Earthquake-resistant reinforcement brackets

Abstract

To provide an earthquake-resistant reinforcing metal fitting capable of preventing bias in the force generated at the connection between the outer surface of a structural member of a building and the earthquake-resistant reinforcing metal fitting when a brace is pulled. [Solution] The earthquake-resistant reinforcement bracket is attached to a structural member 520 of a building and comprises a fixing part 10 to which the end sides of a pair of braces 20 which are fixed to the outer surface 520a of the structural member 520 and arranged crossing each other are connected, the fixing part 10 comprises a base part 11 fixed to the outer surface 520a of the structural member 520, a brace receiver bottom part fixed to the base part 11, and a brace receiver wall part erected from the brace receiver bottom part, having a brace insertion hole through which the brace passes and to which one end of the brace 20 is connected, the brace insertion hole being positioned toward the center of the brace receiver bottom part when viewed from the direction in which the brace 20 is inserted.

Description

[Technical field]

[0001] This invention relates to an earthquake-resistant reinforcement bracket that is installed on the structural members of a building. [Background technology]

[0002] Conventionally, when reinforcing a building that has structural members such as a base on a foundation, columns erected on the base, and beams connected to the columns, the joints of the opposing structural members are connected with braces, which improves the building's strength against lateral shaking.

[0003] As an earthquake-resistant reinforcement fitting for such earthquake reinforcement, the inventor has proposed a base portion which is fixed to the outer surface of a structural member of a building at a fixing portion where both ends of a pair of braces are connected, the base portion having a base bottom formed in a disk shape, and a base wall portion which extends from the outer edge of the base bottom in a direction perpendicular to the outer surface and is formed in a cylindrical shape, a breath receiver bottom portion which is fixed to the structural member across the base bottom, and a breath receiver wall portion which protrudes from near the outer edge of the breath receiver bottom in a direction perpendicular to the outer surface and has a breath insertion hole through which the breath is inserted, the breath receiver portion being inserted into the inside of the base wall portion and fixed to the base portion at any position relative to the base portion by the base fixing portion, making it possible to adjust the distance between the outer surface and the breath insertion hole (see Patent Document 1).

[0004] With such an earthquake-resistant reinforcement bracket, the distance between the outer surface of the structural member and the brace can be adjusted. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2019-124085 A Summary of the Invention [Problem to be solved by the invention]

[0006] Incidentally, in the earthquake-resistant reinforcement metal fitting of Patent Document 1, when the brace is pulled, the tensile force from the brace is received by the brace receiving wall part protruding from near the outer edge of the brace receiving bottom. As a result, force is applied near the outer edge of the fixed part (brace receiving bottom), and an uneven force is applied to the base bottom part fixed to the outer surface of the structural member of the building. Therefore, when the brace is pulled, an uneven force may be applied to the connection part between the outer surface of the structural member of the building and the earthquake-resistant reinforcement metal fitting.

[0007] The purpose of this invention is to provide an earthquake-resistant reinforcement bracket that can prevent a bias in force that occurs at the connection between the outer surface of a structural component of a building and the earthquake-resistant reinforcement bracket when the brace is pulled. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides the following earthquake-resistant reinforcement bracket.

[0009] (1) A seismic reinforcement bracket that is installed on the structural members of a building, The structural member is fixed to an outer surface thereof, and a fixing portion is provided to which end sides of a pair of braces arranged to cross each other are connected, The fixing portion is a base portion secured to the outer surface of the structural member; A breath receiving part having a breath receiving bottom part fixed to the base part, and a breath receiving wall part standing from the breath receiving bottom part, having a breath insertion hole through which the breath is inserted, and to which one end of the breath is connected, The brace insertion hole is an earthquake-resistant reinforcement bracket that is arranged toward the center of the brace receiving bottom when viewed from the direction in which the brace is inserted.

[0010] According to the configuration of (1), the earthquake-resistant reinforcement metal fitting is fixed to the outer surface of the structural member of the building and has a fixing part to which the end sides of a pair of braces arranged to cross each other are connected. Here, the "structural member" in this device includes the foundation installed on the foundation of the building, the column erected on the foundation, and the beam hung on the column.

[0011] The fixed portion includes a base portion and a breath receiving portion. The fixed portion includes a base portion and a breath receiving portion. The base portion is fixed to an outer surface of the structural member. The breath receiving portion has a breath receiving bottom portion and a breath receiving wall portion. The breath receiving bottom portion is fixed to the base portion. The breath receiving wall portion stands upright from the breath receiving bottom portion, and has a breath insertion hole through which the breath is inserted, and one end of the breath is connected to the breath receiving wall portion. The brace insertion hole is disposed toward the center of the brace receiving bottom portion when viewed from the direction in which the brace is inserted.

[0012] According to this configuration, the brace insertion hole through which the brace is inserted and for connecting one end of the brace to the fixed part is located on the center side of the bottom of the brace receiver, so that when the brace is pulled, the force can be transmitted from the center side of the bottom of the brace receiver to the base part fixed to the outer surface of the structural member. This makes it possible for the force to be received on the center side, rather than on the end part of the base part fixed to the outer surface of the structural member, when the brace is pulled. Therefore, it is possible to provide an earthquake-resistant reinforcement bracket that can prevent a bias in force that occurs at the connection between the outer surface of a structural component of a building and the earthquake-resistant reinforcement bracket when the brace is pulled.

[0013] (2) The breath receiving wall portion is A first wall portion in which the brace insertion hole is formed and facing the direction in which the brace is inserted; The earthquake-resistant reinforcement bracket according to claim 1, further comprising: a second wall portion connected to the first wall portion and extending from both ends of the first wall portion in a direction perpendicular to the first wall portion.

[0014] According to the configuration of (2), the breath receiving wall portion includes a first wall portion and a second wall portion. The first wall portion has a breath insertion hole formed therein and faces the direction in which the breath is inserted. The second wall portion is connected to the first wall portion and extends from both ends of the first wall portion in a direction perpendicular to the first wall portion.

[0015] With this configuration, the brace receiving wall portion, which is connected to the brace and receives the force when the brace is pulled, is composed of a first wall portion facing the direction in which the brace is inserted, and a second wall portion extending in a direction perpendicular to the first wall portion, thereby improving the rigidity of the brace receiving wall portion. As a result, when the brace is pulled, the force received by the first wall portion can be reliably transmitted via the brace receiving bottom portion to the base portion fixed to the outer surface of the structural member. Effect of the Invention

[0016] According to the present invention, it is possible to provide an earthquake-resistant reinforcement bracket that can prevent a bias in force that occurs at the connection between the outer surface of a structural component of a building and the earthquake-resistant reinforcement bracket when the brace is pulled. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a diagram showing the state in which an earthquake-resistant reinforcement bracket 1 according to an embodiment of the present invention is applied to a building 500. [Diagram 2] FIG. 2 is a perspective view of a fixing portion 10 according to the embodiment. [Diagram 3] FIG. 2 is an exploded perspective view of the fixing portion 10 according to the embodiment. [Figure 4] FIG. 2 is a perspective view of a base portion 11 according to the embodiment. [Diagram 5] FIG. 2 is a perspective view of the breath receiving portion 12 according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] <Configuration of earthquake-resistant reinforcement bracket 1> The configuration of an earthquake-resistant reinforcing bracket 1 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a state in which an earthquake-resistant reinforcement bracket 1 according to an embodiment of the present invention is applied to a building 500. As shown in FIG.

[0019] In the building 500, a structural member 520 is provided on a foundation 510 provided on the ground, and an exterior wall material 530 is attached to an outer surface 520a of the structural member 520. The structural member 520 includes a base 521 provided on the foundation 510, a column 522 erected on the base 521, and a beam 523 spanned by the column 522. In the description of this embodiment, the joint between the base 521 and the column 522 and the joint between the column 522 and the beam 523 are referred to as a joint 525. The earthquake-resistant reinforcing metal fittings 1 may be provided directly on the outer surface 520a of the structural member 520, or may be provided indirectly on the outer surface 520a of the structural member 520 from above the exterior wall material 530 via the exterior wall material 530.

[0020] The earthquake-resistant reinforcing bracket 1 comprises a plurality of fixing parts 10 fixed to the outer surface of the structural member 520 to which the exterior wall material 530 is attached, and a pair of braces 20 arranged crossing each other and each end of which is connected to the pair of fixing parts 10. The plurality of fixing parts 10 may be fixed to any position of the structural member 520, but it is preferable to fix them to the joints 525.

[0021] In this embodiment, the fixed portion 10 is fixed to the base 521 and the beam 523 on the axis of two adjacent pillars 522, respectively. FIG. 2 is a perspective view of the fixing portion 10 according to the embodiment, and FIG. 3 is an exploded perspective view of the fixing portion 10 according to the embodiment.

[0022] The fixing part 10 includes a base part 11 fixed to an outer surface 520a of the structural member 520, a breath receiving part 12 disposed inside the base part 11 and to which the breath 20 is fixed, and a protection part 13 protecting the connection part between the base part 11 and the structural member 520. The fixing part 10 may also include a cover part (not shown) that covers at least a part of the base part 11 and the breath receiving part 12.

[0023] FIG. 4 is a perspective view of the base portion 11 according to the embodiment. The base portion 11 has a base bottom portion 111 , a base wall portion 112 , and a base fixing portion 113 .

[0024] The base bottom 111 is fixed to the outer surface 520a (see FIG. 3) of the structural member 520, has a plate shape, and is formed in a circular shape when viewed from the front (the direction facing the outer surface 520a). Note that the base bottom 111 is not limited to a circular shape when viewed from the front, and can be any shape such as a square. In addition, the base bottom 111 has a base bottom protrusion 111 a that protrudes outward from the base wall 112 .

[0025] The base bottom protrusion 111a has a plurality of base portion fixing holes 111b (circular portions of the base bottom protrusion 111a shown in FIG. 4) formed along the outer periphery of the base bottom 111, through which fixing members (e.g., screws or bolts) for fixing the base portion 11 to the structural member 520 are inserted. The multiple base portion fixing holes 111b may be arranged at predetermined intervals along the outer periphery of the base bottom portion 111, or may be formed in a concentrated manner in a portion of the base bottom portion 111 where a greater tensile load is applied.

[0026] The base wall 112 extends from the base bottom 111 in a direction perpendicular to the outer surface 520a of the structural member 520 and is formed in a cylindrical shape. The base wall 112 is notched from the tip toward the base end side fixed to the base bottom 111, and a notch 112a through which the brace 20 is inserted is formed. The base wall 112 is notched from the tip toward the base end side fixed to the base bottom 111 at a position opposite the notch 112a across the center of the base bottom 111, and a notch 112b through which a tool for tightening the nut 22 (see FIG. 5 described later) of the brace 20 can be inserted is formed. In this embodiment, the base wall 112 is formed in a cylindrical shape, but is not limited to this, and can be any shape such as a rectangular cylindrical shape when viewed from the front as long as it is a cylindrical shape.

[0027] The base fixing part 113 has a base end fixed to the base bottom part 111, extends from the base bottom part 111 in the direction in which the base wall part 112 extends, and has a bolt part 113a with a screw thread formed thereon, and a nut part 113b that screws into the bolt part 113a. A plurality of base fixing parts 113 are provided on the inside of the base wall part 112, and may be arranged at a predetermined interval, or may be formed densely in a portion where the brace receiving part 12 is subjected to a greater tensile load (for example, in the vicinity of the notch 112a where the brace 20 is arranged). The number of base fixing parts 113 is not limited to a plurality, and for example, only one may be provided as long as a predetermined strength is ensured.

[0028] The bolt portion 113a is fixed to the base bottom portion 111, for example, by screwing the base end side into a nut welded to the base bottom portion 111.

[0029] For example, two nut portions 113b are provided on one bolt portion 113a. In this case, the breath receiving portion 12 is fixed to the base portion 11 by clamping a breath receiving bottom portion 121 of the breath receiving portion 12 described later between the two nut portions 113b.

[0030] The base fixing part 113 fixes the breath receiving part 12 to the base part 11 at an arbitrary position relative to the base part 11. In detail, by changing the position of the nut part 113b of the bolt part 113a (the distance of the bolt part 113a from the base bottom part 111), the position of the breath receiving part 12 relative to the base part 11 (the distance of the breath receiving part 12 from the outer surface 520a of the structural member 520) can be adjusted.

[0031] FIG. 5 is a perspective view of the breath receiving portion 12 according to the embodiment. The breath receiving portion 12 has a breath receiving bottom portion 121 and a breath receiving wall portion 122 .

[0032] The breath receiver bottom 121 is formed in a plate shape (for example, a disk shape) that is substantially the same shape as the portion surrounded by the base wall portion 112 (see FIG. 4), and is fixed to the base portion 11. In the breath receiver bottom 121, at a position corresponding to the position where the base fixing portion 113 is disposed in a state where the breath receiver 12 is inserted inside the base wall portion 112, an insertion hole 121a is formed with an inner diameter through which the bolt portion 113a of the base fixing portion 113 can be inserted but the nut portion 113b cannot be inserted.

[0033] The breath receiving wall portion 122 stands upright from the breath receiving bottom portion 121, and has a breath insertion hole 122a through which the breath 20 passes, and is connected to one end of the breath 20. The breath receiving wall portion 122 includes a first wall portion 122A and a second wall portion 122B.

[0034] The first wall portion 122A has a brace insertion hole 122a formed therein and faces the direction in which the brace 20 is inserted. The first wall portion 122A is disposed on the center side of the brace receiving bottom portion 121 when viewed from the direction in which the brace 20 is inserted. As a result, the brace insertion hole 122a is disposed on the center side of the brace receiving bottom portion when viewed from the direction in which the brace 20 is inserted.

[0035] The second wall portion 122B is connected to the first wall portion 122A and extends from both ends of the first wall portion 122A to near the outer edge of the breath receiving bottom portion 121 in a direction perpendicular to the first wall portion 122A.

[0036] 3, the breath receiver 12 is inserted into the base wall 112 with this configuration. At this time, the bolt 113a of the base fixing part 113 is inserted into the insertion hole 121a of the breath receiver bottom 121, and the breath receiver bottom 121 abuts against the first nut 113b whose distance from the base bottom 111 has been adjusted. Then, in this state, the other nut 113b is screwed onto the bolt 113a, and the breath receiver bottom 121 is sandwiched between the two nut parts 113b.

[0037] The protective portion 13 has a plate shape and is formed in a circular shape when viewed from the front (the direction facing the outer surface 520a). The protective portion 13 is formed with an outer diameter larger than the outer diameter of the base bottom portion 111 when viewed from the front. The protective portion 13 also has a protective portion hole 13a in a circular shape when viewed from the front at its center. The protective portion hole 13a is formed with an outer diameter larger than the outer diameter of the base wall portion 112 when viewed from the front.

[0038] With this configuration, the protective part 13 is attached to the base part 11 so that the base wall part 112 is inserted into the protective part hole 13a and covers the base bottom protrusion part 111a with the base part 11 attached to the structural member 520. The gap between the outer edge of the protective part 13 and the outer surface 520a is sealed.

[0039] Returning to FIG. 5, the brace 20 includes a rod-shaped body 21 having a screw thread formed at least on both ends, and a nut 22 that screws into the rod-shaped body 21 on both ends of the rod-shaped body 21. The rod-shaped body 21 is inserted into a brace insertion hole 122a formed in the first wall portion 122A of the brace receiving wall portion 122 of the brace receiving portion 12 at both ends. The nut 22 is formed with an outer diameter larger than the inner diameter of the brace insertion hole 122a, and is screwed onto the end of the rod-shaped body 21 inserted into the brace insertion hole 122a. In addition, by providing a spring washer between the first wall portion 122A and the nut 22, it is possible to apply a predetermined tension to the rod-shaped body 21, and the tension of the rod-shaped body 21 can be prevented from loosening.

[0040] <How to install earthquake-resistant reinforcement bracket 1> Next, a procedure for attaching the earthquake-resistant reinforcement bracket 1 to the building 500 will be described. In the description of this embodiment, a case where the earthquake-resistant reinforcement bracket 1 is attached between a certain column 522 and another column 522 will be described. First, the base parts 11 of the fixing part 10 are arranged at four joints 525, namely, the joint 525 between the base 521 and the certain column 522, the joint 525 between the certain column 522 and the beam 523, the joint 525 between the base 521 and the other column 522, and the joint 525 between the other column 522 and the beam 523. Then, the orientations of the base parts 11 arranged at the joint 525 between the base 521 and the certain column 522 and the base parts 11 arranged at the joint 525 between the other column 522 and the beam 523 are aligned, and these base parts 11 are fixed to the structural member 520. Furthermore, the orientation of the base portion 11 arranged at the joint 525 between the foundation 521 and another pillar 522 and the base portion 11 arranged at the joint 525 between the pillar 522 and the beam 523 are aligned, and these base portions 11 are fixed to the structural member 520. Here, aligning the orientation of the two base portions 11 specifically means, for example, rotating and adjusting the base portions 11 so that the notches 112a formed in the two base portions 11 face each other.

[0041] Next, the protective part 13 is attached to the base part 11 by inserting the base wall part 112 into the protective part hole 13a and covering the base bottom protrusion part 111a.

[0042] Next, the position of the first nut portion 113b in the base fixing portion 113 is adjusted according to the thickness of the exterior wall material 530 etc. (so that the brace 20 does not come into contact with the exterior wall material 530), the brace receiver 12 is inserted into the inside of the base wall portion 112, the bolt portion 113a of the base fixing portion 113 is inserted into the insertion hole 121a of the brace receiver bottom portion 121, and the brace receiver bottom portion 121 is abutted against the adjusted first nut portion 113b. Then, the other nut portion 113b is screwed onto the bolt portion 113a, and the brace receiver bottom portion 121 is sandwiched between the two nut portions 113b.

[0043] Next, the end of the rod-shaped body 21 of the brace 20 is inserted into the brace insertion hole 122a formed in the first wall portion 122A of the brace receiving wall portion 122 of the brace receiving portion 12, and the nut 22 is screwed onto the end of the rod-shaped body 21. The nut 22 is rotated to apply a predetermined tension to the brace 20.

[0044] Finally, the gap between the outer edge of the protective portion 13 and the outer surface 520a is sealed, the base portion 11 and the breath receiving portion 12 are covered with a cover portion, and a waterproofing treatment is performed between the cover portion and the exterior wall material 530.

[0045] The present invention is not limited to the above-described embodiment, and modifications and improvements within the scope of the invention that can achieve the object of the invention are included in the present invention. [Explanation of symbols]

[0046] 1 Earthquake-resistant reinforcement brackets 10 Fixed part 11 Base 12 Bracket 13 Protection part 13a Protective hole 20 Breath 21 Rod-shaped body 22 Nut 111 Bottom of base 111a Base bottom protrusion 111b Base fixing hole 112 Base wall 112a Notch 112b Notch 113 Base fixing part 113a Bolt section 113b Nut part 121 Breath holder bottom 121a Insertion hole 122 Breath receiving wall 122A 1st wall section 122B 2nd wall section 122a Breath insertion hole 500 buildings 510 Basics 520 Structural members 520a Exterior 521 Foundation 522 Pillars 523 Beam 525 Joint 530 Exterior wall materials

Claims

1. A seismic reinforcement bracket provided to a structural member of a building, The structural member is fixed to an outer surface thereof, and a fixing portion is provided to which end sides of a pair of braces arranged to cross each other are connected, The fixing portion is a base portion secured to the outer surface of the structural member; A breath receiving part having a breath receiving bottom part fixed to the base part, and a breath receiving wall part standing from the breath receiving bottom part, having a breath insertion hole through which the breath is inserted, and to which one end of the breath is connected, The brace insertion hole is an earthquake-resistant reinforcement bracket that is arranged toward the center of the brace receiving bottom when viewed from the direction in which the brace is inserted.

2. The breath receiving wall portion is A first wall portion in which the brace insertion hole is formed and facing the direction in which the brace is inserted; 2. The earthquake-resistant reinforcement bracket according to claim 1, further comprising: a second wall portion connected to the first wall portion and extending from both ends of the first wall portion in a direction perpendicular to the first wall portion.

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