JP2017014713A - Existing concrete structure reinforcement structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an existing concrete structure reinforcement structure and an existing concrete structure reinforcement method, easy in assembly and installation with a simple structure, and capable of improving earthquake-resistant performance in an earthquake.SOLUTION: An existing concrete structure reinforcement structure is composed of a horizontal reinforcement frame of horizontally extending to an existing concrete column or an existing concrete beam 3 and connecting a cross-sectional L-shaped member 5 in a rectangular shape, a vertical reinforcement frame for connecting-fixing upper-lower end parts of a web part to a horizontal part of the horizontal reinforcement frame and composed of a cross-sectional T-shaped member arranged so as to vertically extend the web part and a flange part, a fiber sheet 14 wound on/fixed to the outer periphery of the horizontal reinforcement frame and the vertical reinforcement frame and concrete filled-solidified in a cavity of the horizontal reinforcement frame and the vertical reinforcement frame wound with the existing concrete column or the existing concrete beam 3 and the fiber sheet 14 and integrated with an existing concrete structure.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a concrete structure reinforcing structure and a concrete structure reinforcing method in the field of architecture and civil engineering.

  Conventionally, as a reinforcing structure for existing concrete columns and concrete beams, the concrete columns and concrete beams are surrounded by a plurality of reinforcing steel plates while maintaining a predetermined distance between them. Placing and solidifying the concrete. A reinforcement structure that integrates a reinforced steel plate with existing concrete columns and concrete beams has been proposed.

JP 2008-240368 A JP 2011-26786 A

  However, in the conventional reinforcement structure of existing concrete columns and existing concrete beams, there is a problem that the integration between the existing concrete columns and the concrete and the reinforcing steel plates cast and solidified between the existing concrete beams and the reinforcing steel plates is insufficient. As a result, there is a problem that the durability of the reinforced steel plate against displacement during an earthquake is not sufficient, and as a result, the amount of axial and horizontal bars arranged in the space between the reinforced steel plate and existing concrete columns and existing concrete beams is reduced. It had the problem that it had to be increased.

  SUMMARY OF THE INVENTION The present invention solves the problems of the prior art, has a simple structure, is easy to assemble and install, and can improve the seismic performance in the event of an earthquake. The purpose is to provide a method of construction.

  In order to solve the above problems, the existing concrete structure reinforcing structure of the present invention extends horizontally with respect to the existing concrete column or the existing concrete beam in the reinforcing structure of the existing concrete structure such as the existing concrete column or the existing concrete beam. A horizontal reinforcing frame formed by connecting L-shaped members in a rectangular shape, and a cross section arranged such that upper and lower ends of the web portion are connected and fixed to the horizontal portion of the horizontal reinforcing frame so that the web portion and the flange portion extend vertically. A vertical reinforcing frame made of a T-shaped member, a fiber sheet that is wound around and fixed to the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame, and the horizontal reinforcing frame around which the existing concrete column or existing concrete beam and fiber sheet are wound And concrete that fills and solidifies in the gaps of the vertical reinforcing frame and is integrated with the existing concrete structure. And wherein the door.

  Moreover, the existing concrete structure reinforcement structure of this invention arrange | positions a formwork member on the outer periphery of the said horizontal reinforcement frame and the said vertical reinforcement frame, and wraps a fiber sheet around the outer periphery of the said formwork member, It is characterized by the above-mentioned.

  Moreover, the existing concrete structure reinforcement structure of this invention forms the said cross-sectional L-shaped member, the said cross-sectional T-shaped member, and the formwork member used as needed by steel or FRP, It is characterized by the above-mentioned.

  Moreover, the existing concrete structure reinforcement structure of this invention arrange | positions a formwork member as needed with the said horizontal reinforcement frame, the said vertical reinforcement frame, and the said fiber sheet at predetermined intervals in the perimeter of the existing concrete pillar. It is characterized by.

  Further, in the existing concrete structure reinforcing structure of the present invention, the horizontal reinforcing frame and the vertical reinforcing frame are provided on one surface of the existing concrete column, and the vertical portion of the horizontal reinforcing frame and the flange portion of the vertical reinforcing frame are provided on one surface of the existing concrete column. It arrange | positions at a rectangular shape so that it may contact, and the vertical part of the said horizontal reinforcement frame which contacts one surface of an existing concrete pillar, and the existing concrete pillar are fixed with an anchor bolt, It is characterized by the above-mentioned.

  Further, in the existing concrete structure reinforcing structure of the present invention, the vertical portion of the horizontal reinforcing frame and the flange portion of the vertical reinforcing frame are arranged around the intersection of the existing concrete column and the existing concrete beam. It is arranged in a rectangular shape so as to be in contact with one surface of the existing concrete column, and the vertical portion of the horizontal reinforcing frame that is in contact with one surface of the existing concrete column and the existing concrete beam, and the existing concrete column and the existing concrete beam are fixed with anchor bolts. It is the beginning.

  Further, the existing concrete structure reinforcing structure of the present invention is arranged between the existing concrete structure and the horizontal reinforcing frame formed in a rectangular shape and the vertical reinforcing frame with an axial streak, and if necessary, a horizontal streak. It is characterized by doing.

  Further, the existing concrete structure reinforcing method of the present invention is such that horizontal reinforcing frames made of L-shaped members are arranged at predetermined intervals in the height direction with respect to existing concrete columns or existing concrete beams, and horizontal portions of the horizontal reinforcing frames are arranged. A vertical reinforcing frame made of a cross-sectional T-shaped member in which the upper and lower ends of the web portion are positioned and the web portion and the flange portion extend vertically, and the horizontal reinforcing frame and the vertical reinforcing frame are connected and fixed, Forming a rectangular reinforcing frame whose outer periphery is closed by a vertical portion of the horizontal reinforcing frame and a flange portion of the vertical reinforcing frame; and a fiber sheet on the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame whose outer periphery is closed A step of winding and arranging, a step of arranging an axial streak between the horizontal reinforcing frame around which the fiber sheet is wound, the vertical reinforcing frame, and the existing concrete structure, and arranging a horizontal streak as necessary, and the existing concrete The concrete is placed between the horizontal structure, the horizontal reinforcement frame, and the vertical reinforcement frame, and the horizontal reinforcement frame and the vertical reinforcement frame, in which the concrete is solidified and the existing concrete structure and the fiber sheet are wound, are integrated. And at least a step of converting.

In a reinforcing structure of an existing concrete structure such as an existing concrete column or an existing concrete beam, a horizontal reinforcing frame formed by connecting L-shaped cross sections extending horizontally to the existing concrete column or the existing concrete beam in a rectangular shape, and the horizontal A vertical reinforcing frame made of a T-shaped cross section disposed so that the upper and lower ends of the web portion are connected and fixed to the horizontal portion of the reinforcing frame and the web portion and the flange portion extend vertically, and the horizontal reinforcing frame and the vertical reinforcing frame A fiber sheet that is wound around and fixed to the outer periphery, the existing concrete pillar or the existing concrete beam and the horizontal reinforcing frame wound with the fiber sheet, and a space between the vertical reinforcing frame filled and solidified, and the existing concrete structure and the Because it is made of concrete that integrates the formwork members, the structure is simple and easy to assemble. The horizontal part of the horizontal reinforcing frame and the web part of the vertical reinforcing frame function as reinforcing ribs, reducing the amount of reinforcing bars and improving earthquake resistance, and the fiber sheet wrapped around the outer periphery of the formwork member It becomes possible to attenuate energy.
By placing a formwork member on the outer periphery of the horizontal reinforcement frame and the vertical reinforcement frame and winding a fiber sheet around the outer periphery of the formwork member, a stronger reinforcement structure can be obtained.
By forming the cross-sectional L-shaped member, the cross-sectional T-shaped member and the formwork member used as necessary with steel or FRP, it becomes possible to provide a high-strength reinforcing structure made of steel or FRP.
A horizontal portion of the horizontal reinforcing frame integrated with the concrete by arranging the horizontal reinforcing frame, the vertical reinforcing frame and the fiber sheet and, if necessary, a formwork member at a predetermined interval around the entire circumference of the existing concrete column. The web portion of the vertical reinforcing frame functions as a reinforcing rib, improving the seismic performance, and the fiber sheet wound around the outer periphery of the mold member can attenuate the energy at the time of the earthquake.
A horizontal reinforcing frame and a vertical reinforcing frame are arranged on one side of an existing concrete column in a rectangular shape so that the vertical part of the horizontal reinforcing frame and the flange portion of the vertical reinforcing frame are in contact with one side of the existing concrete column. By fixing the vertical part of the horizontal reinforcement frame in contact with the existing concrete column with anchor bolts, the horizontal part and the vertical reinforcement of the horizontal reinforcement frame integrated with concrete can be used even in the reinforcement structure only on one side of the existing concrete column. The web portion of the frame functions as a reinforcing rib, improving the seismic performance, and the fiber sheet wound around the outer periphery of the mold member can attenuate the energy at the time of the earthquake.
Arranged in a rectangular shape so that the vertical portion of the horizontal reinforcing frame and the flange portion of the vertical reinforcing frame are in contact with one surface of the existing concrete column and the existing concrete beam around the entire intersection of the existing concrete column and the existing concrete beam, By fixing the vertical part of the horizontal reinforcing frame that contacts the one side of the existing concrete column and the existing concrete beam and the existing concrete column and the existing concrete beam with anchor bolts, even in the reinforcement structure only on one side of the existing concrete column, The horizontal part of the horizontal reinforcement frame integrated with the concrete and the web part of the vertical reinforcement frame function as reinforcing ribs, improving the earthquake resistance, and the fiber sheet wrapped around the outer periphery of the formwork member to attenuate the energy at the time of earthquake Is possible.
A high-strength reinforcing structure is provided by arranging an axial streak between the existing concrete structure and the horizontal reinforcing frame formed in a rectangular shape and the vertical reinforcing frame, and horizontal reinforcing bars as necessary. Is possible.
Horizontal reinforcing frames made of L-shaped members are arranged at predetermined intervals in the height direction with respect to existing concrete columns or existing concrete beams, and the upper and lower ends of the web portion are located in the horizontal portion of the horizontal reinforcing frame, A vertical reinforcing frame made of a T-shaped member having a web portion and a flange portion extending vertically is arranged, the horizontal reinforcing frame and the vertical reinforcing frame are connected and fixed, and the outer periphery is perpendicular to the vertical portion of the horizontal reinforcing frame and the vertical reinforcing frame field. A step of forming a rectangular reinforcing frame closed by a flange portion, a step of winding and arranging a fiber sheet around the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame whose outer periphery is closed, and the fiber sheet is wound A step of arranging an axial streak between the horizontal reinforcing frame, the vertical reinforcing frame and the existing concrete structure, and arranging a horizontal streak as necessary, the existing concrete structure, the horizontal reinforcing frame and the vertical reinforcing frame. of The structure is simple and assembled by providing at least a step of placing the concrete on the solid, solidifying the concrete, and integrating the horizontal reinforcing frame and the vertical reinforcing frame wound with the existing concrete structure and the fiber sheet. Work is easy, and the horizontal part of the horizontal reinforcement frame integrated with concrete and the web part of the vertical reinforcement frame function as reinforcement ribs, and it is possible to improve earthquake resistance even if the reinforcement reinforcement is reduced. The fiber sheet wound around the outer periphery of the formwork member can attenuate the energy at the time of the earthquake, and can be a low-cost existing concrete structure reinforcement method.

It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. (A) (b) (c) It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a reinforcing structure of existing concrete columns and existing concrete beams.

  In the existing concrete structure, the existing concrete pillar 2 is erected vertically from the floor structure 1, and the existing concrete beam 3 intersects the existing concrete pillar 2 horizontally. The existing concrete column 2 is also erected in the vertical direction above the existing concrete beam 3. The floor slab 4 is supported on the existing concrete beam 3.

  The reinforcement structure of the existing concrete pillar 2 extending in the vertical direction from the floor structure 1 will be described with reference to FIGS. 2, 3, 4, 5 (a), (b), and (c). It arrange | positions so that the horizontal part 5a of the cross-section L-shaped member 5 may contact the floor structure 1 at predetermined intervals with respect to the existing concrete pillar 2 standing upright from the floor structure 1, and several cross-section L-shaped members 5 Are connected to form a rectangular horizontal reinforcing frame 6. When connecting the L-shaped member 5 in a rectangular shape, the end portion of the L-shaped member 5 located at the corner is cut off at an angle of 45 degrees and connected. The horizontal portion 5 a of the horizontal reinforcing frame 6 that is in contact with the floor structure 1 and the floor structure 1 are fixed with anchor bolts 7. A connecting member 9 for connecting and fixing the vertical reinforcing frame 8 is fixed to the horizontal portion 5 a of the horizontal reinforcing frame 6 formed by the L-shaped member 5 with a connecting member fixing pin 17. The connecting member 9 is formed with a vertical reinforcing frame fixing pin insertion hole 9a.

  The vertical reinforcing frame 8 connected and fixed to the horizontal portion 5 a of the horizontal reinforcing frame 6 is formed by a T-shaped member 10 in cross section. The cross-sectional T-shaped member 10 includes a web portion 10a and a flange portion 10b orthogonal to the web portion 10a. The upper and lower portions of the flange portion 10b are cut by the length from the horizontal portion 5a of the L-shaped member 5 to which the upper and lower ends of the web portion 10a are fixed to the upper and lower ends of the vertical portion 5b. When the web portion 10a of the cross-section T-shaped member 10 is connected and fixed to the horizontal portion 5a of the cross-section L-shaped member 5 by the connecting member 9 and the vertical reinforcing frame fixing pin 11 by cutting off a part of the web portion 10a, the cross-section L The surfaces of the vertical part 5b of the letter-shaped member 5 and the flange part 10b of the T-shaped member 10 in cross section are flush.

  When the vertical reinforcing frame 8 is formed by connecting and fixing the plurality of cross-sectional T-shaped members 10 to the horizontal portion 5a that forms one side of the horizontal reinforcing frame 6 configured by connecting the plurality of cross-sectional T-shaped members 10 in a rectangular shape, As shown to Fig.5 (a), it arrange | positions so that the edge part of the adjacent flange part 10b may contact. When the end portion of the flange portion 10b of the T-shaped member 10 located at the corner portion is cut and connected at an angle of 45 degrees, the flange portion 10b of the vertical reinforcement frame 8 is placed on the horizontal reinforcement frame 6 connected in a rectangular shape. Are arranged in a rectangular shape. Since the end portions of the adjacent flange portions 10b are arranged so as to be in close contact with each other, the rectangular outer periphery formed by the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 is smoothly closed by the vertical portion 5b and the flange portion 10b. The outer peripheral surface.

  As shown in FIG. 2, the horizontal reinforcing frame 8 positioned above the floor structure 1 brings the horizontal portions 5 a of the pair of cross-sectional L-shaped members 5 into contact with each other, and the upper and lower horizontal portions 5 a are connected to the horizontal reinforcing frame connecting pins 12. Secure with. A horizontal reinforcing frame 6 and a vertical reinforcing frame 8 are connected and arranged in a rectangular shape around an existing concrete pillar 2 erected from the floor structure 1.

  When the connection arrangement of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 is completed around the existing concrete pillar 2 standing vertically from the floor structure 1, the fiber sheet is wound around the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8. If necessary, the mold member 13 may be disposed on the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape. When arranging the formwork member 13, the fiber sheet 14 is wound around the outer periphery of the formwork member 13. Since the vertical portion 5a of the horizontal reinforcing frame 6 and the flange portion 10b of the vertical reinforcing frame 8 are flush with each other, the placement of the mold member 13 is facilitated. Then, between the existing concrete pillar 2 and the horizontal reinforcement frame 6 and the vertical reinforcement frame 8, the axial reinforcement 15 and the horizontal reinforcement 16 are arranged as needed.

  Uncured cement mortar is placed in the space where the axial streaks 15 and the horizontal streaks 16 arranged as necessary are arranged. When cement mortar mixed with metal fiber and organic fiber is used, it becomes possible to make concrete with high strength. By solidifying the cement mortar, the existing concrete pillar 2 and the horizontal reinforcing frame, the vertical reinforcing frame 8, the formwork member 13, and the fiber sheet 14 are integrated with the solidified concrete, and the seismic performance of the existing concrete pillar 2 is greatly reinforced. The

  In the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 on the side where the cement mortar is placed, the horizontal portion 5a of the L-shaped member 5 and the vertical web portion 10a of the T-shaped member 10 are reinforced in the horizontal and vertical directions. While functioning as a rib to improve seismic performance, the fiber sheet 14 wound around the outer periphery of the formwork member 13 also has a function of attenuating energy during an earthquake. The reinforcement structure of the existing concrete pillar 2 standing from the top of the existing concrete beam 3 is similarly implemented.

  The cross-sectional L-shaped member 5, the cross-sectional T-shaped member 10, and the formwork member 13 may be formed of steel or high-strength RRP. Since the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 can be formed with a standard member having a simple structure, it is possible to provide an existing concrete structure reinforcing structure that is easy to assemble and low in cost.

  FIG. 6 is a diagram showing a reinforcing structure at the intersection of the existing concrete column 2 and the existing concrete beam 3. A horizontal reinforcing frame 6 and a vertical reinforcing frame 8 are connected in a rectangular shape at the intersection of the existing concrete column 2 and the existing concrete beam 3. The vertical portion 5 b of the horizontal reinforcing frame 6 and the flange portion 10 b of the vertical reinforcing frame 8 connected in a rectangular shape are in contact with the existing concrete column 2 and the existing concrete beam 3. The vertical part 5 b of the L-shaped member 5 in contact with the existing concrete column 2 and the existing concrete beam 3, the existing concrete column 2, and the existing concrete beam 3 are fixed with anchor bolts 7.

  The fiber sheet 14 is wound around the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape. If necessary, the mold member 13 may be disposed on the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape. When arranging the formwork member 13, the fiber sheet 14 is wound around the outer periphery of the formwork member 13. In that case, you may fix the both ends of the formwork member 13 and a fiber sheet to the existing concrete beam 3 via the anchor bolt 7. FIG. In FIG. 6, only one side of the intersection between the existing concrete column 2 and the existing concrete beam 3 is shown, but the entire circumference of the intersection between the existing concrete column 2 and the existing concrete beam 3 is reinforced.

  Between the existing concrete column 2 and the existing concrete beam 3 and the horizontal reinforcing frame 6 and the vertical reinforcing frame 8, an axial streak 15 and horizontal bars 16 are arranged as necessary.

  Uncured cement mortar is placed in the space where the axial streaks 15 and the horizontal streaks 16 arranged as necessary are arranged. When cement mortar mixed with metal fiber and organic fiber is used, it becomes possible to make concrete with high strength. By solidifying the cement mortar, the existing concrete pillar 2 and the horizontal reinforcing frame, the vertical reinforcing frame 8, the formwork member 13, and the fiber sheet 14 are integrated with the solidified concrete, and the seismic performance of the existing concrete pillar 2 is greatly reinforced. The

  The cross-sectional L-shaped member 5, the cross-sectional T-shaped member 10, and the formwork member 13 may be formed of steel or high-strength RRP. Since the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 can be formed with a standard member having a simple structure, it is possible to provide an existing concrete structure reinforcing structure that is easy to assemble and low in cost.

FIG. 7 is a diagram showing a reinforcing structure that is reinforced only on one surface side of the existing concrete pillar 1.
A horizontal reinforcing frame 6 and a vertical reinforcing frame 8 are connected in a rectangular shape on one side of the existing concrete column 2. The vertical portion 5b of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 flange portion 10b connected in a rectangular shape are in contact with one surface of the existing concrete column 2. The vertical part 5 b of the L-shaped member 5 in contact with one surface of the existing concrete column 2 and one surface of the existing concrete column 1 are fixed by the anchor bolt 7. The fiber sheet 14 is wound around the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape.
If necessary, the mold member 13 may be disposed on the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8. In that case, the fine sheet 14 is wound around the outer periphery of the mold member 13. You may fix the both ends of the formwork member 13 and a fiber sheet to the side surface of the existing concrete pillar 2 via the anchor bolt 7. FIG.

  Between the one surface side of the existing concrete pillar 2 and the horizontal reinforcement frame 6 and the vertical reinforcement frame 8, the axial reinforcement 15 and the horizontal reinforcement 16 are arranged as needed. Uncured cement mortar is placed in the space where the axial streaks 15 and the horizontal streaks 16 arranged as necessary are arranged. When cement mortar mixed with metal fiber and organic fiber is used, it becomes possible to make concrete with high strength. By solidifying the cement mortar, the existing concrete pillar 2 and the horizontal reinforcing frame, the vertical reinforcing frame 8, the formwork member 13, and the fiber sheet 14 are integrated with the solidified concrete, and the seismic performance of the existing concrete pillar 2 is greatly reinforced. The

  The cross-sectional L-shaped member 5, the cross-sectional T-shaped member 10, and the formwork member 13 may be formed of steel or high-strength RRP. Since the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 can be formed with a standard member having a simple structure, it is possible to provide an existing concrete structure reinforcing structure that is easy to assemble and low in cost.

  As described above, according to the existing concrete concrete structure reinforcing structure and the concrete structure reinforcing method of the present invention, the structure is simple and easy to assemble, and the horizontal portion of the horizontal reinforcing frame integrated with the concrete and the vertical reinforcing frame The web portion functions as a reinforcing rib to improve the earthquake resistance by reducing the amount of reinforcing bars, and the fiber sheet wound around the outer periphery of the formwork member can attenuate the energy at the time of the earthquake.

  1: floor structure, 2: existing concrete column, 3: existing concrete beam, 4: floor slab, 5: cross-section L-shaped member, 5a: horizontal portion, 5b: vertical portion, 6: horizontal reinforcing frame, 7: anchor bolt, 8: vertical reinforcing frame, 9: connecting member, 9a: vertical reinforcing frame fixing pin insertion hole, 10: cross-sectional T-shaped member, 10a: web portion, 10b: flange portion, 11: vertical reinforcing frame fixing pin fixing pin, 12: Horizontal reinforcing frame connecting pin, 13: mold member, 14: fiber sheet, 15: axial streak, 16: horizontal streak, 17: connecting member fixing pin

The present invention relates to an existing concrete structure reinforcing structure in the fields of architecture and civil engineering.

  Conventionally, as a reinforcing structure for existing concrete columns and concrete beams, the concrete columns and concrete beams are surrounded by a plurality of reinforcing steel plates while maintaining a predetermined distance between them. Placing and solidifying the concrete. A reinforcement structure that integrates a reinforced steel plate with existing concrete columns and concrete beams has been proposed.

JP 2008-240368 A JP 2011-26786 A

  However, in the conventional reinforcement structure of existing concrete columns and existing concrete beams, there is a problem that the integration between the existing concrete columns and the concrete and the reinforcing steel plates cast and solidified between the existing concrete beams and the reinforcing steel plates is insufficient. As a result, there is a problem that the durability of the reinforced steel plate against displacement during an earthquake is not sufficient, and as a result, the amount of axial and horizontal bars arranged in the space between the reinforced steel plate and existing concrete columns and existing concrete beams is reduced. It had the problem that it had to be increased.

An object of the present invention is to solve the problems of the prior art, and to provide an existing concrete structure reinforcement structure that has a simple structure, is easy to assemble and install, and can improve the earthquake resistance during an earthquake. And

The existing concrete structure reinforcing structure of the present invention is a reinforcing structure that reinforces the entire circumference of the existing concrete column in order to solve the above-mentioned problem, and has a predetermined interval with respect to the existing concrete column around the entire circumference of the existing concrete column. The height of an existing concrete pillar formed by cutting off one end of a cross-section L-shaped member, which is open and arranged, consisting of a horizontal portion and a vertical portion, at one end of the cross-section L-shaped member located at the corner at a 45 degree angle A horizontal reinforcing frame arranged at predetermined intervals in the direction, a web portion having a length between horizontal portions of the horizontal reinforcing frame arranged in the height direction, and an upper and lower portion that are L-shaped members from the end of the web portion A cross section T-shaped, which is composed of a flange portion cut from the surface of the horizontal portion to the end of the vertical portion, and is fixed to a horizontal portion of a cross-sectional L-shaped member forming a horizontal reinforcing frame via a connecting member. In the corner part One end of the T-shaped member to be placed is cut off at an angle of 45 degrees and connected to the same shape as the horizontal reinforcing frame, and a fiber that is wound around and fixed to the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame It is characterized by comprising a sheet, and a concrete that is filled and solidified in a space between a horizontal reinforcing frame around which an existing concrete column and a fiber sheet are wound and a vertical reinforcing frame, and is solidified and integrated with the existing concrete column .

Moreover, the existing concrete structure reinforcement structure of this invention is a reinforcement structure which reinforces one surface of the existing concrete pillar, Comprising: One end of the cross-section L-shaped member which consists of a cross-section L-shaped member which consists of a horizontal part and a perpendicular part in a corner part Horizontal reinforcement frame that is formed by connecting the surfaces of the existing concrete pillars with the anchor bolts and arranged at predetermined intervals in the height direction of the existing concrete pillars. And a web portion having a length between horizontal portions of the horizontal reinforcing frame arranged in the height direction, and the upper and lower portions from the end portion of the web portion to the horizontal portion surface of the L-shaped member to the vertical portion end portion. A cross-sectional T-shaped member having a cross-sectional T-shaped member that is fixed to a horizontal portion of a cross-sectional L-shaped member that includes a flange portion that is cut by a length and that has a web portion forming a horizontal reinforcing frame via a connecting member. one end A vertical reinforcement frame that is cut out at an angle of 45 degrees and connected in the same shape as the horizontal reinforcement frame, a fiber sheet that is wound around and fixed to the outer periphery of the horizontal reinforcement frame and the vertical reinforcement frame, and one surface of an existing concrete column It is characterized in that it is composed of concrete that is filled in a gap between a horizontal reinforcing frame that is fixed to a fiber sheet and wound with a fiber sheet and is solidified and integrated with an existing concrete column.

The existing concrete structure reinforcing structure of the present invention is a reinforcing structure that reinforces the intersection of an existing concrete column and an existing concrete beam, and is a cross section in which a cross-sectional L-shaped member consisting of a horizontal part and a vertical part is located at a corner part. One end of the L-shaped member is cut at an angle of 45 degrees, and the existing concrete column is formed by connecting to a portion that contacts the surface of the intersection of the existing concrete column and the existing concrete beam and a portion that forms a gap filled with concrete. And horizontal reinforcement frames arranged at predetermined intervals in the height direction of the intersection between the existing concrete column and the existing concrete beam, where the part that contacts the surface of the intersection of the existing concrete beam is fixed by anchor bolts, and in the height direction The web part having the length between the horizontal parts of the horizontal reinforcing frame arranged, and the upper and lower parts are perpendicular to the horizontal part surface of the L-shaped member from the end part of the web part A cross-section in which a cross-section T-shaped member, which is formed of a flange portion cut to the length to the end portion, is fixed to a horizontal portion of a cross-sectional L-shaped member forming a horizontal reinforcing frame via a connecting member at a corner portion. A vertical reinforcing frame arranged by connecting one end of the T-shaped member at an angle of 45 degrees and connected in the same shape as the horizontal reinforcing frame; a fiber sheet wound around and fixed to the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame; The space between the horizontal reinforcement frame and the vertical reinforcement frame fixed on the surface of the intersection of the existing concrete column and the existing concrete beam and wrapped around the fiber sheet is filled and solidified to be integrated with the intersection of the existing concrete column and the existing concrete beam It is characterized by consisting of concrete.

  Moreover, the existing concrete structure reinforcement structure of this invention arrange | positions a formwork member on the outer periphery of a horizontal reinforcement frame and a vertical reinforcement frame, and wraps a fiber sheet around the outer periphery of a formwork member.

Moreover, the existing concrete structure reinforcement structure of this invention forms a cross-sectional L-shaped member, a cross-sectional T-shaped member, and a formwork member with steel or FRP, It is characterized by the above-mentioned.

Further, the existing concrete structure reinforcing structure of the present invention is characterized in that axial streaks and horizontal streaks are arranged in a gap filled with concrete.

A reinforcing structure that reinforces the entire circumference of an existing concrete column, and is provided with a L-shaped cross section consisting of a horizontal portion and a vertical portion at a predetermined interval with respect to the existing concrete column at the corner portion. A horizontal reinforcing frame that is formed by cutting one end of the L-shaped member positioned at an angle of 45 degrees and connecting it in a rectangular shape and arranged at predetermined intervals in the height direction of the existing concrete columns, and arranged in the height direction A web portion having a length between horizontal portions of the horizontal reinforcing frame, and a flange whose upper and lower portions are cut by the length from the end of the web portion to the horizontal portion surface of the L-shaped member to the end of the vertical portion The cross-section T-shaped member fixed to the horizontal part of the L-shaped cross-section member having the web portion forming the horizontal reinforcing frame via the connecting member is connected to one end of the cross-section T-shaped member positioned at the corner at an angle of 45 degrees. Cut and same as horizontal reinforcement frame A vertical reinforcing frame that is connected in a shape, a fiber sheet that is wound around and fixed to the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame, and a space between the horizontal reinforcing frame and the vertical reinforcing frame around which the existing concrete column and the fiber sheet are wound The structure is simple and easy to assemble, and the horizontal part of the horizontal reinforcing frame and the web part of the vertical reinforcing frame are integrated with the concrete. It functions as a reinforcing rib, reduces the amount of reinforcing bars, improves the earthquake resistance, and the fiber sheet wound around the outer periphery can attenuate the energy at the time of earthquake.
Reinforcement structure that reinforces one surface of an existing concrete pillar, and cuts one end of a cross-sectional L-shaped member consisting of a horizontal part and a vertical part at a corner part at a 45 degree angle and connects them in a rectangular shape A horizontal reinforcement frame that is formed at a predetermined interval in the height direction of the existing concrete column and a portion that contacts one surface of the existing concrete column is fixed by anchor bolts, and a horizontal reinforcement frame that is disposed in the height direction. The web portion is composed of a web portion having a length between the horizontal portions, and a flange portion whose upper and lower portions are cut by the length from the end portion of the web portion to the horizontal portion surface of the L-shaped member to the vertical end portion. The horizontal reinforcing frame is formed by cutting off one end of the cross-sectional T-shaped member positioned at the corner portion at a 45 degree angle from the cross-sectional T-shaped member fixed to the horizontal portion of the L-shaped cross-sectional member forming the horizontal reinforcing frame via the connecting member. With the same shape as Vertical reinforcing frame, a horizontal reinforcing frame and a fiber sheet that is wound around and fixed to the outer periphery of the vertical reinforcing frame, and a horizontal reinforcing frame and a vertical reinforcing frame that are fixed to one surface of an existing concrete pillar and wrapped around the fiber sheet It is composed of concrete that is solidified by filling the space between them and integrated with the existing concrete pillars, so that even in the reinforcement structure only on one side of the existing concrete pillars, the horizontal part and the vertical reinforcement of the horizontal reinforcement frame integrated with concrete The web part of the frame functions as a reinforcing rib, improving the earthquake resistance, and the fiber sheet wound around the outer periphery can attenuate the energy at the time of the earthquake.
It is a reinforcing structure that reinforces the intersection of existing concrete columns and existing concrete beams, and cuts one end of the L-shaped member with a horizontal part and a vertical part at an angle of 45 degrees. The part that contacts the surface of the intersection of the existing concrete column and the existing concrete beam and the part that contacts the surface of the intersection of the existing concrete column and the existing concrete beam that is connected to the part that forms the gap filled with concrete Is fixed by anchor bolts, and the length between the horizontal reinforcement frame arranged at predetermined intervals in the height direction of the intersection of the existing concrete column and the existing concrete beam, and the horizontal part of the horizontal reinforcement frame arranged in the height direction And a flange portion that is cut by a length from the end of the web portion to the horizontal surface of the L-shaped member to the end of the vertical portion. One end of the cross-sectional T-shaped member positioned at the corner portion is cut at an angle of 45 degrees. The cross-sectional T-shaped member is fixed to the horizontal portion of the cross-sectional L-shaped member forming the horizontal reinforcing frame through the connecting member. Fixed to the surface of the intersection of the vertical reinforcement frame that is connected and arranged in the same shape as the horizontal reinforcement frame, the fiber sheet that is wound around and fixed to the outer periphery of the horizontal reinforcement frame and the vertical reinforcement frame, and the existing concrete column and the existing concrete beam The existing concrete column and the existing concrete are made of a concrete which is filled and solidified in the gap between the horizontal reinforcing frame and the vertical reinforcing frame wound with the fiber sheet and solidified and integrated with the intersection of the existing concrete column and the existing concrete beam. even reinforcing structure for reinforcing the intersection of the beam, the web portion of the horizontal portion and a vertical reinforcing frame horizontal reinforcing frame integrated with the concrete acts as a reinforcing rib, seismic Improve performance, fiber sheet wound on the outer periphery makes it possible to attenuate the energy of an earthquake.
A stronger reinforcing structure can be obtained by disposing the formwork members on the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame and winding the fiber sheet around the outer periphery of the formwork member.
By forming the cross-sectional L-shaped member, the cross-sectional T-shaped member, and the formwork member from steel or FRP, it becomes possible to obtain a high-strength reinforcing structure made of steel or FRP.
By arranging axial stripes and horizontal stripes in the gap filled with concrete, a high-strength reinforcing structure can be obtained.

It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. (A) (b) (c) It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention. It is a figure which shows embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a reinforcing structure of existing concrete columns and existing concrete beams.

  In the existing concrete structure, the existing concrete pillar 2 is erected vertically from the floor structure 1, and the existing concrete beam 3 intersects the existing concrete pillar 2 horizontally. The existing concrete column 2 is also erected in the vertical direction above the existing concrete beam 3. The floor slab 4 is supported on the existing concrete beam 3.

  The reinforcement structure of the existing concrete pillar 2 extending in the vertical direction from the floor structure 1 will be described with reference to FIGS. 2, 3, 4, 5 (a), (b), and (c). It arrange | positions so that the horizontal part 5a of the cross-section L-shaped member 5 may contact the floor structure 1 at predetermined intervals with respect to the existing concrete pillar 2 standing upright from the floor structure 1, and several cross-section L-shaped members 5 Are connected to form a rectangular horizontal reinforcing frame 6. When connecting the L-shaped member 5 in a rectangular shape, the end portion of the L-shaped member 5 located at the corner is cut off at an angle of 45 degrees and connected. The horizontal portion 5 a of the horizontal reinforcing frame 6 that is in contact with the floor structure 1 and the floor structure 1 are fixed with anchor bolts 7. A connecting member 9 for connecting and fixing the vertical reinforcing frame 8 is fixed to the horizontal portion 5 a of the horizontal reinforcing frame 6 formed by the L-shaped member 5 with a connecting member fixing pin 17. The connecting member 9 is formed with a vertical reinforcing frame fixing pin insertion hole 9a.

  The vertical reinforcing frame 8 connected and fixed to the horizontal portion 5 a of the horizontal reinforcing frame 6 is formed by a T-shaped member 10 in cross section. The cross-sectional T-shaped member 10 includes a web portion 10a and a flange portion 10b orthogonal to the web portion 10a. The upper and lower portions of the flange portion 10b are cut by the length from the horizontal portion 5a of the L-shaped member 5 to which the upper and lower ends of the web portion 10a are fixed to the upper and lower ends of the vertical portion 5b. When the web portion 10a of the cross-section T-shaped member 10 is connected and fixed to the horizontal portion 5a of the cross-section L-shaped member 5 by the connecting member 9 and the vertical reinforcing frame fixing pin 11 by cutting off a part of the web portion 10a, the cross-section L The surfaces of the vertical part 5b of the letter-shaped member 5 and the flange part 10b of the T-shaped member 10 in cross section are flush.

  When the vertical reinforcing frame 8 is formed by connecting and fixing the plurality of cross-sectional T-shaped members 10 to the horizontal portion 5a that forms one side of the horizontal reinforcing frame 6 configured by connecting the plurality of cross-sectional T-shaped members 10 in a rectangular shape, As shown to Fig.5 (a), it arrange | positions so that the edge part of the adjacent flange part 10b may contact. When the end portion of the flange portion 10b of the T-shaped member 10 located at the corner portion is cut and connected at an angle of 45 degrees, the flange portion 10b of the vertical reinforcement frame 8 is placed on the horizontal reinforcement frame 6 connected in a rectangular shape. Are arranged in a rectangular shape. Since the end portions of the adjacent flange portions 10b are arranged so as to be in close contact with each other, the rectangular outer periphery formed by the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 is smoothly closed by the vertical portion 5b and the flange portion 10b. The outer peripheral surface.

  As shown in FIG. 2, the horizontal reinforcing frame 8 positioned above the floor structure 1 brings the horizontal portions 5 a of the pair of cross-sectional L-shaped members 5 into contact with each other, and the upper and lower horizontal portions 5 a are connected to the horizontal reinforcing frame connecting pins 12. Secure with. A horizontal reinforcing frame 6 and a vertical reinforcing frame 8 are connected and arranged in a rectangular shape around an existing concrete pillar 2 erected from the floor structure 1.

  When the connection arrangement of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 is completed around the existing concrete pillar 2 standing vertically from the floor structure 1, the fiber sheet is wound around the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8. If necessary, the mold member 13 may be disposed on the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape. When arranging the formwork member 13, the fiber sheet 14 is wound around the outer periphery of the formwork member 13. Since the vertical portion 5a of the horizontal reinforcing frame 6 and the flange portion 10b of the vertical reinforcing frame 8 are flush with each other, the placement of the mold member 13 is facilitated. Then, between the existing concrete pillar 2 and the horizontal reinforcement frame 6 and the vertical reinforcement frame 8, the axial reinforcement 15 and the horizontal reinforcement 16 are arranged as needed.

  Uncured cement mortar is placed in the space where the axial streaks 15 and the horizontal streaks 16 arranged as necessary are arranged. When cement mortar mixed with metal fiber and organic fiber is used, it becomes possible to make concrete with high strength. By solidifying the cement mortar, the existing concrete pillar 2 and the horizontal reinforcing frame, the vertical reinforcing frame 8, the formwork member 13, and the fiber sheet 14 are integrated with the solidified concrete, and the seismic performance of the existing concrete pillar 2 is greatly reinforced. The

  In the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 on the side where the cement mortar is placed, the horizontal portion 5a of the L-shaped member 5 and the vertical web portion 10a of the T-shaped member 10 are reinforced in the horizontal and vertical directions. While functioning as a rib to improve seismic performance, the fiber sheet 14 wound around the outer periphery of the formwork member 13 also has a function of attenuating energy during an earthquake. The reinforcement structure of the existing concrete pillar 2 standing from the top of the existing concrete beam 3 is similarly implemented.

  The cross-sectional L-shaped member 5, the cross-sectional T-shaped member 10, and the formwork member 13 may be formed of steel or high-strength RRP. Since the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 can be formed with a standard member having a simple structure, it is possible to provide an existing concrete structure reinforcing structure that is easy to assemble and low in cost.

FIG. 6 is a diagram showing a reinforcing structure at the intersection of the existing concrete column 2 and the existing concrete beam 3. A horizontal reinforcement frame 6 and a vertical reinforcement frame 8 are connected to the intersection of the existing concrete column 2 and the existing concrete beam 3 so that a portion in contact with the intersection of the existing concrete column 2 and the existing concrete beam 3 and a gap filled with concrete are formed. Form. The vertical part 5b of the L-shaped member 5 in contact with the existing concrete column 2 and the existing concrete beam 3, the existing concrete column 2 and the existing concrete beam 3 are fixed with anchor bolts 7.

  The fiber sheet 14 is wound around the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8. If necessary, the mold member 13 may be disposed on the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape. When arranging the formwork member 13, the fiber sheet 14 is wound around the outer periphery of the formwork member 13. In that case, you may fix the both ends of the formwork member 13 and a fiber sheet to the existing concrete beam 3 via the anchor bolt 7. FIG. In FIG. 6, only one side of the intersection between the existing concrete column 2 and the existing concrete beam 3 is shown, but the entire circumference of the intersection between the existing concrete column 2 and the existing concrete beam 3 is reinforced.

  Between the existing concrete column 2 and the existing concrete beam 3 and the horizontal reinforcing frame 6 and the vertical reinforcing frame 8, an axial streak 15 and horizontal bars 16 are arranged as necessary.

  Uncured cement mortar is placed in the space where the axial streaks 15 and the horizontal streaks 16 arranged as necessary are arranged. When cement mortar mixed with metal fiber and organic fiber is used, it becomes possible to make concrete with high strength. By solidifying the cement mortar, the existing concrete pillar 2 and the horizontal reinforcing frame, the vertical reinforcing frame 8, the formwork member 13, and the fiber sheet 14 are integrated with the solidified concrete, and the seismic performance of the existing concrete pillar 2 is greatly reinforced. The

  The cross-sectional L-shaped member 5, the cross-sectional T-shaped member 10, and the formwork member 13 may be formed of steel or high-strength RRP. Since the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 can be formed with a standard member having a simple structure, it is possible to provide an existing concrete structure reinforcing structure that is easy to assemble and low in cost.

FIG. 7 is a diagram showing a reinforcing structure that is reinforced only on one surface side of the existing concrete pillar 1.
A horizontal reinforcing frame 6 and a vertical reinforcing frame 8 are connected in a rectangular shape on one side of the existing concrete column 2. The vertical portion 5b of the horizontal reinforcing frame 6 and the flange portion 10b of the vertical reinforcing frame 8 connected in a rectangular shape are in contact with one surface of the existing concrete column 2. The vertical part 5 b of the L-shaped member 5 in contact with one surface of the existing concrete column 2 and one surface of the existing concrete column 1 are fixed by the anchor bolt 7. The fiber sheet 14 is wound around the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 connected in a rectangular shape.
If necessary, the mold member 13 may be disposed on the outer periphery of the horizontal reinforcing frame 6 and the vertical reinforcing frame 8. In that case, the fine sheet 14 is wound around the outer periphery of the mold member 13. You may fix the both ends of the formwork member 13 and a fiber sheet to the side surface of the existing concrete pillar 2 via the anchor bolt 7. FIG.

  Between the one surface side of the existing concrete pillar 2 and the horizontal reinforcement frame 6 and the vertical reinforcement frame 8, the axial reinforcement 15 and the horizontal reinforcement 16 are arranged as needed. Uncured cement mortar is placed in the space where the axial streaks 15 and the horizontal streaks 16 arranged as necessary are arranged. When cement mortar mixed with metal fiber and organic fiber is used, it becomes possible to make concrete with high strength. By solidifying the cement mortar, the existing concrete pillar 2 and the horizontal reinforcing frame, the vertical reinforcing frame 8, the formwork member 13, and the fiber sheet 14 are integrated with the solidified concrete, and the seismic performance of the existing concrete pillar 2 is greatly reinforced. The

  The cross-sectional L-shaped member 5, the cross-sectional T-shaped member 10, and the formwork member 13 may be formed of steel or high-strength RRP. Since the horizontal reinforcing frame 6 and the vertical reinforcing frame 8 can be formed with a standard member having a simple structure, it is possible to provide an existing concrete structure reinforcing structure that is easy to assemble and low in cost.

  As described above, according to the existing concrete concrete structure reinforcing structure and the concrete structure reinforcing method of the present invention, the structure is simple and easy to assemble, and the horizontal portion of the horizontal reinforcing frame integrated with the concrete and the vertical reinforcing frame The web portion functions as a reinforcing rib to improve the earthquake resistance by reducing the amount of reinforcing bars, and the fiber sheet wound around the outer periphery of the formwork member can attenuate the energy at the time of the earthquake.

1: floor structure, 2: existing concrete column, 3: existing concrete beam, 4: floor slab, 5: cross-section L-shaped member, 5a: horizontal portion, 5b: vertical portion, 6: horizontal reinforcing frame, 7: anchor bolt, 8: vertical reinforcing frame, 9: connecting member, 9a: vertical reinforcing frame fixing pin insertion hole, 10: cross-sectional T-shaped member, 10a: web portion, 10b: flange portion, 11: vertical reinforcing frame fixing pin fixing pin, 12: Horizontal reinforcing frame connecting pin, 13: mold member, 14: fiber sheet, 15: axial streak, 16: horizontal streak, 17: connecting member fixing pin

The existing concrete structure reinforcing structure of the present invention is a reinforcing structure that reinforces the entire circumference of the existing concrete column in order to solve the above-mentioned problem, and has a predetermined interval with respect to the existing concrete column around the entire circumference of the existing concrete column. open Ri Do from disposed horizontal portion and a vertical portion, one end located at a corner portion at predetermined intervals in the height direction of the existing concrete columns are formed by concatenating the L-shaped cross section member in a rectangular shape having an angle of 45 degrees A horizontal reinforcing frame disposed in the horizontal direction, a web portion having a length between horizontal portions of the horizontal reinforcing frame disposed in the height direction and fixed to the horizontal portion of the horizontal reinforcing frame via a connecting member, and a web portion, One end located at the corner , consisting of a flange that is fixed to the horizontal part of the upper and lower horizontal reinforcement frames and has a length between the vertical parts of the upper and lower horizontal reinforcement frames and is flush with the vertical part of the horizontal reinforcement frame Has an angle of 45 degrees A vertical reinforcing frame arranged to connect the T-shaped cross-section member in the same shape as the horizontal reinforcing frame, and the fiber sheet which is fixed to the outer periphery of the horizontal reinforcing frame and vertical reinforcing frame, existing concrete columns and the fiber sheet is fixed And concrete filled in a gap between the horizontal reinforcing frame and the vertical reinforcing frame.

Further, the existing concrete structure reinforcing structure of the present invention is a reinforcing structure for reinforcing one surface of an existing concrete column, and is composed of a horizontal part and a vertical part, and one end located at a corner part has an L-shaped cross section having an angle of 45 degrees. A horizontal reinforcement frame that is formed by connecting the members in a rectangular shape and that is in contact with one surface of the existing concrete column is fixed by anchor bolts and arranged at predetermined intervals in the height direction of the existing concrete column, and arranged in the height direction A web portion having a length between the horizontal portions of the horizontal reinforcing frame, which is fixed to the horizontal portion of the horizontal reinforcing frame via a connecting member, and a state where the web portion is fixed to the horizontal portion of the upper and lower horizontal reinforcing frames A horizontal T-shaped member having a length between the vertical portions of the upper and lower horizontal reinforcing frames and having a flange portion that is flush with the vertical portion of the horizontal reinforcing frame and having an angle of 45 degrees at one end located at the corner portion. Reinforcement frame A vertical reinforcing frame disposed linked to the same shape, the fiber sheet which is fixed to the outer periphery of the horizontal reinforcing frame and vertical reinforcing frame, and a flat reinforcing frame fibrous sheet are secured to one surface of an existing concrete column is fixed Concrete filled in the gaps between the vertical reinforcement frames;
It is characterized by comprising.

Moreover, the existing concrete structure reinforcing structure of the present invention is a reinforcing structure that reinforces the intersection of an existing concrete column and an existing concrete beam, and is composed of a horizontal portion and a vertical portion, and one end located at a corner portion is at an angle of 45 degrees. The cross-section of the existing concrete column and the existing concrete beam is formed by connecting the L-shaped member having a cross section to the portion that contacts the surface of the intersection of the existing concrete column and the existing concrete beam and the portion that forms the gap filled with concrete Of horizontal reinforcement frames arranged at predetermined intervals in the height direction of the intersections of existing concrete columns and existing concrete beams, and the portions in contact with the surface of with a length between the horizontal portion, a web portion which is fixed through a connecting member to the horizontal portion of the horizontal reinforcing frame, water horizontal reinforcing frame of the web portion is vertically Consists flange is perpendicular portion flush horizontal reinforcing frame comprises a length between the vertical portion of the horizontal reinforcing frame vertically in a fixed state in part, an angle of one end 45 degrees located in a corner portion Vertical reinforcement frame arranged by connecting the T-shaped members in the same shape as the horizontal reinforcement frame, a fiber sheet fixed to the outer periphery of the horizontal reinforcement frame and the vertical reinforcement frame, and the intersection of the existing concrete column and the existing concrete beam And a concrete filled in a gap between the vertical reinforcing frame and a horizontal reinforcing frame fixed to the surface of the fiber sheet.

A reinforcing structure for reinforcing the entire circumference of the existing concrete columns, Ri Do from the horizontal portion and a vertical portion disposed at a specific distance from the existing concrete columns all around the existing concrete columns, one located in the corner A horizontal reinforcing frame formed by connecting L-shaped members having an angle of 45 degrees in a rectangular shape and arranged at predetermined intervals in the height direction of an existing concrete column, and a horizontal reinforcing frame arranged in the height direction a web portion which is fixed via a connecting member to the horizontal portion of the horizontal reinforcing frame comprises a length between the horizontal portion of the horizontal reinforcing frame vertically in a state where the web portion is secured to the horizontal portion of the horizontal reinforcing frame vertically The cross-section T-shaped member having a length between the vertical portions and having a flange portion that is flush with the vertical portion of the horizontal reinforcing frame and having an angle of 45 degrees at one end of the corner portion has the same shape as the horizontal reinforcing frame. Vertical reinforcement frame connected and arranged By consists of concrete which is filled in a gap between the horizontal reinforcing frame and the fibrous sheet is fixed to the outer periphery of the vertical reinforcing frame, existing concrete columns and fiber sheet fixed horizontal reinforcing frame and vertical reinforcing frame, The structure is simple and easy to assemble. The horizontal part of the horizontal reinforcement frame integrated with concrete and the web part of the vertical reinforcement frame function as reinforcement ribs, reducing the amount of reinforcing bars and improving the earthquake resistance, and the outer periphery. The fiber sheet fixed to can attenuate the energy at the time of earthquake.
A reinforcing structure for reinforcing one side of an existing concrete column, which is formed by connecting a L-shaped cross section having a horizontal portion and a vertical portion and one end located at a corner portion having an angle of 45 degrees in a rectangular shape. The length between the horizontal reinforcement frame that is fixed at fixed intervals in the height direction of the existing concrete column and the horizontal portion of the horizontal reinforcement frame that is arranged in the height direction is fixed by anchor bolts at the part that contacts one surface And a length between a vertical portion of the upper and lower horizontal reinforcing frames in a state where the web portion is fixed to the horizontal portion of the horizontal reinforcing frame via a connecting member and the web portion is fixed to the horizontal portion of the upper and lower horizontal reinforcing frames. A vertical section that is formed by connecting a T-shaped member having a 45-degree angle at one end located at the corner portion in the same shape as the horizontal reinforcing frame. Reinforcing frame and horizontal A fiber sheet which is fixed to the outer periphery of the strong frame and vertical reinforcing frame, and concrete fiber sheet is fixed to one surface of an existing concrete column is filled in a gap between the fixed flat reinforcing frame and the vertical reinforcing frame, consisting of Therefore, even in the reinforcement structure only on one side of existing concrete columns, the horizontal part of the horizontal reinforcement frame integrated with the concrete and the web part of the vertical reinforcement frame function as reinforcement ribs, reducing the amount of reinforcement bars and making it earthquake resistant. The fiber sheet fixed to the outer periphery can attenuate the energy at the time of earthquake.
Reinforcement structure that reinforces the intersection of existing concrete columns and existing concrete beams, and has an L-shaped cross-section with a 45 ° angle at one end located at the corner , consisting of a horizontal portion and a vertical portion. The part that contacts the surface of the crossing part of the beam and the part that forms the void filled with concrete, and the part that contacts the surface of the crossing part of the existing concrete column and the existing concrete beam are fixed by anchor bolts The horizontal reinforcement frame is provided with a horizontal reinforcement frame arranged at predetermined intervals in the height direction of the intersection of the concrete pillar and the existing concrete beam, and a length between the horizontal parts of the horizontal reinforcement frame arranged in the height direction . a web portion which is fixed via a connecting member to the horizontal section, between the vertical portion of the horizontal reinforcing frame vertically in a state where the web portion is secured to the horizontal portion of the horizontal reinforcing frame vertically Consists flange is perpendicular portion flush horizontal reinforcing frame comprises a length, one end is located in the corner portion is disposed to connect the T-shaped cross-section member in the same shape as the horizontal reinforcing frame having an angle of 45 degrees Vertical reinforcement frame, horizontal reinforcement frame and fiber sheet fixed to the outer periphery of the vertical reinforcement frame, horizontal reinforcement frame fixed to the surface of the intersection of existing concrete columns and existing concrete beams and fiber sheet fixed and vertical reinforcement and concrete is filled in a gap between the frame, that consist of, in the reinforcing structure for reinforcing the intersection of the existing concrete beams with existing concrete columns, horizontal portion and a vertical reinforcing frame horizontal reinforcing frame integrated with the concrete web portion serves as a reinforcing rib, and reduce the amount of reinforcement to improve the vibration resistance, fixed fiber sheet it is possible to attenuate the energy of the earthquake on the outer periphery
A stronger reinforcing structure can be obtained by disposing the formwork members on the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame and fixing the fiber sheet on the outer periphery of the formwork member.
By forming the cross-sectional L-shaped member, the cross-sectional T-shaped member, and the formwork member from steel or FRP, it becomes possible to obtain a high-strength reinforcing structure made of steel or FRP.
By arranging axial stripes and horizontal stripes in the gap filled with concrete, a high-strength reinforcing structure can be obtained.

Claims (8)

In the reinforcement structure of existing concrete structures such as existing concrete columns or existing concrete beams,
A horizontal reinforcement frame formed by connecting L-shaped cross-section members extending horizontally to an existing concrete column or existing concrete beam in a rectangular shape;
A vertical reinforcing frame comprising a cross-sectional T-shaped member arranged such that upper and lower ends of the web portion are connected and fixed to a horizontal portion of the horizontal reinforcing frame, and the web portion and the flange portion extend vertically;
A fiber sheet wound around and fixed to the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame;
Concrete that is filled and solidified in the gap between the existing concrete pillar or existing concrete beam or existing concrete beam and fiber sheet and the vertical reinforcement frame and is integrated with the existing concrete structure;
An existing concrete structure reinforcement structure characterized by comprising:   The existing concrete structure reinforcement structure according to claim 1, wherein a formwork member is disposed on the outer periphery of the horizontal reinforcement frame and the vertical reinforcement frame, and a fiber sheet is wound around the outer periphery of the formwork member.   3. The existing concrete structure reinforcing structure according to claim 2, wherein the cross-sectional L-shaped member, the cross-sectional T-shaped member, and a formwork member used as necessary are formed of steel or FRP.   The horizontal reinforcing frame, the vertical reinforcing frame, the fiber sheet, and a formwork member used as necessary are arranged at predetermined intervals around the entire circumference of the existing concrete column. Existing concrete structure reinforcement structure.   The horizontal reinforcing frame and the vertical reinforcing frame are arranged in a rectangular shape on one surface of an existing concrete column so that a vertical portion of the horizontal reinforcing frame and a flange portion of the vertical reinforcing frame are in contact with one surface of the existing concrete column. The existing concrete structure reinforcing structure according to any one of claims 1 to 4, wherein a vertical portion of the horizontal reinforcing frame that contacts one surface of the column and an existing concrete column are fixed with an anchor bolt.   Arranged in a rectangular shape so that the vertical portion of the horizontal reinforcing frame and the flange portion of the vertical reinforcing frame are in contact with one surface of the existing concrete column and the existing concrete beam around the entire intersection of the existing concrete column and the existing concrete beam, The vertical part of the said horizontal reinforcement frame which contacts the existing concrete pillar and one surface of an existing concrete beam, the existing concrete pillar, and the existing concrete beam are fixed with an anchor bolt, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. The existing concrete structure reinforcement structure described in 1.   7. An axial streak is arranged between the existing concrete structure and the horizontal reinforcing frame formed in a rectangular shape and the vertical reinforcing frame, and horizontal reinforcing bars are arranged if necessary. The existing concrete structure reinforcement structure according to item 1. Horizontal reinforcing frames made of L-shaped members are arranged at predetermined intervals in the height direction with respect to existing concrete columns or existing concrete beams, and the upper and lower ends of the web portion are located in the horizontal portion of the horizontal reinforcing frame, A vertical reinforcing frame made of a T-shaped member having a web portion and a flange portion extending vertically is arranged, the horizontal reinforcing frame and the vertical reinforcing frame are connected and fixed, and the outer periphery is formed between the vertical portion of the horizontal reinforcing frame and the vertical reinforcing frame. Forming a rectangular reinforcing frame closed at the flange portion;
A step of winding and arranging a fiber sheet around the outer periphery of the horizontal reinforcing frame and the vertical reinforcing frame whose outer periphery is closed;
A step of arranging an axial streak between the horizontal reinforcing frame around which the fiber sheet is wound, the vertical reinforcing frame and the existing concrete structure, and if necessary, a horizontal streak;
Concrete is placed between the existing concrete structure, the horizontal reinforcement frame, and the vertical reinforcement frame, and the horizontal reinforcement frame and the vertical reinforcement frame around which the concrete is solidified and the existing concrete structure and the fiber sheet are wound. The process of integrating;
An existing concrete structure reinforcement method characterized by comprising at least.

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