JP4355680B2 - Seismic reinforcement device - Google Patents

Description

  The present invention relates to a seismic reinforcement device that constitutes a hole-down structure in which a foundation, a base, and a pillar are integrated.

  In wooden buildings, joints and joints are stipulated in the revised Building Standard Law. In a wooden building, for example, a seismic reinforcement device 100 having a hole-down structure shown in FIG. 8 is adopted based on this rule. The seismic reinforcement device 100 is provided at a place where a base 105 framed by an anchor bolt 102, a nut 103, a receiving plate 104 and the like is fixed on a cloth base 101, and a column 106 is erected at a predetermined position of the base 105. .

  The seismic strengthening device 100 is provided near the position where the pillar 106 of the base 105 is erected, through a mounting bolt 107 whose bottom surface is secured by a circular washer 107A, and the tip of the mounting bolt 107 is attached to the column 106. It is inserted into the holder cylinder portion 108A of the fixed hole-down metal fitting 108 and tightened and fixed by the nut 109. The seismic reinforcement apparatus 100 fixes the base 105 to the fabric foundation 101 with the anchor bolts 102 and the like, and fixes the pillar 106 to the base 105 with the mounting bolts 107 and the hole down metal fittings 108 and the like. Ensure that the characteristics are obtained.

  As the seismic reinforcement device, an anchor bolt embedded in the fabric foundation 101 is used instead of the mounting bolt 107, and the tip of the anchor bolt penetrating through the base 105 is inserted into the holder cylinder portion 108A of the hole-down metal fitting 108. A structure is also employed in which the nut 109 is fastened and fixed. A seismic reinforcement device using a hole-down fitting is disclosed in Patent Document 1, for example.

JP-A-7-247599

  By the way, in a wooden building, a brace is combined as a reinforcing material between pillars, or a fire is attached to a joint portion between the base 105 and the pillar 106. In the conventional seismic reinforcement apparatus 100, as described above, the hole down metal fitting 108 is attached to the connecting portion of the pillar 106 with the base 105. Therefore, in the conventional seismic reinforcement device 100, the fixing positions of the hole-down metal fitting 108 and the reinforcing material overlap with each other, and it is difficult to fix one of them at the optimal position, so that a predetermined seismic characteristic is impaired. was there. The seismic reinforcement device 100 is more difficult to perform by avoiding existing reinforcing materials, wiring, or piping existing at the joint between the base 105 and the column 106, particularly when applied to renovation work for improving seismic resistance. Met.

  Further, in the conventional seismic reinforcement apparatus 100, the hole down metal fitting 108 and the mounting bolt 107 or the anchor bolt 102, for example, sufficient rigidity against a vertical load acting on the tenoned base 105 and the pillar 106, for example. Play. However, in the conventional seismic reinforcement apparatus 100, in order to form the bolt insertion hole in the vicinity of the joint portion of the base 105 with the column 106, a crack from the bolt insertion hole toward the tenon groove is caused by repeated earthquakes, for example. Has occurred, and the strength against the load in the horizontal direction is reduced. In the seismic reinforcement apparatus 100, in the case where the anchor bolt embedded in the fabric foundation 101 is directly fixed to the hole-down metal fitting 108, the horizontal load directly acts on the joint portion between the base 105 and the column 106. The problem becomes more pronounced. In the seismic reinforcement apparatus 100, such a problem becomes conspicuous even when low-cost wood having a slightly low strength is used for the base 105 and the pillar 106.

  Further, in the conventional seismic reinforcement apparatus 100, there is a large variation in the protruding position and height position of the anchor bolt 102 embedded in the concrete cloth foundation 101, and the hole-down metal fitting 108 in which the mounting hole is pre-cut. However, there is a problem that the positioning of the head is extremely difficult and the workability is lowered. For this reason, the seismic reinforcement apparatus 100 has been designed to support the field by forming a mounting hole in the hole-down fitting 108.

  Therefore, the present invention directly integrates the foundation, foundation, and pillars, and can attach reinforcing materials such as braces, and has great rigidity against vertical and horizontal loads, improving workability and reducing costs. An object of the present invention is to provide a seismic reinforcement device.

The seismic reinforcement apparatus according to the present invention that achieves the above-described object is a bolt formed on a foundation provided with an anchor bolt embedded in a base end and protruded at a predetermined height from the upper surface, facing the anchor bolt. A base is installed by penetrating the upper end from the hole, and a pillar is erected on the base, and a reinforcing metal fitting is fixed across the base and the pillar to perform seismic reinforcement. The seismic reinforcement device has a plurality of mounting holes each having a long hole in the length direction and penetrating in the thickness direction, and the first mounting hole on the corner portion side is longer than the other mounting holes. A first mounting portion and a second mounting portion which are formed as orthogonal to each other and have the same length, and a central portion from the tip side along the side edge of the first mounting portion and the second mounting portion. The bracing part which is formed in a generally fan shape by being gradually widened toward the part and is bent and formed with a plurality of attachment holes to integrate the first attachment part and the second attachment part, Opposite the first mounting portion and the second mounting portion that form the cornering portion by forming the corner portion by integrating the opposing ends of the first mounting portion and the second mounting portion. Cut out at the corners to be inserted and through the electrical wiring and piping, and the first mounting And overall a substantially L-shaped reinforcing brackets consisting of a guide space to achieve the buffering action of the second mounting part or the brace portion is used. The seismic reinforcement device has an axial length that is slightly longer than the thickness of the foundation and column, and is approximately the same diameter as the bolt holes formed in these foundations and columns, and a plurality of retaining parts consisting of wedge-shaped projections are integrated on the outer periphery. And a peripheral screw formed in a predetermined axial length range on the other end side of the main body portion, and the retaining portion is bolted by being driven into each bolt hole of the base or the pillar. A plurality of seismic mounting bolts are used that bite into the inner wall of the steel plate and prevent it from coming off.

  In the seismic strengthening device, each seismic mounting bolt is driven into a bolt hole facing the base or the column from the side facing the mounting surface of the reinforcing bracket, and the outer peripheral screw protrudes from the mounting surface of the base or the column. In the seismic reinforcement device, the reinforcing bracket has the first mounting portion attached to the outer surface of the seismic mounting bolt while the second mounting portion is pressed against the mounting surface of the column by passing the outer peripheral screw of the seismic mounting bolt through the mounting hole. They are put through the mounting holes and placed on the mounting surface of the base to be combined. In the seismic reinforcement device, the reinforcing bracket embeds the base end portion in the foundation at a position corresponding to the corner portion with respect to the foundation and the base of the first attachment portion, and the first attachment portion of the first attachment portion via the bolt hole of the base. 1 A nut is screwed into the upper end portion of the anchor bolt passed through the mounting hole, and the nut is fixed into the outer peripheral screw of the earthquake-proof mounting bolt passed through the mounting hole. The seismic reinforcement device is fixed by screwing a nut into an outer peripheral screw of a seismic mounting bolt penetrating the mounting hole with respect to the pillar with the second mounting portion as a column. The seismic reinforcement device is fixed to the bracing portion of the reinforcing metal fitting by a mounting bolt in which the other end of the bracing with one end fixed to the beam is screwed into the mounting hole. In the seismic reinforcement device, the use of reinforcement brackets and seismic mounting bolts provides seismic performance with the function of reinforcing the pillar with respect to the foundation, the hole-down function that reinforces the foundation, foundation and pillar, and the brace connection function. Reinforce.

In addition, the seismic reinforcement device according to the present invention that achieves the above-described object performs seismic reinforcement of an existing building by fixing a reinforcing bracket across a base installed on a foundation and a column erected on the base. . The seismic reinforcement device has a plurality of mounting holes each having a long hole in the length direction and penetrating in the thickness direction, and the first mounting hole on the corner portion side is longer than the other mounting holes. A first mounting portion and a second mounting portion which are formed as orthogonal to each other and have the same length, and a central portion from the tip side along the side edge of the first mounting portion and the second mounting portion. The bracing part which is formed in a generally fan shape by being gradually widened toward the part and is bent and formed with a plurality of attachment holes to integrate the first attachment part and the second attachment part, Opposite the first mounting portion and the second mounting portion that form the cornering portion by forming the corner portion by integrating the opposing ends of the first mounting portion and the second mounting portion. Cut out at the corners to be inserted and through the electrical wiring and piping, and the first mounting And use the entire substantially L-shaped reinforcing brackets comprising a second attachment portion or the guide space to achieve the buffering action of the bracing portion. The seismic reinforcement device has an axial length that is slightly longer than the thickness of the foundation and column, and is approximately the same diameter as the bolt holes formed in these foundations and columns, and a plurality of retaining parts consisting of wedge-shaped projections are integrated on the outer periphery. And a peripheral screw formed in a predetermined axial length range on the other end side of the main body portion, and the retaining portion is bolted by being driven into each bolt hole of the base or the pillar. A plurality of seismic mounting bolts that cut into the inner wall of the wall and prevent it from coming off are used. The seismic reinforcement device is substantially orthogonal to a first fixing portion in which a bolt hole penetrating in the thickness direction is formed corresponding to the mounting hole formed in the first mounting portion of the reinforcing metal fitting, and one end side of the first fixing portion. that a plurality of anchors formed by bending insertion hole is used is overall substantially L-shaped reinforcing bracket member and a second fixing part having a predetermined length which is formed through the thickness direction integrally Te .

In the seismic strengthening device, each seismic mounting bolt is driven into a bolt hole facing the base or the column from the side facing the mounting surface of the reinforcing bracket, and the outer peripheral screw protrudes from the mounting surface of the base or the column. In the seismic reinforcement device, the reinforcing bracket pushes the outer peripheral screw of the seismic mounting bolt through the mounting hole with the second mounting portion passing through the outer peripheral screw of the seismic mounting bolt and presses the outer peripheral screw of the seismic mounting bolt to the first mounting portion. They are put through the mounting holes and placed on the mounting surface of the base to be combined. In the seismic reinforcement apparatus, the reinforcing bracket member is combined by aligning the first mounting hole and the bolt hole on the first mounting part of the reinforcing metal fitting and passing the outer peripheral screw of the earthquake-proof mounting bolt through the bolt hole. In addition, the base end portion is fixed in the anchor fitting insertion hole of the second fixing portion facing the side surface of the foundation through the side surface of the base, and the tip end portion of the anchor bolt protruding from the side surface is penetrated. Let them combine. In the seismic reinforcement device, the reinforcing bracket fixes the second mounting part to the mounting surface by screwing the nut into the outer peripheral screw of the seismic mounting bolt with respect to the column, and the nut to the outer peripheral screw of the earthquake-proof mounting bolt with respect to the base The first mounting portion is fixed to the mounting surface by screwing in. In the seismic reinforcement device, the reinforcing bracket member fixes the first fixing portion to the base via the first mounting portion of the reinforcing bracket by screwing the nut into the outer peripheral screw of the earthquake-proof mounting bolt, and the nut is attached to the tip of the anchor. The second fixing portion is fixed to the side surface of the foundation by screwing in. The seismic reinforcement device is fixed to the bracing portion of the reinforcing bracket with a mounting bolt in which the other end of the bracing with one end fixed to the beam is screwed into the mounting hole. In the seismic reinforcement device, even for existing buildings where it is difficult to newly install anchor bolts on the foundation, the reinforcement function of the pillars against the foundation and the foundation can be obtained by using the reinforcement brackets, earthquake-proof mounting bolts and reinforcement bracket members. Seismic reinforcement is performed with a hole-down function that reinforces the foundation, pillar, and pillar, and a bracing connection function.

According to the seismic reinforcement device according to the present invention, the reinforcing function of the pillar with respect to the base by the reinforcing metal fitting and the seismic mounting bolt, the hole down function for reinforcing the foundation, the base and the pillar integrally, and the bracing connection function are achieved. Therefore, it has a large resistance strength against horizontal and vertical loads that are acted upon when a large earthquake or the like occurs, so that the earthquake resistance can be improved. According to the seismic reinforcement apparatus, the workability can be improved by simply coupling the reinforcing bracket to the anchor bolt having a large variation in the protruding position and the height position.

In addition, according to the seismic reinforcement device according to the present invention, for example, even for an existing building in which it is difficult to newly install anchor bolts on the foundation, by using a reinforcing bracket, a seismic mounting bolt, and a reinforcing bracket member , Column reinforcement function, hole down function that integrates and reinforces the foundation, foundation, and column, and brace connection function, which are applied in the event of a huge earthquake, etc. Enables seismic reinforcement with high resistance to load.

  Hereinafter, the seismic reinforcement apparatus 1 shown in the drawings as an embodiment of the present invention will be described in detail. As shown in FIGS. 1 and 2, the seismic reinforcement device 1 includes a foundation 2, a base 3, and a pillar 4 that are integrated by a reinforcing metal fitting 5, an anchor bolt 6, and a nut 7. It constitutes a specified hole-down structure. In the seismic reinforcement device 1, seismic bolts 8 and nuts 9 are used to fix the reinforcing metal fitting 5 to the base 3 and the column 4. Note that the seismic reinforcement device 1 may use general through bolts and nuts instead of the seismic bolts 8.

  The foundation 2 is formed on site, for example, after assembling a formwork on the ground that has been subjected to appropriate foundation formation processing such as excavation, crushed stone input, or rolling, and after assembling a reinforcing bar not shown in the formwork It consists of a cloth foundation and a solid foundation formed by passing concrete and a predetermined curing period, or a composite foundation thereof. The foundation 2 is assembled with a large number of anchor bolts 6 at predetermined positions when assembling the reinforcing bars, so that each anchor bolt 6 is embedded in the base end portion 6A and the upper end portion 6B has a predetermined length from the installation surface 2A. So that it protrudes. As the foundation 2, for example, a precast type reinforced concrete block manufactured at a factory and carried into the site is also used, and anchor bolts 6 are embedded in each block.

  The foundation 3 is framed on the installation surface 2 </ b> A of the foundation 2, is held horizontally, and is fixed by each anchor bolt 6. As shown in FIG. 2, a mortise groove 10 for standing the pillar 4 is formed in the base 3 so as to open to the upper surface 3A. In the base 3, there are anchor bolt holes 11 that penetrate the respective upper ends 6 </ b> B corresponding to the anchor bolts 6 and bolt holes 12 that penetrate the seismic bolts 8 for fixing the reinforcing metal fittings 5 in the thickness direction. Is formed. As shown in FIGS. 1 and 2, the base 3 is positioned at least in the vicinity of the mortise groove 10 and has an anchor bolt hole 11 formed therein.

  A tenon 13 is formed at the lower end of the column 4, and the tenon 13 is erected on the upper surface 3 </ b> A of the base 3 by fitting the tenon 13 into the tenon groove 10 of the base 3. Although not shown, the column 4 is formed with a mortise groove for assembling a horizontal member such as a beam, a girder, or a torsion at an appropriate position or upper end of the side surface. As shown in FIG. 1 and FIG. 2, at least one bolt hole 14 is formed in the pillar 4 in the vicinity of the tenon 13 and penetrates in the thickness direction. A seismic bolt 8 for fixing the reinforcing metal fitting 5 shared with 3 is penetrated. Note that the base 3 and the pillar 4 are not limited to the mortise joint structure in which the mortise groove 10 and the mortise 13 are fitted to each other, and various joint structures generally used in a conventional wooden structure are employed to be coupled. Of course, it may be.

  The seismic reinforcement device 1 reinforces the base 3 and the column 4 with the reinforcing metal fitting 5. The reinforcing metal fitting 5 is made of a metal material such as a steel material having a predetermined thickness, and is formed integrally by pressing and is subjected to a plating process for rust prevention. As shown in FIG. 3, the reinforcing bracket 5 is bent along the first mounting portion 15 and the second mounting portion 16 that are orthogonal to each other, and the side edge portions of the first mounting portion 15 and the second mounting portion 16. Thus, the first attachment portion 15 and the second attachment portion 16 are formed in an overall L-shape formed by the bracing portion 17 that integrates the first attachment portion 15 and the second attachment portion 16.

  As will be described later, the reinforcing bracket 5 fixes the first mounting portion 15 to the upper surface 3A of the base 3 and the second mounting portion 16 to the side surface 4A of the column 4 orthogonal to the upper surface 3A. For example, the reinforcing bracket 5 is formed by forming the first mounting portion 15 and the second mounting portion 16 in the same shape, thereby appropriately changing the direction of the first mounting portion 15 and fixing the first mounting portion 15 to the pillar 4 and the second mounting portion. It is also possible to fix 16 to the base 3 for use.

  The reinforcing metal fitting 5 has a rectangular plate shape in which the first attachment portion 15 and the second attachment portion 16 have a predetermined length, and a build-up portion 18 is formed by welding or the like between the opposite end portions 15A and 16A. Thus, the mechanical strength is improved by integrating the first mounting portion 15 and the second mounting portion 16. The reinforcing bracket 5 firmly fixes the base 3 and the column 4 by integrating the first mounting portion 15 and the second mounting portion 16 with the build-up portion 18. The reinforcing bracket 5 is formed with a first attachment hole 19A formed of a long hole located in the first attachment portion 15 on the end 15A side and having a long axis in the length direction penetrating in the thickness direction. A second mounting hole 19B consisting of a slightly short elongated hole is formed at a position adjacent to the first mounting hole 19A in the length direction so as to penetrate in the thickness direction, and further adjacent to the second mounting hole 19B in the length direction. A third attachment hole 19 </ b> C made of a further elongated long hole is formed at the position.

  The reinforcing bracket 5 is also formed in the second mounting portion 16 with a first mounting hole 20A formed of a long hole located on the end 16A side and having a long axis in the length direction penetrating in the thickness direction, A second mounting hole 20B consisting of a slightly short elongated hole is formed at a position adjacent to the first mounting hole 20A in the length direction so as to penetrate in the thickness direction, and further adjacent to the second mounting hole 20B in the length direction. A third attachment hole 20 </ b> C made of a further elongated long hole is formed at the matching position.

  The reinforcing metal fitting 5 is not limited to the above-described three mounting holes 19 and 20 formed in the first mounting portion 15 and the second mounting portion 16, but may be at least two or more. . Further, the reinforcing metal fitting 5 may be formed in a round hole without the need to form all the attachment holes 19 and 20 as long holes. However, as will be described later, the reinforcing metal fitting 5 on the first attachment portion 15 side through which the anchor bolt 6 is penetrated. It is preferable that the first mounting hole 19 </ b> A (also considering the first mounting hole 20 </ b> A on the second mounting part 16 side in consideration of changing the orientation) be a long hole.

  The reinforcing metal fitting 5 is integrally formed with a bracing portion 17 that is bent along one side edge portion having a predetermined distance from the end portions 15A and 16A of the first attachment portion 15 and the second attachment portion 16. Is done. The bracing portion 17 is formed in a substantially fan shape as a whole by gradually widening from the front end side of the first mounting portion 15 and the second mounting portion 16 toward the central portion, and the first mounting portion 15 in an orthogonal state to each other. The mechanical strength of the second mounting portion 16 is improved. A substantially triangular guide space portion 21 is formed in the bracing portion 17 by cutting away the facing portions of the first mounting portion 15 and the second mounting portion 16 that form the build-up portion 18. The guide space portion 21 constitutes a space portion that penetrates electrical wiring and piping guided across the joint portion between the base 3 and the pillar 4. Further, the guide space portion 21 absorbs a large force applied via the base 3 and the pillar 4 due to an earthquake or the like, and suppresses a change in the first attachment portion 15, the second attachment portion 16, or the bracing portion 17. Play.

  In the reinforcing metal fitting 5, a connecting hole 22 is formed in the bracing portion 17 so as to penetrate in the thickness direction so as to be located at the wide central portion as shown in FIG. 3. As shown in FIGS. 1 and 2, the reinforcing metal fitting 5 has a mounting bolt 23 fitted into the connection hole 22, and the bracket member 24 is attached to the bracing portion 17 by the mounting bolt 23. As will be described later, the reinforcing metal fitting 5 is fixed to a joint portion between the base 3 and the column 4 and is connected to the upper end portion of the pillar 4 (not shown) and the beam provided at a diagonal position with the joint portion via the bracket member 24. One end of the bracing member 25 that is spanned between the joint portion and the like is fixed to the bracing portion 17. In addition, instead of the bracing member 25, the reinforcing metal fitting 5 may be fixed to the bracing portion 17 with an appropriate reinforcing member such as a brace member.

  The reinforcing metal fitting 5 configured as described above includes a column reinforcing function that reinforces the coupling strength with the column 4 standing on the base 3, a wiring guide function such as electric wiring that is inserted into the guide space 21 after construction, The connecting function of the reinforcing member such as the brace member 25 is provided. In addition, the reinforcing metal fitting 5 has a hole-down function of integrating the foundation 2, the base 3, and the column 4 through the anchor bolt 6 by fixing the anchor bolt 6 to the first mounting portion 15.

  The anchor bolt 6 is the same as that conventionally used, and for example, a round steel material having the same diameter as that of the mounting holes 19 and 20 of the reinforcing metal fitting 5 is used. As shown in FIG. Is bent in an L shape. As will be described later, the anchor bolt 6 is embedded in the base 2 and protrudes from the installation surface 2A, but the height from the installation surface 2A is longer than the thickness of the base 3 and the reinforcing bracket 5. Axis. The anchor bolt 6 is formed with an outer peripheral screw 26 in the upper end portion 6B within a predetermined height range.

  The anchor bolt 6 is penetrated through the anchor bolt hole 11 of the base 3 in a state where the base 3 is installed on the installation surface 2 </ b> A with respect to the foundation 2. The anchor bolt 6 protrudes through the first mounting hole 19A formed in the first mounting portion 15 of the reinforcing bracket 5 whose upper end portion 6B is fixed to the base 3 and the pillar 4, and the nut 7 is attached to the outer peripheral screw 26. Screwed. Since the anchor bolt 6 has the base end 6A embedded in the reinforced concrete foundation 2 as described above, the positional accuracy is slightly worse than the dimensional accuracy of the base 3 and the column 4. Since the anchor bolt 6 has the first mounting hole 19A as a long hole, the positioning operation of the reinforcing bracket 5 is performed within the length range, and the upper end portion 6B can easily protrude from the first mounting hole 19A. It is possible. The anchor bolt 6 is preferably tightened with the nut 7 in a state in which, for example, a well-known spring washer or the like having a locking action is fitted to the outer peripheral screw 26. The nut 7 has a larger diameter than the opening width of the first mounting hole 19A. For example, it is also effective to use a nut with a flange.

  The reinforcing metal fitting 5 is fixed to the base 3 and the column 4 by using a plurality of earthquake-proof bolts 8 and nuts 9 having a wedge function that omits details, for example. Each seismic bolt 8 is driven into the bolt hole 12 formed in the base 3 from the bottom surface 3B side fixed to the installation surface 2A of the foundation 2 and assembled with the tip protruding from the top surface 3A. Each seismic bolt 8 has a main body portion having substantially the same diameter as the bolt hole 12, a plurality of retaining portions formed of wedge-shaped convex portions integrally projecting on the outer peripheral portion of the main body portion, and a peripheral portion at one end of the main body portion. The flange portion is formed so as to project around, and a slightly small-diameter screw portion that is coaxially formed at the other end of the main body portion and is formed with an outer peripheral screw. Each seismic bolt 8 has a main body formed with an axial length substantially equal to the thickness of the base 3 and the column 4, and a threaded portion longer than the thickness of the first mounting portion 15 and the second mounting portion 16 of the reinforcing bracket 5. It is formed on the shaft.

  Each seismic bolt 8 is driven into the bolt hole 12 from the bottom surface 3 </ b> B side with the threaded portion as the tip in the pre-process of installing the base 3 on the foundation 2. Each seismic bolt 8 is attached to the base 3 with the retaining part biting into the inner wall of the bolt hole 12 to prevent the bolt hole 12 from falling off, and the threaded part protruding from the upper surface 3A. In addition, each seismic bolt 8 is also driven into the bolt hole 14 from the side surface facing the side surface 4A, which is a fixed surface to the reinforcing metal fitting 5, and the thread portion protrudes from the side surface 4A. 4 is attached.

  As each seismic bolt 8 is attached to the base 3 and the pillar 4 as will be described later, the threaded portions protruding from the upper surface 3A and the side surface 4A that are orthogonal to each other are fitted into the mounting holes 19 and 20 for reinforcement. The metal fitting 5 is assembled. As each seismic bolt 8 is screwed into a nut 9, the base 3 and the first mounting portion 15 or the column 4 and the second mounting portion 16 are tightened by the nut 9 and the flange portion to reinforce the metal fitting 5. Is fixed across the base 3 and the pillar 4.

  As described above, the seismic bolt 8 is prevented from falling off during transportation or installation even if it is attached to the base 3 or the pillar 4 in advance by the retaining portion formed on the outer periphery of the main body portion biting into the inner walls of the bolt holes 12 and 14. In addition, the reinforcing metal fitting 5 is firmly fixed to the base 3 and the column 4. Note that the seismic bolt 8 is preferably tightened with the nut 9 in a state in which a well-known spring washer or the like having a locking action is fitted to the threaded portion. The nut 9 has a diameter larger than the opening width of the mounting holes 19 and 20, and it is also effective to use a nut with a flange, for example. The seismic bolt 8 is easily aligned with the mounting holes 19 and 20 of the reinforcing bracket 5 because the base 3 and the pillar 4 form the bolt holes 12 and 14 with relatively high dimensional accuracy. Since the mounting holes 19 and 20 are long holes, the positioning can be performed more efficiently.

  In the seismic reinforcement device 1, the reinforcing metal fitting 5 is coupled to the base 3 and the column 4 using the above-described coupling member including the seismic bolt 8 and the nut 9, but is not limited to such a coupling member. Of course. In the seismic reinforcement device 1, for example, a coupling structure in which a nut is screwed to a bolt penetrating a mounting hole formed in the base 3 or the column 4, a cylindrical bolt that is driven into the mounting hole as a seismic bolt 8, and this bolt It may be a coupling structure such as a screw that is screwed into an inner peripheral screw formed in the inner hole.

  In the seismic reinforcement device 1 including the respective members configured as described above, the base 3 is installed on the installation surface 2 </ b> A with respect to the foundation 2. In the seismic reinforcement device 1, the base 3 is installed by passing through the anchor bolt hole 11 the upper end portion 6 </ b> B of the anchor bolt 6 having the base end 6 </ b> A embedded in the foundation 2 and protruding from the installation surface 2 </ b> A. In addition, as described above, the earthquake-resistant bolts 8 are respectively driven into the base 3 in the bolt holes 12 formed so as to face the third mounting holes 19C formed in the first mounting portion 15 of the reinforcing metal fitting 5 in advance. Is attached to protrude from the upper surface 3A. You may make it attach the earthquake-proof bolt 8 to the base 3 also in the bolt hole 12 facing the 2nd attachment hole 19B of the reinforcement metal fitting 5 as needed.

  In the seismic reinforcement device 1, the pillar 4 is erected with the mortise 10 fitted to the mortise 10 with respect to the base 3. Note that the pillar 4 has a bolt hole formed so as to face the first mounting hole 20A and the second mounting hole 20B or the third mounting hole 20C formed in the second mounting portion 16 of the reinforcing metal fitting 5 in advance as described above. The seismic bolt 8 is driven into each 14 and the threaded portion protrudes from the side surface 4A. In the seismic reinforcement device 1, the reinforcing metal fitting 5 is assembled across the upper surface 3 </ b> A of the base 3 and the side surface 4 </ b> A of the column 4 which are orthogonal to each other in this state. In the seismic reinforcement device 1, the reinforcing bracket 5 is assembled with the first mounting portion 15 applied to the upper surface 3 </ b> A of the base 3 and the second mounting portion 16 applied to the side surface 4 </ b> A of the column 4.

  In the seismic reinforcement device 1, the reinforcing metal fitting 5 penetrates the upper end portion 6 </ b> B of the anchor bolt 6 exposed through the base 3 through the first attachment hole 19 </ b> A of the first attachment portion 15 and into the third attachment hole 19 </ b> C. The threaded portion of the seismic bolt 8 is passed through. In the seismic reinforcement device 1, the reinforcing bracket 5 has the first mounting portion 15 in the length range of the first mounting hole 19 so that the second mounting portion 16 is in close contact with the side surface 4 </ b> A of the column 4. It is adjusted and moved along. In the seismic reinforcement device 1, the nut 7 is fitted to the outer peripheral screw 26 of the anchor bolt 6 protruding from the first mounting hole 19 </ b> A on the first mounting portion 15 side of the reinforcing bracket 5, and protrudes from the third mounting hole 19 </ b> C. A nut 9 is fitted to the outer peripheral screw of the seismic bolt 8 to be engaged. On the other hand, in the seismic reinforcement device 1, the nuts 9 are fitted to the outer peripheral screws of the seismic bolt 8 protruding from the mounting hole 20 on the second mounting portion 16 side of the reinforcing metal fitting 5.

  In the seismic reinforcement device 1, a screwing operation of the nut 7 fitted to the anchor bolt 6 and each nut 9 fitted to the earthquake-proof bolt 8 is performed using a predetermined jig. In the seismic reinforcement device 1, the nut 7 is fastened to the anchor bolt 6 so that the reinforcing bracket 5 presses the base 3 against the foundation 2 via the first mounting portion 15 as shown in FIGS. 1 and 2. Is integrated. Therefore, the seismic reinforcement device 1 prevents the base 3 from being lifted from the foundation 2 in response to a large pitching caused by an earthquake, and performs strong reinforcement in the vertical direction.

Further, in the seismic reinforcement device 1, by fixing the nut 9 on the first mounting portion 15 side to the seismic bolt 8, the fixing action via the anchor bolt 6 described above as shown in FIGS. Together, the reinforcing bracket 5 is firmly fixed to the base 3 by the first mounting portion 15 and the seismic bolt 8. In the seismic reinforcement device 1, similarly, by tightening the nut 9 on the second mounting portion 16 side with respect to the seismic bolt 8, the reinforcing bracket 5 is connected by the second mounting portion 16 and the seismic bolt 8 as shown in FIG. It is firmly fixed to the pillar 4 .

  In the seismic reinforcement device 1, as described above, the reinforcing bracket 5 integrally forms the first mounting portion 15 and the second mounting portion 16 via the brace portion 17, so that the base 3 is connected via the reinforcing bracket 5. And the pillar 4 are integrated. In the seismic reinforcement device 1, the base 3 and the pillar 4 are integrated by the substantially L-shaped reinforcing metal fitting 5, so that the pillar 4 can be firmly held against the base 3 even against a large roll due to an earthquake. To ensure a strong reinforcement in the horizontal direction. Moreover, in the earthquake-proof reinforcement apparatus 1, the pillar 3 is reinforced in the vertical direction by reinforcing the base 3 in the vertical direction with respect to the foundation 2 as described above.

  In the seismic reinforcement device 1, the pillars 4 are integrated with the base 3 by a joint structure formed by a tenon joint structure, and the reinforcing metal fitting 5, the earthquake-proof bolt 8, the anchor bolt 6, and the nut are provided in the vicinity of the joint portion. 7, the foundation 2 and the base 3 are firmly integrated. Therefore, in the seismic reinforcement device 1, a hole-down structure in which the foundation 2, the base 3, and the pillar 4 are integrated via the reinforcing metal fitting 5 is configured to improve the seismic resistance against large pitching and rolling caused by an earthquake. To be able to.

  In the seismic reinforcement device 1, the mounting holes 19 and 20 formed in the reinforcing metal fitting 5 are long holes so that the positioning with the anchor bolt 6 and the seismic bolt 8 can be easily performed even on site. Thus, the work of forming a through-hole through which the anchor bolt 6 and the earthquake-resistant bolt 8 are penetrated in the base 3 and the pillar 4 or forming a mounting hole in the metal fitting is unnecessary. Further, in the seismic reinforcement device 1, for example, even when the base 3 or the pillar 4 having a slightly low strength is used, the base 3 and the pillar 4 are firmly integrated by the reinforcing metal fitting 5 or the like, and also to the foundation 2. Since it is firmly integrated, sufficient seismic strength is maintained.

  In the seismic strengthening device 1, a pillar 4 is erected at a predetermined position with respect to the base 3, and then a bridge or the like is bridged between the pillars 4. In the seismic reinforcement device 1, as described above, the column 4 is assembled to the base 3 with a tenon coupling structure and a coupling structure having high mechanical rigidity by the reinforcing metal fitting 5 and the like. Therefore, in the seismic reinforcement device 1, it is possible to improve the safety of the work by suppressing the shaking of the column 4, and to improve the efficiency of the assembling work by easily positioning the beam when assembling. Like that.

  In the seismic reinforcement device 1, the bracing member 25 is assembled after the beam or the like is bridged between the columns 4. However, as described above, the reinforcing bracket 5 also functions as an attachment member for the bracing member 25 or the like. Thus, the base 3 and the pillar 4 are made unnecessary to form a large number of mounting holes for reducing the mechanical strength, so that the earthquake resistance can be improved. In the seismic reinforcement device 1, even when low-cost wood having a slightly low strength is used for the base 3 and the pillar 4, the reinforcing metal fitting 5 is used to assemble with sufficient seismic strength.

  In the seismic reinforcement device 1, the reinforcing metal fitting 5 is attached after the pillar 4 is assembled to the base 3. However, for example, the pillar 4 can be assembled with the reinforcing metal fitting 5 attached to the base 3. is there.

  The seismic reinforcement apparatus 30 shown in FIGS. 5 and 6 as the second embodiment includes a base 3 framed on, for example, an installation surface 2A of the foundation 2 and fixed by an anchor bolt or the like (not shown). 3 is preferably used for an existing wooden building in which a pillar 4 is erected by being joined to a mortise joint structure 3 or the like. The seismic reinforcement device 30 also uses the reinforcing bracket 5 having the same specifications as the above-described seismic reinforcement device 1 and the reinforcing bracket member 31, which will be described in detail later, to integrate the foundation 3 and the column 4 with the foundation 2. I do. Therefore, in the description of the seismic reinforcement device 30 below, the same reference numerals are given to the members corresponding to the members provided in the seismic reinforcement device 1, and the description is omitted.

  The seismic reinforcement device 30 has a structure in which the seismic bolt 8 cannot be installed by being driven into the base 3 or the column 4 from the side facing the mounting surface of the reinforcing bracket 5 as in the above-described seismic reinforcement device 1. Therefore, a retrofitting attachment member 32 is provided on the base 3 or the pillar 4 in place of the seismic bolt 8. For example, a member such as a well-known lag screw bolt or chemical anchor is used as the attachment member 32. The outer peripheral screw 33 is formed on one end side and attached to the base 3 or the pillar 4 with an anchor function.

  In the seismic reinforcement device 30, a plurality of pilot holes are drilled on the upper surface 3 </ b> A of the base 3 by a drill at positions facing the respective mounting holes 19 formed in the first mounting portion 15 of the reinforcing bracket 5. In the seismic reinforcement device 30, the mounting member 32A described above is driven from the upper surface 3A side with respect to the base 3 in a state where the outer peripheral screw 33A protrudes from each lower hole. In the seismic reinforcement device 30, an appropriate adhesive may be filled in the prepared hole as necessary to prevent the attachment member 32 </ b> A from falling off the base 3.

  In the seismic reinforcement device 30, a plurality of pilot holes are drilled by drills on the side surfaces 4 </ b> A of the pillars 4 at positions facing the mounting holes 20 formed in the second mounting portion 16 of the reinforcing bracket 5. In the seismic reinforcement device 30, the mounting member 32 </ b> B described above is driven into the respective holes from the side surface 4 </ b> A to the column 4 and the outer peripheral screw 33 </ b> B is protruded and attached.

  In the seismic reinforcement device 30, the reinforcing metal fitting 5 is fixed across the base 3 and the pillar 4 in the same manner as the above-described seismic reinforcement device 1. In the seismic reinforcement device 30, the reinforcing bracket 5 is assembled by aligning the first mounting portion 15 on the upper surface 3 </ b> A of the base 3 and aligning the first mounting portion 16 with the side surface 4 </ b> A of the column 4. In the seismic reinforcement device 30, the reinforcing metal fitting 5 allows the first attachment hole 19 on the first attachment portion 15 side to pass through the tip of the attachment member 32 </ b> A and the attachment member in the second attachment hole 20 on the second attachment portion 16 side. The tip end portion of 32B is penetrated and nuts 9A and 9B are screwed into the respective outer peripheral screws 33A and 33B to be fixed across the base 3 and the column 4. In the seismic reinforcement device 30, the base 3 and the pillar 4 are firmly fixed by the reinforcing bracket 5, so that the joint portion is prevented from loosening or falling off due to pitching or rolling due to the earthquake, and mechanical rigidity is improved. Improvement is achieved.

  In the seismic reinforcement device 30, since the base 3 is also installed on the installation surface 2A on the foundation 2, the anchor bolt embedded in advance with the upper end protruding from the installation surface 2A as in the above-described seismic reinforcement device 1 6 cannot be provided. Therefore, a plurality of anchor holes 34 are drilled in the foundation 2 by a drill or the like from the side surface 2B exposed to the outside as shown in FIG. Each anchor hole 34 is located on the side of the first attachment hole 19A formed on the first attachment portion 15 of the reinforcing metal fitting 15 on the end 15A side, and is formed side by side in the height direction.

  In the seismic reinforcement device 30, the anchor member 35 is integrated with each anchor hole 34 at the base end portion, and the tip end portion is projected from the side surface 2B in the horizontal direction and embedded. For each anchor member 35, a well-known anchor member such as a chemical anchor or an all anchor having an outer peripheral screw 36 formed at the distal end portion and an anchor portion whose details are omitted at the proximal end portion is used. Note that the anchor member 35 may be firmly fixed to the foundation 2 by filling the anchor hole 34 with an appropriate adhesive or the like.

  In the seismic reinforcement device 30, the reinforcing bracket 5 and the foundation 2 that integrate the base 3 and the pillar 4 are integrated by the reinforcing bracket member 31 as described above. The reinforcing bracket member 31 is also made of a metal material such as a steel material having a predetermined thickness, and is formed integrally by pressing and subjected to a plating process for rust prevention. As shown in FIGS. 5 and 6, the reinforcing bracket member 31 has a substantially L-shape including a first fixing portion 37 and a second fixing portion 38 bent at a substantially right angle from one end side of the first fixing portion 37. It has a shape.

  In the reinforcing bracket member 31, the first fixing portion 37 has a length substantially equal to the width of the first mounting portion 15 of the reinforcing metal fitting 5, and the bolt hole 39 is formed through the thickness direction. In the reinforcing bracket member 31, the bolt hole 39 communicates with the first mounting hole 19 </ b> A in a state where the first fixing portion 37 is placed on the first mounting portion 15 and combined with the reinforcing bracket 5 as described later. The bolt hole 39 is formed to have a hole diameter that allows the attachment member 32 that fixes the reinforcing metal fitting 5 to pass through the base 3 described above.

  In the reinforcing bracket member 31, the second fixing portion 38 has a length sufficiently larger than the thickness of the base 3, and a plurality of anchor fitting insertion holes 40 are formed through the thickness direction. As will be described later, the reinforcing bracket member 31 has the first fixing portion 37 placed on the first mounting portion 15 and combined with the reinforcing metal fitting 5, and the second fixing portion 38 is a base as shown in FIGS. It extends along the side surface 2B of the foundation 2 via the three side surfaces. The reinforcing bracket member 31 is positioned corresponding to each anchor member 35 provided with the base end portion embedded in the foundation 2 with the tip portion protruding from the side surface 2B as described above for each anchor fitting insertion hole 40. Each anchor insertion hole 40 is formed to have a hole diameter that allows the opposite anchor member 35 to pass therethrough.

  Since each anchor member 35 is embedded in the anchor hole 34 drilled in the concrete base 2 as described above, it is difficult to position the tip portion from the side surface 2B with high accuracy. is there. Therefore, the reinforcing bracket member 31 allows each of the anchor fitting insertion holes 40 to be a long hole in the height direction, so that the opposing anchor member 35 can be penetrated even if there is some variation in position.

  In the seismic reinforcement device 30, the base 3 and the pillar 4 are firmly fixed by the reinforcing metal fitting 5 as described above, but the base 3 and the reinforcing metal fitting 5 are firmly attached to the foundation 2 by using the reinforcing bracket member 31. Fix it. That is, in the seismic reinforcement device 30, the first mounting portion 15 of the reinforcing metal fitting 5 allows the mounting member 32 protruding from the upper surface 3 </ b> A of the base 3 to pass through each mounting hole 19. In the seismic reinforcement device 30, the reinforcing bracket 5 and the base 3 are fixed by screwing the nuts 9 into the other mounting members 32A other than the mounting member 32A-1 penetrating the first mounting hole 19A on the end 15A side.

  In the seismic reinforcement device 30, the reinforcing bracket member 31 is attached to the first fixing portion 37 on the first mounting portion 15 of the reinforcing bracket 5 and the mounting member 32 </ b> A- passing through the first mounting hole 19 </ b> A through the bolt hole 39. The tip of 1 is penetrated. In this state, the reinforcing bracket member 31 extends such that the second fixing portion 38 faces the side surface 2B of the foundation 2 along the side surface of the base 3. In the reinforcing bracket member 31, the tip end portions of the anchor members 35 protruding from the side surfaces 2 </ b> B pass through the respective anchor fitting insertion holes 40 formed in the second fixing portion 38. The reinforcing bracket member 31 is combined with a washer 41 on the first fixing portion 37 so as to be fitted to the mounting member 32A-1.

  In the seismic reinforcement device 30, the first fixing portion 37 of the reinforcing bracket member 31 is mounted on the first mounting portion 15 of the reinforcing bracket 5 by screwing the nut 9A-1 into the outer peripheral screw 33A-1 of the mounting member 32A-1. Fixed. In the seismic reinforcement device 30, the second fixing portion 38 of the reinforcing bracket member 31 is fixed to the side surface 2 </ b> B of the foundation 2 by screwing the nut 42 into the outer peripheral screw 36 of each anchor member 35. In the seismic reinforcement device 30, the reinforcing bracket member 31 thereby presses the base 3 against the foundation 2 via the reinforcing metal fitting 5 to integrate them. Therefore, the seismic reinforcement device 30 prevents the base 3 from being lifted from the foundation 2 against a large pitching caused by an earthquake, so that strong reinforcement in the vertical direction is performed.

  In the seismic reinforcement device 30, the base 4 is integrated with the base 3 by the reinforcing bracket member 31 together with the reinforcing metal fitting 5 in the vicinity of the connecting portion, and the pillar 4 is integrated with the base 3 by the joint structure by the tenon joint structure. The base 3 is firmly integrated. Therefore, in the seismic reinforcement device 1, a hole-down structure in which the foundation 2, the base 3, and the pillar 4 are integrated via the reinforcing metal fitting 5, the reinforcing bracket member 31, and the like is configured for an existing wooden building, Improve earthquake resistance against large pitching and rolling caused by earthquakes.

  Needless to say, the seismic reinforcement device 30 is not limited to the structure described above. In the seismic reinforcement device 30, for example, the reinforcing bracket member 31 forms the first fixing portion 37 wide enough to straddle the mounting holes 19 of the reinforcing metal fitting 5, and the plurality of mounting members 32 are fixed by the nut 9, The mechanical strength can be further improved by fixing a plurality of anchor members 35 embedded in the base 2 in the horizontal direction as well as in the height direction to the second fixing portion 38.

  In the seismic reinforcement devices 1 and 30 described above, the reinforcing metal fitting 5 in which the connection hole 22 for fixing the bracket member 24 for attaching the bracing member 25 with the mounting bolt 23 is formed in the bracing portion 17 is used. It is not limited to the metal fitting 5. In the seismic reinforcement devices 1 and 30, as shown by a chain line in FIG. 7, a wooden bracing member 50 whose opposite ends are cut so as to abut against the base 3 and the pillar 4 may be combined. The bracing member 50 is fixed to the base 3 and the column 4 by a reinforcing metal fitting 51.

  Since the reinforcing metal fitting 51 has the same basic configuration as that of the reinforcing metal fitting 5 described above, the description thereof is omitted by attaching the same reference numerals to the corresponding portions. As shown in FIG. 7, a large number of screw holes 52 are formed in the reinforcing member 51 in place of the connection holes 22 or together with the connection holes 22. The reinforcing metal fitting 51 has a brace member 50 strutted between the base 3 and the pillar 4 at the end thereof, and a screw (not shown) is driven into each screw hole 52, whereby the base 3 and the pillar 4 are The brace member 50 is fixed firmly.

  Note that the reinforcing metal fitting 51 is formed by arranging the screw holes 52 at appropriate positions in order to correspond to the bracing members 50 that are combined at different angles across the base 3 and the pillars 4. Of course, the reinforcing metal fitting 51 is formed with the connection hole 22 and a large number of screw holes 52, so that the mechanical strength of the bracing portion 17 is somewhat lowered, but a sufficiently large seismic characteristic is maintained. When the wooden bracing member 50 is directly assembled, the reinforcing metal fitting 51 functions as a part that exclusively acts as a buffer because the guide space portion 21 is blocked and the piping or the like cannot be conducted.

It is a principal part perspective view of the earthquake-proof reinforcement apparatus shown as embodiment. It is principal part sectional drawing of an earthquake-proof reinforcement apparatus. It is a perspective view of the reinforcement metal fitting used for a seismic reinforcement apparatus. It is a principal part side view of the anchor bolt used for a seismic reinforcement apparatus. It is a principal part perspective view of the earthquake-proof reinforcement apparatus shown as 2nd Embodiment. It is principal part sectional drawing of the seismic reinforcement apparatus. It is a perspective view of the other reinforcement metal fitting used for an earthquake-proof reinforcement apparatus. It is a principal part perspective view of the conventional seismic reinforcement apparatus.

Explanation of symbols

  1 Seismic reinforcement device, 2 foundation, 3 foundation, 4 columns, 5 reinforcement bracket, 6 anchor bolt, 7 nut, 8 earthquake resistant bolt, 9 nut, 10 mortise, 11 anchor bolt hole, 12 bolt hole, 13 mortise, 14 bolt Hole, 15 First mounting portion, 16 Second mounting portion, 17 Bracing portion, 18 Overlaying portion, 19 Mounting hole, 20 Mounting hole, 21 Guide space portion, 22 Connecting hole, 23 Mounting bolt, 24 Bracket member, 25 Bracing Member, 26 outer peripheral screw, 30 seismic reinforcement device, 31 reinforcing bracket member, 32 mounting member, 33 outer peripheral screw, 34 anchor hole, 35 anchor member, 36 outer peripheral screw, 37 first fixing portion, 38 second fixing portion, 39 bolt Hole, 40 anchor insertion hole, 50 bracing member, 51 reinforcing bracket, 52 screw hole

Claims (2)

On the foundation provided with anchor bolts that are embedded in the base end and protruded at a predetermined height from the upper surface, the base is installed through the upper end from the bolt hole formed facing the anchor bolt. In a seismic reinforcement device that performs seismic reinforcement by standing pillars on a base and fixing reinforcing brackets across these bases and pillars,
A plurality of mounting holes, each having a long axis in the length direction and penetrating in the thickness direction, are formed, and the first mounting hole on the corner side is formed as a long-axis hole rather than the other mounting holes. And the first and second mounting portions formed to have the same length, and gradually from the front end side toward the central portion along the side edge portions of the first and second mounting portions. By making the width wide, the whole is substantially fan-shaped and bent, and a plurality of mounting holes are provided to integrate the first mounting portion and the second mounting portion, and the first bracing portion The built-up portion that forms the corner portion by integrating the opposing end portions of the mounting portion and the second mounting portion, and the first and second mounting portions that form the built-up portion of the bracing portion Notches are formed in the corners facing each other to penetrate electrical wiring and piping Both the overall generally L-shaped reinforcing brackets consisting of a guide space to achieve the buffering action of the first mounting portion and the second mounting portion or the brace unit,
A plurality of retaining parts consisting of wedge-shaped projections on the outer periphery that have a shaft length that is slightly longer than the thickness of the foundation and pillars, and approximately the same diameter as the bolt holes formed in these foundations and pillars. And the outer peripheral screw formed in a predetermined axial length range on the other end side of the main body, and the retaining portion is driven into the bolt holes of the base and the pillar. A plurality of seismic mounting bolts that bite into the inner wall of the bolt hole and prevent it from coming off are used,
The seismic mounting bolts are driven into the bolt holes facing the base or the column from the side facing the mounting surface of the reinforcing bracket, and the outer peripheral screw protrudes from the mounting surface of the base or the column. Let
In the state in which the reinforcing bracket presses the outer peripheral screw of the seismic mounting bolt through the mounting hole and presses it against the mounting surface of the column, the first mounting portion of the seismic mounting bolt The outer peripheral screw is passed through the mounting hole and placed on the mounting surface of the base, combined,
The first mounting portion is positioned with respect to the foundation and the base so as to correspond to the corner portion, and a base end portion is embedded in the base, and the first mounting portion of the first mounting portion is inserted through the bolt hole of the base. 1 A nut is screwed into the upper end of the anchor bolt passed through the mounting hole, and fixed by screwing the nut into the outer peripheral screw of the earthquake-proof mounting bolt passed through the mounting hole.
Fixing the second mounting portion to the column by screwing a nut into the outer peripheral screw of the earthquake-proof mounting bolt that penetrates the mounting hole;
By fixing the other end side of the bracing with one end side fixed to the beam to the bracing portion with a mounting bolt screwed into the mounting hole,
The reinforcing metal fitting and the seismic mounting bolts provide a function of reinforcing the pillar with respect to the base, a hole-down function that integrally reinforces the foundation, the base, and the pillar, and a bracing connection function. A featured seismic reinforcement device. In the seismic reinforcement device that performs seismic reinforcement of existing buildings by fixing reinforcement brackets straddling the foundation installed on the foundation and the pillar erected on this foundation,
A plurality of mounting holes, each having a long axis in the length direction and penetrating in the thickness direction, are formed, and the first mounting hole on the corner side is formed as a long-axis hole rather than the other mounting holes. And the first and second mounting portions formed to have the same length, and gradually from the front end side toward the central portion along the side edge portions of the first and second mounting portions. By making the width wide, the whole is substantially fan-shaped and bent, and a plurality of mounting holes are provided to integrate the first mounting portion and the second mounting portion, and the first bracing portion The built-up portion that forms the corner portion by integrating the opposing end portions of the mounting portion and the second mounting portion, and the first and second mounting portions that form the built-up portion of the bracing portion Notches are formed in the corners facing each other to penetrate electrical wiring and piping Both the overall generally L-shaped reinforcing brackets consisting of a guide space to achieve the buffering action of the first mounting portion and the second mounting portion or the brace unit,
A plurality of retaining parts consisting of wedge-shaped projections on the outer periphery that have a shaft length that is slightly longer than the thickness of the foundation and pillars, and approximately the same diameter as the bolt holes formed in these foundations and pillars. And the outer peripheral screw formed in a predetermined axial length range on the other end side of the main body, and the retaining portion is driven into the bolt holes of the base and the pillar. A plurality of seismic mounting bolts that bite into the inner wall of the bolt hole and prevent it from coming off;
A first fixing part in which a bolt hole penetrating in the thickness direction corresponding to the mounting hole formed in the first mounting part of the reinforcing metal fitting is formed, and is integrally orthogonal to one end side of the first fixing part. A generally L-shaped reinforcing bracket member comprising a second fixing portion having a predetermined length formed by bending a plurality of anchor fitting insertion holes in the thickness direction,
The seismic mounting bolts are driven into the bolt holes facing the base or the column from the side facing the mounting surface of the reinforcing bracket, and the outer peripheral screw protrudes from the mounting surface of the base or the column. Let
The reinforcing bracket presses the outer peripheral screw of the seismic mounting bolt through the mounting hole through the second mounting portion and presses against the mounting surface of the column, and the first mounting portion is pressed against the outer periphery of the seismic mounting bolt. A screw is passed through the first mounting hole and placed on the mounting surface of the base, combined,
The reinforcing bracket member aligns the first mounting hole and the bolt hole on the first mounting portion of the reinforcing bracket, and the outer peripheral screw of the earthquake-proof mounting bolt is used as the bolt hole. The base end portion is fixed in the base to the anchor fitting insertion hole of the second fixing portion opposed to the side surface of the foundation through the side surface of the base, and the distal end portion protrudes from the side surface. Combine the tip of the anchor bolt that has been passed through,
The reinforcing bracket fixes the second mounting portion to the mounting surface by screwing a nut into the outer peripheral screw of the earthquake-proof mounting bolt with respect to the column, and the earthquake-proof mounting bolt with respect to the base. The first mounting portion is fixed to the mounting surface by screwing a nut into the outer peripheral screw,
The reinforcing bracket member fixes the first fixing portion to the base via the first mounting portion of the reinforcing bracket by screwing a nut into the outer peripheral screw of the earthquake-proof mounting bolt, and the tip of the anchor The second fixing part is fixed to the side surface of the foundation by screwing a nut into the part,
By fixing the other end side of the brace that fixes one end side to the beam to the bracing portion of the reinforcing bracket with a mounting bolt screwed into the mounting hole,
The reinforcing metal fitting, the seismic mounting bolt, and the reinforcing bracket member, the reinforcing function of the pillar with respect to the base, a hole down function that integrally reinforces the foundation, the base, and the pillar, and a bracing connection function; Retrofit apparatus characterized by is exhibited.

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