Earthquake-resistant structure

Abstract

To reduce the number of joining members used for joining a wood part and a joint member in a configuration using a diagonal column of wood of mixed structure.SOLUTION: An earthquake-resistant structure comprises: a first diagonal column including a pair of beams disposed apart from each other in a vertical direction, a plurality of first wood parts each having an end part attached to the pair of beams, inclined in one direction, and having an elongated shape, a first joint member sandwiched between the pair of first wood parts, and a first joining member joining the first joint member and the first wood part; a second diagonal column having end parts attached to the pair of beams, disposed adjacent to the first diagonal column, inclined toward the other side, and including a plurality of elongated second wood portions, a second joint member sandwiched between the pair of second wood portions, and a second joining member joining the second joint member and the second wood portions; a first tension member having ends attached to the pair of beams and disposed along the first diagonal column; and a second tension member having ends attached to the pair of beams and disposed along the second diagonal column.SELECTED DRAWING: Figure 14

Description

[Technical field]

[0001] The present disclosure relates to earthquake-resistant structures. [Background technology]

[0002] The structure composed of multiple pieces described in Patent Document 1 has a first piece and a second piece, the first piece having a first horizontal member and a first cross member that intersects with the first horizontal member at a first angle excluding right angles, and the second piece having a second horizontal member and a second cross member that intersects with the second horizontal member at a second angle excluding right angles and the first angle, and has a portion where the first horizontal member and the second horizontal member are joined. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-193281 A Summary of the Invention [Problem to be solved by the invention]

[0004] Diagonal wooden columns are sometimes used as earthquake-resistant elements in structures. In such cases, diagonal columns are used that are inclined to one side and to the other side to withstand horizontal forces from both sides.

[0005] Here, when a horizontal force from one side acts on the structure, a compressive force is generated in the diagonal column tilted to one side, and a tensile force is generated in the diagonal column tilted to the other side. On the other hand, when a horizontal force from the other side acts on the structure, a compressive force is generated in the diagonal column tilted to the other side, and a tensile force is generated in the diagonal column tilted to one side.

[0006] In addition, a mixed structure is often used for long diagonal columns, and the diagonal columns are formed by joining multiple long wooden parts using metal joint members, etc. Specifically, the wooden parts and the joint members are joined using joint members such as drift pins. Considering the tensile force generated in the diagonal columns, it is necessary to use a large number of joint members.

[0007] An object of the present disclosure is to reduce the number of connecting members used to connect wood parts and joint members in a configuration in which a diagonal wooden column of mixed construction is used. [Means for solving the problem]

[0008] The earthquake-resistant structure of the first embodiment is characterized by comprising a pair of beams spaced apart in the vertical direction; a first diagonal column having ends attached to the pair of beams, inclined to one side, and having a pair of long first wooden members, a first joint member sandwiched between the pair of first wooden members, and a first joining member joining the first joint member and the first wooden member; a second diagonal column having ends attached to the pair of beams, arranged next to the first diagonal column, inclined to the other side, and having a pair of long second wooden members, a second joint member sandwiched between the pair of second wooden members, and a second joining member joining the second joint member and the second wooden member; a first tension member having ends attached to the pair of beams, arranged along the first diagonal column, and capable of withstanding tensile force; and a second tension member having ends attached to the pair of beams, arranged along the second diagonal column, and capable of withstanding tensile force.

[0009] According to the above aspect, when a horizontal force acts on the earthquake-resistant structure from the other side to the one side, the tensile resistance force generated in the first wooden part of the first diagonal column acts on the first joint member that joins the first wooden part to the first joint member. Meanwhile, a tensile force acts on the first tension member, generating a tensile resistance force. As a result, the force acting on the first joint member that joins the first wooden part to the first joint member is smaller than when the first tension member is not provided. Therefore, in a configuration in which a diagonal wooden column of a mixed structure is used, the number of first joint members used to join the first wooden part to the first joint member can be reduced.

[0010] In contrast, when a horizontal force acts on the earthquake-resistant structure from one side to the other, the tensile resistance generated in the second wooden part of the second diagonal column acts on the second joint member that joins the second wooden part to the second joint member. Meanwhile, a tensile force acts on the second tension member, generating a tensile resistance. As a result, the force acting on the second joint member that joins the second wooden part to the second joint member is smaller than when the second tension member is not provided. Therefore, in a configuration in which a diagonal wooden column of a mixed structure is used, the number of second joint members used to join the second wooden part to the second joint member can be reduced.

[0011] The earthquake-resistant structure of the second aspect is characterized in that, in the earthquake-resistant structure described in the first aspect, the first diagonal columns and the second diagonal columns are provided in multiple locations spaced apart horizontally, the first diagonal columns and the second diagonal columns are arranged so that they form a V shape, the first tension members are arranged between adjacent first diagonal columns, and the second tension members are arranged between adjacent second diagonal columns.

[0012] According to the above aspect, the design can be improved compared to a case where the first diagonal column, the second diagonal column, the first tension member, and the second tension member are arranged irregularly.

[0013] The earthquake-resistant structure of the third aspect is characterized in that, in the earthquake-resistant structure described in the first aspect, the first connecting member is a drift pin, the first joint member has a first through hole into which the first connecting member is fitted and extending in the tensile direction of the first wooden portion, and the second connecting member is a drift pin, and the second joint member has a second through hole into which the second connecting member is fitted and extending in the tensile direction of the second wooden portion.

[0014] According to the above aspect, the first joint member has a first through hole into which the first joining member is fitted and which extends in the tensile direction of the first wooden part, and the second joint member has a second through hole into which the second joining member is fitted and which extends in the tensile direction of the second wooden part. As a result, when a tensile force acts on the first wooden part or the second wooden part, the first wooden part or the second wooden part moves in the tensile direction by the length of the long hole of the first through hole or the second through hole, thereby preventing damage to the first wooden part or the second wooden part.

[0015] The earthquake-resistant structure of the fourth embodiment is characterized by comprising a pair of beams spaced apart in the vertical direction, a first diagonal column having an end attached to the pair of beams, inclined to one side, and formed with a long first wooden portion, a second diagonal column having an end attached to the pair of beams, positioned next to the first diagonal column, inclined to the other side, and formed with a long second wooden portion, a first tension member having an end attached to the pair of beams and arranged along the first diagonal column, a second tension member having an end attached to the pair of beams and arranged along the second diagonal column, first connecting members joining the pair of beams to both ends of the first diagonal column, and second connecting members joining the pair of beams to both ends of the second diagonal column,

[0016] According to the above aspect, when a horizontal force acts on the earthquake-resistant structure from the other side to one side, a tensile force acts on the first diagonal column. Then, a tensile resistance force is generated on the first diagonal column, and this tensile resistance force acts on the first joint member that joins the first diagonal column to the beam. Meanwhile, a tensile force acts on the first tension member, and a tensile resistance force is generated. As a result, the force acting on the first joint member that joins the first diagonal column to the beam is smaller than when the first tension member is not provided, and the number of first joint members can be reduced.

[0017] In contrast, when a horizontal force acts on the seismic structure from one side to the other, a tensile force acts on the second diagonal column. A tensile resistance force is generated in the second diagonal column, and this tensile resistance force acts on the second connecting member that connects the second diagonal column to the beam. Meanwhile, a tensile force acts on the second tension member, generating a tensile resistance force. As a result, the force acting on the second connecting member that connects the second diagonal column to the beam is smaller than when the second tension member is not provided, making it possible to reduce the number of connecting members. Effect of the Invention

[0018] According to the present disclosure, in a configuration in which a diagonal wooden column of mixed structure is used, the number of connecting members used to connect the wooden parts and the joint members can be reduced. [Brief description of the drawings]

[0019] [Figure 1] FIG. 1 is a perspective view showing an earthquake-resistant structure according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is an enlarged perspective view showing a portion of an earthquake-resistant structure according to an embodiment of the present disclosure. [Diagram 3] 13 is an enlarged perspective view showing another portion of the earthquake-resistant structure according to the embodiment of the present disclosure. FIG. [Figure 4] 1 is an exploded perspective view showing the upper ends of a first diagonal column and a second diagonal column in an earthquake-resistant structure according to an embodiment of the present disclosure. FIG. [Diagram 5] 3A and 3B are a front view and a cross-sectional view showing a relationship between a through hole and a drift pin formed in a gusset plate in an earthquake-resistant structure according to an embodiment of the present disclosure. [Figure 6] 1 is an exploded perspective view showing a portion where a pair of first diagonal columns and a pair of second diagonal columns are joined in an earthquake-resistant structure according to an embodiment of the present disclosure. FIG. [Figure 7] FIG. 2 is an exploded perspective view showing the lower end portion of a first diagonal column in an earthquake-resistant structure according to an embodiment of the present disclosure. [Figure 8] 1 is an exploded perspective view showing the lower end portions of a first diagonal column and a second diagonal column in an earthquake-resistant structure according to an embodiment of the present disclosure. FIG. [Figure 9] 1 is an exploded perspective view showing a portion where a pair of second wooden members are joined in an earthquake-resistant structure according to an embodiment of the present disclosure. FIG. [Figure 10] An oblique view showing the upper end portions of the first tension member and the second tension member in an earthquake-resistant structure according to an embodiment of the present disclosure. [Figure 11] An oblique view showing the portions where a pair of first tension members and a pair of second tension members are joined in an earthquake-resistant structure according to an embodiment of the present disclosure. [Figure 12] An oblique view showing the lower end portions of the first tension member and the second tension member in an earthquake-resistant structure according to an embodiment of the present disclosure. [Figure 13] 1A and 1B are front views showing a first diagonal column, a second diagonal column, a first tension member, and a second tension member in an earthquake-resistant structure according to an embodiment of the present disclosure. [Figure 14] 1A and 1B are enlarged front views showing a first diagonal column, a second diagonal column, a first tension member, and a second tension member in an earthquake-resistant structure according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An example of an outer shell structure of a building according to an embodiment of the present disclosure will be described with reference to Figures 1 to 14. Arrow H shown in each figure indicates the up-down direction, i.e., the vertical direction, arrow W shown in each figure indicates the width direction perpendicular to arrow H and also the horizontal direction, and arrow D shown in each figure indicates the depth direction perpendicular to arrows H and W and also the horizontal direction.

[0021] (Overall composition) As shown in Fig. 1, the earthquake-resistant structure 10 of this embodiment constitutes the outer shell of a building 100, and includes a foundation beam 12 made of reinforced concrete on the first floor, and a plurality of steel beams 20 arranged above the foundation beam 12, extending horizontally, and spaced apart in the vertical direction. The earthquake-resistant structure 10 further includes a first diagonal column 30 whose end is attached to the foundation beam 12 or the steel beam 20 and inclined to one side in the vertical direction, and a second diagonal column 50 whose end is attached to the foundation beam 12 or the steel beam 20 and inclined to the other side in the vertical direction. The earthquake-resistant structure 10 also includes a first tension member 70 whose end is attached to the foundation beam 12 or the steel beam 20 and arranged along the first diagonal column 30, and a second tension member 90 whose end is attached to the foundation beam 12 or the steel beam 20 and arranged along the second diagonal column 50.

[0022] The earthquake-resistant structure 10 in the depth direction and the earthquake-resistant structure 10 in the width direction are similar. Therefore, in this embodiment, the earthquake-resistant structure 10 in the depth direction (the left side in FIG. 1) will be described.

[0023] [12 foundation beams, 20 steel beams] The foundation beams 12 are made of reinforced concrete and form the outer periphery of the first floor of the building 100 as shown in FIG.

[0024] As shown in Fig. 1, the steel beams 20 are a steel beam 20a constituting the outer periphery of the second floor of the building 100, a steel beam 20b constituting the outer periphery of the third floor of the building 100, a steel beam 20c constituting the outer periphery of the third floor of the building 100, and a steel beam 20d constituting the outer periphery of the roof of the building 100. The steel beams 20a, 20b, 20c, and 20d are cylindrical and have a rectangular cross section. In the following, when the steel beams of each floor are not distinguished, the alphabet at the end of the name will be omitted. The foundation beam 12, the steel beam 20b, and the steel beam 20d are examples of beams.

[0025] [First diagonal column 30] The first diagonal column 30 has a mixed structure of wood and metal, and is inclined in the up-down direction so that the upper end of the first diagonal column 30 is located on one side in the width direction (the right side in the figures) with respect to the lower end, as shown in Figures 2 and 3. The first diagonal columns 30 are disposed between the steel beams 20b and 20d (see Figure 2) and between the foundation beam 12 and the steel beams 20b (see Figure 3), respectively, and are provided in plurality with intervals in the width direction.

[0026] The first diagonal pillar 30 comprises a pair of first wooden parts 32 spaced apart in the longitudinal direction, first metal joint members 34, 38 sandwiched between the pair of first wooden parts 32, and a drift pin 36 (see FIG. 5) that joins the first wooden parts 32 and the first joint members 34, 38. For ease of explanation, the first wooden part 32 arranged on the upper side will be referred to as the first wooden part 32a, and the first wooden part 32 arranged on the lower side will be referred to as the first wooden part 32b. The drift pin 36 is an example of a first joint member and a second joint member.

[0027] -First diagonal column 30 arranged between steel beam 20b and steel beam 20d- The first diagonal column 30, which is disposed between the steel beam 20b and the steel beam 20d, is attached to the steel beam 20b and the steel beam 20d as shown in FIG.

[0028] Specifically, as shown in Fig. 4, a gusset plate 102 protruding in the direction in which the first diagonal column 30 is inclined is attached to the lower surface of the steel beam 20d. The gusset plate 102 extends in the direction in which the first diagonal column 30 is inclined and has a through hole 102a into which the drift pin 36 (see Fig. 5) is fitted. A slit 30a is formed in the upper end of the first wooden part 32a of the first diagonal column 30, and the gusset plate 102 is inserted into the slit 30a, and the drift pin 36 is fitted into the through hole 102a, whereby the upper end of the first diagonal column 30 is attached to the steel beam 20d. Note that the through holes of the first diagonal column 30 and the second diagonal column 50 into which the drift pin 36 is inserted are omitted in each drawing.

[0029] 6, a gusset plate 104 is attached to the top surface of the steel beam 20b, protruding in the direction in which the first diagonal column 30 is inclined. This gusset plate 104 has a through hole 104a that extends in the direction in which the first diagonal column 30 is inclined and into which the drift pin 36 (see FIG. 5) is fitted. A slit 30b is formed in the lower end of the first wooden part 32b of the first diagonal column 30, and the gusset plate 104 is inserted into this slit 30b, and the drift pin 36 (see FIG. 5) is fitted into the through hole 104a, whereby the lower end of the first diagonal column 30 is attached to the steel beam 20b.

[0030] 7, a first connection member 34 is provided between the first wooden portion 32a and the first wooden portion 32b. The first connection member 34 is composed of a gusset plate 106 protruding upward from the top surface of the steel beam 20c, a gusset plate 108 protruding downward from the bottom surface of the steel beam 20c, and the portion of the steel beam 20c sandwiched between the gusset plate 106 and the gusset plate 108.

[0031] The gusset plate 106 protrudes in the direction in which the first diagonal column 30 is inclined, and the gusset plate 106 has a through hole 106a that extends in the direction in which the first diagonal column 30 is inclined and into which the drift pin 36 (see FIG. 5) is fitted. A slit 30c is formed in the lower end of the first wooden part 32a of the first diagonal column 30, and the lower end of the first wooden part 32a of the first diagonal column 30 is attached to the first joint member 34 by inserting the gusset plate 106 into the slit 30c and fitting the drift pin 36 (see FIG. 5) into the through hole 106a.

[0032] The gusset plate 108 protrudes in the direction in which the first diagonal column 30 is inclined, and the gusset plate 108 has a through hole 108a that extends in the direction in which the first diagonal column 30 is inclined and into which the drift pin 36 (see FIG. 5) is fitted. A slit 30d is formed in the upper end of the first wooden part 32b of the first diagonal column 30, and the upper end of the first wooden part 32b of the first diagonal column 30 is attached to the first joint member 34 by inserting the gusset plate 108 into the slit 30d and fitting the drift pin 36 (see FIG. 5) into the through hole 108a.

[0033] In this manner, the first wooden portion 32a and the first wooden portion 32b are joined by the first joint member 34 and the drift pin 36.

[0034] Furthermore, a wooden plate 62 is provided which is attached to the steel beam 20c so that the wood of the first wooden portion 32a and the wood of the first wooden portion 32b are continuous.

[0035] -First diagonal column 30 arranged between foundation beam 12 and steel beam 20b- The first diagonal column 30, which is disposed between the foundation beam 12 and the steel beam 20b, is attached to the foundation beam 12 and the steel beam 20b as shown in Fig. 3. Regarding the first diagonal column 30 disposed between the foundation beam 12 and the steel beam 20b, differences from the first diagonal column 30 disposed between the steel beam 20b and the steel beam 20d will be mainly described.

[0036] As shown in Fig. 6, a gusset plate 110 that protrudes in the direction in which the first diagonal column 30 is inclined is attached to the underside of the steel beam 20b. This gusset plate 110 has a through hole 110a that extends in the direction in which the first diagonal column 30 is inclined and into which the drift pin 36 (see Fig. 5) is fitted. The gusset plate 110 is inserted into a slit 30a formed in the upper end of the first wooden part 32a of the first diagonal column 30, and the drift pin 36 (see Fig. 5) is fitted into the through hole 110a, whereby the upper end of the first diagonal column 30 is attached to the steel beam 20b.

[0037] 8, a base plate 112 is attached to the upper surface of the foundation beam 12 by an anchor bolt and a nut (reference numerals omitted). Furthermore, a gusset plate 114 is attached to the upper surface of the base plate 112, protruding in the direction in which the first diagonal column 30 is inclined. The gusset plate 114 extends in the direction in which the first diagonal column 30 is inclined and has a through hole 114a into which the drift pin 36 (see FIG. 5) is fitted. The gusset plate 114 is inserted into a slit 30b formed in the lower end of the first wooden part 32b of the first diagonal column 30, and the drift pin 36 (see FIG. 5) is fitted into the through hole 114a, whereby the lower end of the first diagonal column 30 is attached to the foundation beam 12.

[0038] 7, a first joint member 38 is provided between the first wooden portion 32a and the first wooden portion 32b. The first joint member 38 is composed of a gusset plate 116 protruding upward from the top surface of the steel beam 20a, a gusset plate 118 protruding downward from the bottom surface of the steel beam 20a, and the portion of the steel beam 20a sandwiched between the gusset plate 116 and the gusset plate 118.

[0039] Furthermore, as shown in Figure 6, a wood plate 60 is provided that is attached to the steel beam 20b so that the wood of the first diagonal column 30, which is located between the foundation beam 12 and the steel beam 20b, is continuous with the wood of the first diagonal column 30, which is located between the steel beam 20b and the steel beam 20d.

[0040] [Second diagonal column 50] The second diagonal column 50 has a mixed structure of wood and metal, and is inclined in the up-down direction so that the upper end of the second diagonal column 50 is located on the other side in the width direction (left side in the figures) of the lower end as shown in Figures 2 and 3. Furthermore, the second diagonal column 50 is disposed between the steel beam 20b and the steel beam 20d (see Figure 2) and between the foundation beam 12 and the steel beam 20b (see Figure 3), and a plurality of second diagonal columns 50 are provided at intervals in the width direction. The second diagonal column 50 and the first diagonal column 30 are disposed so as to form a V shape when viewed from the depth direction.

[0041] The second diagonal column 50 comprises a pair of second wooden parts 52 spaced apart in the longitudinal direction, second metal joint members 54, 58 sandwiched between the pair of second wooden parts 52, and a drift pin 36 (see FIG. 5) that joins the second wooden parts 52 and the second joint members 54, 58. For ease of explanation, the second wooden part 52 arranged on the upper side will be referred to as the second wooden part 52a, and the second wooden part 52 arranged on the lower side will be referred to as the second wooden part 52b.

[0042] -The second diagonal column 50 arranged between the steel beam 20b and the steel beam 20d- The second diagonal column 50, which is disposed between the steel beam 20b and the steel beam 20d, is attached to the steel beam 20b and the steel beam 20d as shown in FIG.

[0043] Specifically, as shown in Fig. 4, a gusset plate 122 that protrudes in the direction in which the second diagonal column 50 is inclined is attached to the lower surface of the steel beam 20d. This gusset plate 122 has a through hole 122a that extends in the direction in which the second diagonal column 50 is inclined and into which the drift pin 36 (see Fig. 5) is fitted. A slit 50a is formed in the upper end of the second wooden part 52a of the second diagonal column 50, and the gusset plate 122 is inserted into this slit 50a, and the drift pin 36 (see Fig. 5) is fitted into the through hole 122a, whereby the upper end of the second diagonal column 50 is attached to the steel beam 20d.

[0044] 6, a gusset plate 124 is attached to the top surface of the steel beam 20b, protruding in the direction in which the second diagonal column 50 is inclined. The gusset plate 124 extends in the direction in which the second diagonal column 50 is inclined, and has a through hole 124a into which the drift pin 36 (see FIG. 5) is fitted. A slit 50b is formed in the lower end of the second wooden part 52b of the second diagonal column 50, and the gusset plate 124 is inserted into the slit 50b, and the drift pin 36 (see FIG. 5) is fitted into the through hole 124a, whereby the lower end of the second diagonal column 50 is attached to the steel beam 20b.

[0045] 9, a second joint member 54 is provided between the second wooden portion 52a and the second wooden portion 52b. The second joint member 54 is composed of a gusset plate 126 protruding upward from the top surface of the steel beam 20c, a gusset plate 128 protruding downward from the bottom surface of the steel beam 20c, and the portion of the steel beam 20c sandwiched between the gusset plate 126 and the gusset plate 128.

[0046] The gusset plate 126 protrudes in the direction in which the second diagonal column 50 is inclined, and the gusset plate 126 has a through hole 126a that extends in the direction in which the second diagonal column 50 is inclined and into which the drift pin 36 (see FIG. 5) is fitted. A slit 50c is formed in the lower end of the second wooden part 52a of the second diagonal column 50, and the lower end of the second wooden part 52a of the second diagonal column 50 is attached to the second joint member 54 by inserting the gusset plate 126 into the slit 50c and fitting the drift pin 36 (see FIG. 5) into the through hole 126a.

[0047] The gusset plate 128 protrudes in the direction in which the second diagonal column 50 is inclined, and the gusset plate 128 has a through hole 128a that extends in the direction in which the second diagonal column 50 is inclined and into which the drift pin 36 (see FIG. 5) is fitted. A slit 50d is formed in the upper end of the second wooden part 52b of the second diagonal column 50, and the upper end of the second wooden part 52b of the second diagonal column 50 is attached to the second joint member 54 by inserting the gusset plate 128 into the slit 50d and fitting the drift pin 36 (see FIG. 5) into the through hole 128a.

[0048] In this manner, the second wooden portion 52a and the second wooden portion 52b are joined by the second joint member 54 and the drift pin 36.

[0049] Furthermore, a wooden plate 64 is provided which is attached to the steel beam 20c so that the wood of the second wooden portion 52a and the wood of the second wooden portion 52b are continuous with each other.

[0050] - A second diagonal column 50 arranged between the foundation beam 12 and the steel beam 20b - The second diagonal column 50, which is disposed between the foundation beam 12 and the steel beam 20b, is attached to the foundation beam 12 and the steel beam 20b as shown in Fig. 3. Regarding the second diagonal column 50 disposed between the foundation beam 12 and the steel beam 20b, differences from the second diagonal column 50 disposed between the steel beam 20b and the steel beam 20d will be mainly described.

[0051] As shown in Fig. 6, a gusset plate 130 that protrudes in the direction in which the second diagonal column 50 is inclined is attached to the underside of the steel beam 20b. This gusset plate 130 has a through hole 130a that extends in the direction in which the second diagonal column 50 is inclined and into which the drift pin 36 (see Fig. 5) is fitted. The gusset plate 130 is inserted into a slit 50a formed in the upper end of the second wooden part 52a of the second diagonal column 50, and the drift pin 36 (see Fig. 5) is fitted into the through hole 130a, whereby the upper end of the second diagonal column 50 is attached to the steel beam 20b.

[0052] 8, a base plate 112 is attached to the upper surface of the foundation beam 12 by an anchor bolt and a nut (reference numerals omitted). A gusset plate 134 is attached to the upper surface of the base plate 112, protruding in the direction in which the second diagonal column 50 is inclined. The gusset plate 134 has a through hole 134a that extends in the direction in which the second diagonal column 50 is inclined and into which the drift pin 36 (see FIG. 5) is fitted. The gusset plate 134 is inserted into a slit 50b formed in the lower end of the second wooden part 52b of the second diagonal column 50, and the drift pin 36 (see FIG. 5) is fitted into the through hole 134a, whereby the lower end of the second diagonal column 50 is attached to the foundation beam 12.

[0053] 9, a second joint member 58 is provided between the second wooden portion 52a and the second wooden portion 52b. The second joint member 58 is composed of a gusset plate 136 protruding upward from the top surface of the steel beam 20a, a gusset plate 138 protruding downward from the bottom surface of the steel beam 20a, and a portion of the steel beam 20a sandwiched between the gusset plate 136 and the gusset plate 138.

[0054] Furthermore, as shown in Figure 6, a wood plate 60 is provided that is attached to the steel beam 20b so that the wood of the second diagonal column 50, which is located between the foundation beam 12 and the steel beam 20b, is continuous with the wood of the second diagonal column 50, which is located between the steel beam 20b and the steel beam 20d.

[0055] [First tension member 70] 2 and 3, the first tension members 70 are inclined in the up-down direction so as to follow the first diagonal columns 30. Furthermore, the first tension members 70 are disposed between the steel beams 20b and 20d (see FIG. 2) and between the foundation beam 12 and the steel beams 20b (see FIG. 3), and are provided in plurality at intervals in the width direction and disposed between adjacent first diagonal columns 30.

[0056] The first tension member 70 includes a pair of first tension rods 72 spaced apart in the longitudinal direction, and first metal joint members 74, 78 sandwiched between the pair of first tension rods 72. For ease of explanation, the first tension rod 72 disposed on the upper side will be referred to as the first tension rod 72a, and the first tension rod 72 disposed on the lower side will be referred to as the first tension rod 72b.

[0057] -First tension member 70 disposed between steel beam 20b and steel beam 20d- The first tension member 70, which is disposed between the steel beam 20b and the steel beam 20d, is attached to the steel beam 20b and the steel beam 20d as shown in Fig. 2. The first tension member 70 intersects with the second diagonal column 50 at a position where the steel beam 20c passes.

[0058] 10, a mounting plate 142 that protrudes in the inclined direction of the first tension member 70 is attached to the lower surface of the steel beam 20d. The upper end of the first tension rod 72a is attached to the mounting plate 142 using a mounting member (not shown).

[0059] 11, a mounting plate 144 is attached to the upper surface of the steel beam 20b, protruding in the direction in which the first tension member 70 is inclined. The lower end of the first tension rod 72b is attached to the mounting plate 144 using a mounting member (not shown).

[0060] 9, a first connection member 74 is provided between the first tension rod 72a and the first tension rod 72b. The first connection member 74 is composed of a mounting plate 146 protruding upward from the upper surface of the steel beam 20c, a mounting plate 148 protruding downward from the lower surface of the steel beam 20c, and a portion of the steel beam 20c sandwiched between the mounting plate 146 and the mounting plate 148.

[0061] The mounting plate 146 protrudes in the inclined direction of the first tension member 70. The lower end of the first tension rod 72a is attached to the mounting plate 146 by using a mounting member (not shown).

[0062] The mounting plate 148 protrudes in the inclined direction of the first tension member 70. The upper end of the first tension rod 72b is attached to the mounting plate 148 by using a mounting member (not shown).

[0063] In this manner, the first tension rod 72a and the first tension rod 72b are joined by the first joint member 74.

[0064] -First tension member 70 arranged between the foundation beam 12 and the steel beam 20b- The first tension member 70, which is disposed between the foundation beam 12 and the steel beam 20b, is attached to the foundation beam 12 and the steel beam 20b as shown in Fig. 3. The first tension member 70 intersects with the second diagonal column 50 at a position where the steel beam 20a passes. Regarding the first tension member 70 disposed between the foundation beam 12 and the steel beam 20b, differences from the first tension member 70 disposed between the steel beam 20b and the steel beam 20d will be mainly described.

[0065] 11, a mounting plate 150 is attached to the lower surface of the steel beam 20b, protruding in the direction in which the first tension member 70 is inclined. The upper end of the first tension rod 72a is attached to the mounting plate 150 using a mounting member (not shown).

[0066] 12, a base plate 152 is attached to the upper surface of the foundation beam 12 with anchor bolts and nuts (reference numbers omitted). Furthermore, a mounting plate 154 that protrudes in the direction in which the first tension member 70 tilts is attached to the upper surface of the base plate 152. The lower end of the first tension rod 72b is attached to the mounting plate 154 using a mounting member (not shown).

[0067] 9, a first connection member 78 is provided between the first tension rod 72a and the first tension rod 72b. The first connection member 78 is composed of a mounting plate 156 protruding upward from the upper surface of the steel beam 20a, a mounting plate 158 protruding downward from the lower surface of the steel beam 20a, and a portion of the steel beam 20a sandwiched between the mounting plate 156 and the mounting plate 158.

[0068] The mounting plate 156 protrudes in the inclined direction of the first tension member 70. The lower end of the first tension rod 72a is attached to the mounting plate 156 by using a mounting member (not shown).

[0069] Further, the mounting plate 158 protrudes in the inclined direction of the first tension member 70. The upper end of the first tension rod 72b is attached to the mounting plate 158 using a mounting member (not shown).

[0070] In this manner, the first tension rod 72a and the first tension rod 72b are joined by the first joint member 78.

[0071] [Second tension member 90] 2 and 3, the second tension members 90 are inclined in the up-down direction so as to follow the second diagonal columns 50. Furthermore, the second tension members 90 are disposed between the steel beams 20b and 20d (see FIG. 2) and between the foundation beams 12 and the steel beams 20b (see FIG. 3), and are provided in plurality at intervals in the width direction and disposed between adjacent second diagonal columns 50. The second tension members 90 and the first tension members 70 are disposed so as to form a V-shape when viewed from the depth direction.

[0072] The second tension member 90 also includes a pair of second tension rods 92 spaced apart in the longitudinal direction, and second metal joint members 94, 98 sandwiched between the pair of second tension rods 92. For ease of explanation, the second tension rod 92 disposed on the upper side will be referred to as the second tension rod 92a, and the second tension rod 92 disposed on the lower side will be referred to as the second tension rod 92b.

[0073] - A second tension member 90 disposed between the steel beam 20b and the steel beam 20d - The second tension member 90, which is disposed between the steel beam 20b and the steel beam 20d, is attached to the steel beam 20b and the steel beam 20d as shown in Fig. 2. The second tension member 90 intersects with the first diagonal column 30 at a position where the steel beam 20c passes.

[0074] 10, a mounting plate 162 that protrudes in the inclined direction of the second tension member 90 is attached to the lower surface of the steel beam 20d. The upper end of the second tension rod 92a is attached to the mounting plate 162 using a mounting member (not shown).

[0075] 11, a mounting plate 164 is attached to the upper surface of the steel beam 20b, protruding in the direction in which the second tension member 90 is inclined. The lower end of the second tension rod 92b is attached to the mounting plate 164 using a mounting member (not shown).

[0076] 7, a second joint member 94 is provided between the second tension rod 92a and the second tension rod 92b. The second joint member 94 is composed of a mounting plate 166 protruding upward from the upper surface of the steel beam 20c, a mounting plate 168 protruding downward from the lower surface of the steel beam 20c, and a portion of the steel beam 20c sandwiched between the mounting plate 166 and the mounting plate 168.

[0077] The mounting plate 166 protrudes in the inclined direction of the second tension member 90. The lower end of the second tension rod 92a is attached to the mounting plate 166 by using a mounting member (not shown).

[0078] Further, the mounting plate 168 protrudes in the inclined direction of the second tension member 90. The upper end of the second tension rod 92b is attached to the mounting plate 168 by using a mounting member (not shown).

[0079] In this manner, the second tension rod 92a and the second tension rod 92b are joined by the second joint member 94.

[0080] - A second tension member 90 disposed between the foundation beam 12 and the steel beam 20b - The second tension member 90, which is disposed between the foundation beam 12 and the steel beam 20b, is attached to the foundation beam 12 and the steel beam 20b as shown in Fig. 3. The second tension member 90 intersects with the first diagonal column 30 at a position where the steel beam 20a passes through. Note that, regarding the second tension member 90 disposed between the foundation beam 12 and the steel beam 20b, the following mainly describes the differences from the second tension member 90 disposed between the steel beam 20b and the steel beam 20d.

[0081] 11, a mounting plate 170 is attached to the lower surface of the steel beam 20b, protruding in the direction in which the second tension member 90 is inclined. The upper end of the second tension rod 92a is attached to the mounting plate 170 using a mounting member (not shown).

[0082] 12, a base plate 152 is attached to the upper surface of the foundation beam 12 with anchor bolts and nuts (reference numbers omitted). Furthermore, a mounting plate 174 that protrudes in the direction in which the second tension member 90 inclines is attached to the upper surface of the base plate 152. The lower end of the second tension rod 92b is attached to the mounting plate 174 using a mounting member (not shown).

[0083] 7, a second joint member 98 is provided between the second tension rod 92a and the second tension rod 92b. The second joint member 98 is composed of a mounting plate 176 protruding upward from the top surface of the steel beam 20a, a mounting plate 178 protruding downward from the bottom surface of the steel beam 20a, and a portion of the steel beam 20a sandwiched between the mounting plate 176 and the mounting plate 178.

[0084] The mounting plate 176 protrudes in the inclined direction of the second tension member 90. The lower end of the second tension rod 92a is attached to the mounting plate 176 by using a mounting member (not shown).

[0085] Furthermore, the mounting plate 178 protrudes in the inclined direction of the second tension member 90. The upper end of the second tension rod 92b is attached to the mounting plate 178 using a mounting member (not shown).

[0086] In this manner, the second tension rod 92a and the second tension rod 92b are joined by the second joint member 98.

[0087] (action) Next, a description will be given of the operation of the earthquake-resistant structure 10. Specifically, a description will be given of the resistance force generated in the earthquake-resistant structure 10 when an earthquake occurs.

[0088] 13(A) and 14(A), when a horizontal force acts on the earthquake-resistant structure 10 from the other side (the left side in the figure) to one side (the right side in the figure) in the width direction, a compressive force acts on the second diagonal column 50, and a tensile force acts on the first diagonal column 30. Furthermore, a tensile force acts on the first tension member 70.

[0089] Here, the first diagonal column 30 and the second diagonal column 50 have a mixed structure of wood and metal. That is, a compressive resistance is generated in the second wooden parts 52a, 52b of the second diagonal column 50. Furthermore, a tensile resistance is generated in the first wooden parts 32a, 32b of the first diagonal column 30. The tensile resistance generated in the first wooden parts 32a, 32b of the first diagonal column 30 acts on the drift pins 36 (see FIG. 5) that join the first wooden parts 32a, 32b to the first joint members 34, 38.

[0090] On the other hand, as described above, a tensile force acts on the first tension member 70, generating a tensile resistance force. As a result, the force acting on the drift pin 36 (see FIG. 5) that joins the first wooden parts 32a, 32b to the first joint members 34, 38 is smaller than when the first tension member 70 is not provided.

[0091] 13(B) and 14(B), when a horizontal force acts on the earthquake-resistant structure 10 from one side to the other in the width direction, a compressive force acts on the first diagonal column 30 and a tensile force acts on the second diagonal column 50. Furthermore, a tensile force acts on the second tension member 90.

[0092] Here, a compressive resistance is generated in the first wooden parts 32a, 32b of the first diagonal column 30. Furthermore, a tensile resistance is generated in the second wooden parts 52a, 52b of the second diagonal column 50. The tensile resistance generated in the second wooden parts 52a, 52b of the second diagonal column 50 acts on the drift pins 36 (see FIG. 5) that join the second wooden parts 52a, 52b to the second joint members 54, 58.

[0093] On the other hand, as described above, a tensile force acts on the second tension member 90, generating a tensile resistance force. As a result, the force acting on the drift pin 36 (see FIG. 5) that joins the second wooden parts 52a, 52b to the second joint members 54, 58 becomes smaller than when the second tension member 90 is not provided.

[0094] 13(A) and 14(A), when a horizontal force acts on the earthquake-resistant structure 10 from the other side (the left side in the figure) to one side (the right side in the figure) in the width direction, a compressive force acts on the second diagonal column 50, and a tensile force acts on the first diagonal column 30. Furthermore, a tensile force acts on the first tension member 70.

[0095] The tensile resistance force generated in the first diagonal column 30 acts on the drift pin 36 (see FIG. 5) that connects the first diagonal column 30 to the gusset plates 102, 104 (see FIGS. 4 and 6).

[0096] On the other hand, as described above, a tensile force acts on the first tension member 70, generating a tensile resistance force, which reduces the force acting on the drift pin 36 (see FIG. 5) that connects the first diagonal column 30 to the gusset plates 102, 104 (see FIGS. 4 and 6) compared to the case where the first tension member 70 is not provided.

[0097] 13(B) and 14(B), when a horizontal force acts on the earthquake-resistant structure 10 from one side to the other in the width direction, a compressive force acts on the first diagonal column 30 and a tensile force acts on the second diagonal column 50. Furthermore, a tensile force acts on the second tension member 90.

[0098] The tensile resistance force generated in the second diagonal column 50 acts on the drift pin 36 (see FIG. 5) that connects the second diagonal column 50 to the gusset plates 122, 124 (see FIGS. 4 and 6).

[0099] On the other hand, as described above, a tensile force acts on the second tension member 90, generating a tensile resistance force, which reduces the force acting on the drift pin 36 (see FIG. 5) that connects the second diagonal column 50 to the gusset plates 122, 124 (see FIG. 4 and FIG. 6) compared to the case where the second tension member 90 is not provided.

[0100] (summary) As described above, in the earthquake-resistant structure 10, when a horizontal force acts on the earthquake-resistant structure 10 from the other side to one side in the width direction, the tensile resistance force generated in the first wooden parts 32a, 32b of the first diagonal column 30 acts on the drift pin 36 that joins the first wooden parts 32a, 32b to the first joint members 34, 38. On the other hand, a tensile force acts on the first tension member 70, generating a tensile resistance force. As a result, the force acting on the drift pin 36 that joins the first wooden parts 32a, 32b to the first joint members 34, 38 becomes smaller than when the first tension member 70 is not provided. Therefore, in a configuration in which a diagonal wooden column of a mixed structure is used, the number of drift pins 36 used to join the first wooden parts 32a, 32b to the first joint members 34, 38 can be reduced.

[0101] On the other hand, when a horizontal force acts on the earthquake-resistant structure 10 from one side to the other side in the width direction, the tensile resistance force generated in the second wooden parts 52a, 52b of the second diagonal column 50 acts on the drift pins 36 that connect the second wooden parts 52a, 52b to the second joint members 54, 58. On the other hand, a tensile force acts on the second tension member 90, generating a tensile resistance force. As a result, the force acting on the drift pins 36 that connect the second wooden parts 52a, 52b to the second joint members 54, 58 is smaller than when the second tension member 90 is not provided. Therefore, in a configuration in which a diagonal wooden column of a mixed structure is used, the number of drift pins 36 used to connect the second wooden parts 52a, 52b to the second joint members 54, 58 can be reduced.

[0102] In the earthquake-resistant structure 10, the first diagonal columns 30 and the second diagonal columns 50 are arranged so as to form a V shape, the first tension members 70 are arranged between adjacent first diagonal columns 30, and the second tension members 90 are arranged between adjacent second diagonal columns 50. This improves the design compared to a case where the first diagonal columns 30, the second diagonal columns 50, the first tension members 70, and the second tension members 90 are irregularly arranged.

[0103] In the earthquake-resistant structure 10, the through holes 106a, 108a, 116a, 118a, 126a, 128a, 136a, 138a formed in the first joint members 34, 38 and the second joint members 54, 58 are elongated holes extending in the tensile direction of the first diagonal column 30 or the second diagonal column 50. As a result, when a tensile force acts on the first wooden part 32 or the second wooden part 52, the first wooden part 32 or the second wooden part 52 moves in the tensile direction by the amount of the elongated hole, thereby preventing damage to the first wooden part 32 or the second wooden part 52.

[0104] 13(A) and 14(A), when a horizontal force acts on the earthquake-resistant structure 10 from the other side (left side in the figure) in the width direction to one side (right side in the figure), a compressive force acts on the second diagonal column 50 and a tensile force acts on the first diagonal column 30. Furthermore, a tensile force acts on the first tension member 70.

[0105] On the other hand, a tensile force acts on the first tension member 70, generating a tensile resistance force. As a result, compared to a case in which the first tension member 70 is not provided, the force acting on the drift pins 36 that connect the first diagonal column 30 to the gusset plates 102, 104 is smaller, and the number of drift pins 36 can be reduced.

[0106] 13(B) and 14(B), when a horizontal force acts on the earthquake-resistant structure 10 from one side to the other in the width direction, a compressive force acts on the first diagonal column 30 and a tensile force acts on the second diagonal column 50. Furthermore, a tensile force acts on the second tension member 90.

[0107] On the other hand, a tensile force acts on the second tension member 90, generating a tensile resistance force. As a result, compared to a case in which the second tension member 90 is not provided, the force acting on the drift pins 36 that connect the second diagonal column 50 to the gusset plates 122, 124 is smaller, and the number of drift pins 36 can be reduced.

[0108] Although the present disclosure has been described in detail with respect to a specific embodiment, it is clear to those skilled in the art that the present disclosure is not limited to the embodiment, and various other embodiments are possible within the scope of the present disclosure. For example, in the above embodiment, the joining member is described as the drift pin 36, but the joining member may be a bolt nut, etc.

[0109] In the above embodiment, the first diagonal pillar 30 includes a pair of first wooden parts 32 spaced apart in the longitudinal direction, a first joint member 34 sandwiched between the pair of first wooden parts 32, and a drift pin 36 joining the first wooden parts 32 and the first joint member 34, but it may include only wooden parts. In this case, however, the effects achieved by having the pair of first wooden parts 32, the first joint member 34, and the drift pin 36 will not be achieved.

[0110] In the above embodiment, the second diagonal pillar 50 includes a pair of second wooden parts 52 spaced apart in the longitudinal direction, a second joint member 54 sandwiched between the pair of second wooden parts 52, and a drift pin 36 joining the second wooden parts 52 and the second joint member 54, but it may include only wooden parts. In this case, however, the effects achieved by having the pair of second wooden parts 52, the second joint member 54, and the drift pin 36 are not achieved.

[0111] In addition, in the above embodiment, the earthquake-resistant structure 10 constitutes the outer shell of the building 100, but it may also be constructed inside the building. [Explanation of symbols]

[0112] 10 Earthquake-resistant structure 12 Foundation beam (example of beam) 20 Steel beam (example of beam) 20b Steel beam (example of beam) 20d Steel beam (example of beam) 30 First diagonal column 32 First xylem 32a First xylem 32b First xylem 34 First joint member 36 Drift pin (an example of the first joining member and the second joining member) 38 First joint member 50 Second diagonal column 52 Second xylem 52a Second xylem 52b Second xylem 54 Second joint member 58 Second joint member 70 First tension member 90 Second tension member 106a Through hole (an example of a first through hole) 108a Through hole (an example of a first through hole) 116a Through hole (an example of a first through hole) 118a Through hole (an example of a first through hole) 126a Through hole (an example of a second through hole) 128a Through hole (an example of a second through hole) 136a Through hole (an example of a second through hole) 138a Through hole (an example of a second through hole)

Claims

1. A pair of beams arranged apart in the vertical direction; a first diagonal column having ends attached to the pair of beams, inclined to one side, and having a pair of long first wooden parts, a first joint member sandwiched between the pair of first wooden parts, and a first joint member joining the first joint member and the first wooden parts; a second diagonal column having ends attached to the pair of beams, disposed next to the first diagonal column, and inclined toward the other side, the second diagonal column having a pair of elongated second wooden parts, a second joint member sandwiched between the pair of second wooden parts, and a second joint member joining the second joint member and the second wooden parts; a first tension member having ends attached to the pair of beams, disposed along the first diagonal column, and configured to withstand a tensile force; a second tension member having ends attached to the pair of beams, disposed along the second diagonal column, and configured to withstand a tensile force; Earthquake-resistant structure.

2. The first diagonal pillar and the second diagonal pillar are provided in a plurality of positions spaced apart from each other in the horizontal direction, The first diagonal column and the second diagonal column are arranged so as to form a V shape, The first tension members are disposed between adjacent first diagonal columns, The second tension member is disposed between adjacent second diagonal columns.

2. The earthquake-resistant structure according to claim 1.

3. The first joining member is a drift pin, The first joint member has a first through hole into which the first joining member is fitted and which extends in the tensile direction of the first wooden portion, The second joining member is a drift pin, The second joint member has a second through hole into which the second joining member is fitted and which extends in the tensile direction of the second wooden portion.

2. The earthquake-resistant structure according to claim 1.

4. A pair of beams arranged apart in the vertical direction; A first diagonal column is attached to the pair of beams at its ends, is inclined to one side, and is formed by including a long first wooden portion; A second diagonal column is attached to the pair of beams at its ends, disposed next to the first diagonal column, and inclined toward the other side and formed by including a long second wooden portion; A first tension member is attached at its ends to the pair of beams and is disposed along the first diagonal column; A second tension member is attached at its ends to the pair of beams and is disposed along the second diagonal column; First joint members that join the pair of beams to both ends of the first diagonal column, second joint members that join the pair of beams to both ends of the second diagonal columns, respectively; Earthquake-resistant structure.

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