Brace fitting structure

Abstract

To provide a brace fitting structure capable of fitting a brace at an arbitrary position on facing members between the facing members among members forming a structural surface of a building of arbitrary shape and size using one kind of brace fixture.SOLUTION: A brace fitting structure is formed by fitting a brace through a brace fixture between beams 2A, 2B facing each other among members forming a first horizontal structural surface of a building. The brace fixture has a connecting piece to which the two braces are connected at arbitrary angle. Brace fixtures 10, 40, 50 are fitted to the beam 2A. Brace fixtures 60, 20, 30 are fitted to the beam 2B. Two braces 4, 5 and 6, 7 are connected to the connecting piece of the brace fixtures 10, 60. One brace is connected to the connecting piece of the brace fixtures 20, 30, 40, 50. All the brace fixtures have the same shape, size, and structure.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a brace fixing fitting used for attaching braces and cross members to the structure of various buildings such as wooden buildings, and a brace attachment structure using the brace fixing fitting.

Background Art

[0002] In a building, a two-dimensional frame (framework) called a structure is formed by columns, horizontal members, frame members, etc. Braces or cross members (hereinafter referred to as "braces, etc.") are attached to the diagonal lines and the like to improve the seismic resistance of the structure. When attaching braces, etc. to the structure, various proposals have been made from the viewpoints of seismic resistance, constructability, ease of attachment, etc.

[0003] For example, Patent Document 1 (JP 2004-346499 A) describes an architectural structure 1 that is configured with a structural face 2 formed into a substantially rectangular shape by columns 3, beams 4, etc., and the structural face 2 is configured with two upper structural faces 2A that are configured with three columns 3 and upper beams 4A and intermediate beams 4B of beams 4, and two lower structural faces 2B that are configured with three columns 3 and intermediate beams 4B and lower beams 4C, and reinforcement devices 10 are attached to the end sides in different directions of the upper beams 4A, intermediate beams 4B, and lower beams 4C that respectively configure the two upper and lower structural faces 2A, 2B, and the reinforcement devices 10 are configured with a pair of fixing means 11 and a brace 20, and the fixing means 11 includes fixing means 11A and 11C of a type in which two braces 20 are provided, and fixing means 11B, 11D, 11E of a type in which one brace 20 is provided. The fixing means 11A is configured as a pair of clamping members 12 consisting of a surface member 13 and a back member 14, and a cylindrical brace mounting member 15. The brace mounting member 15 is attached to the surface of the surface member 13 by welding or the like, and four cylindrical members 16 through which fixing bolts 17 are inserted are attached near the outer periphery of the surface member 13. Horizontal holes 15A and 15B for attaching the braces are drilled in the side of the brace mounting member 15.

[0004] However, in the structural face reinforcement device of Patent Document 1, the fixing means 11 is attached to the surface side of the beams 4 (upper beam 4A, intermediate beam 4B, lower beam 4C), i.e., to a surface parallel to the structural face 2, which causes the problem that the fixing means 11 protrudes vertically from the structural face 2, preventing the attachment of surface materials, etc. along the structural face 2. Furthermore, the fixing means 11 (11A) of Patent Document 1 has a complex structure consisting of a pair of clamping members 12 consisting of a surface member 13 and a back member 14, a cylindrical brace mounting member 15, and four tubular members 16. This not only requires time and effort to process, but also requires the beam 4 to be clamped between the surface member 13 and the back member 14, resulting in the problem that the installation work takes a long time. Furthermore, the fixing means 11 of Patent Document 1 is composed of six types, namely 11A, 11B, 11C, 11D, 11E, and 11F, with different structures, and there is a problem that its handling and management become complicated.

[0005] Next, Patent Document 2 (Japanese Patent Application Laid-Open No. 2005-213905) discloses a joining structure of wooden three-story residential members. In the first-floor column base part, the anchor bolts pull the column 8 by the pulling hardware 2, and further, it is joined to the base fastening hardware 1, the diagonal member 3, and the turnbuckle 10. In the second and third floors (intermediate floors), after joining the pulling flat hardware 4 to the column base of the upper floor with a screw vis or the like, a tensile force is applied to the diagonal member 3 of the lower floor by the turnbuckle 10, and then the column head is joined. On the rooftop floor, after joining the pulling flat hardware 4 to the horizontal member with a screw vis 11 or the like, a tensile force is applied in the same manner as above, and then it is joined to the column head. A joining structure of residential members is disclosed. However, in the joining structure of the residential members of Patent Document 2, since the pulling flat hardware 4 is attached to the surface of the column and the horizontal member that straddles the column and the horizontal member and is parallel to the plane formed by the column and the horizontal member, there is a problem that it hinders the attachment of a facing material or the like along the plane formed by the column and the horizontal member, similar to Patent Document 1. Also, in the joining structure of the residential members of Patent Document 2, there are two types of pulling flat hardware 4: one that joins two diagonal members 3 vertically in the intermediate floor and one that joins four diagonal members 3 vertically. On the rooftop floor, there are two types: one that joins one diagonal member 3 of the lower floor and one that joins two diagonal members 3. Four types of pulling flat hardware 4 are required, and there is a problem that its handling and management become complicated, similar to Patent Document 1.

[0006] Here, Patent Document 3 (JP 2006-37704 A) describes a structure that is composed of an upper frame member 2, a lower frame member 3, a pair of vertical frame members 4, 4, and a brace member 5, and each of the pair of vertical frame members 4, 4 is composed of four channel steel members combined together, and is vertically erected between the upper frame member 2 and the lower frame member 3 at a predetermined horizontal interval, and the brace members 5 (5A, 5B, 5C, 5D, 5E, 5F, 5G) are joined at both ends to the pair of vertical frame members 4, 4 by tapping screws S via joining members 7 provided on the outer surfaces of the webs of the pair of vertical frame members 4, 4, and a triangular shape is formed by the brace members 5, 5 adjacent to each other in the vertical direction and parts of the vertical frame members 4. The steel house has a structural plane P (P1, P2, etc.) formed, the connecting members 7 are made of short lightweight channel steel and are arranged with their grooves facing the brace material 5 side, and are fixed with tapping screws S with their webs 7a abutting the outer surfaces of the webs of the vertical frame material 4 (4c), the brace material 5 is made of lightweight channel steel, the outer width of the web of the brace material 5 is approximately equal to the inner width of the groove of the connecting member 7, one end of the brace material 5 is fitted into the groove of the connecting member 7, and the flange 5a of the brace material 5 and the flange 7b of the connecting member 7 are joined with tapping screws S. In Patent Document 3, the connecting member 7 is attached to the surface of the vertical frame member 4 that is perpendicular to the structural surface formed by the upper frame member 2, the lower frame member 3, and a pair of vertical frame members 4, 4, so as not to interfere with the attachment of surface materials, etc. along the structural surface.

[0007] However, in the steel house load-bearing wall structure of Patent Document 3, the connecting member 7 is fixed with a tapping screw S with its web 7a abutting against the outer surface of the web of the vertical frame member 4, and one end of the brace member 5 is fitted into a groove in the connecting member 7, and the flange 5a of the brace member 5 and the flange 7b of the connecting member 7 are joined with the tapping screw S. Therefore, the attachment angle of the upper and lower brace members 5 attached to the connecting member 7 is fixed, and the attachment position of the connecting member 7 to the vertical frame member 4 is also fixed. Therefore, the shape and size of the structural surface formed by the upper frame member 2, the lower frame member 3, and the pair of vertical frame members 4, 4 are fixed, and there is a problem in that the brace member 5 cannot be attached to a structural surface of any shape or size. Furthermore, in Patent Document 3, the brace material 5 is made of a channel steel, which has an outer width approximately equal to the inner width of the groove of the connecting member 7, and is limited in shape and size, which poses the problem that it is not possible to use a versatile brace that comes in a variety of sizes, such as a round steel brace.

[0008] Next, Patent Document 4 (Utility Model Registration No. 3124832) describes a structure formed by a combination of corner brackets 6 fixed along the corners of the base 3 and one column 4a and the beam 5 and one column 4a, an intermediate bracket 7 fixed midway along the other column 4b, and an upper brace member 8 placed at an angle between the upper corner bracket 6 and the intermediate bracket 7 and a lower brace member 8a placed at an angle between the lower corner bracket 6 and the intermediate bracket 7, and the intermediate bracket 7 is On the other hand, a flat U-shaped metal fitting 26 having a pair of side plates 25 facing each other on both sides of an attachment plate 24 is welded to the outer surface of a vertically long base plate 23 that is placed on the outer surface of the column 4b, and bolt holes 27 are provided in the base plate 23 and attachment plate 24 at a position midway between the top and bottom and between the side plates 25, and a square block 29 with a bolt hole 28 is fixed by welding to the back of the base plate 23, and bolt holes 30 are provided at the top and bottom of each of the side plates 25, in an earthquake-resistant reinforcement structure for a wall frame is disclosed.

[0009] However, the earthquake-resistant reinforcement structure of the wall frame in Patent Document 4 is limited to a structure in which diagonal bracing members 8, 8a are attached between the corner of the foundation 3 and one column 4a, and between the corner of the girder 5 and one column 4a, and halfway (at the middle) of the other column 4b, and it is not possible to attach a brace at any position on a structural surface of any size or shape. Furthermore, in Patent Document 4, the intermediate fitting 7 is formed by welding the flat U-shaped fitting 26 to the outer surface of the base plate 23, which results in a somewhat complicated structure and not only is it time-consuming to process, but the width of the connecting rings 39 of the upper and lower diagonal bracing members 8 and 8a attached to the intermediate fitting 7 is limited by the distance between the two side plates 25 of the flat U-shaped fitting 26, which creates the problem that the attachment portion cannot accommodate diagonal bracing members (braces) of any size (thickness).

[0010] Furthermore, Patent Document 5 (Japanese Unexamined Patent Application Publication No. 2022-155956) has a beam 11, a base 14, a pair of columns 12 and 13, and two braces 21 in a K shape when viewed from the front. At the central position of one column 13, a connecting fitting 50 is connected via four fixed means 40 with heads. Gusset plates 17 are attached to the corner portions 19 of the other column 12, the beam 11, and the base 14, respectively. Connection jigs 22 at both ends of the brace 21 are connected to the connecting fitting 50 and the gusset plate 17 via connection bolts 18. The connecting fitting 50 has a contact plate 51 in a rectangular shape in plan view that abuts against the side surface 13a of the column 13, a standing plate 52 that stands up from the contact plate 51, and a total of four reinforcing ribs 53 that project laterally from the left and right side surfaces (left and right wide surfaces) of the standing plate 52. A connection structure between the column and the brace is disclosed. However, the connection structure between the column and the brace in Patent Document 5 is limited to a structure in which the brace is connected to the central position of one column 13 and the corner portions 19 of the other column 12, the beam 11, and the base 14, similar to Patent Document 4, and cannot be a structure in which the brace is attached to an arbitrary position on a structural surface of any size and shape. Also, in Patent Document 5, the connecting fitting 50 has a complex structure having the contact plate 51, the standing plate 52, and the four reinforcing ribs 53, and there is a problem that it takes time and effort to process.

Prior Art Documents

Patent Documents

[0011]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Summary of the Invention

Problems to be Solved by the Invention

[0012] The problem that this invention aims to solve is to provide a brace mounting structure that can use a single type of brace fixing hardware to mount a brace at any position on the structural surface of a building of any shape or size between opposing members that make up the structural surface. [Means for solving the problem]

[0013] The invention of claim 1 provides a brace mounting structure in which a brace is attached via a brace fixing bracket between one opposing member and another opposing member that form the structural surface of a building, the brace fixing bracket having a connection part where two of the braces are connected at any angle, a plurality of the brace fixing brackets are attached to each of the one member and the other member, one or two braces are connected to the connection part of each of the brace fixing brackets attached to the one member and the brace fixing bracket attached to the other member, and the plurality of brace fixing brackets attached to the one member and the other member all have the same shape, size, and structure, thereby solving the above-mentioned problem.

[0014] The invention of claim 2 solves the above-mentioned problem by providing a mounting structure for a brace disposed below the secondary beams, wherein the first member is a first main beam, the other member is a second main beam located at the same height as the first main beam, the structural surface of the building is a horizontal structural surface formed by the first main beam, the second main beam, and a plurality of secondary beams installed so as to span vertically between the first main beam and the second main beam, and the brace fixing brackets are attached to a first vertical surface of the first main beam that is perpendicular to the horizontal structural surface, and a second vertical surface of the second main beam that is perpendicular to the horizontal structural surface, and the brace fixing brackets provide a mounting structure for a brace disposed below the secondary beams.

[0015] The invention according to claim 3 is such that the plurality of secondary horizontal members include a first secondary horizontal member disposed at the center of the first main horizontal member and the second main horizontal member, and a second secondary horizontal member and a third secondary horizontal member disposed on both sides of the first secondary horizontal member with the first secondary horizontal member therebetween. The horizontal planes include a first horizontal plane and a second horizontal plane. The first horizontal plane is formed by the first main horizontal member, the second main horizontal member, the first secondary horizontal member, and the second secondary horizontal member. The second horizontal plane is formed by the first main horizontal member, the second main horizontal member, the first secondary horizontal member, and the third secondary horizontal member. The brace fixing fitting is attached below the first secondary horizontal member on the first vertical surface and the second vertical surface, and the brace fixing fitting is provided with a brace mounting structure to which the brace for reinforcing the first horizontal plane and the brace for reinforcing the second horizontal plane are connected, thereby solving the above problems.

[0016] The invention according to claim 4 is such that the plurality of brace fixing fittings attached to the first vertical surface are attached at the same height position with reference to the upper end of the first vertical surface, and the plurality of brace fixing fittings attached to the second vertical surface are attached at the same height position with reference to the upper end of the second vertical surface, thereby providing a brace mounting structure to solve the above problems.

[0017] The invention according to claim 5 is such that the building structure further includes a third main horizontal member that is located at the same height as the main second horizontal member and faces the main second horizontal member, and a secondary horizontal member that is installed so as to span perpendicularly between the second main horizontal member and the third main horizontal member. The secondary horizontal member includes a fourth secondary horizontal member disposed at the center between the second main horizontal member and the third main horizontal member, and a fifth secondary horizontal member and a sixth secondary horizontal member disposed on both sides of the fourth secondary horizontal member with the fourth secondary horizontal member in between. A third horizontal structure is formed by the second main horizontal member, the third main horizontal member, the fourth secondary horizontal member, and the fifth secondary horizontal member, and a fourth horizontal structure is formed by the second main horizontal member, the third main horizontal member, the fourth secondary horizontal member, and the sixth secondary horizontal member. A brace fixing fitting is attached below the fourth secondary horizontal member on a third vertical plane that is perpendicular to the third horizontal structure of the third main horizontal member and on a fourth vertical plane that faces the second vertical plane and is perpendicular to the third horizontal structure of the second main horizontal member. The brace fixing fitting provides a brace mounting structure to which the brace for reinforcing the third horizontal structure and the brace for reinforcing the fourth horizontal structure are connected, thereby solving the above problems.

[0018] The invention according to claim 6 is such that one member is a first column assembled to the base, the other member is a second column assembled to the base, and the building structure is a vertical structure formed by the first column, the second column, the base, and a plurality of beams spanning between the first column and the second column. The brace fixing fitting provides a brace mounting structure attached to a first side surface of the first column facing the second column and a second side surface of the second column facing the first column, thereby solving the above problems.

[0019] The invention according to claim 7 is characterized in that the plurality of beams includes a main beam assembled on the upper surfaces of the first column and the second column, and a first intermediate beam assembled at an intermediate position in the vertical direction between the first column and the second column. The vertical plane includes a first vertical plane and a second vertical plane. The first vertical plane is formed by the first column, the second column, the base and the first intermediate beam, and the second vertical plane is formed by the first column, the second column, the first intermediate beam and the main beam. The brace fixing brackets are attached to the back sides of the first intermediate beams on the first side surface and the second side surface, and the brace fixing brackets are connected with a brace for reinforcing the first vertical plane and a brace for reinforcing the second vertical plane, thereby providing a brace mounting structure for solving the above problems.

[0020] The invention according to claim 8 is characterized in that the plurality of brace fixing brackets attached to the first side surface are attached at positions at the same distance from the front surface of the first column, and the plurality of brace fixing brackets attached to the second side surface are attached at positions at the same distance from the front surface of the second column, thereby providing a brace mounting structure for solving the above problems.

[0021] The invention according to claim 9 is characterized in that the plane of the building further includes a third column installed between the base and the main beam at a position facing the second column on the side opposite to the first column, and a second intermediate beam assembled at an intermediate position in the vertical direction between the second column and the third column. A third vertical plane is formed by the second column, the third column, the base and the second intermediate beam, and a fourth vertical plane is formed by the second column, the third column, the second intermediate beam and the main beam. The brace fixing brackets are attached to the back sides of the second intermediate beams on the third side surface of the third column facing the second column and the fourth side surface of the second column facing the second side surface, and the brace fixing brackets are connected with a brace for reinforcing the third vertical plane and a brace for reinforcing the fourth vertical plane. The brace mounting structure according to claim 7 is provided to solve the above problems.

Advantages of the Invention

[0022] In the brace mounting structure of the invention according to claim 1, a plurality of brace fixing brackets are respectively attached to one member and the other member, and one or two braces are connected to the connection part of the brace fixing bracket at an arbitrary angle. Since all the plurality of brace fixing brackets have the same shape, size and structure, the effect is that braces can be attached at arbitrary positions to the structural surfaces of buildings of arbitrary shapes and sizes using one type of brace fixing bracket.

[0023] In the brace mounting structure of the invention according to claim 2, further, the effect is that a brace for reinforcing the horizontal structural surface can be arranged below the secondary horizontal member by attaching the brace fixing bracket without protruding downward from the first main horizontal member and the second main horizontal member.

[0024] In the brace mounting structure of the invention according to claim 3, further, the effect is that the brace for reinforcing the first horizontal structural surface and the brace for reinforcing the second horizontal structural surface can be connected to the same brace fixing bracket.

[0025] In the brace mounting structure of the invention according to claim 4, further, the effect is that the heights from the upper ends of the first vertical surface and the second vertical surface of the brace fixing bracket are the same, facilitating the attachment work of the brace fixing bracket.

[0026] In the brace mounting structure of the invention according to claim 5, further, the effect is that braces for reinforcing the third horizontal structural surface and the fourth horizontal structural surface can be arranged by attaching the brace fixing bracket without protruding downward from the second main horizontal member and the third main horizontal member.

[0027] In the brace mounting structure of the invention according to claim 6, further, the effect is that a brace for reinforcing the vertical structural surface can be arranged by attaching the brace fixing bracket without protruding rearward from the first column and the second column.

[0028] In the brace mounting structure of the invention according to claim 7, there is further an effect that braces for reinforcing the first vertical plane and braces for reinforcing the second vertical plane can be connected to the same brace fixing fitting.

[0029] In the brace mounting structure of the invention according to claim 8, there is further an effect that the distances from the backs of the first column and the second column of the brace fixing fitting are the same, facilitating the attachment operation of the brace fixing fitting.

[0030] In the brace mounting structure of the invention according to claim 9, there is further an effect that the brace fixing fitting can be attached without protruding rearward from the second column and the third column, and braces for reinforcing the third vertical plane and the fourth vertical plane can be arranged.

Brief Description of the Drawings

[0031]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Embodiments for Carrying Out the Invention

[0032] [Configuration of Brace Mounting Structure] FIG. 1 is a plan view of the brace mounting structure of the present invention in a horizontal plane. FIGS. 2(a) and (b) are enlarged cross-sectional views taken along A-A and B-B of FIG. 1 respectively. FIGS. 3(a) and (b) are enlarged cross-sectional views taken along C-C and D-D of FIG. 1 respectively. FIG. 4 is a perspective view of the vicinity of the brace fixing bracket at the back center in the brace mounting structure shown in FIG. 1. FIG. 5 is a plan view of the brace mounting structure shown in FIG. 4. FIG. 6 is a front view of the brace mounting structure shown in FIG. 4. FIG. 7 is a perspective view of the brace mounting structure shown in FIG. 4 with bolts, screws, etc. removed from the brace fixing bracket. FIG. 8 is a perspective view of the brace fixing bracket shown in FIG. 4. FIGS. 9(a), (b), and (c) are a plan view, a front view, and a right side view of the brace fixing bracket shown in FIG. 4 respectively. In the figure, 1 is the brace mounting structure, 2A, 2B, 2C, 3A, 3B1, 3B2, and 3C are beams, 2Af is the front of beam 2A, 2Au is the top of beam 2A, 2Bf is the front of beam 2B, 2Br is the back of beam 2B, 2Bu is the top of beam 2B, 2Cr is the back of beam 2C, 2Cu is the top of beam 2C, 3B1b is the bottom of beam 3B1, 3B2b is the bottom of beam 3B2, 4, 4', 5, 5', 6, 6', 7, and 7' are braces, 4a1, 4a1', 4a2, 4a2', 5a1, 5a1', 5a2, 5a2', 6a1, 6a1', 6a2, 6a2', 7a1, 7a 1', 7a2, 7a2' are battledores, 4ah1, 5ah1 are bolt holes, 4b1, 4b1', 4b2, 4b2', 5b1, 5b1', 5b2, 5b2', 6b1, 6b1', 6b2, 6b2', 7b1, 7b1', 7b2, 7b2' are round steel bars, 4tb, 4tb', 5tb, 5tb', 6tb, 6tb', 7tb, 7tb' are turnbuckles, 10, 10', 20, 20', 30, 30', 40, 40', 50, 50', 60, 60' are brace fixing brackets, 11, 11', 21, 21', 31, 31', 41, 41 ', 51, 51', 61, 61' are connecting pieces, 11h1 is the first bolt hole, 11h2 is the second bolt hole, 12, 12', 22, 22', 32, 32', 42, 42', 52, 52', 62, 62' are mounting pieces, 12h1 is the left bolt hole, 12h2 is the right bolt hole, 12k is a notch, 12p is the left screw hole group, 12ph is the left screw hole, 12q is the right screw hole group, 12qh is the right screw hole, 13L is the left rising piece, 13R is the right rising piece, 14a is the left bolt, 15a is the right bolt, 14b, 15b are nuts, 16a is the first bolt, 17a is the second bolt 4 to 6, beam 3B1 is represented by a virtual two-dot chain line, and in FIG. 7, beam 3B1 is omitted.

[0033] In the brace mounting structure 1 shown in Fig. 1, the beams 2A and 2C are installed at the same height position (a position at the same height from the horizontal plane serving as a reference such as the base surface) on the upper surface of the column (not shown) with a space therebetween so that their axes (longitudinal axes) face the left - right direction (X - direction). The beam 3A is assembled in a right - angled or nearly right - angled state to the left - end side of the front surface 2Af of the beam 2A and the rear surface 2Cr of the beam 2C so that its axis faces the front - rear direction (Y - direction). The beam 3C is assembled in a right - angled or nearly right - angled state to the right - end side of the front surface 2Af of the beam 2A and the rear surface 2Cr of the beam 2C so that its axis faces the front - rear direction (Y - direction). The beam 2B is assembled in a right - angled or nearly right - angled state to the center in the front - rear direction of the right - hand side surface of the beam 3A and the left - hand side surface of the beam 3C so that its axis faces the left - right direction. The beam 3B1 is assembled in a right - angled or nearly right - angled state to the center in the left - right direction of the front surface 2Af of the beam 2A and the rear surface 2Br of the beam 2B so that its axis faces the front - rear direction. The beam 3B2 is assembled in a right - angled or nearly right - angled state to the center in the left - right direction of the rear surface 2Cr of the beam 2C and the front surface 2Bf of the beam 2B so that its axis faces the front - rear direction. In this case, the upper surfaces of each of the beams 2A, 2B, 2C, 3A, 3B1, 3B2, and 3C are made to be the same plane. And the beam 2A becomes the first main transverse member of the present invention, the beam 2B becomes the second main transverse member of the present invention, the beam 2C becomes the third main transverse member of the present invention. The beams 3A, 3B1, 3B2, and 3C become the secondary transverse members of the present invention and are installed so as to be spanned perpendicularly (including a nearly perpendicular state) to the beams 2A·2C and the beam 2B. The beam 3B1 becomes the first secondary transverse member of the present invention, the upper half of the beam 3A becomes the second secondary transverse member of the present invention, the upper half of the beam 3C becomes the third secondary transverse member of the present invention, the beam 3B2 becomes the fourth secondary transverse member of the present invention, the lower half of the beam 3A becomes the fifth secondary transverse member of the present invention, and the lower half of the beam 3C becomes the sixth secondary transverse member of the present invention. Also, the front surface 2Af of the beam 2A becomes the first vertical surface of the present invention, the rear surface 2Br of the beam 2B becomes the second vertical surface of the present invention, the rear surface 2Cr of the beam 2C becomes the third vertical surface of the present invention, and the front surface 2Bf of the beam 2B becomes the fourth vertical surface of the present invention. The beams 2A, 2B, 2C, 3A, 3B1, 3B2, and 3C are made of wooden materials such as cypress, Japanese cypress, and cedar, but materials other than wood, such as carbon steel and metals such as aluminum, may also be used. The first horizontal structural plane HD1 is formed by the left half of beam 2A, the left half of beam 2B, the upper half of beam 3A, and beam 3B1, the second horizontal structural plane HD2 is formed by the right half of beam 2A, the right half of beam 2B, beam 3B1, and the upper half of beam 3C, the third horizontal structural plane HD3 is formed by the left half of beam 2B, the left half of beam 2C, the lower half of beam 3A, and beam 3B2, and the fourth horizontal structural plane HD4 is formed by the right half of beam 2B, the right half of beam 2C, beam 3B2, and the lower half of beam 3C.

[0034] [1st horizontal plane HD1, 2nd horizontal plane HD2] A brace fixing bracket 10 is attached to the center of the front surface 2Af of the rear beam 2A, straddling the beam 3B1 below the beam 3B1 (details will be described later), a brace fixing bracket 40 is attached to the right of the beam 3A on the front surface 2Af, and a brace fixing bracket 50 is attached to the left of the beam 3C on the front surface 2Af (see Figures 1 and 2(a)). In this case, the height (distance from the upper surface 2Au to the bolt) of the bolt that secures the brace fixing brackets 10, 40, 50 to the front surface 2Af is the same h1, and the three brace fixing brackets 10, 40, 50 are attached at the same height relative to the upper surface 2Au (upper end of the front surface 2Af). A brace fixing bracket 60 is attached to the center of the back surface 2Br of the central beam 2B, below the beam 3B1, so as to straddle the beam 3B1, a brace fixing bracket 20 is attached to the right of the beam 3A on the back surface 2Br, and a brace fixing bracket 30 is attached to the left of the beam 3C on the back surface 2Br (see Figures 1 and 2(b)). In this case, too, the heights of the bolts that secure the brace fixing brackets 20, 30, and 60 to the rear surface 2Br (from the upper end of the rear surface 2Br) are all the same h1, and the three brace fixing brackets 20, 30, and 60 are attached at the same height relative to the upper surface 2Bu (the upper end of the rear surface 2Br). Note that the height h2 (the distance from the upper surface 2Au (upper surface 2Bu) to the bottom surface 3B1b) with reference to the upper surface 2Au (upper surface 2Bu) of the bottom surface 3B1b of the beam 3B1 is smaller than the height h1.

[0035] In the first horizontal plane HD1, the blade 4a1 of the brace 4 is attached with the round steel 4b1 on the lower side to the left side of the connecting piece 11 of the brace fixing fitting 10 (details will be described later), and the blade 4a2 of the brace 4 is attached with the round steel 4b2 on the lower side to the right side of the connecting piece 21 of the brace fixing fitting 20. The brace 4 composed of the blades 4a1, 4a2, the round steels 4b1, 4b2, the turnbuckle 4tb, etc. is connected to the connecting piece 11 of the brace fixing fitting 10 and the connecting piece 21 of the brace fixing fitting 20. Also, the blade 6a2 of the brace 6 is attached with the round steel 6b2 on the upper side to the right side of the connecting piece 41 of the brace fixing fitting 40, and the blade 6a1 of the brace 6 is attached with the round steel 6b1 on the upper side to the left side of the connecting piece 61 of the brace fixing fitting 60. The brace 6 composed of the blades 6a1, 6a2, the round steels 6b1, 6b2, the turnbuckle 6tb, etc. is connected to the connecting piece 41 of the brace fixing fitting 40 and the connecting piece 61 of the brace fixing fitting 60. In this case, the turnbuckle 4tb is located at a position closer to the brace fixing fitting 10 side from the center of the first horizontal plane HD1, and the turnbuckle 6tb is located at a position closer to the brace fixing fitting 40 side from the center of the first horizontal plane HD1, so that the turnbuckle 4tb and the turnbuckle 6tb do not intersect. In the second horizontal plane HD2, the blade 5a1 of the brace 5 is attached with the round steel 5b1 on the upper side to the right side of the connecting piece 11 of the brace fixing fitting 10, and the blade 5a2 of the brace 5 is attached with the round steel 5b2 on the upper side to the left side of the connecting piece 31 of the brace fixing fitting 30. The brace 5 composed of the blades 5a1, 5a2, the round steels 5b1, 5b2, the turnbuckle 5tb, etc. is connected to the connecting piece 11 of the brace fixing fitting 10 and the connecting piece 31 of the brace fixing fitting 30. Also, the vane plate 7a2 of the brace 7 is attached to the left side of the connecting piece 51 of the brace fixing fitting 50 with the round steel 7b2 facing downward, and the vane plate 7a1 of the brace 7 is attached to the right side of the connecting piece 61 of the brace fixing fitting 60 with the round steel 7b1 facing downward. The brace 7 composed of the vane plates 7a1, 7a2, round steels 7b1, 7b2, turnbuckle 7tb, etc. is connected to the connecting piece 51 of the brace fixing fitting 50 and the connecting piece 61 of the brace fixing fitting 60. Also in this case, the turnbuckle 5tb is located at a position closer to the brace fixing fitting 10 side from the center of the second horizontal plane HD2, and the turnbuckle 7tb is located at a position closer to the brace fixing fitting 50 side from the center of the second horizontal plane HD2, so that the turnbuckle 5tb and the turnbuckle 7tb do not intersect. Thereby, the first horizontal plane HD1 is reinforced by the two braces 4 and 6 spanned between the beams 2A and 2B via the four brace fixing fittings 10, 20, 40, and 60, and the second horizontal plane HD2 is reinforced by the two braces 5 and 7 spanned between the beams 2A and 2B via the four brace fixing fittings 10, 30, 50, and 60. In this case, the brace 4 for reinforcing the first horizontal plane HD1 and the brace 5 for reinforcing the second horizontal plane HD2 are connected to the brace fixing fitting 10 attached below the beam 3B1 on the front surface 2Af of the beam 2A, and the brace 6 for reinforcing the first horizontal plane HD1 and the brace 7 for reinforcing the second horizontal plane HD2 are connected to the brace fixing fitting 60 attached below the beam 3B1 on the rear surface 2Br of the beam 2B.

[0036] As shown in Fig. 2(a), since the heights (the heights of the centers of the left bolt hole and the right bolt hole) based on the upper surfaces 2Au of the respective brace fixing fittings 10, 40, and 50 attached to the front surface 2Af of the beam 2A are all the same h1, the centers of the round steel 4b1 of the brace 4 and the round steel 7b2 of the brace 7 are at the same height h3, and the centers of the round steel 5b1 of the brace 5 and the round steel 6b2 of the brace 6 are at the same height h3'. Further, as shown in Fig. 2(b), since the heights of the upper surfaces 2Bu of the respective brace fixing brackets 20, 30, 60 attached to the back surface 2Br of the beam 2B are all the same h1, the centers of the round bars 4b2 of the brace 4 and the centers of the round bars 7b1 of the brace 7 are at the same height h3, and the centers of the round bars 5b2 of the brace 5 and the centers of the round bars 6b1 of the brace 6 are at the same height h3'. Since the upper surface 2Au of the beam 2A and the upper surface 2Bu of the beam 2B are at the same height, the heights of the braces 4 and 7 with respect to the upper surface 2Au (2Bu) are the same h3, the heights of the braces 5 and 6 are the same h3', and the height h3 is greater than the height h3' by the sum of the diameters of the respective round bars and the thicknesses of the respective fin plates. And in the first horizontal plane HD1, since there is a gap corresponding to the thickness of the fin plate 4a1 between the round bar 4b2 of the intersecting brace 4 and the round bar 6b1 of the brace 6, the round bar 4b2 and the round bar 6b1 do not interfere (come into contact), there is no wear of the round bar 4b2 and the round bar 6b1 due to interference (contact), and a decrease in the load-bearing capacity of the braces 4 and 6 is prevented. Similarly, in the second horizontal plane HD2, since there is a gap corresponding to the thickness of the fin plate 5a1 or the like between the round bar 5b2 of the intersecting brace 5 and the round bar 7b1 of the brace 7, the round bar 5b2 and the round bar 7b1 do not interfere (come into contact), there is no wear of the round bar 5b2 and the round bar 7b1 due to interference (contact), and a decrease in the load-bearing capacity of the braces 5 and 7 is prevented. In particular, when the diameters of the respective round bars of the braces 4, 5, 6, and 7 are not so large (for example, the diameter of the round bar is 6 to 16 mm), since the decrease in the load-bearing capacity of the brace due to wear of the round bar becomes large, the effect of preventing the decrease in the load-bearing capacity of the brace by avoiding interference between the intersecting braces as described above becomes large.

[0037] [Third horizontal plane HD3, Fourth horizontal plane HD4] The configurations of the third horizontal plane HD3 and the fourth horizontal plane HD4 are the same as the configurations of the first horizontal plane HD1 and the second horizontal plane HD2. Specifically, a brace fixing fitting 10' is attached to the center of the rear surface 2Cr of the front beam 2C so as to straddle the beam 3B2 below the beam 3B2. A brace fixing fitting 40' is attached to the right adjacent to the beam 3A on the rear surface 2Cr, and a brace fixing fitting 50' is attached to the left adjacent to the beam 3C on the rear surface 2Cr (see FIGS. 1 and 3(a)). In this case, the heights (the distances from the upper surface 2Cu (the upper end of the rear surface 2Cr) to the bolts) of the bolts fixing the brace fixing fittings 10', 40', and 50' to the rear surface 2Cr are all the same h1, and the three brace fixing fittings 10', 40', and 50' are attached at the same height positions with reference to the upper surface 2Cu (the upper end of the rear surface 2Cr). A brace fixing fitting 60' is attached to the center of the front surface 2Bf of the central beam 2B so as to straddle the beam 3B2 below the beam 3B2. A brace fixing fitting 20' is attached to the right adjacent to the beam 3A on the front surface 2Bf, and a brace fixing fitting 30' is attached to the left adjacent to the beam 3C on the front surface 2Bf. Also in this case, the heights from the upper surface 2Bu (the upper end of the front surface 2Bf) of the bolts fixing the brace fixing fittings 20', 30', and 60' to the front surface 2Bf are all the same h1, and the three brace fixing fittings 20', 30', and 60' are attached at the same height positions with reference to the upper surface 2Bu (the upper end of the front surface 2Bf). By the way, although the height (the length in the Z direction) of the beam 3B2 is larger than the height of the beam 3B1, the mounting pieces 12', 62' of the brace fixing fittings 10', 60' are provided with the same notches as the notch 12k of the mounting piece 12 of the brace fixing fitting 10. By allowing the bottom surface 3B2b of the beam 3B2 to sink into the concave portions of these notches, the brace fixing fittings 10', 60' can be attached at the same height positions as the brace fixing fittings 10, 60. Since the height (the length in the Z direction) of the beam 3B2 is larger than the height of the beam 3B1, the height h2' (the distance from the upper surface 2Cu (the upper surface 2Bu) to the bottom surface 3B2b) with reference to the upper surface 2Cu (the upper surface 2Bu) of the bottom surface 3B2b of the beam 3B2 is larger than the height h1.

[0038] In the third horizontal structural face HD3, the battledore 4a1' of the brace 4' is attached to the left side of the connecting piece 11' of the brace fixing bracket 10' with the round steel 4b1' on the bottom, and the battledore 4a2' of the brace 4' is attached to the right side of the connecting piece 21' of the brace fixing bracket 20' with the round steel 4b2' on the bottom, and the brace 4' consisting of the battledores 4a1', 4a2', the round steel 4b1', 4b2', the turnbuckle 4tb', etc. is connected to the connecting piece 11' of the brace fixing bracket 10' and the connecting piece 21' of the brace fixing bracket 20'. Furthermore, the battledore 6a2' of the brace 6' is attached to the right side of the connecting piece 41' of the brace fixing bracket 40' with the round steel 6b2' on the upper side, and the battledore 6a1' of the brace 6' is attached to the left side of the connecting piece 61' of the brace fixing bracket 60' with the round steel 6b1' on the upper side, and the brace 6' consisting of the battledores 6a1', 6a2', the round steel 6b1', 6b2', the turnbuckle 6tb', etc. is connected to the connecting piece 41' of the brace fixing bracket 40' and the connecting piece 61' of the brace fixing bracket 60'. In this case, turnbuckle 4tb' is located closer to the brace fixing bracket 10' side from the center of the third horizontal structural face HD3, and turnbuckle 6tb' is located closer to the brace fixing bracket 40' side from the center of the third horizontal structural face HD3, so that turnbuckle 4tb' and turnbuckle 6tb' do not intersect. In the fourth horizontal structural face HD4, the battledore 5a1' of the brace 5' is attached to the right side of the connecting piece 11' of the brace fixing bracket 10' with the round steel 5b1' on the upper side, and the battledore 5a2' of the brace 5' is attached to the lower left corner of the connecting piece 31' of the brace fixing bracket 30' with the round steel 5b2' on the upper side, and the brace 5' consisting of the battledores 5a1', 5a2', the round steel 5b1', 5b2', the turnbuckle 5tb', etc. is connected to the connecting piece 11' of the brace fixing bracket 10' and the connecting piece 31' of the brace fixing bracket 30'. Further, the blade plate 7a2' of the brace 7' is attached to the left side of the connection piece 51' of the brace fixing fitting 50' with the round steel 7b2' facing downward, and the blade plate 7a1' of the brace 7' is attached to the right side of the connection piece 61' of the brace fixing fitting 60' with the round steel 7b1' facing downward. The brace 7' composed of the blade plates 7a1', 7a2', the round steels 7b1', 7b2', the turnbuckle 7tb', etc. is connected to the connection piece 51' of the brace fixing fitting 50' and the connection piece 61' of the brace fixing fitting 60'. Also in this case, the turnbuckle 5tb' is located at a position closer to the brace fixing fitting 10' side from the center of the fourth horizontal plane HD4, and the turnbuckle 7tb' is located at a position closer to the brace fixing fitting 50' side from the center of the fourth horizontal plane HD4, so that the turnbuckle 5tb' and the turnbuckle 7tb' do not intersect. Thereby, the third horizontal plane HD3 is reinforced by the two braces 4' and 6' spanned between the beam 2C and the beam 2B via the four brace fixing fittings 10', 20', 40', 60', and the fourth horizontal plane HD4 is reinforced by the two braces 5' and 7' spanned between the beam 2C and the beam 2B via the four brace fixing fittings 10', 30', 50', 60'. In this case, the brace 4' for reinforcing the third horizontal plane HD3 and the brace 5' for reinforcing the fourth horizontal plane HD4 are connected to the brace fixing fitting 10' attached below the beam 3B2 on the back surface 2Cr of the beam 2C, and the brace 6' for reinforcing the third horizontal plane HD3 and the brace 7' for reinforcing the fourth horizontal plane HD4 are connected to the brace fixing fitting 60' attached below the beam 3B2 on the front surface 2Bf of the beam 2B.

[0039] As shown in Fig. 3(a), since the heights (the heights of the centers of the left bolt hole and the right bolt hole) based on the upper surfaces 2Cu of the respective brace fixing fittings 10', 40', 50' attached to the back surface 2Cr of the beam 2C are all the same h1, the centers of the round steel 4b1' of the brace 4' and the round steel 7b2' of the brace 7' are at the same height h3, and the centers of the round steel 5b'1 of the brace 5' and the round steel 6b2' of the brace 6' are at the same height h3'. Furthermore, as shown in Figure 3(b), the heights of the brace fixing brackets 20', 30', and 60' attached to the front 2Bf of the beam 2B relative to the top surface 2Bu are all the same h1, so the center of the round steel 4b2' of brace 4' and the center of the round steel 7b1' of brace 7' are the same height h3, and the center of the round steel 5b2' of brace 5' and the center of the round steel 6b1' of brace 6' are the same height h3'. Since the upper surface 2Cu of beam 2C and the upper surface 2Bu of beam 2B are at the same height, the heights of braces 4' and 7' based on the upper surface 2Cu (2Bu) are the same h3, and the heights of braces 5' and 6' are the same h3', and height h3 is greater than height h3' by the amount obtained by adding the diameter of each round steel bar to the thickness of each battledore. Furthermore, in the third horizontal structural face HD3, there is a gap the thickness of the battledore 4a1' between the round steel 4b2' of the intersecting brace 4' and the round steel 6b1' of the intersecting brace 6', so the round steel 4b2' and the round steel 6b1' do not interfere (contact), and there is no wear on the round steel 4b2' and the round steel 6b1' due to interference (contact), preventing a decrease in the strength of the braces 4' and 6'. Similarly, in the fourth horizontal structural member HD4, there is a gap the thickness of the battledore 5a1' or the like between the round steel 5b2' of the intersecting brace 5' and the round steel 7b1' of the brace 7', so the round steel 5b2' and the round steel 7b1' do not interfere (contact), and there is no wear on the round steel 5b2' and the round steel 7b1' due to interference (contact), preventing a decrease in the strength of the braces 5' and 7'. In particular, if the diameter of each round bar in braces 4', 5', 6', and 7' is not very large (for example, if the diameter of the round bars is 6 to 16 mm), the strength of the brace will decrease significantly due to wear of the round bars, so avoiding interference between intersecting braces as described above will be more effective in preventing a decrease in the strength of the brace. In the brace mounting structure 1 shown in Fig. 1, the round steel bars of the braces 4, 4', 7, and 7' are positioned on the lower surface of the vane plate, and the round steel bars of the braces 5, 5', 6, and 6' are positioned on the upper surface of the vane plate so that the intersecting round steel bars do not interfere. However, the round steel bars of all the braces 4, 4', 5, 5', 6, 6', 7, and 7' may be positioned on the lower surface of the vane plate, or the round steel bars of all the braces may be positioned on the upper surface of the vane plate. In this case, the round steel bars of the intersecting braces interfere (come into contact) and wear occurs. However, by increasing the diameter of the round steel bars (for example, making the diameter of the round steel bars 18 mm or more), it is possible to prevent the yield strength from decreasing significantly even if the round steel bars are slightly worn at the contact portion.

[0040] [Brace] Here, the braces and brace fixing brackets will be specifically described. First, the braces will be described. The brace 4 that reinforces the first horizontal plane HD1 is a round steel brace and includes metallic vane plates 4a1, 4a2, round steel bars 4b1, 4b2, and a turnbuckle 4tb. In the vane plate 4a1, a bolt hole 4ah1 is provided on one end side, one end of the round steel bar 4b1 is fixed to one surface on the other end side by welding or the like, and a first bolt 16a is inserted through the bolt hole 4ah1 (see Figs. 6 and 7). Similarly, in the vane plate 4a2, a bolt hole identical to the bolt hole 4ah1 is provided on one end side, one end of the round steel bar 4b2 is fixed to one surface on the other end side by welding or the like, and the same bolt as the first bolt 16a is inserted through the bolt hole. Then, the other end of the round steel bar 4b1 and the other end of the round steel bar 4b2 are connected by the turnbuckle 4tb. The brace 5 that reinforces the second horizontal plane HD2 is also the same round steel brace as the brace 4 and includes metallic vane plates 5a1, 5a2, round steel bars 5b1, 5b2, and a turnbuckle 5tb. In the vane plate 5a1, a bolt hole 5ah1 is provided on one end side in the same manner as the vane plate 4a1, one end of the round steel bar 5b1 is fixed to one surface on the other end side by welding or the like, and a first bolt 17a is inserted through the bolt hole 5ah1 (see Figs. 6 and 7). Also in the battens 5a2, bolt holes identical to the bolt holes 5ah1 are provided on one end side, one end of the round steel 5b2 is fixed to one surface on the other end side by welding or the like, and bolts identical to the first bolts 17a are inserted into the bolt holes. Then, the other end of the round steel 5b1 and the other end of the round steel 5b2 are connected by a turnbuckle 5tb.

[0041] The other braces 6 and 7 that reinforce the first horizontal plane HD1 and the second horizontal plane HD2 are also the same round steel braces as the braces 4 and 5, and are respectively provided with battens 6a1·6a2, 7a1·7a2, round steels 6b1·6b2, 7b1·7b2, turnbuckles 6tb, 7tb. However, these are the same as the battens, round steels, and turnbuckles of the braces 4 and 5. Also, the braces 4', 5', 6', 7' that reinforce the third horizontal plane HD3 and the fourth horizontal plane HD4 are also the same round steel braces as the braces 4, 5, 6, 7, and are respectively provided with battens 4a1'·4a2', 5a1'·5a2', 6a1'·6a2', 7a1'·7a2', round steels 4b1'·4b2', 5b1'·5b2', 6b1'·6b2', 7b1'·7b2', turnbuckles 4tb', 5tb', 6tb', 7tb'. However, these are also the same as the battens, round steels, and turnbuckles of the braces 4, 5, 6, 7. Note that the brace of the present invention is not limited to a round steel brace, and any general-purpose steel frame brace such as an angle steel brace, a channel steel brace, a CT steel brace, or a flat steel brace may be used. Also, the fixing of one end of the batten and the round steel is not limited to welding, and an insertion cylinder may be attached to the batten and one end of the round steel may be fitted into the insertion cylinder. Furthermore, one end of the brace may be fixed to another plate-shaped or cylindrical metalware instead of the batten.

[0042] [Brace fixing fitting] Next, the brace fixing fitting will be described. As shown in FIGS. 8 and 9, the brace fixing fitting 10 is composed of a connection piece 11, a mounting piece 12, a left rising piece 13L, and a right rising piece 13R, and has a long shape in the left-right direction (X direction). The connecting piece 11 is the connecting part of the present invention and has a horizontally long rectangular shape. A first bolt hole 11h1 and a second bolt hole 11h2 are provided on the left end side (a position slightly to the right of the left end) and the right end side (a position slightly to the left of the right end) of the connecting piece 11, respectively, and a first bolt 16a and a second bolt 17a are inserted into the first bolt hole 11h1 and the second bolt hole 11h2. The mounting piece 12 has a shape that is long in the left-right direction (X direction), and a left bolt hole 12h1 and a right bolt hole 12h2 are provided at the upper left and right sides of the mounting piece 12, respectively. Below the left bolt hole 12h1, a left screw hole group 12p consisting of six left screw holes 12ph is provided, and below the right bolt hole 12h2, a right screw hole group 12q consisting of six right screw holes 12qh is provided. A left bolt 14a and a right bolt 15a are inserted through the left bolt hole 12h1 and the right bolt hole 12h2, and a left screw 18a and a right screw 19a are inserted through the left screw hole 12ph and the right screw hole 12qh. The left screw 18a and the right screw 19a may be wood screws, coarse thread screws, screws for hard wood, universal screws, screws for special wood, lag screws, or the like. In addition, a rectangular (horizontally elongated rectangular) notch 12k is provided on the end side of the mounting piece 12 in the vertical direction (Z direction, short direction of the main girder 2) between the left bolt hole 12h1 and the right bolt hole 12h2, and the left-right width (length) w1 of the notch 12k is larger than the left-right length w2 of the beam 3B1 (see Figure 6). The left rising piece 13L is approximately vertically elongated and rectangular in shape and is formed to rise from the rear left end of the connecting piece 11 and the left end of the mounting piece 12, while the right rising piece 13R is also approximately vertically elongated and rectangular in shape and is formed to rise from the rear right end of the connecting piece 11 and the right end of the mounting piece 12. In this case, the connection piece 11, the mounting piece 12, the left rising piece 13L and the right rising piece 13R are formed by bending a single metal plate, for example a steel plate, with the mounting piece 12 bent at a right angle (with an error of a few degrees) to the connection piece 11, and the left rising piece 13L and the right rising piece 13R bent at a right angle (with an error of a few degrees) to the connection piece 11 and the mounting piece 12. The left rising piece 13L and the right rising piece 13R provide a strong resistance to a large combined force of bending, tension, shear, torsion, etc. acting on the connecting piece 11 and the mounting piece 12. The holes provided in the left and right corners of the connection piece 11 near the mounting piece 12 are holes used when manufacturing the connection piece 11.

[0043] The other brace fixing brackets 20, 30, 40, 50, 60 on the first horizontal structural face HD1 and the second horizontal structural face HD2 also have the same connecting pieces 21, 31, 41, 51, 61, attaching pieces 22, 32, 42, 52, 62, left rising pieces, and right rising pieces as the connecting piece 11, mounting piece 12, left rising piece 13L, and right rising piece 13R of the brace fixing bracket 10. Each of the connection pieces 21, 31, 41, 51, and 61 is provided with a first bolt hole and a second bolt hole that are the same as the first bolt hole 11h1 and the second bolt hole 11h2 of the connection piece 11, a notch that is the same as the notch 12k of the connection piece 11, and a left screw hole group and a right screw hole group that are the same as the left screw hole group 12p and the right screw hole group 12q of the connection piece 11. Furthermore, each of the mounting pieces 22, 32, 42, 52, and 62 is provided with a left bolt hole and a right bolt hole that are the same as the left bolt hole 12h1 and the right bolt hole 12h2 of the mounting piece 12. As a result, the brace fixing members 10, 20, 30, 40, 50, and 60 all have the same shape, size, and structure. Similarly, the brace fixing brackets 10', 20', 30', 40', 50', 60' in the third horizontal structural face HD3 and the fourth horizontal structural face HD4 have the same connecting pieces 21', 31', 41', 51', 61', mounting pieces 22', 32', 42', 52', 62', left rising piece, and right rising piece as the connecting piece 11, mounting piece 12, left rising piece 13L, and right rising piece 13R of the brace fixing bracket 10. Each of the connection pieces 11', 21', 31', 41', 51', and 61' is provided with a first bolt hole and a second bolt hole that are the same as the first bolt hole 11h1 and the second bolt hole 11h2 of the connection piece 11, a notch that is the same as the notch 12k of the connection piece 11, and a left screw hole group and a right screw hole group that are the same as the left screw hole group 12p and the right screw hole group 12q of the connection piece 11. Furthermore, each of the mounting pieces 12', 22', 32', 42', 52', and 62' has a left bolt hole and a right bolt hole that are the same as the left bolt hole 12h1 and the right bolt hole 12h2 of the mounting piece 12. As a result, the brace fixing brackets 10, 10', 20, 20', 30, 30', 40, 40', 50, 50', 60, 60' all have the same shape, size and structure.

[0044] [Installation of brace fixing brackets] The installation of the brace fixing bracket will now be described. First, the attachment of the brace fixing metal fittings 10, 40, 50 to the front face 2Af of the beam 2A will be described. The beam 2A has Y-direction through holes that penetrate the beam 2A from the front 2Af to the back at predetermined positions below the beam 3B1, to the right of the beam 3A, and to the left of the beam 3C, at a certain height (distance from the top surface 2Au) h1 based on the top surface 2Au, for attaching the brace fixing brackets 10, 40, and 50. First, the back surface of the mounting piece 12 of the brace fixing bracket 10 is placed in a predetermined position below the beam 3B1 on the front surface 2Af, and the brace fixing bracket 10 is positioned so that the left bolt hole 12h1 and the right bolt hole 12h2 of the mounting piece 12 align with these respective through holes (see Figure 6). In this state, the left bolt 14a and the right bolt 15a are inserted into the left bolt hole 12h1, the right bolt hole 12h2 and the above-mentioned through holes of the beam 2A, respectively, and the nut 14b is screwed onto the threaded portion at the tip end of the left bolt 14a, and the nut 15b is screwed onto the threaded portion at the tip end of the right bolt 15a, thereby fixing the mounting piece 12 of the brace fixing bracket 10 to the beam 2A. After this, left screws 18a are screwed into the beam 2A through each of the left screw holes 12ph of the left screw hole group 12p of the mounting piece 12, and right screws 19a are screwed into the beam 2A through each of the right screw holes 12qh of the right screw hole group 12q of the mounting piece 12. As a result, the mounting piece 12 of the brace fixing bracket 10 is firmly fixed to the front surface 2Af of the beam 2A by the left bolt 14a and nut 14b, the right bolt 15a and nut 15b, the left screw group 18 (six left screws 18a screwed into the left screw hole group 12p), and the right screw group 19 (six right screws 19a screwed into the right screw hole group 12q). Next, the back surface of the mounting piece 42 of the brace fixing bracket 40 is placed in a designated position on the front surface 2Af adjacent to the beam 3A on the right side, and the brace fixing bracket 40 is positioned so that the left and right bolt holes of the mounting piece 42 match the pre-made through holes.In the same manner as the brace fixing bracket 10, the mounting piece 42 of the brace fixing bracket 40 is fixed to the front surface 2Af of the beam 2A using a left bolt, a right bolt, a nut, a group of left screws, and a group of right screws. Similarly, the back surface of the mounting piece 52 of the brace fixing bracket 50 is placed in a designated position on the front surface 2Af, adjacent to the beam 3C on the left side, and the brace fixing bracket 50 is positioned so that the left and right bolt holes of the mounting piece 52 match the pre-made through holes. In the same manner as the brace fixing brackets 10 and 40, the mounting piece 52 of the brace fixing bracket 50 is fixed to the front surface 2Af of the beam 2A using a left bolt, a right bolt, a nut, a group of left screws, and a group of right screws. In this way, the installation of the brace fixing metal fittings 10, 40, 50 to the front surface 2Af of the beam 2A is completed.

[0045] In this case, when installing brace fixing bracket 10 and fixing mounting piece 12 to front surface 2Af of beam 2A, first left bolt 14a and nut 14b and right bolt 15a and nut 15b are used to position and fix mounting piece 12 to front surface 2Af of beam 2A, and then left screw 18a and right screw 19a can be easily screwed into beam 2A through left screw hole 12ph and right screw hole 12qh, improving the ease of positioning brace fixing bracket 10 and reducing the burden on the worker, thereby reducing the risk of the worker falling off, particularly when working at height. Similarly, when installing the brace fixing brackets 40, 50, the workability of positioning the brace fixing brackets 40, 50 is improved and the burden on the worker is reduced. In addition, a notch 12k is provided in the attachment piece 12 of the brace fixing fitting 10. Since the width w1 of the notch 12k in the left - right direction is larger than the length w2 of the beam 3B1 in the left - right direction, even if the length of the beam 3B1 in the up - down direction (Z - direction) is different and the height h2 of the bottom surface 3B1b of the beam 3B1 (the distance from the upper surface 2Au to the bottom surface 3B) with respect to the upper surface 2Au of the beam 2A is different, by changing the distance between the notch 12k and the bottom surface 3B1b of the beam 3B1, the attachment piece 12 can be fixed to the front surface 2Af of the beam 2A at a constant height h1 (a constant distance from the upper surface 2Au) with respect to the upper surface 2Au of the beam 2A without interfering with the beam 3B1 (see Fig. 6).

[0046] Next, the attachment of the brace fixing fittings 10', 40', 50' to the rear surface 2Cr of the beam 2C will be described. In the beam 2C, through - holes for attaching the brace fixing fittings 10', 40', 50' are provided at the same positions as those of the beam 2A in the up - down direction (Z - direction) and the left - right direction (X - direction), that is, at a constant height h1 (the distance from the upper surface 2Cu) with respect to the upper surface 2Cu, below the beam 3B2, to the right of the beam 3A, and to the left of the beam 3C at a predetermined position. In the attachment of the brace fixing fitting 10', the attachment piece 12' is applied to a predetermined position below the beam 3B2 on the rear surface 2Cr of the beam 2C, and the brace fixing fitting 10' is positioned so that the left bolt hole and the right bolt hole of the attachment piece 12' coincide with the pre - provided through - holes. In the same manner as the brace fixing fitting 10, the attachment piece 12' of the brace fixing fitting 10' is fixed to the rear surface 2Cr of the beam 2C with left bolts, right bolts, nuts, a left screw group, and a right screw group. In the attachment of the brace fixing fitting 40', the rear surface of the attachment piece 42' is applied to a predetermined position to the right of the beam 3A on the rear surface 2Cr, and the brace fixing fitting 40' is positioned so that the left bolt hole and the right bolt hole of the attachment piece 42' coincide with the pre - provided through - holes. In the same manner as the brace fixing fitting 40, the attachment piece 42 of the brace fixing fitting 40 is fixed to the rear surface 2Cr of the beam 2C with left bolts, right bolts, nuts, a left screw group, and a right screw group. In the installation of the brace fixing fitting 50', the back surface of the mounting piece 52' is applied to a predetermined position adjacent to the left of the beam 3C on the back surface 2Cr, and the brace fixing fitting 50' is positioned so that the left bolt hole and the right bolt hole of the mounting piece 52' coincide with the through holes provided in advance. The mounting piece 52' of the brace fixing fitting 50' is fixed to the back surface 2Cr of the beam 2C with nuts, left screw groups, and right screw groups that are mounted at the same positions in the vertical and horizontal directions in the same manner as the brace fixing fitting 50. Thus, the installation of the brace fixing fittings 10', 40', and 50' to the back surface 2Cr of the beam 2C is completed.

[0047] Finally, in the beam 2B, the installation of the brace fixing fittings 60, 20, and 30 to the back surface 2Br and the installation of the brace fixing fittings 60', 20', and 30' to the front surface 2Bf will be described. In the beam 2B, through holes for installing the brace fixing fittings 60, 20, 30 (60', 20', 30') are provided at the same positions as the beam 2A (2C) in the vertical direction (Z direction) and the horizontal direction (X direction), that is, at a certain height (distance from the upper surface 2Bu) h1 with reference to the upper surface 2Bu, below the beam 3B1 (3B2), adjacent to the right of the beam 3A, and adjacent to the left of the beam 3C at a predetermined position. Since the brace fixing fitting 60 attached below the beam 3B1 on the back surface 2Br and the brace fixing fitting 60' attached below the beam 3B2 on the front surface 2Bf are attached at the same positions in the vertical and horizontal directions, they are attached simultaneously with the same left bolt, right bolt, and nut. Specifically, the mounting piece 62 of the brace fixing fitting 60 is applied to a predetermined position below the beam 3B1 on the back surface 2Br of the beam 2B, and the brace fixing fitting 60 is positioned so that the left bolt hole and the right bolt hole of the mounting piece 62 coincide with the through holes provided in advance. The left bolt and the right bolt are inserted from the left bolt hole and the right bolt hole of the brace fixing fitting 60 into the through holes of the beam 2B. The left bolt hole and the right bolt hole of the mounting piece 62' of the brace fixing fitting 60' are fitted into the tip portions of the left bolt and the right bolt protruding to the front surface 2Bf side. Nuts are screwed onto the left bolt and the right bolt, and the mounting piece 62 and the mounting piece 62' are simultaneously fixed to the back surface 2Br and the front surface 2Bf of the beam 2B with the same left bolt, right bolt, and nut.

[0048] The brace fixing brackets 20 attached to the right adjacent side of the beam 3A on the back surface 2Br and the brace fixing brackets 20' attached to the right adjacent side of the beam 3A on the front surface 2Bf are also simultaneously attached to the same positions with the same left bolts, right bolts, and nuts in the same manner as the brace fixing brackets 60 and 60'. That is, the attachment piece 22 of the brace fixing bracket 20 is applied to a predetermined position on the right adjacent side of the beam 3A on the back surface 2Br of the beam 2B, and the brace fixing bracket 20 is positioned so that the left bolt hole and the right bolt hole of the attachment piece 22 coincide with the through holes provided in advance. The left bolt and the right bolt are inserted from the left bolt hole and the right bolt hole of the brace fixing bracket 20 into the through holes of the beam 2B, and the left bolt holes and the right bolt holes of the attachment piece 22' of the brace fixing bracket 20' are fitted into the tip portions of the left bolt and the right bolt protruding to the front surface 2Bf side. Nuts are screwed onto the left bolt and the right bolt, and the attachment piece 22 and the attachment piece 22' are simultaneously fixed to the back surface 2Br and the front surface 2Bf of the beam 2B with the same left bolt, right bolt, and nut. The brace fixing brackets 30 attached to the left adjacent side of the beam 3C on the back surface 2Br and the brace fixing brackets 30' attached to the left adjacent side of the beam 3C on the front surface 2Bf are also simultaneously attached to the same positions with the same left bolts, right bolts, and nuts in the same manner as the brace fixing brackets 60 and 60'. That is, the attachment piece 32 of the brace fixing bracket 30 is applied to a predetermined position on the left adjacent side of the beam 3C on the back surface 2Br of the beam 2B, and the brace fixing bracket 30 is positioned so that the left bolt hole and the right bolt hole of the attachment piece 32 coincide with the through holes provided in advance. The left bolt and the right bolt are inserted from the left bolt hole and the right bolt hole of the brace fixing bracket 30 into the through holes of the beam 2B, and the left bolt holes and the right bolt holes of the attachment piece 32' of the brace fixing bracket 30' are fitted into the tip portions of the left bolt and the right bolt protruding to the front surface 2Bf side. Nuts are screwed onto the left bolt and the right bolt, and the attachment piece 32 and the attachment piece 32' are simultaneously fixed to the back surface 2Br and the front surface 2Bf of the beam 2B with the same left bolt, right bolt, and nut. Thereby, the attachment of the brace fixing brackets 60, 20, and 30 to the back surface 2Br of the beam 2B and the attachment of the brace fixing brackets 60', 20', and 30' to the front surface 2Bf of the beam 2B are completed.

[0049] [Attachment of Brace] As described above, after attaching the brace fixing brackets 10, 40, 50 to the front surface 2Af of the beam 2A, the brace fixing brackets 10', 40', 50' to the rear surface 2Cr of the beam 2C, and the brace fixing brackets 60, 20, 30 and 60', 20', 30' to the rear surface 2Br and the front surface 2Bf of the beam 2B, connect the braces to the connection pieces of each brace fixing bracket. When connecting the brace 4 to the brace fixing bracket 10 (connection piece 11) and the brace fixing bracket 20 (connection piece 21), at one end of the brace 4, with the surface where the round steel 4b1 of the vane 4a1 is fixed facing downward, align the bolt hole 4ah1 of the vane 4a1 with the first bolt hole 11h1 of the connection piece 11, apply the lower surface of the vane 4a1 to the upper surface of the connection piece 11, insert the first bolt 16a through the bolt hole 4ah1 and the first bolt hole 11h1, thread the nut 16b onto the threaded portion on the tip side of the first bolt 16a, and fix the vane 4a1 to the connection piece 11 (see FIGS. 6 and 7). Similarly, at the other end of the brace 4, fix the vane 4a2 in a state where the surface where the round steel 4b2 of the vane 4a2 is fixed faces downward to the connection piece 21 of the brace fixing bracket 20 with the first bolt and nut. Thereby, the brace 4 is connected to the brace fixing bracket 10 (connection piece 11) and the brace fixing bracket 20 (connection piece 21). In this case, since the vane 4a1 of the brace 4 is attached to the connection piece 11 by the first bolt 16a and the nut 16b, and the vane 4a2 is also attached to the connection piece 21 by the first bolt and nut, the brace 4 can be connected to the connection piece 11 and the connection piece 21 at an arbitrary angle in the horizontal plane (XY plane).

[0050] When connecting the brace fixing fitting 10 (connection piece 11) of the brace 5 to the brace fixing fitting 30 (connection piece 31), with the surface to which the round steel 5b1 of the vane 5a1 is fixed facing upward, align the bolt hole 5ah1 of the vane 5a1 with the second bolt hole 11h2 of the connection piece 11, apply the lower surface of the vane 5a1 to the upper surface of the connection piece 11, insert the second bolt 17a through the bolt hole 5ah1 and the second bolt hole 11h2, screw the nut 17b onto the threaded portion on the tip side of the second bolt 17a, and fix the vane 5a1 to the connection piece 11 (see FIGS. 6 and 7). Similarly, at the other end of the brace 5, fix the vane 5a2 with the surface to which the round steel 5b2 is fixed facing upward to the connection piece 31 of the brace fixing fitting 30 with a first bolt and a nut. Thereby, the brace 5 is connected to the brace fixing fitting 10 (connection piece 11) and the brace fixing fitting 30 (connection piece 31). In this case, for the brace 5, since the vane 5a1 is attached to the connection piece 11 by the second bolt 17a and the nut 17b, and the vane 5a2 is also attached to the connection piece 31 by the first bolt and the nut, the brace 5 can be connected to the connection piece 11 and the connection piece 31 at an arbitrary angle in the horizontal plane (XY plane).

[0051] When connecting the brace fixing fitting 40 (connection piece 41) of the brace 6 to the brace fixing fitting 60 (connection piece 61), similar to the cases of the braces 4 and 5, at one end of the brace 6, fix the vane 6a2 with the surface to which the round steel 6b2 is fixed facing upward to the connection piece 41 of the brace fixing fitting 40 with a first bolt and a nut, and at the other end of the brace 6, fix the vane 6a1 with the surface to which the round steel 6b1 is fixed facing upward to the connection piece 61 of the brace fixing fitting 60 with a first bolt and a nut. Thereby, the brace 6 is connected to the brace fixing fitting 40 (connection piece 41) and the brace fixing fitting 60 (connection piece 61). When connecting the brace 7 to the brace fixing bracket 50 (connection piece 51) and the brace fixing bracket 60 (connection piece 61), just as in the case of braces 4 and 5, at one end of the brace 7, the battledore 7a2 with the side to which the round steel 7b2 of the battledore 7a2 is fixed is fixed to the connection piece 51 of the brace fixing bracket 50 using a first bolt and nut, and at the other end of the brace 7, the battledore 7a1 with the side to which the round steel 7b1 of the battledore 7a1 is fixed is fixed to the connection piece 61 of the brace fixing bracket 60 using a first bolt and nut. As a result, the brace 7 is connected to the brace fixing metal fitting 50 (connecting piece 51) and the brace fixing metal fitting 60 (connecting piece 61). In this case, as with braces 4 and 5, brace 6 can be connected to connection piece 41 and connection piece 61 at any angle in the horizontal plane (XY plane), and brace 7 can be connected to connection piece 51 and connection piece 61 at any angle.

[0052] Similarly, when connecting the brace 4' to the brace fixing bracket 10' (connection piece 11') and the brace fixing bracket 20' (connection piece 21'), the battledore 4a1' is fixed to the connection piece 11' with the round steel 4b1' on the bottom side, and the battledore 4a2' is fixed to the connection piece 21' with the round steel 4b2' on the bottom side, by the first bolt and nut. When connecting the brace 5' to the brace fixing bracket 10' (connection piece 11') and the brace fixing bracket 30' (connection piece 31'), the battledore 5a1' is fixed to the connection piece 11' with the round steel 5b1' on the top side, and the battledore 5a2' is fixed to the connection piece 31' with the round steel 5b2' on the top side, by the first bolt and nut. When connecting the brace 6' to the brace fixing bracket 40' (connection piece 41') and the brace fixing bracket 60' (connection piece 61'), the first bolt and nut fixes the battledore 6a2' to the connection piece 41' with the round steel 6b2' on the upper side, and the battledore 6a1' to the connection piece 61' with the round steel 6b1' on the upper side, and when connecting the brace 7' to the brace fixing bracket 50' (connection piece 51') and the brace fixing bracket 60' (connection piece 61'), the first bolt and nut fixes the battledore 7a2' to the connection piece 51' with the round steel 7b2' on the lower side, and the battledore 7a1' to the connection piece 61' with the round steel 7b1' on the lower side. Also in this case, similar to braces 4, 5, 6, and 7, in the horizontal plane (XY plane), brace 4' can be connected to connecting piece 11' and connecting piece 21' at an arbitrary angle, brace 5' can be connected to connecting piece 11' and connecting piece 31' at an arbitrary angle, brace 6' can be connected to connecting piece 41' and connecting piece 61' at an arbitrary angle, and brace 6' can be connected to connecting piece 51' and connecting piece 61' at an arbitrary angle.

[0053] As described above, in the brace mounting structure 1, the first horizontal plane HD1 and the second horizontal plane HD2 are formed by beams 2A, 2B, 3A, 3B1, and 3C. Brace fixing brackets 10, 40, and 50 are attached to the front surface 2Af of beam 2A, and brace fixing brackets 20, 30, and 60 are attached to the rear surface 2Br of beam 2B. One end of each of the two braces 4 and 5 is connected to brace fixing bracket 10, one end of brace 6 is connected to brace fixing bracket 40, one end of brace 7 is connected to brace fixing bracket 50, the other ends of the two braces 6 and 7 are connected to brace fixing bracket 60, the other end of brace 4 is connected to brace fixing bracket 20, and the other end of brace 5 is connected to brace fixing bracket 30. The first horizontal plane HD1 is reinforced by the two braces 4 and 6, and the second horizontal plane HD2 is reinforced by the two braces 5 and 7. Here, all of the brace fixing brackets 10, 20, 30, 40, 50, and 60 have the same shape, size, and structure, and the braces 4, 5, 6, and 7 can be connected to the brace fixing brackets 10, 20, 30, 40, 50, 60 (connecting pieces 11, 21, 31, 41, 51, 61) at an arbitrary angle. Therefore, the braces 4, 5, 6, and 7 can be attached at an arbitrary position via the brace fixing brackets 10, 20, 30, 40, 50, 60, and the first horizontal plane HD1 and the second horizontal plane HD2 with different sizes and shapes can be reinforced by braces using the same brace fixing brackets.

[0054] The brace mounting structure 1 further includes a beam 2C and a beam 3B2, and the beams 2C, 2B, 3A, 3B2, and 3C further form a third horizontal structural face HD3 and a fourth horizontal structural face HD4. Brace fixing brackets 10', 40', and 50' are attached to the back surface 2Cr of the beam 2C, and brace fixing brackets 20', 30', and 60' are attached to the front surface 2Bf of the beam 2B. The brace fixing bracket 10' is attached to two braces 4'. , 5' are connected, one end of one brace 6' is connected to brace fixing bracket 40', one end of one brace 7' is connected to brace fixing bracket 50', the other ends of two braces 6' and 7' are connected to brace fixing bracket 60', the other end of one brace 4' is connected to brace fixing bracket 20', the other end of one brace 5' is connected to brace fixing bracket 30', and the other end of two braces 4' and 6' The third horizontal structural face HD3 is reinforced by two braces 5' and 7', and the fourth horizontal structural face HD4 is reinforced by two braces 5' and 7'. The brace fixing brackets 10', 20', 30', 40', 50', and 60' all have the same shape, size, and structure as the brace fixing bracket 10, etc., and the braces 4', 5', 6', and 7' can be connected at any angle to the brace fixing brackets 10', 20', 30', 40', 50', and 60' (connecting pieces 11', 21', 31', Since braces 4', 5', 6', and 7' can be attached at any position via brace fixing brackets 10', 20', 30', 40', 50', and 60', braces using the same brace fixing brackets can reinforce not only the first horizontal structural face HD1 and second horizontal structural face HD2, but also the third horizontal structural face HD3 and fourth horizontal structural face HD4, which have different sizes and shapes. In this case, normally, four brace fixing brackets are required per structural face, and 16 brace fixing brackets are required for four consecutive structural faces, but with brace mounting structure 1, four consecutive structural faces (first horizontal structural face HD1, second horizontal structural face HD2, third horizontal structural face HD3, fourth horizontal structural face HD4) can be reinforced with 12 brace fixing brackets 10, 10', 20, 20', 30, 30', 40, 40', 50, 50', 60, 60', reducing the number of brace fixing brackets required. Moreover, in the brace mounting structure 1, one or two braces can be connected with one type of brace fixing metal fitting, thereby reducing the number of types of brace fixing metal fittings.

[0055] [Effects when horizontal force acts on brace mounting structure 1] Figure 10 is an explanatory diagram that shows the forces that act on each brace and beam when a force (horizontal force) that attempts to move (shift) beam 2A to the left (-X direction) along the axis of beam 2A relative to beam 2C in brace mounting structure 1 acts. In the figure, HF is the horizontal force, and P1, P2, P3, and P4 are tensile forces, and the horizontal forces and tensile forces are represented by thick dashed arrows in the figure. In the brace mounting structure 1, when a horizontal force HF acts to move beam 2A to the left (-X direction) relative to beam 2C along the axis of beam 2A, each horizontal structural member of the rectangle attempts to deform into a parallelogram in which the distance between the upper left corner and the lower right corner increases and the distance between the upper right corner and the lower left corner decreases. In this case, braces 5, 6, 4', 7', which are placed across the upper left and lower right corners of each horizontal structural member, resist the above-mentioned deformation, and tensile forces act on braces 5, 6, 4', 7', which in turn act on the faces of the beams to which braces 5, 6, 4', 7' are fixed. Now, let P1 be the tensile force acting on brace 6 of the first horizontal structural face HD1, P2 be the tensile force acting on brace 5 of the second horizontal structural face HD2, P3 be the tensile force acting on brace 4' of the third horizontal structural face HD3, and P4 be the tensile force acting on brace 7' of the fourth horizontal structural face HD4. In the first horizontal structural face HD1, a tensile force P1 acts on the front surface 2Af of the beam 2A and the back surface 2Br of the beam 2B to which the brace fixing metal fittings 40, 60 connected to the brace 6 are attached, at the fixing portions of each brace fixing metal fitting. In the second horizontal structural face HD2, a tensile force P2 acts on the front surface 2Af of the beam 2A and the back surface 2Br of the beam 2B to which the brace fixing metal fittings 10, 30 connected to the brace 5 are attached, at the fixing portions of each brace fixing metal fitting. In the third horizontal plane HD3, on the front surface 2Bf of the beam 2B and the rear surface 2Cr of the beam 2C to which the brace fixing brackets 20' and 10' connected to the brace 4' are attached, a tensile force P3 acts on the fixing portions of the respective brace fixing brackets. In the fourth horizontal plane HD4, on the front surface 2Bf of the beam 2B and the rear surface 2Cr of the beam 2C to which the brace fixing brackets 60' and 50' connected to the brace 7' are attached, a tensile force P4 acts on the fixing portions of the respective brace fixing brackets.

[0056] Figs. 11(a) and (b) are respectively an enlarged sectional view taken along line E-E and an enlarged sectional view taken along line F-F of Fig. 10. As described above, the brace fixing bracket 10 fixed to the front surface 2Af of the beam 2A and the brace fixing bracket 60 fixed to the rear surface 2Br of the beam 2B are fixed below the beam 3B1, and the brace fixing bracket 10' fixed to the rear surface 2Cr of the beam 2C and the brace fixing bracket 60' fixed to the front surface 2Bf of the beam 2B are fixed below the beam 3B2. In this case, the heights (the heights of the centers of the left bolt hole and the right bolt hole) based on the upper surfaces 2Au and 2Bu of the brace fixing brackets 10 and 60 are the same h1, the height h2 of the beam 3B1 is smaller than h1, and the bottom surface 3B1b of the beam 3B1 is located above the upper ends of the attachment pieces 12 and 62 of the brace fixing brackets 10 and 60 (see Fig. 2). On the other hand, the height h2' of the beam 3B2 is larger than the height h2 of the beam 3B1 and larger than h1. However, by making the beam 3B2b sink into the recess formed by the notches provided in the attachment pieces 12' and 62' of the brace fixing brackets 10' and 60', the heights of the brace fixing brackets 10' and 60' can be made the same h1 as the brace fixing brackets 10 and 60 (see Fig. 3). From this, the positions of the fixing portions of the brace fixing brackets on which the above tensile forces P1, P2, P3, and P4 act become the same height h4. On the central beam 2B, the tensile force P1 acts on the rear surface 2Br and the tensile force P4 acts on the front surface 2Bf. However, due to the tensile forces P1 and P4, no moment is generated to rotate the beam 2B, and the beam 2B does not deform due to the moment. Note that the magnitude and direction of the tensile force P1 and the magnitude and direction of the tensile force P4 may be somewhat different and not the same. In such a case, the tensile force P1 and the tensile force P4 do not act so as to completely cancel each other out, and a moment is generated to rotate the beam 2B. However, such a moment is small and does not substantially deform the beam 2B.

[0057] Here, when notches 12k etc. are not provided in attachment pieces 12 etc. of the brace fixing fitting 10 etc., the brace fixing fitting attached below the beam cannot make the bottom surface of the beam sink into the recess formed by the notch of the attachment piece, and is attached so that the upper end of the attachment piece is positioned below the bottom surface of the beam. Figs. 12(a) and (b) are enlarged sectional views taken along line E-E and F-F when the brace fixing fittings 10' and 60' are attached in Fig. 10 such that the upper ends of the attachment pieces 12' and 62' are positioned below the bottom surface beam 3B2b of the beam 3B2. In the figures, MO is a moment. Even if the brace fixing fittings 10 and 60 are attached at the position of height h1, since the height h2 of the beam 3B1 is smaller than h1 and the bottom surface 3B1b of the beam 3B1 is positioned above the upper ends of the attachment pieces 12 and 62 of the brace fixing fittings 10 and 60, the brace fixing fittings 10 and 60 can be attached at the position of height h1. From this, as described above, the tensile force P1 of the fixing portion of the brace fixing fittings 10 and 60 acts at the position of the height h4 of the rear surface 2Br of the beam 3B2. On the other hand, since the height h2' of the beam 3B2 is larger than h1, in order for the upper ends of the attachment pieces 12' and 62' of the brace fixing fittings 10' and 60' to be positioned below the bottom surface 3B2b of the beam 3B2, it is necessary to attach the brace fixing fittings 10' and 60' at a position of a height h1' larger than the height h1. When the brace fixing fittings 10' and 60' are attached at the position of the height h1' in this way, the tensile force P4 of the fixing portion of the brace fixing fittings 10' and 60' acts at the position of the height h4' of the front surface 2Bf of the beam 3B2, and the height h4' is larger than the height h4. Therefore, in the beam 2B, the vertical positions of the tensile force P1 acting on the back surface 2Br and the tensile force P4 acting on the front surface 2Bf are different, and due to the tensile forces P1 and P4, a moment MO that attempts to rotate the beam 2B is generated. The beam 2B undergoes deformation due to the moment MO, and the shear strength of each horizontal plane HD1, HD2, HD3, and HD4 decreases. In this case, the brace fixing brackets 10 and 60 can be attached at the position of height h1'. However, if the brace fixing brackets are attached at the position of height h1', the position of the fixing part (bolt, screw) of the brace fixing bracket approaches the bottom surface of the beam, and a problem arises in that the beam is likely to crack at the fixing part (bolt, screw). Therefore, by providing notches in the attachment pieces 12' and 62' of the brace fixing brackets 10' and 60', the brace fixing brackets 10' and 60' can be attached at the same height h1 as the brace fixing brackets 10 and 60. Even when a horizontal force HF acts on the brace attachment structure 1, no moment MO is generated in the beam 2B. Even if the magnitude and direction of the tensile force P1 and the magnitude and direction of the tensile force P4 are somewhat different, no moment that substantially deforms the beam 2B acts, and the shear strength of each horizontal plane can be maintained.

[0058] [Another Example of Brace Attachment Structure] FIG. 13 is a plan view of a brace attachment structure in a vertical plane, which is another example of the brace attachment structure of the present invention. FIGS. 14(a) and (b) are enlarged cross-sectional views taken along line G-G of FIG. 13, and FIGS. 15(a) and (b) are enlarged cross-sectional views taken along line I-I of FIG. 13. In the figures, 71 is a brace attachment structure, 72A is a first column, 72Af is the front surface of the first column 72A, 72B is a second column, 72Bf is the front surface of the second column 72B, 72C is a third column, 72s1 is a first side surface, 72s2 is a second side surface, 72s3 is a third side surface, 72s4 is a fourth side surface, 73A is a base, 73B1 is a first intermediate beam, 73B1b is the back surface of the first intermediate beam 73B1, 73B2 is a second intermediate beam, 73B2b is the back surface of the second intermediate beam 73B2, 73C is a large beam, VD1 is a first vertical plane, VD2 is a second vertical plane, VD3 is a third vertical plane, and VD4 is a fourth vertical plane. Components having the same configuration as those of the brace attachment structure 1 shown in FIG. 1 are denoted by the same reference numerals. In the brace mounting structure 71, the first pillar 72A, second pillar 72B, and third pillar 72C are assembled, in order from left to right, to the upper surface of the base 73A, which is installed with its axis (longitudinal axis) facing the left-right direction (X direction), a main girder 73C is assembled to the upper surfaces of the first pillar 72A, second pillar 72B, and third pillar 72C, a first intermediate beam 73B1 is assembled to opposing sides of the midpoint (center in the vertical direction) between the first pillar 72A and the second pillar 72B, and a second intermediate beam 73B2 is assembled to opposing sides of the midpoint (center in the vertical direction) between the second pillar 72B and the third pillar 72C. The first pillar 72A, the second pillar 72B, the third pillar 72C, the base 73A, the first intermediate beam 73B1, the second intermediate beam 73B2, and the main beam 73C are made of wooden materials such as cypress, Japanese cypress, and cedar, but materials other than wood, such as carbon steel and metals such as aluminum, may also be used. The first vertical structural plane VD1 is formed by the first column 72A, the second column 72B, the base 73A and the first intermediate beam 73B1, the second vertical structural plane VD2 is formed by the first column 72A, the second column 72B, the first intermediate beam 73B1 and the main beam 73C, the third vertical structural plane VD3 is formed by the second column 72B, the third column 72C, the base 73A and the second intermediate beam 73B2, and the fourth vertical structural plane VD4 is formed by the second column 72B, the third column 72C, the second intermediate beam 73B2 and the main beam 73C.

[0059] [First vertical structural plane VD1, second vertical structural plane VD2] A brace fixing bracket 10 is attached to the center of the first side surface 72s1, which is the right side surface of the first column 72A, behind the first intermediate beam 73B1, spanning the first intermediate beam 73B1, a brace fixing bracket 40 is attached above the base 73A of the first side surface 72s1, and a brace fixing bracket 50 is attached below the beam 73C of the first side surface 72s1 (see Figures 13 and 14(a)). In this case, the bolts that secure the brace fixing brackets 10, 40, 50 to the first side surface 72s1 are all the same distance d1 from the front surface 72Af of the first column 72A, and the three brace fixing brackets 10, 40, 50 are attached at positions the same distance from the front surface 72Af. At the center of the second side surface 72s2, which is the left side surface of the second column 72B, a brace fixing fitting 60 is attached so as to straddle the first intermediate beam 73B1 behind the first intermediate beam 73B1. Above the base 73A of the second side surface 72s2, a brace fixing fitting 20 is attached. Below the beam 73C of the second side surface 72s2, a brace fixing fitting 30 is attached (see FIGS. 13 and 14(b)). Also in this case, the distances of the bolts for fixing the brace fixing fittings 20, 30, and 60 to the second side surface 72s2 from the front surface 72Bf of the second column 72B are all the same d1, and the three brace fixing fittings 20, 30, and 60 are attached at positions at the same distance from the front surface 72Bf. Note that the distance (the depth of the first intermediate beam 73B1) d2 from the front surface 72Af of the first column 72A and the front surface 72Bf of the second column 72B to the rear surface 73B1b of the first intermediate beam 73B1 is smaller than the distance d1.

[0060] In the first vertical plane VD1, the blade plate 4a1 of the brace 4 is attached with the round steel 4b1 on the back side below the connecting piece 11 of the brace fixing fitting 10, and the blade plate 4a2 of the brace 4 is attached with the round steel 4b2 on the back side above the connecting piece 21 of the brace fixing fitting 20. The brace 4 composed of the blade plates 4a1, 4a2, the round steels 4b1, 4b2, the turnbuckle 4tb, etc. is connected to the connecting piece 11 of the brace fixing fitting 10 and the connecting piece 21 of the brace fixing fitting 20. Also, the blade plate 6a2 of the brace 6 is attached with the round steel 6b2 on the front side above the connecting piece 41 of the brace fixing fitting 40, and the blade plate 6a1 of the brace 6 is attached with the round steel 6b1 on the front side below the connecting piece 61 of the brace fixing fitting 60. The brace 6 composed of the blade plates 6a1, 6a2, the round steels 6b1, 6b2, the turnbuckle 6tb, etc. is connected to the connecting piece 41 of the brace fixing fitting 40 and the connecting piece 61 of the brace fixing fitting 60. In this case, the turnbuckle 4tb is located at a position closer to the brace fixing fitting 10 side from the center of the first vertical plane VD1, and the turnbuckle 6tb is located at a position closer to the brace fixing fitting 40 side from the center of the first vertical plane VD1, so that the turnbuckle 4tb and the turnbuckle 6tb do not intersect. In the second vertical structural plane VD2, the battledore 5a1 of the brace 5 is attached to the upper side of the connecting piece 11 of the brace fixing bracket 10 with the round steel 5b1 facing forward, and the battledore 5a2 of the brace 5 is attached to the lower side of the connecting piece 31 of the brace fixing bracket 30 with the round steel 5b2 facing forward, and the brace 5 consisting of the battledores 5a1, 5a2, round steel 5b1, 5b2, turnbuckle 5tb, etc. is connected to the connecting piece 11 of the brace fixing bracket 10 and the connecting piece 31 of the brace fixing bracket 30. Furthermore, the battledore 7a2 of the brace 7 is attached to the underside of the connecting piece 51 of the brace fixing bracket 50 with the round steel 7b2 facing back, and the battledore 7a1 of the brace 7 is attached to the upper side of the connecting piece 61 of the brace fixing bracket 60 with the round steel 7b1 facing back, and the brace 7 consisting of the battledores 7a1, 7a2, the round steel 7b1, 7b2, the turnbuckle 7tb, etc. is connected to the connecting piece 51 of the brace fixing bracket 50 and the connecting piece 61 of the brace fixing bracket 60. In this case too, turnbuckle 5tb is located closer to the brace fixing bracket 10 from the center of the second vertical structural plane VD2, and turnbuckle 7tb is located closer to the brace fixing bracket 50 from the center of the second vertical structural plane VD2, so that turnbuckle 5tb and turnbuckle 7tb do not intersect. As a result, the first vertical structural plane VD1 is reinforced by two braces 4 and 6 hung between the first column 72A and the second column 72B via four brace fixing brackets 10, 20, 40, and 60, and the second vertical structural plane VD2 is reinforced by two braces 5 and 7 hung between the first column 72A and the second column 72B via four brace fixing brackets 10, 30, 50, and 60. In this case, a brace 4 reinforcing the first vertical structural plane VD1 and a brace 5 reinforcing the second vertical structural plane VD2 are connected to the brace fixing bracket 10 attached to the rear of the first intermediate beam 73B1 on the first side surface 72s1, and a brace 6 reinforcing the first vertical structural plane VD1 and a brace 7 reinforcing the second vertical structural plane VD2 are connected to the brace fixing bracket 60 attached to the rear of the first intermediate beam 73B1 on the second side surface 72s2.

[0061] As shown in Fig. 14(a), since the distances from the front face 72Af of each of the brace fixing brackets 10, 40, and 50 attached to the first side face 72s1 of the first column 72A (the distances to the centers of the left bolt hole and the right bolt hole) are all the same d1, the distance from the front face 72Af to the center of the round bar 4b1 of the brace 4 and the distance from the front face 72Af to the center of the round bar 7b2 of the brace 7 are the same distance d3, and the distance from the front face 72Af to the center of the round bar 5b1 of the brace 5 and the distance from the front face 72Af to the center of the round bar 6b2 of the brace 6 are the same distance d3'. Also, as shown in Fig. 14(b), since the distances from the front face 72Bf of each of the brace fixing brackets 20, 30, and 60 attached to the second side face 72s2 of the second column 72B (the distances to the centers of the left bolt hole and the right bolt hole) are all the same d1, the distance from the front face 72Bf to the center of the round bar 4b2 of the brace 4 and the distance from the front face 72Bf to the center of the round bar 7b1 of the brace 7 are the same distance d3, and the distance from the front face 72Bf to the center of the round bar 5b2 of the brace 5 and the distance from the front face 72Bf to the center of the round bar 6b1 of the brace 6 are the same distance d3'. Since the front - rear positions of the front face 72Af of the first column 72A and the front face 72Bf of the second column 72B are the same, the distances from the front face 72Af (72Bf) to the brace 4 and the brace 7 are the same d3, and the distances from the front face 72Af (72Bf) to the brace 5 and the brace 6 are the same d3'. The distance d3 is larger than the distance d3' by an amount equal to the sum of the diameters of the respective round bars and the thicknesses of the respective fins. And in the first vertical plane VD1, since there is a gap equal to the thickness of the fin 4a1 between the intersecting round bar 4b2 of the brace 4 and the round bar 6b1 of the brace 6, the round bar 4b2 and the round bar 6b1 do not interfere (contact) with each other, there is no wear of the round bar 4b2 and the round bar 6b1 due to interference (contact), and the load - bearing capacity of the braces 4 and 6 is prevented from decreasing. Similarly, in the second vertical plane VD2, since there is a gap equal to the thickness of the fin 5a1 or the like between the intersecting round bar 5b2 of the brace 5 and the round bar 7b1 of the brace 7, the round bar 5b2 and the round bar 7b1 do not interfere (contact) with each other, there is no wear of the round bar 5b2 and the round bar 7b1 due to interference (contact), and the load - bearing capacity of the braces 5 and 7 is prevented from decreasing. In particular, if the diameter of each round bar of braces 4, 5, 6, and 7 is not very large (for example, if the diameter of the round bars is 6 to 16 mm), the strength of the brace will decrease significantly due to wear of the round bars, so the effect of preventing a decrease in the strength of the brace by avoiding interference between intersecting braces as described above will be significant.

[0062] [Third vertical structural plane VD3, fourth vertical structural plane VD4] The configurations of the third vertical structural plane VD3 and the fourth vertical structural plane VD4 are the same as the configurations of the first vertical structural plane VD1 and the second vertical structural plane VD2. Specifically, a brace fixing bracket 10' is attached to the center of the third side surface 72s3, which is the left side surface of the third column 72C, behind the second intermediate beam 73B2, spanning the second intermediate beam 73B2, a brace fixing bracket 40' is attached above the base 73A of the third side surface 72s3, and a brace fixing bracket 50' is attached below the beam 73C of the third side surface 72s3 (see Figures 13 and 15(a)). In this case, the bolts that secure the brace fixing brackets 10', 40', and 50' to the third side surface 72s3 are all spaced the same distance d1 from the front surface 72Cf of the third column 72C, and the three brace fixing brackets 10', 40', and 50' are attached at positions that are the same distance from the front surface 72Cf. A brace fixing bracket 60' is attached to the rear of the second intermediate beam 73B2 in the center of the fourth side surface 72s4, which is the right side surface of the second column 72B, spanning the second intermediate beam 73B2, a brace fixing bracket 20' is attached above the base 73A of the fourth side surface 72s4, and a brace fixing bracket 30' is attached below the beam 73C of the fourth side surface 72s4 (see Figures 13 and 15(b)). In this case, too, the bolts that secure the brace fixing brackets 20', 30', and 60' to the fourth side surface 72s4 are all spaced the same distance d1 from the front surface 72Bf of the second column 72B, and the three brace fixing brackets 20', 30', and 60' are attached at positions the same distance from the front surface 72Bf. Incidentally, the depth (length in the Y direction) of the second intermediate beam 73B2 is greater than the depth of the first intermediate beam 73B1, but the mounting pieces 12', 62' of the brace fixing brackets 10', 60' have notches that are the same as the notch 12k of the mounting piece 12 of the brace fixing bracket 10, and by inserting the back surface 3B2b of the second intermediate beam 73B2 into the recess of this notch, the brace fixing brackets 10', 60' can be attached in the same position as the brace fixing brackets 10, 60 (at the same distance from the front surface 72Bf of the second column 72B). Furthermore, since the depth (length in the Y direction) of the second intermediate beam 73B2 is greater than the depth of the first intermediate beam 73B1, the distance d2' from the front surface 72Bf of the second pillar 72B to the back surface 73B2b of the second intermediate beam 73B2 is greater than the distance d1.

[0063] In the third vertical structural plane VD3, the battledore 4a1' of the brace 4' is attached to the underside of the connecting piece 11' of the brace fixing bracket 10' with the round steel 4b1' facing back, and the battledore 4a2' of the brace 4' is attached to the upper side of the connecting piece 21' of the brace fixing bracket 20' with the round steel 4b2' facing back, and the brace 4' consisting of the battledores 4a1', 4a2', the round steel 4b1', 4b2', the turnbuckle 4tb', etc. is connected to the connecting piece 11' of the brace fixing bracket 10' and the connecting piece 21' of the brace fixing bracket 20'. Furthermore, the battledore 6a2' of the brace 6' is attached to the upper side of the connecting piece 41' of the brace fixing bracket 40' with the round steel 6b2' facing forward, and the battledore 6a1' of the brace 6' is attached to the lower side of the connecting piece 61' of the brace fixing bracket 60' with the round steel 6b1' facing forward, and the brace 6' consisting of the battledores 6a1', 6a2', the round steel 6b1', 6b2', the turnbuckle 6tb', etc. is connected to the connecting piece 41' of the brace fixing bracket 40' and the connecting piece 61' of the brace fixing bracket 60'. In this case, turnbuckle 4tb' is located closer to the brace fixing bracket 10' side from the center of the third vertical structural plane VD3, and turnbuckle 6tb' is located closer to the brace fixing bracket 40' side from the center of the third vertical structural plane VD3, so that turnbuckle 4tb' and turnbuckle 6tb' do not intersect. In the fourth vertical structural plane VD4, the battledore 5a1' of the brace 5' is attached to the upper side of the connecting piece 11' of the brace fixing bracket 10' with the round steel 5b1' facing forward, and the battledore 5a2' of the brace 5' is attached to the lower side of the connecting piece 31' of the brace fixing bracket 30' with the round steel 5b2' facing forward, and the brace 5' consisting of the battledores 5a1', 5a2', the round steel 5b1', 5b2', the turnbuckle 5tb', etc. is connected to the connecting piece 11' of the brace fixing bracket 10' and the connecting piece 31' of the brace fixing bracket 30'. Furthermore, the battledore 7a2' of the brace 7' is attached to the underside of the connecting piece 51' of the brace fixing bracket 50' with the round steel 7b2' facing back, and the battledore 7a1' of the brace 7' is attached to the upper side of the connecting piece 61' of the brace fixing bracket 60' with the round steel 7b1' facing back, and the brace 7' consisting of the battledores 7a1', 7a2', the round steel 7b1', 7b2', the turnbuckle 7tb', etc. is connected to the connecting piece 51' of the brace fixing bracket 50' and the connecting piece 61' of the brace fixing bracket 60'. In this case too, turnbuckle 5tb' is located closer to the brace fixing bracket 10' side from the center of the fourth vertical structural plane VD4, and turnbuckle 7tb' is located closer to the brace fixing bracket 50' side from the center of the fourth vertical structural plane VD4, so that turnbuckle 5tb' and turnbuckle 7tb' do not intersect. As a result, the third vertical structural plane VD3 is reinforced by two braces 4', 6' hung between the second column 72B and the third column 72C via four brace fixing brackets 10', 20', 40', 60', and the fourth vertical structural plane VD4 is reinforced by two braces 5', 7' hung between the second column 72B and the third column 72C via four brace fixing brackets 10', 30', 50', 60'. In this case, a brace 4' reinforcing the third vertical structural plane VD3 and a brace 5' reinforcing the fourth vertical structural plane VD4 are connected to the brace fixing bracket 10' attached to the rear of the third intermediate beam 73B2 on the third side surface 72s3, and a brace 6' reinforcing the third vertical structural plane VD3 and a brace 7' reinforcing the fourth vertical structural plane VD4 are connected to the brace fixing bracket 60' attached to the rear of the fourth intermediate beam 73B4 on the fourth side surface 72s4.

[0064] As shown in Fig. 15(a), since the distances from the front face 72Cf of each of the brace fixing brackets 10', 40', 50' attached to the third side face 72s3 of the third column 72C (the distances to the centers of the left bolt hole and the right bolt hole) are all the same d1, the distance from the front face 72Cf to the center of the round steel 4b1' of the brace 4' and the distance from the front face 72Af to the center of the round steel 7b2' of the brace 7' are the same d3, and the distance from the front face 72Cf to the center of the round steel 5b1' of the brace 5' and the distance from the front face 72Cf to the center of the round steel 6b2' of the brace 6' are the same d3'. Also, as shown in Fig. 15(b), since the distances from the front face 72Bf of each of the brace fixing brackets 20', 30', 60' attached to the fourth side face 72s4 of the second column 72B (the distances to the centers of the left bolt hole and the right bolt hole) are all the same d1, the distance from the front face 72Bf to the center of the round steel 4b2' of the brace 4' and the distance from the front face 72Bf to the center of the round steel 7b1' of the brace 7' are the same d3, and the distance from the front face 72Bf to the center of the round steel 5b2' of the brace 5' and the distance from the front face 72Bf to the center of the round steel 6b1' of the brace 6' are the same d3'. Since the front - rear positions of the front face 72Cf of the third column 72C and the front face 72Bf of the second column 72B are the same, the distances from the front face 72Af (72Bf) to the braces 4 and 7 are the same d3, the distances from the front face 72Cf (72Bf) to the braces 5' and 6' are the same d3', and the distance d3 is larger than the distance d3' by an amount equal to the sum of the diameter of each round steel and the thickness of each fin plate. And in the third vertical plane VD3, since there is a gap equal to the thickness of the fin plate 4a1' between the round steel 4b2' of the intersecting brace 4' and the round steel 6b1' of the brace 6', the round steel 4b2' and the round steel 6b1' do not interfere (contact), there is no wear of the round steel 4b2' and the round steel 6b1' due to interference (contact), and the load - bearing capacity of the braces 4' and 6' is prevented from decreasing. Similarly, in the fourth vertical structural plane VD4, there is a gap the thickness of the battledore 5a1' between the round steel 5b2' of the intersecting brace 5' and the round steel 7b1' of the intersecting brace 7', so the round steel 5b2' and the round steel 7b1' do not interfere (contact), and there is no wear of the round steel 5b2' and the round steel 7b1' due to interference (contact), preventing a decrease in the strength of the braces 5' and 7. In particular, if the diameter of each round bar in braces 4', 5', 6', and 7' is not very large (for example, if the diameter of the round bars is 6 to 16 mm), the strength of the brace will decrease significantly due to wear of the round bars, so avoiding interference between intersecting braces as described above will be more effective in preventing a decrease in the strength of the brace.

[0065] As described above, in the brace mounting structure 71, the first column 72A, the second column 72B, the base 73A, the first intermediate beam 73B1, and the main beam 73C form the first vertical structural plane VD1 and the second vertical structural plane VD2, the brace fixing brackets 10, 40, and 50 are attached to the first side surface 72s1 of the first column 72A, and the brace fixing brackets 20, 30, and 60 are attached to the second side surface 72s2 of the second column 72B, one ends of two braces 4 and 5 are connected to the brace fixing bracket 10, one end of one brace 6 is connected to the brace fixing bracket 40, one end of one brace 7 is connected to the brace fixing bracket 50, the other ends of the two braces 6 and 7 are connected to the brace fixing bracket 60, the other end of one brace 4 is connected to the brace fixing bracket 20, and the brace fixing bracket 3 The other end of one brace 5 is connected to 0, the first vertical structural plane VD1 is reinforced with two braces 4 and 6, and the second vertical structural plane VD2 is reinforced with two braces 5 and 7. The brace fixing brackets 10, 20, 30, 40, 50, 60 all have the same shape, size, and structure, and the braces 4, 5, 6, 7 can be connected to the brace fixing brackets 10, 20, 30, 40, 50, 60 (connection pieces 11, 21, 31, 41, 51, 61) at any angle. Therefore, the braces 4, 5, 6, 7 can be attached at any position via the brace fixing brackets 10, 20, 30, 40, 50, 60, and the first vertical structural plane VD1 and the second vertical structural plane VD2, which differ in size and shape, can be reinforced using braces that use the same brace fixing brackets.

[0066] Further, the brace mounting structure 71 further includes a third column 72C and a second intermediate beam 73B2. The third column 72C, the second column 72B, the base 73A, the second intermediate beam 73B2, and the main beam 73C further form a third vertical plane VD3 and a fourth vertical plane VD4. Brace fixing brackets 10', 40', 50' are attached to the third side surface 72s3 of the third column 72C, and brace fixing brackets 20', 30', 60' are attached to the fourth side surface 72s4 of the second column 72B. One end of each of the two braces 4', 5' is connected to the brace fixing bracket 10', one end of the brace 6' is connected to the brace fixing bracket 40', one end of the brace 7' is connected to the brace fixing bracket 50', the other ends of the two braces 6', 7' are connected to the brace fixing bracket 60', the other end of the brace 4' is connected to the brace fixing bracket 20', and the other end of the brace 5' is connected to the brace fixing bracket 30'. The third vertical plane VD3 is reinforced by the two braces 4', 6', and the fourth vertical plane VD4 is reinforced by the two braces 5', 7'. All of the brace fixing brackets 10', 20', 30', 40', 50', 60' have the same shape, size, and structure as the brace fixing bracket 10 and the like. Since the braces 4', 5', 6', 7' can be connected to the brace fixing brackets 10', 20', 30', 40', 50', 60' (connection pieces 11', 21', 31', 41', 51', 61') at any angle, the braces 4', 5', 6', 7' can be attached at any position via the brace fixing brackets 10', 20', 30', 40', 50', 60'. With the braces using the same brace fixing brackets, in addition to the first vertical plane VD1 and the second vertical plane VD2, the third vertical plane VD3 and the fourth vertical plane VD4 with different sizes and shapes can be reinforced.

[0067] [Action when a horizontal force acts on the brace mounting structure 71] In the brace mounting structure 71, when a horizontal force acts to move the large beam 73C to the left (-X direction) along the axis of the large beam 73C with respect to the base 73A, similar to the case where a horizontal force acts on the beam 2A of the brace mounting structure 1, each vertical plane of the rectangle tends to deform into a parallelogram such that the distance between the upper left corner and the lower right corner increases and the distance between the upper right corner and the lower left corner decreases. In this case, the braces 4, 7, 6', 5' spanning across the upper left corner and the lower right corner of each vertical plane resist the above-described deformation so as not to cause it, and a tensile force acts on the braces 4, 7, 6', 5', and this tensile force acts on the surfaces of the respective beams that fix the braces 4, 7, 6', 5'. Here, when notches 12k, etc. are not provided in the mounting pieces 12, etc. of the brace fixing fittings 10, etc., the brace fixing fittings attached to the rear of the beam cannot have the rear surface of the beam dive into the recess formed by the notch of the mounting piece, and are attached such that the front end of the mounting piece is located behind the rear surface of the beam. Even if the brace fixing fittings 10, 60 are attached at a position at a distance d1 from the front surface 72Af (72Bf) of the first column 72A (second column 72B), since the depth d2 of the first intermediate beam 73B1 is smaller than d1 and the rear surface 73B1b of the first intermediate beam 73B1 is located behind the front ends of the mounting pieces 12, 62 of the brace fixing fittings 10, 60, the brace fixing fittings 10, 60 can be attached at the position at the distance d1. On the other hand, since the depth d2' of the second intermediate beam 73B2 is larger than the distance d1, in order for the upper ends of the mounting pieces 12', 62' of the brace fixing fittings 10', 60' to be located behind the rear surface 73B2b of the second intermediate beam 73B2, it is necessary to attach the brace fixing fittings 10', 60' at a position at a distance larger than the distance d1. When the brace fixing fittings 10, 60 are attached at the position at the distance d1 and the brace fixing fittings 10', 60' are attached at a position at a distance larger than the distance d1 in this way, in the second column 72B, the front-rear positions of the tensile force acting on the second side surface 72s2 and the tensile force acting on the fourth side surface 72s4 are different, a moment is generated to try to rotate the second column 72B, the second column 72B deforms due to the moment, and the yield strength of each vertical plane VD1, VD2, VD3, VD4 decreases. In this case, if the brace fixing brackets 10, 60 are attached at a distance greater than distance d1, the position of the fixing parts (bolts, screws) of the brace fixing brackets will be closer to the back of the second column 72B, which will cause the second column 72B to become more susceptible to cracking at the fixing parts (bolts, screws). Therefore, by providing notches in the mounting pieces 12', 62' of the brace fixing brackets 10', 60', the brace fixing brackets 10', 60' can be attached at the same distance d1 as the brace fixing brackets 10, 60, and even if a horizontal force acts on the brace mounting structure 71, no moment that would substantially deform the second column 72B is generated, and the bearing capacity of each vertical structural plane can be maintained. [Industrial Applicability]

[0068] The brace mounting structure of the present invention uses a single type of brace fixing hardware to mount a brace at any position on the structural surface of a building of any shape or size between opposing members that form the structural surface, and can be used as a brace mounting structure for mounting braces to the structural surfaces of various types of buildings, such as wooden buildings. [Explanation of symbols]

[0069] 1 Brace mounting structure 2A, 2B, 2C, 3A, 3B1, 3B2, 3C beam 2Af Front of beam 2A 2Au Top surface of beam 2A 2Bf Front of beam 2B 2Br Back of beam 2B 2Bu Top surface of beam 2B 2Cr Back of beam 2C 2Cu Top surface of beam 2C 3B1b Bottom surface of beam 3B1 3B2b Bottom surface of beam 3B2 4, 4', 5, 5', 6, 6', 7, 7' brace 4a1, 4a1', 4a2, 4a2', 5a1, 5a1', 5a2, 5a2', 6a1, 6a1', 6a2, 6a2', 7a1, 7a1', 7a2, 7a2' Battledore 4ah1, 5ah1 bolt holes 4b1, 4b1', 4b2, 4b2', 5b1, 5b1', 5b2, 5b2', 6b1, 6b1', 6b2, 6b2', 7b1, 7b1', 7b2, 7b2' Round steel 4tb, 4tb', 5tb, 5tb', 6tb, 6tb', 7tb, 7tb' turnbuckles 10, 20, 30, 40, 50, 60 Brace fixing bracket 11, 11', 21, 21', 31, 31', 41, 41', 51, 51', 61, 61' connecting pieces 11h1 First bolt hole 11h2 Second bolt hole 12, 12', 22, 22', 32, 32', 42, 42', 52, 52', 62, 62' Mounting piece 12h1 left bolt hole 12h2 Right bolt hole 12k notch 12p left screw hole group 12ph left screw hole 12q Right screw hole group 12qh right screw hole 13L left rising piece 13R Right rising piece 14a left bolt 15a right bolt 14b, 15b nuts 16a First bolt 17a Second bolt 16b, 17b nuts 18 Left screw group 18a left screw 19 Right screw group 19a right screw 71 Brace mounting structure 72A Pillar 1 72Af Front of Column 1 72A 72B Pillar 2 72Bf Front of the second pillar 72B 72C Pillar 3 72s1 1st side 72s2 2nd side 72s3 3rd side 72s4 4th side 73A Base 73B1 First Intermediate Beam 73B1b Back of the First Intermediate Beam 73B1 73B2 Second Intermediate Beam 73B2b Back of the Second Intermediate Beam 73B2 73C Main Beam HD1 First Horizontal Structure Plane HD2 Second Horizontal Structure Plane HD3 Third Horizontal Structure Plane HD4 Fourth Horizontal Structure Plane HF Horizontal Force P1, P2, P3, P4 Tensile Force MO Moment VD1 First Vertical Structure Plane VD2 Second Vertical Structure Plane VD3 Third Vertical Structure Plane VD4 Fourth Vertical Structure Plane

Claims

1. A brace mounting structure in which a brace is attached between one member and another opposing member among the members forming the building facade via a brace fixing fitting, wherein the brace fixing fitting has a connection portion to which two of the braces are connected at an arbitrary angle, a plurality of the brace fixing fittings are attached to each of the one member and the other member, one or two of the braces are connected to each of the connection portions of the brace fitting attached to the one member and the brace fitting attached to the other member, and the plurality of the brace fixing fittings attached to the one member and the other member all have the same shape, size and structure. A brace mounting structure characterized by this.

2. The one member is a first main horizontal member, the other member is a second main horizontal member at the same height position as the first main horizontal member, the building facade is a horizontal facade formed by the first main horizontal member, the second main horizontal member, and a plurality of auxiliary horizontal members installed so as to span perpendicularly between the first main horizontal member and the second main horizontal member, the brace fixing fitting is attached to a first vertical plane perpendicular to the horizontal plane of the first main horizontal member and a second vertical plane perpendicular to the horizontal plane of the second main horizontal member, and the brace fixing fitting is disposed below the auxiliary horizontal member. The brace mounting structure according to Claim 1, characterized by this.

3. The plurality of auxiliary horizontal members include a first auxiliary horizontal member disposed at the center between the first main horizontal member and the second main horizontal member, and second and third auxiliary horizontal members disposed on both sides sandwiching the first auxiliary horizontal member, the horizontal facade includes a first horizontal facade and a second horizontal facade, the first horizontal facade is formed by the first main horizontal member, the second main horizontal member, the first auxiliary horizontal member and the second auxiliary horizontal member, the second horizontal facade is formed by the first main horizontal member, the second main horizontal member, the first auxiliary horizontal member and the third auxiliary horizontal member, and the brace fixing fitting is attached below the first auxiliary horizontal member on the first vertical plane and the second vertical plane, and the brace for reinforcing the first horizontal facade and the brace for reinforcing the second horizontal facade are connected to the brace fixing fitting. The brace mounting structure according to Claim 2, characterized by this.

4. The plurality of the brace fixing fittings attached to the first vertical plane are attached at the same height position with reference to the upper end of the first vertical plane, The plurality of brace fixing brackets attached to the second vertical surface are characterized in that they are attached at the same height with reference to the upper end of the second vertical surface. The brace mounting structure according to claim 2.

5. The building structure further includes a third main horizontal member that faces the main second horizontal member and is at the same height as the main second horizontal member, and a secondary horizontal member that is installed so as to span perpendicularly between the second main horizontal member and the third main horizontal member. The secondary horizontal member includes a fourth secondary horizontal member disposed at the center of the second main horizontal member and the third main horizontal member, and a fifth secondary horizontal member and a sixth secondary horizontal member disposed on both sides of the fourth secondary horizontal member with the fourth secondary horizontal member interposed therebetween. A third horizontal structure is formed by the second main horizontal member, the third main horizontal member, the fourth secondary horizontal member, and the fifth secondary horizontal member. A fourth horizontal structure is formed by the second main horizontal member, the third main horizontal member, the fourth secondary horizontal member, and the sixth secondary horizontal member. The brace fixing bracket is attached below the fourth secondary horizontal member of the fourth vertical surface that faces the second vertical surface and is perpendicular to the third horizontal structure of the second main horizontal member, and the brace for reinforcing the third horizontal structure and the brace for reinforcing the fourth horizontal structure are connected to the brace fixing bracket. The brace mounting structure according to claim 3.

6. The one member is a first column assembled to the base. The other member is a second column assembled to the base. The building structure is a vertical structure formed by the first column, the second column, the base, and a plurality of beams spanning between the first column and the second column. The brace fixing bracket is attached to the first side surface of the first column facing the second column and the second side surface of the second column facing the first column. The brace mounting structure according to claim 1.

7. The plurality of beams include a main beam assembled to the upper surfaces of the first column and the second column, and a first intermediate beam assembled at an intermediate position in the vertical direction between the first column and the second column. The vertical structure includes a first vertical structure and a second vertical structure. The first vertical structure is formed by the first column, the second column, the base, and the first intermediate beam. The second vertical structure is formed by the first column, the second column, the first intermediate beam, and the main beam. The brace fixing fitting is attached to the back side of the first intermediate beam on the first side surface and the second side surface, and the brace for reinforcing the first vertical structure surface and the brace for reinforcing the second vertical structure surface are connected to the brace fixing fitting. The mounting structure of the brace according to claim 6, characterized in that.

8. The plurality of brace fixing fittings attached to the first side surface are attached at positions at the same distance from the front surface of the first column. The mounting structure of the brace according to claim 6, characterized in that the plurality of brace fixing fittings attached to the second side surface are attached at positions at the same distance from the front surface of the second column.

9. The structure surface of the building further includes a third column installed between the base and the large beam at a position facing the second column on the side opposite to the first column, and a second intermediate beam assembled at an intermediate position in the vertical direction between the second column and the third column. A third vertical structure surface is formed by the second column, the third column, the base, and the second intermediate beam. A fourth vertical structure surface is formed by the second column, the third column, the second intermediate beam, and the large beam. The brace fixing fitting is attached to the back side of the second intermediate beam on the fourth side surface of the second column facing the second side surface and the third side surface of the third column facing the second column, and the brace for reinforcing the third vertical structure surface and the brace for reinforcing the fourth vertical structure surface are connected to the brace fixing fitting. The mounting structure of the brace according to claim 7, characterized in that.

Images