Framework reinforcement structure

Abstract

To improve workability at construction sites while ensuring reinforcement effect of a framework even when large seismic forces act on a building.SOLUTION: A framework reinforcement structure for reinforcing a framework of a building comprises: at least one dividing member that extends inside the framework along a vertical direction and divides the inside of the framework into a plurality of regions in a front view of the framework; and at least one wooden brace that extends along a diagonal direction in either one of a pair of adjacent regions out of the plurality of regions inside the framework.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a structure reinforcement structure for reinforcing the framework of a steel-frame building.

Background Art

[0002] As an example of the technology related to the structure reinforcement structure, Patent Document 1 discloses providing a pair of connecting parts facing each other on a structure and arranging a wooden brace between the pair of connecting parts. According to the configuration of this Patent Document 1, for example, when an earthquake occurs, if the distance between the pair of connecting parts becomes narrower due to the shear deformation of the structure, the connecting part presses the tip surface of the wooden brace, and a compressive force is transmitted to the wooden brace. Then, due to the resistance of the wooden brace to this compressive force, the shear deformation amount of the structure is reduced.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the technology described in Patent Document 1, since the wooden braces are provided throughout the entire interior of the structure, the constructability at the site is low.

[0005] The present disclosure has been made in view of the above problems, and an object thereof is to provide a structure reinforcement structure that can improve the constructability at the site while ensuring the reinforcement effect of the structure even when a large seismic force acts on the building.

Means for Solving the Problems

[0006] (1) The structural reinforcement structure according to at least one embodiment of the present disclosure is a structural reinforcement structure for reinforcing the structure of a building. In a front view of the structure, at least one partition member that extends along the vertical direction inside the structure and divides the inside of the structure into a plurality of regions, and at least one wooden brace that extends along an oblique direction in either one of a set of adjacent regions among the plurality of regions inside the structure.

[0007] According to the configuration described in (1) above, since a wooden brace is provided in either one of a set of regions inside the structure, the other of the set of regions inside the structure can be secured as a work space for constructing the wooden brace on the structure. Therefore, the constructability at the site can be improved.

[0008] (2) In some embodiments, in the configuration described in (1) above, the at least one partition member includes two partition members that sequentially divide the inside of the structure into a first region, a second region, and a third region along the horizontal direction, and the wooden brace is provided in the second region inside the structure.

[0009] According to the configuration described in (2) above, each of the first region and the third region inside the structure can be secured as a work space for constructing the wooden brace in the second region of the structure.

[0010] (3) In some embodiments, in the configuration described in (1) above, the at least one partition member includes one partition member that divides the inside of the structure into a left region and a right region in sequence along the horizontal direction, and the wooden brace is provided in either one of the left region and the right region inside the structure.

[0011] According to the configuration described in (3) above, the other of the left region and the right region inside the structure can be secured as a work space for constructing the wooden brace in either one of the left region and the right region inside the structure.

[0012] (4) In some embodiments, in the configuration according to any one of (1) to (3) above, a first welding alloy fixed to a first member constituting the framework, and a metal brace extending along the diagonal direction in any one of a set of adjacent regions among the plurality of regions inside the framework are further provided. The metal brace is arranged along the extending direction of the wooden brace and fixed to the first welding alloy.

[0013] According to the configuration described in (4) above, when a large seismic force acts on a building, the first welding alloy can pull the metal brace to make the metal brace function as a tension brace.

[0014] (5) In some embodiments, in the configuration according to (4) above, the wooden brace includes a first wooden brace body and a second wooden brace body laminated on the first wooden brace body, and the metal brace is arranged between the first wooden brace body and the second wooden brace body.

[0015] According to the configuration described in (5) above, the metal brace is arranged between the first wooden brace body and the second wooden brace body. Therefore, it becomes possible to handle it as a part (hybrid brace) combining the wooden brace and the metal brace. Also, since the appearance of the hybrid brace can be made to have a wood grain finish, the design can be improved.

Advantages of the Invention

[0016] According to at least one embodiment of the present disclosure, even when a large seismic force acts on a building, it is possible to improve the constructability at the site while ensuring the reinforcement effect of the framework.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

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Figure 12

MODE FOR CARRYING OUT THE INVENTION

[0018] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples.

[0019] <First Embodiment> (Configuration of Frame Reinforcement Structure) The configuration of the frame reinforcement structure 1 according to the first embodiment of the present disclosure will be described. The frame reinforcement structure 1 is for reinforcing the frame 2 of a building. As shown in FIG. 1, the frame 2 is assembled by connecting columns 4 and beams 6 to each other. In the first embodiment, the frame 2 is formed of a steel frame structure (S structure). In the present disclosure, including the description in the drawings, the direction in which the column 4 extends is defined as the "vertical direction W1", and the direction in which the beam 6 extends is defined as the "lateral direction W2" (horizontal direction). Incidentally, when the building is viewed from above, if the building has a rectangular shape, the beam 6 may extend along the longitudinal direction of the building or along the short side direction of the building. Further, when the building is viewed from above, if the building has a circular shape, the beam 6 may extend along the radial direction of the building.

[0020] The frame reinforcement structure 1 includes a partitioning member 9, a wooden brace 8, a first joining metal 10, and a second joining metal 13.

[0021] The partitioning member 9 extends along the vertical direction in the interior 3 of the frame 2 formed by being surrounded by a pair of columns 4, 4 and a pair of beams 6, 6 in the front view of the frame 2. The pair of columns 4, 4 are arranged side by side in the lateral direction W2. The pair of beams 6, 6 are arranged side by side in the vertical direction W1. The steel materials forming each of the column 4 and the beam 6 are not particularly limited, and examples thereof include H-shaped steel, angle steel, round steel, channel steel, or grooved steel. Further, the column 4 and the beam 6 may be formed by a combination of steel materials. In this case, the column 4 and the beam 6 have, for example, a box shape.

[0022] The partitioning member 9 divides the interior 3 of the frame 2 into a plurality of regions. The partitioning member 9 is, for example, an independent column that connects the upper beam 6 (ceiling) and the lower beam (floor) and does not bear, or hardly bears, the vertical load acting on the frame 2. In the first embodiment, as illustrated in FIG. 1, the frame reinforcement structure 1 includes a left partitioning member 9A (9) and a right partitioning member 9B (9) provided on the right side of the left partitioning member in the lateral direction W2. The interior 3 of the frame 2 is divided into a first region 3A, a second region 3B, and a third region 3C in order from the left side in the lateral direction W2 (horizontal direction) by the left partitioning member 9A and the right partitioning member 9B.

[0023] In the form illustrated in FIG. 1, in the front view of the frame 2, when the center line passing through the center in the left - right direction W2 of the frame 2 is defined as O3, the left partition member 9A is located on the side opposite to the right partition member 9B with the center line O3 interposed therebetween. Further, the distance from the center line O3 to the left partition member 9A is equal to the distance from the center line O3 to the right partition member 9B. That is, the first region 3A is bilaterally symmetric with the third region 3C with the center line O3 interposed therebetween.

[0024] The wooden brace 8 is arranged so as to extend along an oblique direction in any one of a set of adjacent regions among a plurality of regions (the first region 3A, the second region 3B, the third region 3C) of the interior 3 of the frame 2. In the first embodiment, as illustrated in FIG. 1, the wooden brace 8 is arranged in the second region 3B of the interior 3 of the frame 2, but is not arranged in the first region 3A and the third region 3C. The wooden brace 8 extends upward as it goes from left to right, or extends downward as it goes from left to right in the second region 3B of the interior 3 of the frame 2. In another embodiment, the wooden brace 8 may be arranged in each of the first region 3A and the third region 3C of the interior 3 of the frame 2. In this case, the wooden brace 8 is not arranged in the second region 3B.

[0025] In the exemplary form shown in FIG. 1, in the front view of the frame 2, a plurality of wooden braces 8 (the first wooden brace 32 and the second wooden brace 34 described later) are provided so that the second region 3B of the interior 3 of the frame 2 is partitioned in a grid pattern. In the exemplary form shown in FIG. 1, the frame reinforcement structure 1 describes the case where both the first wooden brace 32 and the second wooden brace 34 are provided in the second region 3B of the interior 3 of the frame 2, but the present disclosure is not limited to this embodiment. The frame reinforcement structure 1 may be configured such that either one of the first wooden brace 32 and the second wooden brace 34 is provided in the second region 3B of the interior 3 of the frame 2 and the other is not provided (the wooden braces 8 may be arranged in a single flow).

[0026] The first joining metal object 10 is fixed to the column 4 or the beam 6, and joins the wooden brace 8 and the column 4, or the wooden brace 8 and the beam 6. The first joining metal object 10 may be fixed to the column 4 or the beam 6 by, for example, welding, or may be fixed to the column 4 or the beam 6 by a fastener such as a high-strength bolt. In the present embodiment, the first joining metal object 10 is fixed to the beam 6, and protrudes from the inner surface 5 facing the second region 3B of the interior 3 of the structure 2 among the outer peripheral surfaces of the beam 6 toward the interior 3 of the structure 2. The first joining metal object 10 fixed to the beam 6 is directly attached to the inner surface 5 of the beam 6. A recess 14 recessed toward the side opposite to the interior 3 side of the structure 2 (that is, the beam 6 side) is formed in the protruding surface 12 of the first joining metal object 10. The wooden brace 8 includes a protruding portion 18 protruding from the tip surface 16 of the wooden brace 8 toward the side opposite to the interior 3 side of the structure 2. This protruding portion 18 is configured to be insertable into the recess 14 of the first joining metal object 10.

[0027] Referring to FIG. 2, the portion where the wooden brace 8 and the beam 6 are joined by the first joining metal object 10 will be described. In the exemplary form shown in FIG. 2, the first joining metal object 10 protrudes upward from the inner surface 5 of the beam 6. Further, the wooden brace 8 extends upward as it extends from left to right. Note that the protruding portions 18 of the wooden brace 8 are provided at both tip surfaces 16 of the wooden brace 8 (see FIG. 1), but only the protruding portion 18 provided at one tip surface 16 of the wooden brace 8 will be illustrated and described. In some embodiments, the first joining metal object 10 may be the first joining metal object 10 that joins the column 4 and the wooden brace 8.

[0028] As shown in FIG. 2, the side where the angle between the axis O1 of the wooden brace 8 and the beam 6 is an acute angle θ1 is the right side (acute angle side), and the side where the angle with the beam 6 is an obtuse angle θ2 is the left side (obtuse angle side). Hereinafter, the direction in which the axis O1 of the wooden brace 8 extends will be referred to as the "first axis direction".

[0029] The wooden brace 8 includes a protruding portion 18 that protrudes from the front end surface 16 of the wooden brace 8 toward the beam 6. The front end surface 16 of the wooden brace 8 has a planar shape and faces the protruding surface 12 of the first joint metal 10. In the present embodiment, the front end surface 16 of the wooden brace 8 and the protruding surface 12 of the first joint metal 10 are configured to be parallel to the inner side surface 5 of the beam 6. Further, the protruding portion 18 protrudes from a part on the left side in the left-right direction W2 of the front end surface 16 toward the beam 6. The protruding portion 18 is not provided on the remaining part on the right side in the left-right direction W2 of the front end surface 16 and is in contact with the protruding surface 12 of the first joint metal 10.

[0030] The first joint metal 10 includes a recess 14 into which the protruding portion 18 is inserted. Then, the left side surface 20 on the left side of the protruding portion 18 abuts against the left inner wall surface 22 on the left side in the recess 14. In the present embodiment, the recess 14 is configured to have a planar shape in which the left inner wall surface 22 intersects perpendicularly to the left-right direction W2. The protruding portion 18 is configured to have a planar shape in which the left side surface 20 intersects perpendicularly to the left-right direction W2.

[0031] Also, although not shown, in some embodiments, the left inner wall surface 22 of the recess 14 may be inclined with respect to the left-right direction W2. The left inner wall surface 22 of the recess 14 may be inclined with respect to the left-right direction W2 such that the distance from the bottom surface 28 of the recess 14 increases as it goes from left to right. In this case, the left side surface 20 of the protruding portion 18 is in surface contact with the left inner wall surface 22 in the recess 14. Further, the left inner wall surface 22 of the recess 14 may be inclined with respect to the left-right direction W2 such that it approaches the bottom surface 28 of the recess 14 as it goes from left to right.

[0032] In the exemplary form shown in FIG. 2, the right side surface 24 on the right side of the protruding portion 18 is spaced apart from the right inner wall surface 30 on the right side in the recess 14. Further, the front end surface 26 of the protruding portion 18 abuts against the bottom surface 28 of the recess 14. Incidentally, although not shown, in some embodiments, the right side surface 24 of the protruding portion 18 abuts against the right inner wall surface 30 in the recess 14. Also, although not shown, in some embodiments, the front end surface 26 of the protruding portion 18 is spaced apart from the bottom surface 28 of the recess 14.

[0033] Also, in the first embodiment, as shown in FIG. 1, the wooden brace 8 includes a first wooden brace 32(8) and a second wooden brace 34(8). In this embodiment, the wooden brace 8 that extends upward as it goes from left to right among the wooden braces 8 is defined as the first wooden brace 32. Also, the wooden brace 8 that extends downward as it goes from left to right among the wooden braces 8 is defined as the second wooden brace 34. The protrusion 36(18) of the first wooden brace 32 and the protrusion 38(18) of the second wooden brace 34 may be inserted into the recess 14 of the common first joining metal object 10.

[0034] Here, with reference to FIG. 3, an example of the configuration of the first joining metal object 10 will be described. The first joining metal object 10 includes a left side wall forming portion 44 and a right side wall forming portion 46. Each of the left side wall forming portion 44 and the right side wall forming portion 46 is fixed to the inner surface 5 of the beam 6. The left side wall forming portion 44 and the right side wall forming portion 46 are arranged side by side at intervals in the left - right direction W2.

[0035] The left side wall forming portion 44 includes an upward extending portion 48 that extends upward from the inner surface 5 of the beam 6, a leftward extending portion 50 that extends leftward from the upper end of the upward extending portion 48, and a first bottom surface portion 28A(28) that extends rightward between the upper end and the lower end of the upward extending portion 48. The upward extending portion 48 of the left side wall forming portion 44 protrudes above the first bottom surface portion 28A. The portion 47 above the first bottom surface portion 28A on the right side surface of the upward extending portion 48 of the left side wall forming portion 44 corresponds to the left inner wall surface 22 of the recess 14 described above. Also, the upper surface 49 of the leftward extending portion 50 corresponds to a part of the protruding surface 12 of the first joining metal object 10 described above (the protruding surface 12 on the side that does not contact the tip surface 16 of the first wooden brace 32).

[0036] The right side wall forming portion 46 includes an upward extending portion 52 extending upward from the inner side surface 5 of the beam 6, a rightward extending portion 54 extending rightward from the upper end of the upward extending portion 52, and a second bottom surface portion 28B(28) extending leftward between the upper end and the lower end of the upward extending portion 52. The upward extending portion 52 of the right side wall forming portion 46 protrudes upward from the second bottom surface portion 28B. A portion 51 above the second bottom surface portion 28B of the left side surface of the upward extending portion 52 of the right side wall forming portion 46 corresponds to the right inner wall surface 30 of the concave portion 14 described above. Also, the upper surface 53 of the rightward extending portion 54 corresponds to the remaining portion of the protruding surface 12 of the above-described first joint metal object 10 (the protruding surface 12 on the side that abuts against the tip surface 16 of the first wooden brace 32). Also, in the left-right direction W2, the first bottom surface portion 28A and the second bottom surface portion 28B are spaced apart from each other.

[0037] Also, in the exemplary form shown in FIG. 3, when the protruding portion 36 of the first wooden brace 32 is inserted into the concave portion 14 of the common first joint metal object 10, it abuts against the left inner wall surface 22 (one side inner wall surface) on the left side in the concave portion 14 of the common first joint metal object 10. Also, when the protruding portion 38 of the second wooden brace 34 is inserted into the concave portion 14 of the common first joint metal object 10, it abuts against the right inner wall surface 30 (the other side inner wall surface) on the right side in the concave portion 14 of the common first joint metal object 10. Also, in a direction (the depth direction of the paper surface, hereinafter referred to as "front-rear direction W3") orthogonal to each of the vertical direction W1 and the left-right direction W2, the protruding portion 36 of the first wooden brace 32 and the protruding portion 38 of the second wooden brace 34 are displaced from each other and inserted into the concave portion 14 of the common first joint metal object 10. In the present embodiment, the first wooden brace 32 is disposed on one side (front side) in the front-rear direction W3 with respect to the second wooden brace 34. Also, starting from the common first joint metal object 10, in the left-right direction W2, the first wooden brace 32 extends rightward from the common first joint metal object 10, and the second wooden brace 34 extends leftward from the common first joint metal object 10. Also, the protruding portion 36 of the first wooden brace 32 and the protruding portion 38 of the second wooden brace 34 have the same rectangular cross-sectional shape on a plane defined by each side extending along the vertical direction W1 and the left-right direction W2 in a front view of the structure 2 (the direction seen from the front side in the front-rear direction W3).

[0038] Further, in the first embodiment, as shown in FIG. 1, the wooden brace 8 includes a first intersecting wooden brace 56(8) and a second intersecting wooden brace 58(8) that are arranged to intersect each other in the second region 3B of the interior 3 of the framework 2. With reference to FIG. 4, the configuration in which the first intersecting wooden brace 56 and the second intersecting wooden brace 58 intersect will be described. In the present disclosure, the wooden brace 8 that extends upward as it goes from left to right among the wooden braces 8 is defined as the first intersecting wooden brace 56. That is, the first wooden brace 32 described above corresponds to the first intersecting wooden brace 56. Also, the wooden brace 8 that extends downward as it goes from left to right among the wooden braces 8 is defined as the second intersecting wooden brace 58. That is, the second wooden brace 34 described above corresponds to the second intersecting wooden brace 58.

[0039] The first intersecting wooden brace 56 includes a first intersecting wooden brace main body 60 and a second intersecting wooden brace main body 62. The first intersecting wooden brace main body 60 has a long plate shape and extends along the axial direction of the first intersecting wooden brace 56. The second intersecting wooden brace main body 62 has a long plate shape and extends along the axial direction of the first intersecting wooden brace 56. Also, the second intersecting wooden brace main body 62 is laminated on one surface 61 of the first intersecting wooden brace main body 60 having a planar shape. In the present disclosure, the direction in which one surface 61 of the first intersecting wooden brace main body 60 faces is defined as one of the "thickness directions W4". In the exemplary form shown in FIG. 4, one surface 61 of the first intersecting wooden brace main body 60 faces the other surface 63 on the other side in the thickness direction W4 of the second intersecting wooden brace main body 62.

[0040] The second cross-laminated brace 58 includes a third cross-laminated brace body 64 and a fourth cross-laminated brace body 66. The third cross-laminated brace body 64 has a long plate shape and extends along the axial direction of the second cross-laminated brace 58. The fourth cross-laminated brace body 66 has a long plate shape and extends along the axial direction of the second cross-laminated brace 58. Further, the fourth cross-laminated brace body 66 is laminated on one surface 65 on one side in the thickness direction W4 of the third cross-laminated brace body 64 having a planar shape. In the exemplary form shown in FIG. 4, one surface 65 of the third cross-laminated brace body 64 faces the other surface 67 on the other side in the thickness direction W4 of the fourth cross-laminated brace body 66.

[0041] Further, a first groove 70 that is recessed toward one side in the thickness direction W4 is formed in the other surface 69 on the other side in the thickness direction W4 of the first cross-laminated brace body 60. Further, a second groove 72 that is recessed toward one side in the thickness direction W4 is formed in the other surface 63 of the second cross-laminated brace body 62. The first groove 70 is recessed from the other surface 69 of the first cross-laminated brace body 60 across the entire width direction (a direction orthogonal to each of the thickness direction W4 and the axial direction of the first cross-laminated brace 56) of the first cross-laminated brace body 60. The second groove 72 is recessed from the other surface 63 of the second cross-laminated brace body 62 across the entire width direction (a direction orthogonal to each of the thickness direction W4 and the axial direction of the first cross-laminated brace 56) of the second cross-laminated brace body 62.

[0042] On one surface 65 of the third cross-laminated brace body 64, a third groove 74 that is recessed toward the other side in the thickness direction W4 is formed. On one surface 71 on one side in the thickness direction W4 of the fourth cross-laminated brace body 66, a fourth groove 76 that is recessed toward the other side in the thickness direction W4 is formed. The third groove 74 is recessed from one surface 65 of the third cross-laminated brace body 64 across the entire width direction of the third cross-laminated brace body 64 (a direction orthogonal to each of the thickness direction W4 and the axial direction of the second cross-laminated brace 58). The fourth groove 76 is recessed from one surface 71 of the fourth cross-laminated brace body 66 across the entire width direction of the fourth cross-laminated brace body 66 (a direction orthogonal to each of the thickness direction W4 and the axial direction of the second cross-laminated brace 58).

[0043] Then, the first groove 70 formed on the other surface 69 of the first cross-laminated brace body 60 and the third groove 74 formed on one surface 65 of the third cross-laminated brace body 64 are engaged. Also, the second groove 72 formed on the other surface 63 of the second cross-laminated brace body 62 and the fourth groove 76 formed on one surface 71 of the fourth cross-laminated brace body 66 are engaged. In the present embodiment, in the region where the first cross-laminated brace 56 and the second cross-laminated brace 58 intersect, in the direction from the other side to the one side in the thickness direction W4, the third cross-laminated brace body 64, the first cross-laminated brace body 60, the fourth cross-laminated brace body 66, and the second cross-laminated brace body 62 are arranged (stacked) in this order.

[0044] Next, the second joining metal 13 will be described. As shown in FIG. 1, the second joining metal 13 is fixed to the partitioning member 9. The second joining metal 13 may be fixed to the partitioning member 9 by, for example, welding, or may be fixed to the partitioning member 9 by a fastener such as a high-strength bolt.

[0045] The second joint metal 13 is configured in the same manner as the first joint metal 10 described above, except that it is fixed to the partitioning member 9. As shown in FIG. 1, the second joint metal 13 includes a recess 27 into which a protruding portion 25 protruding from the tip surface 23 on the side opposite to the tip surface 16 of the wooden brace 8 toward the side opposite to the inside 3 of the structure 2 is inserted. Then, the upper surface 29 of the protruding portion 25 abuts against the upper inner wall surface 31 in the recess 27.

[0046] (Function and effect) The function and effect of the structure reinforcement structure 1 according to the first embodiment of the present disclosure will be described. FIG. 5 shows a graph showing the relationship between the compressive force acting on the wooden brace 8 and the amount of deformation of the structure 2. The wooden brace 8 according to the first embodiment of the present disclosure is shown by a solid line, and the wooden brace 08 according to the reference example is shown by a dotted line. As shown in FIG. 6, in the wooden brace 08 according to the reference example, the tip surface 016 of the wooden brace 08 is not provided with a protruding portion to be inserted into the recess of the first joint metal 010, and the tip surface 016 of the wooden brace 08 and the protruding surface 012 of the first joint metal 010 are in contact with each other. And the tip surface 016 of the wooden brace 08 and the protruding surface 012 of the first joint metal 010 intersect perpendicularly to the axis O direction of the wooden brace 08.

[0047] As shown by the dotted line in FIG. 5, in the wooden brace 08 according to the reference example, as the compressive force acting on the wooden brace 08 increases, the wooden brace 08 itself is compressed and deformed. And when the compressive force reaches a predetermined value P1, the wooden brace 08 buckles. When the wooden brace 08 buckles, the wooden brace 08 cannot function as a compression brace. On the other hand, in the wooden brace 8 according to the first embodiment, as the compressive force acting on the wooden brace 8 increases, the wooden brace 8 is compressed and the structure 2 also deforms. However, when the compressive force acting on the wooden brace 8 reaches a predetermined value P2, before the wooden brace 8 buckles, the protruding portion 18 preferentially sinks into the first joint metal 10, so that the compressive force acting on the wooden brace 8 does not increase any more, and only the amount of deformation of the structure 2 increases.

[0048] According to the configuration of the frame reinforcement structure 1 according to the first embodiment of the present disclosure, even when a large seismic force acts on the building and the compressive force transmitted from the first joint metal 10 to the wooden brace 8 increases, since the left side surface 20 of the protruding portion 18 is in contact with the left inner wall surface 22 in the concave portion 14 of the first joint metal 10, the protruding portion 18 of the wooden brace 8 can be made to sink into the first joint metal 10 before the wooden brace 8 buckles. Even if the protruding portion 18 of the wooden brace 8 sinks into the first joint metal 10, the wooden brace 8 can perform a certain function as a compression brace. Therefore, even when a large seismic force acts on the building, buckling of the wooden brace 8 can be avoided and the toughness of the building can be improved.

[0049] The second joint metal 13 also exhibits the same actions and effects as the first joint metal 10. According to the configuration of the frame reinforcement structure 1 according to the first embodiment of the present disclosure, even when a large seismic force acts on the building and the compressive force transmitted from the second joint metal 13 to the wooden brace 8 increases, since the upper surface 29 of the protruding portion 25 is in contact with the upper inner wall surface 31 in the concave portion 27 of the second joint metal 13, the protruding portion 25 of the wooden brace 8 can be made to sink into the second joint metal 13 before the wooden brace 8 buckles. Even if the protruding portion 18 of the wooden brace 8 sinks into the second joint metal 13, the wooden brace 8 can perform a certain function as a compression brace. Therefore, even when a large seismic force acts on the building, buckling of the wooden brace 8 can be avoided and the toughness of the building can be improved.

[0050] According to the configuration illustrated and described in FIG. 1, among the three regions of the interior 3 of the frame 2, the wooden brace 8 is arranged in the second region 3B, and the wooden brace 8 is not arranged in the first region 3A and the third region 3C. For this reason, the first region 3A and the third region 3C can be secured as work spaces for constructing the wooden brace 8 in the second region 3B of the frame 2. For this reason, the constructability at the site can be improved. Furthermore, compared with the case where the wooden brace 8 is arranged throughout the entire interior 3 of the frame 2, the number of wooden braces 8 can be reduced, so the manufacturing cost can be reduced.

[0051] According to the configuration illustrated and described with reference to FIGS. 1 and 3, since the protruding portions 36 of the first wooden brace 32 and the protruding portions 38 of the second wooden brace 34 are inserted into the recesses 14 of the common first joint metal 10, the number of the first joint metals 10 fixed to the structure 2 can be reduced.

[0052] Further, according to the configuration illustrated and described with reference to FIGS. 1 and 3, since the first wooden brace 32 and the second wooden brace 34 are inserted into the recesses 14 of the common first joint metal 10 from different directions, when seismic force acts on the building, forces do not act on the common first joint metal 10 from the first wooden brace 32 and the second wooden brace 34 simultaneously. Therefore, breakage of the first joint metal 10 can be suppressed more effectively than in the case where the first wooden brace 32 and the second wooden brace 34 are inserted into the recesses 14 of the common first joint metal 10 from the same direction.

[0053] Further, as a result of intensive studies by the inventors, it has been found that the resistance to buckling of the wooden brace 8 is mainly determined by the cross-sectional shape of the protruding portion 18 in the front view of the structure 2, rather than the length of the wooden brace 8. According to the configuration illustrated and described with reference to FIGS. 1 and 3, the protruding portions 36 of the first wooden brace 32 and the protruding portions 38 of the second wooden brace 34 have the same cross-sectional shape in the front view of the structure 2. Therefore, for example, even if the first wooden brace 32 extends obliquely along the interior 3 of the structure 2 longer than the second wooden brace 34, the first wooden brace 32 can have the same resistance to buckling as the second wooden brace 34. In addition, the dimensions of the protruding portions 36 of the first wooden brace 32 and the protruding portions 38 of the second wooden brace 34 can be unified, and the production efficiency of the wooden brace 8 including the first wooden brace 32 and the second wooden brace 34 can be improved.

[0054] Further, according to the configuration illustrated and described with reference to FIGS. 1 and 4, the first cross wooden brace 56 and the second cross wooden brace 58 can be crossed in the interior 3 of the structure 2 without shifting from each other.

[0055] <Second Embodiment> (Configuration of Hybrid Brace) The structural reinforcement structure 1 according to the second embodiment of the present disclosure will be described. The second embodiment is different from the first embodiment in that a metal brace 80 is further provided, but other configurations are the same as those described in the first embodiment. In the second embodiment, components that are the same as those in the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted.

[0056] As shown in FIG. 7, the structural reinforcement structure 1 further includes a metal brace 80 extending along the diagonal direction inside the structure 2. The metal brace 80 is formed of metal. The metal brace 80 is fixed to the first bonding alloy 10 and includes a compressive force cancellation mechanism 82 configured to cancel the axial compressive force acting on the metal brace 80. In the present embodiment, the metal brace 80 is disposed within the wooden brace 8, and a so-called hybrid brace composed of a combination of different materials is provided in the second region 3B inside the structure 2. Further, one end portion 84a of the metal brace 80 is fixed to the first bonding alloy 10 by being fastened to the first bonding alloy 10 with a fastener 85 such as a bolt. Note that the other end portion 84b of the metal brace 80 may be fastened to the second bonding alloy 13 with a fastener 85 such as a bolt, or may be fastened to a first bonding alloy 10 different from the first bonding alloy 10 to which one end portion 84a of the metal brace 80 is fastened. Further, the present disclosure is not limited to this embodiment, and the metal brace 80 may be fixed to the first bonding alloy 10 by a method other than fixing with the fastener 85.

[0057] With reference to FIG. 8, a configuration example of the first bonding alloy 10 for fixing the metal brace 80 to the first bonding alloy 10 will be described. One end portion 84a of the metal brace 80 protrudes toward the side opposite to the inside 3 of the structure 2 (the beam 6 side) from the protruding portion 18 of the wooden brace 8. Further, a through hole 84c into which the fastener 85 is inserted is provided at one end portion 84a of the metal brace 80. Note that the configuration of the first bonding alloy 10 illustrated and described in FIG. 8 is also applicable to the second bonding alloy 13.

[0058] The first bonding alloy 10 has a shape divided into two in the front-rear direction W3, and a gap 87 into which one end portion 84a of the metal brace 80 can be inserted is formed therebetween. In the exemplary form shown in FIG. 8, the left side wall forming portion 44 of the first bonding alloy 10 includes a first left side wall forming portion 44a and a second left side wall forming portion 44b arranged side by side in the front-rear direction W3. In the front-rear direction W3, the first left side wall forming portion 44a is located in front of the second left side wall forming portion 44b. The first left side wall forming portion 44a and the second left side wall forming portion 44b are spaced apart from each other. Similarly, the right side wall forming portion 46 of the first bonding alloy 10 includes a first right side wall forming portion 46a and a second right side wall forming portion 46b arranged side by side in the front-rear direction W3. In the front-rear direction W3, the first right side wall forming portion 46a is located in front of the second right side wall forming portion 46b. The first right side wall forming portion 46a and the second right side wall forming portion 46b are spaced apart from each other. That is, in the present embodiment, the gap 87 is formed by separating the first left side wall forming portion 44a and the second left side wall forming portion 44b from each other, and separating the first right side wall forming portion 46a and the second right side wall forming portion 46b from each other. Incidentally, each of the first left side wall forming portion 44a, the second left side wall forming portion 44b, the first right side wall forming portion 46a, and the second right side wall forming portion 46b is configured to be fastened to the upper and lower portions 91b of the L-shaped member 91 described later by a fastening tool such as a bolt. That is, the left side wall forming portion 44 and the right side wall forming portion 46 are fixed to the inner surface 5 of the beam 6 via the L-shaped member 91.

[0059] Also, in the exemplary form shown in FIG. 8, the first joint metal object 10 further includes a pair of L-shaped members 91, 91. The pair of L-shaped members 91, 91 are arranged side by side in the front-rear direction W3. The L-shaped member 91 includes a plate-shaped horizontal portion 91a configured to be fixable to the inner surface 5 of the beam 6, and a plate-shaped vertical portion 91b configured to be insertable into the gap 87. In the gap 87, the vertical portions 91b of the pair of L-shaped members 91, 91 are arranged so as to be separated from each other in the front-rear direction W3. That is, in the gap 87, an insertion space 89 is defined by the vertical portions 91b of the pair of L-shaped members 91, 91. One end portion 84a of the metal brace 80 is inserted into the insertion space 89, and is configured such that a through hole 91c formed in the vertical portion 91b and a through hole 84c of the one end portion 84a of the metal brace 80 are fastened by a fastener 85 (not shown).

[0060] In addition, in FIG. 8, an example in which one wooden brace 8 and the metal brace 80 are fixed to the first joint metal object 10 is shown. However, in addition to this, as shown in FIG. 7, for one first joint metal object 10, another wooden brace 8 and the metal brace 80 may be attached to the first joint metal object 10 from a direction that is line-symmetric with respect to the position of the through hole 91c of the first joint metal object 10. In this case, the two metal braces 80 are fixed by a common fastener 85 at the position of the through hole 91c of the first joint metal object 10. The insertion of the two wooden braces 8 into the first joint metal object 10 is the same as the structure shown in FIG. 3.

[0061] Referring to FIG. 9, the configuration of the compression force canceling mechanism 82 will be described. The metal brace 80 includes a first extending portion 84 and a second extending portion 86. The first extending portion 84 extends along the direction of the axis O2 of the metal brace 80. Hereinafter, the direction of the axis O2 of the metal brace 80 will be referred to as the "second axis direction". This second axis direction may be a direction parallel to the first axis direction which is the axis direction of the wooden brace 8 described above.

[0062] The second extending portion 86 extends along the second axis direction, and one end portion 94 on one side in the second axis direction of the second extending portion 86 is configured to be connected to the other end portion 90 on the other side in the second axis direction of the first extending portion 84. A first through hole 92 penetrating the one end portion 94 of the second extending portion 86 is formed in the second extending portion 86. This first through hole 92 has a longitudinal shape in the second axis direction. Further, a pin member 96 protruding from the other end portion 90 of the first extending portion 84 is provided in the first extending portion 84. This pin member 96 passes through the first through hole 92. In the example of FIG. 9, the pin member 96 is in contact with the inner wall surface 98 of the portion of the inner wall surface of the first through hole 92 facing the other side in the second axis direction, but the pin member 96 is movable by the length of the first through hole 92 in the second axis direction, and with this structure, even if a compressive force acts on the metal brace 80, the force can be canceled.

[0063] In the exemplary form shown in FIG. 9, the metal brace 80 further includes a third extending portion 88. The third extending portion 88 extends along the second axis direction. A hole 101 is formed in one end portion 99 on one side in the second axis direction of the third extending portion 88, and a convex member 103 protruding from the other end portion 100 of the second extending portion 86 passes through it. By this combination of the hole 101 and the convex member 103, the second extending portion 86 is fixed to the third extending portion 88. As shown in FIG. 7, one end portion on one side in the second axis direction of the first extending portion 84 corresponds to one end portion 84a of the above-described metal brace 80. Similarly, the other end portion on the other side in the second axis direction of the third extending portion 88 corresponds to the other end portion 84b of the above-described metal brace 80.

[0064] Referring to FIG. 10, a configuration in which the metal brace 80 is disposed inside the wooden brace 8 (that is, a configuration of a hybrid brace) will be described. The wooden brace 8 includes a first wooden brace main body 102 and a second wooden brace main body 104 laminated on the first wooden brace main body 102. And the metal brace 80 is disposed between the first wooden brace main body 102 and the second wooden brace main body 104.

[0065] The first wooden brace body 102(60) illustrated in FIG. 10 further limits the configuration of the first cross wooden brace body 60 described in the first embodiment. Also, the second wooden brace body 104(62) illustrated in FIG. 10 further limits the configuration of the second cross wooden brace body 62 described in the first embodiment. Hereinafter, the first wooden brace body 102 will be described as the first cross wooden brace body 60, and the second wooden brace body 104 will be described as the second cross wooden brace body 62 for explanation.

[0066] As illustrated in FIG. 10, a first storage space 106 extending along the axial direction of the first cross wooden brace 56 is formed between the first cross wooden brace body 60 (the first wooden brace body 102) and the second cross wooden brace body 62 (the second wooden brace body 104). In the exemplary form shown in FIG. 10, the first storage space 106 is formed by a part of one surface 61 of the first cross wooden brace body 60 being recessed toward the other surface 69 of the first cross wooden brace body 60. And the metal brace 80 is disposed within the first storage space 106. Note that the first storage space 106 is not limited to the configuration illustrated and described in FIG. 10 as long as it is configured to be able to dispose the metal brace 80. For example, although not shown, the first storage space 106 may be formed by a part of the other surface 63 of the second cross wooden brace body 62 being recessed toward one surface (the surface facing one side in the thickness direction W4) of the second cross wooden brace body 62.

[0067] In the exemplary form shown in FIG. 10, the first cross-laminated brace body 60 includes a pair of first spacers 108, 108 disposed on the remaining portion of one surface 61 of the first cross-laminated brace body 60 (the portion where the first storage space 106 is not formed). Each of the pair of first spacers 108, 108 has a longitudinal shape and extends along the axial direction of the first cross-laminated brace 56. Further, a gap 109 through which an intersecting metal brace 114 intersecting the metal brace 80 passes is formed in each of the pair of first spacers 108, 108. Further, each of the pair of first spacers 108, 108 is spaced apart from each other in the width direction of the first cross-laminated brace body 60. Note that the case where the first cross-laminated brace body 60 includes the pair of first spacers 108, 108 has been described as an example, but the present disclosure is not limited to this embodiment.

[0068] In the exemplary form shown in FIG. 10, the third cross-laminated timber brace body 64 includes a pair of second spacers 110, 110 disposed on one surface 65 of the third cross-laminated timber brace body 64. Each of the pair of second spacers 110, 110 has an elongated shape and extends along the axial direction of the second cross-laminated timber brace 58. Each of the pair of second spacers 110, 110 is provided on both sides of the third groove 74 in the axial direction of the second cross-laminated timber brace 58. Further, each of the pair of second spacers 110, 110 is spaced apart from each other in the width direction of the third cross-laminated timber brace body 64. The second storage space 112 is formed by being surrounded by the third cross-laminated timber brace body 64 and the pair of second spacers 110, 110. And, an intersecting metal brace 114 that intersects the metal brace 80 is disposed in the second storage space 112. The intersecting metal brace 114 is located on one side of the first cross-laminated timber brace body 60 in the thickness direction W4. Note that if the second storage space 112 is configured to be able to dispose the intersecting metal brace 114, it is not limited to the configuration illustrated and described with reference to FIG. 10. For example, although not shown, the second storage space 112 may be formed by a part of one surface 65 of the third cross-laminated timber brace body 64 being recessed toward the other surface of the third cross-laminated timber brace body 64 (the surface facing the other side in the thickness direction W4). Further, although the case where the third cross-laminated timber brace body 64 includes a pair of second spacers 110, 110 has been described as an example, the present disclosure is not limited to this embodiment.

[0069] (Function and Effect) According to the second embodiment, when a large seismic force acts on a building, the first joint metal 10 can pull the metal brace 80 and cause the metal brace 80 to function as a tension brace. Further, since the metal brace 80 includes the compression force canceling mechanism 82, the axial compression force of the metal brace 80 acting on the metal brace 80 when the compression force canceling mechanism 82 is not included can be borne by the wooden brace 8. According to the compression force canceling mechanism 82 illustrated in FIG. 8, even when an attempt is made to compress the metal brace 80, at least one of the first extending portion 84 and the second extending portion 86 slides, and the action of the compression force on the metal brace 80 can be avoided.

[0070] Also, according to the second embodiment, the metal brace 80 is disposed between the first wooden brace body 102 and the second wooden brace body 104. Therefore, it becomes possible to handle it as a part (hybrid brace) combining the wooden brace 8 and the metal brace 80. Further, since the appearance of the hybrid brace can be made to have a wood grain pattern, the design can be improved.

[0071] As described above, the structural reinforcement structure according to the first and second embodiments of the present disclosure has been described. However, the present disclosure is not limited to the above-described form, and various modifications can be made without departing from the object of the present disclosure.

[0072] In the first and second embodiments, the interior 3 of the structure 2 was divided into three regions (the first region 3A, the second region 3B, and the third region 3C) by two partition members 9 (the left partition member 9A and the right partition member 9B). However, the present disclosure is not limited to this form. If the interior 3 of the structure 2 is divided into a plurality of regions, the structural reinforcement structure 1 may include one or three or more partition members 9.

[0073] In some embodiments, as shown in FIG. 11, the frame reinforcement structure 1 includes one partition member 9, and the interior 3 of the frame 2 is partitioned by this one partition member 9 into a left region 3D and a right region 3E in order along the left - right direction W2. The left region 3D and the right region 3E are adjacent to each other in the left - right direction W2, and the left region 3D is located on the left side of the right region 3E. In the form illustrated in FIG. 11, a wooden brace 8 is arranged in the right region 3E, and no wooden brace 8 is arranged in the left region 3D. In other words, among a pair of adjacent regions (the left region 3D and the right region 3E) in the left - right direction W2, the wooden brace 8 is arranged in the right region 3E and not in the left region 3D. According to the configuration illustrated in FIG. 11, the left region 3D can be secured as a working space for constructing the wooden brace 8 in the right region 3E. In another embodiment, no wooden brace 8 may be arranged in the right region 3E, and a wooden brace 8 may be arranged in the left region 3D.

[0074] The frame 2 is not limited to the configurations illustrated in the first and second embodiments. In some embodiments, as shown in FIG. 12, the frame 2A(2) includes a first column 4A(4), a second column 4B(4), and a beam 6A(6). Each of the first column 4A and the second column 4B is formed of H - shaped steel. Also, the first column 4A and the second column 4B are arranged side by side in the extending direction of the beam 6. The first column 4A is arranged such that the surface 11a of the flange 11 of the first column 4A (the side closer to the second column 4B in the extending direction of the beam 6) faces the interior 3 of the frame 2. The second column 4B is arranged such that the surface 17a of the web 17 of the second column 4B faces the interior 3 of the frame 2. The beam 6A is arranged such that one end 19a abuts against the surface 11a of the flange 11 of the first column 4A and the other end 19b abuts against the surface 17a of the web 17 of the second column 4B. That is, the other end portion 19c including the other end 19b of the beam 6A fits into the gap 21 defined by the web 17 and the flange 15 of the second column 4B.

[0075] In this case, although not shown, the first joining metal object 10 fixed to the first column 4A is directly attached to the surface 11a of the flange 11 of the first column 4A. Further, the first joining metal object 10 fixed to the second column 4B is attached to the surface 17a of the web 17 of the second column 4B via a pedestal. According to such a configuration, the structure 2A with various outer dimensions can be easily formed.

Description of Reference Numerals

[0076] 1 Structure reinforcement structure 2 Structure 3 Inside of the structure 4 Column (first member) 6 Beam (first member) 8 Wooden brace 9 Partition member 10 First joining metal object 13 Second joining metal object 14 Recess 16 Tip end surface of the wooden brace 18 Protrusion 20 Left side surface (surface on the obtuse angle side) 22 Left inner wall surface (inner wall surface) 32 First wooden brace 34 Second wooden brace 56 First cross wooden brace 58 Second cross wooden brace 60 First cross wooden brace body 62 Second cross wooden brace body 64 Third cross wooden brace body 66 Fourth cross wooden brace body 70 First groove 72 Second groove 74 Third groove 76 Fourth groove 80 Metal brace 82 Compressive force cancellation mechanism 84 First extending portion 86 Second extending portion 90 Other side end (end on the other side of the first extending portion) 92 First through hole 94 One side end (end on one side of the second extending portion) 96-pin member 102 First wooden brace body 104 Second wooden brace body 106 First storage space O1 Axis of the wooden brace O2 Axis of the metal brace

Claims

1. A structural reinforcement structure for reinforcing the structure of a building, In a front view of the structure, at least one partitioning member that extends along the vertical direction inside the structure and divides the inside of the structure into a plurality of regions; At least one wooden brace that extends along an oblique direction in any one of a set of adjacent regions among the plurality of regions inside the structure, Structural reinforcement structure.

2. The at least one partitioning member includes two partitioning members that sequentially divide the inside of the structure into a first region, a second region, and a third region along the horizontal direction, The wooden brace is provided in the second region inside the structure, The structural reinforcement structure according to Claim 1.

3. The at least one partitioning member includes one partitioning member that divides the inside of the structure into a left region and a right region in sequence along the horizontal direction, The wooden brace is provided in either the left region or the right region inside the structure, The structural reinforcement structure according to Claim 1.

4. A first joint metal object fixed to a first member constituting the structure, Further comprising a metal brace that extends along the oblique direction in any one of a set of adjacent regions among the plurality of regions inside the structure, The metal brace is arranged along the extending direction of the wooden brace and fixed to the first joint metal object, The structural reinforcement structure according to any one of Claims 1 to 3.

5. The wooden brace includes a first wooden brace body and a second wooden brace body laminated on the first wooden brace body, The metal brace is arranged between the first wooden brace body and the second wooden brace body, The structural reinforcement structure according to Claim 4.

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