 12 (H-shaped steel 31). A bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) is formed, and the metal column 63 and the filler 18 include the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column 12 (H-shaped). Shear resistance and transmission means are formed against the shear stress generated at the joint with the steel 31).

  The steel structure 10L has a through-hole 29 through which the first connecting bolt 72 is inserted in the concrete slab 28. The steel sleeve 14 is installed in the through-hole 29 and the through-hole 29 is filled with a filler 61. It is only necessary to connect the upper flange 24 of the existing steel beam 11 and the first connecting plate 13 by the one connecting bolt 72 and to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20, and it is necessary to carry out the suspension work. Therefore, it is possible to prevent the generation of hanging noise and hanging vibration and the generation of a large amount of dust, and the new steel frame first stud 12 is attached to the existing steel beam 11 of the existing building while maintaining a quiet and clean environment. While being able to attach, the new steel frame 2nd stud 19 can be attached to the existing steel beam 11. FIG.

  In the steel structure 10L, the first steel stud 12 is connected to the existing steel beam 11 using the first connecting bolt 72 inserted through the steel sleeve 14 (through hole 29), and the new steel second stud 19 is installed. Since it is connected to the steel beam 11, it does not require welding work, it can prevent the steel member's yield strength from being lowered and the deformation of the steel member due to the heat of welding, and there is no risk of fire occurrence. The new steel first stud 12 can be safely attached to the existing steel beam 11 of any existing building such as a building, a mid-rise building, a low-rise building, and a factory, and the new steel second stud 19 can be safely attached to the existing steel beam 11 be able to. The other effects of the steel structure 10L are the same as the effects of the steel structure 10E in FIG.

  FIG. 30 is a front view of a steel structure 10M shown as another example. In FIG. 30, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. This steel structure 10M differs from that of FIG. 17 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72 and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10F in FIG. 17, the same reference numerals as those of the steel structure 10F are attached and the description of the steel structure 10F is used. Thus, detailed description of the structure of the steel structure 10M will be omitted.

  The steel frame structure 10M includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 72, and a plurality of first connection bolts 72. The first extension member 16, the fillers 18, 61 and the plurality of metal pillars 63, the pressing plate 66, the new steel frame second intermediate pillar 19 and the second connecting plate 20, the plurality of second extension members 21 and the plurality The second connection bolts 22 are formed. Note that the connecting step for constructing the steel structure 10M in FIG. 30 is the same as the connecting step for constructing the steel structure 10I in FIG. 24 (see FIG. 25), and the steel structure 10M in FIG. The connection process for constructing is the same as the connection process for constructing the steel structure 10F of FIG. 17 (see FIG. 18).

  In the steel structure 10M, the first connecting bolt 72, the steel material sleeve 14, and the filler 61 are generated at the joint portion between the existing steel beam 11 (H-shaped steel 23) and the new steel structure first stud 12 (H-shaped steel 31). A bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) is formed, and the metal column 63, the filler 18, and the pressing plate 66 include the existing steel beam 11 (H-shaped steel 23) and the new steel frame first intermediate column. 12 (H-shaped steel 31) is formed with shear resistance / transmission means that resists shear stress generated at the joint.

  The steel structure 10M has a through-hole 29 through which the first connecting bolt 72 is inserted in the concrete slab 28. The steel sleeve 14 is installed in the through-hole 29 and the through-hole 29 is filled with a filler 61. It is only necessary to connect the upper flange 24 of the existing steel beam 11 and the first connecting plate 13 by the one connecting bolt 72 and to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20, and it is necessary to carry out the suspension work. Therefore, it is possible to prevent the generation of hanging noise and hanging vibration and the generation of a large amount of dust, and the new steel frame first stud 12 is attached to the existing steel beam 11 of the existing building while maintaining a quiet and clean environment. While being able to attach, the new steel frame 2nd stud 19 can be attached to the existing steel beam 11. FIG.

  In the steel structure 10M, the new steel first first pillar 12 is connected to the existing steel beam 11 using the first connection bolt 72 inserted through the steel sleeve 14 (through hole 29), and the new steel second stud 19 is provided. Since it is connected to the steel beam 11, it does not require welding work, it can prevent the steel member's yield strength from being lowered and the deformation of the steel member due to the heat of welding, and there is no risk of fire occurrence. The new steel first stud 12 can be safely attached to the existing steel beam 11 of any existing building such as a building, a mid-rise building, a low-rise building, and a factory, and the new steel second stud 19 can be safely attached to the existing steel beam 11 be able to. The other effects of the steel structure 10M are the same as the effects of the steel structure 10F in FIG.

  FIG. 31 is a front view of a steel structure 10N shown as another example. In FIG. 31, the vertical direction is indicated by an arrow A, and the horizontal direction is indicated by an arrow B. This steel structure 10N is different from that of FIG. 19 in that the first connecting plate 13 and the first additional member 16 are connected by the first connecting bolt 72 and the second connecting plate 20 and the second additional member 21 are connected. Since the other structures are the same as those of the steel structure 10G of FIG. 19, the same reference numerals as those of the steel structure 10G are attached, and the description of the steel structure 10G is used. Thus, detailed description of the structure of the steel structure 10N will be omitted.

  The steel structure 10N includes an existing steel beam 11 and a new steel frame first stud 12 of an existing structure, a first connection plate 13, a plurality of steel sleeves 14 (tube materials), a plurality of first connection bolts 72, and a plurality of first connection bolts 72. The first extension member 16, the plurality of connection members 67 and fillers 18, 61, the new steel frame second stud 19 and the second connection plate 20, the plurality of second extension members 21 and the plurality of second connection bolts. 22. The connection step for constructing the steel structure 10N in FIG. 31 is the same as the connection step for constructing the steel structure 10I in FIG. 24 (see FIG. 25), and the steel structure 10N in FIG. The connection process for constructing is the same as the connection process for constructing the steel structure 10G of FIG. 19 (see FIG. 21).

  In the steel structure 10N, the first connecting bolt 72, the steel sleeve 14, and the filler 61 are generated at the joint portion between the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud 12 (H-shaped steel 31). A bending resistance / transmission means that resists bending stress (tensile stress and compressive stress) is formed, and the connecting member 67 and the filler 18 include the existing steel beam 11 (H-shaped steel 23) and the new steel frame first stud 12 (H-shaped). Shear resistance and transmission means are formed against the shear stress generated at the joint with the steel 31).

  In the steel structure 10N, a through hole 29 through which the first connecting bolt 72 is inserted is drilled in the concrete slab 28. The steel sleeve 14 is installed in the through hole 29, and the through hole 29 is filled with a filler 61. It is only necessary to connect the upper flange 24 of the existing steel beam 11 and the first connecting plate 13 by the one connecting bolt 72 and to connect the lower flange 25 of the existing steel beam 11 and the second connecting plate 20, and it is necessary to carry out the suspension work. Therefore, it is possible to prevent the generation of hanging noise and hanging vibration and the generation of a large amount of dust, and the new steel frame first stud 12 is attached to the existing steel beam 11 of the existing building while maintaining a quiet and clean environment. While being able to attach, the new steel frame 2nd stud 19 can be attached to the existing steel beam 11. FIG.

  In the steel structure 10N, the first steel studs 12 are connected to the existing steel beams 11 using the first connecting bolts 72 inserted into the steel sleeve 14 (through holes 29), and the new steel frame second studs 19 are installed. Since it is connected to the steel beam 11, it does not require welding work, it can prevent the steel member's yield strength from being lowered and the deformation of the steel member due to the heat of welding, and there is no risk of fire occurrence. The new steel first stud 12 can be safely attached to the existing steel beam 11 of any existing building such as a building, a mid-rise building, a low-rise building, and a factory, and the new steel second stud 19 can be safely attached to the existing steel beam 11 be able to. The other effects of the steel structure 10N are the same as the effects of the steel structure 10G in FIG.

  FIG. 32 is a top view of a new steel frame first stud 12 shown as another example. 32 is an example in which the metal pillar 63 is installed in the vicinity of the end edge (near the outer periphery) of the first connecting plate 13. The metal column 63 is not necessarily installed in the first connecting plate 13 (inside the outer peripheral edge of the first connecting plate 13), and the metal column 63 is partially supported by the first connecting plate 13. Therefore, as shown in FIG. 32, the metal pillar 63 is installed in the vicinity of the edge of the first connecting plate 13, and a part of the metal pillar 63 is the end of the first connecting plate 13. It may protrude from the edge. 32, the shear resistance / transmission means may be formed by the insertion bolts 17, the insertion rods 62, and the connection members 67 in the first steel frame first stud 12 shown in FIG.

  FIG. 33 is a top view of a new steel frame first stud 12 shown as another example. The new steel frame first stud 12 shown in FIG. 33 is disposed along the web 34 of the H-section steel 31 in which the insertion bolt 17 is the central part of the new steel frame first stud 12 and forms the new steel frame first stud 12. The shear resistance / transmission means is not only formed along the web 34 of the H-section steel 31 that forms the new steel frame first stud 12, but the insertion bolt 17 is laterally outward of the first connection bolt 72. It is arrange | positioned at the both sides of the new steel frame 1st pillar 12, and a shear resistance and a transmission means are formed in the both sides of the new steel frame 1st pillar 12 in the lateral direction outward of a bending resistance and a transmission means. It should be noted that the insertion bolts 17 are disposed laterally outward of the first connecting bolts 72 and only on both sides of the new steel frame first stud 12 and the shear resistance / transmission means is on both sides of the new steel frame first stud 12. Even if the bending resistance / transmission means is laterally outward and formed only on both sides of the first steel frame first stud 12, the shear resistance / transmission means is not formed at the center of the new steel frame first stud 12. Good. 33, the shearing resistance / transmission means may be formed by the insertion rod 62, the metal column 63, and the connecting member 67.

  FIG. 34 is a perspective view of a steel sleeve 14 shown as another example. In the steel sleeve 14 shown in FIG. 34, a flange 74 having a predetermined thickness is formed on the top 73 of the cylindrical steel sleeve 14 and extends radially outward. The flange 74 may be in contact with the lower surface of the first connection plate 13 or may not be in contact with the lower surface of the first connection plate 13. When the flange 74 is in contact with the lower surface of the first connecting plate 13, an external force such as an earthquake acts on the existing building, and bending stress is generated at the joint between the existing steel beam 11 and the new steel first inter-column 12. Further, since the compressive stress is transmitted from the first connecting plate 13 to the flange 74 and the compressive stress is transmitted from the flange 74 to the steel sleeve 14, the compressive stress is transmitted from the first connecting plate 13 to the steel sleeve 14 via the flange 74. The bending stress can be efficiently transmitted between the existing steel beam 11 and the concrete slab 28 (concrete frame) and the new steel frame first inter-column 12.

  In the case where the flange 74 does not contact the lower surface of the first connecting plate 13, an external force such as an earthquake acts on the existing building, and bending stress is generated at the joint between the existing steel beam 11 and the new steel first inter-column 12. At this time, even if the flange 74 is not in contact with the lower surface of the first connecting plate 13, the compressive stress is transmitted from the first connecting plate 13 to the filler 38, and the compressive stress is transmitted from the filler 38 to the flange 74, Since the compressive stress is transmitted from the flange 74 to the steel sleeve 14, the compressive stress is transmitted from the first connecting plate 13 to the steel sleeve 14 via the filler 38 and the flange 74, and the existing steel beam 11 and the concrete slab 28 (concrete) are transmitted. Bending stress can be efficiently transmitted between the frame) and the new steel frame first stud 12.

  In the steel structure 10A of FIG. 1 and the steel structure 10B of FIG. 8, the shear resistance / transmission means shown in FIGS. 10, 13, 15, 17, and 19 can be employed as the shear resistance / transmission means. . In the steel structure 10C of FIG. 10, the shear resistance / transmission means shown in FIGS. 1, 13, 15, 17, and 19 can be adopted as the shear resistance / transmission means. In the steel structure 10H of FIG. 22 and the steel structure 10I of FIG. 24, the shear resistance / transmission means shown in FIGS. 26, 28, 29, 30, and 31 can be employed as the shear resistance / transmission means. . In the steel structure 10J of FIG. 26, the shear resistance / transmission means shown in FIGS. 22, 28, 29, 30, and 31 can be employed.

DESCRIPTION OF SYMBOLS 10A Steel structure 10B Steel structure 10C Steel structure 10D Steel structure 10E Steel structure 10F Steel structure 10G Steel structure 10H Steel structure 10I Steel structure 10J Steel structure 10K Steel structure 10L Steel structure 10L Structure 10N Steel structure 11 Existing steel beam 12 New steel frame first stud 13 First connecting plate 14 Steel sleeve (pipe)
DESCRIPTION OF SYMBOLS 15 1st connection bolt 16 1st expansion member 17 Insertion bolt 18 Filler 19 New steel frame 2nd pillar 20 2nd connection plate 21 2nd expansion member 22 2nd connection bolt 23 H-section steel (2nd H-section steel)
24 Upper flange 25 Lower flange 26 Web 27 Bolt hole 28 Concrete slab (concrete frame)
29 Through-hole 30 Insertion hole 31 H-section steel (first H-section steel)
32 One flange 33 The other flange 34 Web 35 Central part 36 Side part 37 Side part 38 Filler 39 Screw part 40 Nut (fixing means)
41 Mounting plate portion 42 Connection plate portion 43 Reinforcement plate portion 44 Fixing bolt 45 Exposed portion 46 H-section steel (third H-section steel)
47 One flange 48 The other flange 49 Web 50 Central portion 51 Side portion 52 Side portion 53 Mounting plate portion 54 Connection plate portion 55 Reinforcement plate portion 56 Screw portion 57 Drill bit 58 Core removal drill 59 Screw portion 60 Filler filling port 61 Filler 62 Insertion rod 63 Metal pillar 64 Insertion hole 65 Top portion 66 Press plate 67 Connect member 68 Leg portion 69 Plate-like base 70 Connection bolt 71 Screw portion 72 First connection bolt 73 Top portion 74 Flange

Claims (17)

In a steel structure in which a new steel inter-column is connected to an existing steel beam of an existing building,
The new steel inter-column is a new steel first inter-column that extends vertically upward from the existing steel beam, and a new steel second inter-column that is positioned below the first steel inter-column and extends vertically downward from the existing steel beam The steel structure is attached to a lower end of the first steel frame first stud and extends in the horizontal direction, and is attached to an upper end of the new steel frame second stud and extends in the horizontal direction. Two connection plates, and a first connection bolt that is inserted through a through hole drilled in a concrete frame constructed on the existing steel beam and extends in a vertical direction from the first connection plate toward the existing steel beam; A second connection bolt extending vertically from the existing steel beam toward the second connection plate;
In the steel structure, the first connection plate is disposed on a concrete frame constructed on the existing steel beam, and the second connection plate is disposed below the existing steel beam and inserted into the through hole. Further, the first connecting plate and the existing steel beam are connected by the first connecting bolt, whereby the new steel frame first stud is connected to the existing steel beam, and the second connecting bolt is used for the second connection. A steel structure in which the new steel frame second stud is connected to the existing steel beam by connecting a plate and the existing steel beam.   The steel structure includes a first extension member attached to the existing steel beam and a second extension member attached to the existing steel beam, and the steel structure has the first insertion member inserted through the through hole. By connecting the first connecting plate and the first additional member by one connecting bolt, the new steel frame first stud is connected to the existing steel beam, and the second connecting bolt and the second connecting plate are connected to the second connecting plate. The steel structure according to claim 1, wherein the new steel frame second stud is connected to the existing steel beam by being connected to the second extension member.   The new steel frame first stud is a first H-section steel extending in the vertical direction, the existing steel beam is a second H-section steel extending in the horizontal direction, and the new steel frame second stud is in the vertical direction. In the steel structure, the first connecting plate is attached to the lower end of the first H-shaped steel forming the new steel frame first stud, and the second connecting plate is It is attached to the upper end of the third H-shaped steel forming the new steel frame second stud, and the first additional member is attached to the upper flange side of the second H-shaped steel forming the existing steel beam, A second extension member is attached to the lower flange side of the second H-shaped steel forming the existing steel beam, and the first connection plate and the first extension are inserted by the first connection bolt inserted into the through hole. 1st H which forms the said new steel frame 1st pillar by connecting with a member Steel is connected to the upper flange of the second H-shaped steel forming the existing steel beam, and the second connecting plate and the second additional member are connected by the second connecting bolt, whereby the new steel frame The steel structure according to claim 2, wherein a third H-section steel forming a second stud and a lower flange of a second H-section steel forming the existing steel beam are connected. In a steel structure in which a new steel inter-column is connected to an existing steel beam of an existing building,
The new steel inter-column is a new steel first inter-column that extends vertically upward from the existing steel beam, and a new steel second inter-column that is positioned below the first steel inter-column and extends vertically downward from the existing steel beam The steel structure is attached to a lower end of the first steel frame first stud and extends in the horizontal direction, and is attached to an upper end of the new steel frame second stud and extends in the horizontal direction. Two connecting plates, and a first connecting bolt that is inserted through a through hole drilled in a concrete frame constructed on the existing steel beam and extends in a vertical direction from the first connecting plate toward the second connecting plate. Including
In the steel structure, the first connection plate is disposed on a concrete frame constructed on the existing steel beam, and the second connection plate is disposed below the existing steel beam and inserted into the through hole. Further, the first connection plate and the existing steel beam are connected by the first connection bolt, and the existing steel beam and the second connection plate are connected by the first connection bolt. A steel structure, wherein a first steel frame and a second steel frame are connected to the existing steel beam.   The steel structure includes a first extension member attached to the existing steel beam and a second extension member attached to the existing steel beam, and the steel structure has the first insertion member inserted through the through hole. The first connecting plate and the first additional member are connected by one connecting bolt, and the second connecting plate and the second additional member are connected by the first connecting bolt, so that the new steel structure 5. The steel structure according to claim 4, wherein one stud is connected to the existing steel beam, and the second steel second stud is connected to the existing steel beam.   The new steel frame first stud is a first H-section steel extending in the vertical direction, the existing steel beam is a second H-section steel extending in the horizontal direction, and the new steel frame second stud is in the vertical direction. In the steel structure, the first connecting plate is attached to the lower end of the first H-shaped steel forming the new steel frame first stud, and the second connecting plate is It is attached to the upper end of the third H-shaped steel forming the new steel frame second stud, and the first additional member is attached to the upper flange side of the second H-shaped steel forming the existing steel beam, A second extension member is attached to the lower flange side of the second H-shaped steel forming the existing steel beam, and the first connection plate and the first extension are inserted by the first connection bolt inserted into the through hole. The second extension part is connected to the member by the first connection bolt. Are connected to the upper flange of the second H-shaped steel forming the existing steel beam, the first H-shaped steel forming the new steel frame first stud is connected, The steel structure according to claim 5, wherein a third H-section steel forming the new steel frame second stud is connected to a lower flange of the second H-section steel forming the existing steel beam.   The steel structure includes a steel sleeve inserted between a through hole of the concrete frame and extending between the first connection plate and the existing steel beam. In the steel structure, the first connection bolt is the steel material. A bending resistance / transmission means that is inserted through a sleeve and that resists bending stress generated at a joint portion between the existing steel beam and the new steel first stud is formed by the first connecting bolt and the steel sleeve. The steel structure according to any one of claims 1 to 6.   The steel structure includes a filler that is filled in a through hole of the concrete casing inserted through the steel sleeve and hardened in the through hole. In the steel structure, the through hole and an outer peripheral surface of the steel sleeve At least a gap between the connection bolt and the inner peripheral surface of the steel sleeve is filled with the filler, and the first connection bolt And the steel sleeve are integrated with the filler hardened in the through hole, and the first connecting bolt, the steel sleeve, and the filler hardened in the through hole are the existing steel beam and the new steel first stud. The steel structure according to claim 7, wherein a bending resistance / transmission means that resists bending stress generated at a joint with the steel structure is formed.   The steel structure includes a filler that is filled in a through hole of the concrete frame inserted through the first connection bolt and hardened in the through hole. In the steel structure, the through hole and the first connection bolt And the first connecting bolt is integrated with the filler hardened in the through hole, and the first connecting bolt and the filler hardened in the through hole are used as the existing steel beam. The steel structure according to any one of claims 1 to 6, wherein a bending resistance / transmission means that resists a bending stress generated at a joint portion between the first steel pillar and the newly installed steel frame is formed.   An insertion rod attached to the first connecting plate and extending downward from the first connecting plate, and a filler filled in an insertion hole drilled in the concrete frame and hardened in the insertion hole. In the steel structure, the insertion rod is inserted into the insertion hole drilled in the concrete frame, the filler is filled in the insertion hole, and the insertion rod is hardened in the insertion hole. The insertion rod and the filler hardened in the insertion hole form a shear resistance / transmission means that resists the shear stress generated at the joint between the existing steel beam and the new steel first inter-column. The steel structure according to any one of claims 7 to 9.   The steel structure includes an insertion bolt removably screwed or inserted into the first connecting plate and a filler filled in an insertion hole drilled in the concrete housing and cured in the insertion hole, In the steel structure, the exposed portion of the insertion bolt exposed downward from the first connecting plate is inserted into the insertion hole drilled in the concrete frame, and the filler is filled in the insertion hole, An insertion bolt is integrated with the filler hardened in the insertion hole, and the insertion bolt and the filler hardened in the insertion hole are subjected to shear stress generated at a joint portion between the existing steel beam and the first steel frame first stud. The steel structure according to any one of claims 7 to 9, wherein a shearing resistance / transmission means to resist is formed.   The steel structure includes a metal column inserted into an insertion hole drilled in the first connecting plate and an insertion hole drilled in the concrete frame. In the steel structure, the metal column is the first column. Inserted into the insertion hole of the connecting plate and the insertion hole of the concrete frame, the metal column forms a shear resistance / transmission means that resists the shear stress generated at the joint between the existing steel beam and the new steel first inter-column The steel structure according to any one of claims 7 to 9.   The steel structure includes a filler filled in an insertion hole of the first connecting plate into which the metal column is inserted and an insertion hole of the concrete frame and hardened in the insertion hole and the insertion hole, and the steel structure Then, the insertion hole and the insertion hole are filled with the filler, the gap between the insertion hole and the insertion hole and the outer peripheral surface of the metal column is filled with the filler, and the metal column is inserted into the insertion hole and the insertion hole. Shear stress that is integrated with the filler hardened in the insertion hole, and the metal column, the insertion hole, and the filler hardened in the insertion hole are generated at the joint between the existing steel beam and the first steel intermediate pillar The steel structure according to claim 12, wherein shear resistance / transmission means that resists the above is formed.   The steel structure is disposed in the vicinity including the top of the metal column inserted into the insertion hole of the first connecting plate and the insertion hole of the concrete frame, and is fixed to the first connecting plate and fixed to the metal column. In the steel structure, in the steel structure, the metal column and the press plate resist shear stress and transmission that resists shear stress generated at the joint between the existing steel beam and the new steel first inter-column. The steel structure according to claim 12 or 13, which forms a means.   The steel structure is detachably attached to the first connecting plate and connects the first connecting plate to the concrete case, and the insertion hole is formed in the insertion hole formed in the concrete case. The connecting member is attached to and detached from the leg portion embedded in the insertion hole of the concrete frame, the plate base connected to the leg portion, the first connecting plate, and the plate base. The steel structure is formed by connecting bolts that can be screwed together to connect the plate-like base and the first connecting plate. In the steel structure, the insertion hole of the concrete housing is filled with a filler, Legs are inserted into the insertion holes of the concrete frame, and the connecting member is integrated with the filler hardened in the insertion hole, and is cured in the connecting member and the insertion hole. The steel structure according to any one of claims 7 to 9, wherein the filler forms a shear resistance / transmission means that resists a shear stress generated at a joint between the existing steel beam and the first steel first stud. object.   The shear resistance / transmission means is formed in the vicinity of a central portion of the new steel frame first stud, and the bending resistance / transmission means is formed in the vicinity of both sides of the new steel frame first stud. The steel structure according to any one of claims 15 to 15.   The shear resistance / transmission means is formed along a first H-shaped steel web that forms the new steel frame first stud, and the bending resistance / transmission means is a first that forms the new steel frame first stud. The steel structure according to claim 16, which is formed in the vicinity of one flange and the vicinity of the other flange of the H-shaped steel.

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