Joint structure

Abstract

To minimize the deformation of drift pins when wooden columns undergo tensile deformation.SOLUTION: A joint structure 102 comprises: a steel member 110 provided at a joint 100 between a wooden column 50 and a steel beam 30; a steel plate 150 inserted into a column member 52U that protrudes upward from the steel member 110 and forms an upper side of the joint 110 in the wooden column 50 and has a long through hole 152 with a vertical direction as its lengthwise direction; and a drift pin 106 that penetrates from a side of the column member 52U and is inserted into the through hole 152 of the steel plate 150.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a joint structure. [Background technology]

[0002] Patent Document 1 discloses a technology related to a column base structure that performs energy absorption. In this prior art column base structure, a long base is installed on a foundation via piece-shaped base packing, and a column is erected on the base. An outer cylinder is oriented vertically and is provided integrally with the base at the base below the column, and a shaft is arranged coaxially within the outer cylinder and is also provided integrally with the base. A viscoelastic body is provided in the annular space between the inner periphery of the outer cylinder and the outer periphery of the shaft, and relative vertical displacement between the outer cylinder and the shaft causes shear deformation of the viscoelastic body to absorb energy.

[0003] Patent Document 2 discloses technology related to metal rods used to install components in wooden buildings and other structures. In this prior art, metal rods connecting a main material, such as a column, to another material, such as a column base, are composed of a fixing region that is embedded in a pilot hole in the column (main material) and a deformation region that is integrated with the column base (other material) via a bolt. To integrate the fixing region with the column, the fixing region is provided with a fixing means such as a ridge. The deformation region is made of a material with a lower modulus of longitudinal elasticity than the fixing region, and the deformation region and fixing region are positioned coaxially and joined at their end faces. By using such metal rods, when an excessive tensile load acts between the main material and the other material, elastic-plastic deformation occurs in the deformation region, absorbing impact and preventing damage to the main material (component). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-31789 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-132868 Summary of the Invention [Problem to be solved by the invention]

[0005] In a joint using a drift pin between a wooden column and a beam, if excessive tensile deformation occurs in the wooden column, the deformation of the drift pin becomes large and there is a risk that the drift pin may break.

[0006] In view of the above, an object of the present invention is to reduce the amount of deformation of the drift pin when the wooden post is subjected to tensile deformation. [Means for solving the problem]

[0007] The first aspect is a joint structure comprising a steel frame member provided at the joint between a wooden column and a beam, a steel plate member protruding upward from the steel frame member and inserted into an upper column member constituting the upper side of the joint in the wooden column, the steel plate member having a long hole with its longitudinal direction in the vertical direction, and a drift pin inserted from the side of the upper column member and inserted into the long hole in the steel plate member.

[0008] In the joint structure of the first type, when the wooden column is deformed by tension, the drift pin does not begin to deform until it hits the upper end of the long hole, so the amount of deformation of the drift pin is smaller than when the long hole is a perfect circle.

[0009] The second aspect is a joint structure comprising a steel frame member provided at a joint between a wooden column and a beam, a pair of first steel plate members inserted at intervals in the column width direction into an upper column member constituting the upper side of the joint in the wooden column and having pin holes formed at the top, a second steel plate member protruding upward from the steel frame member and inserted between the pair of first steel plate members, a rubber member joined to the inner surface of the first steel plate member and the outer surface of the second steel plate member below the pin holes, and a drift pin that penetrates from the side of the upper column member and is inserted into the pin hole of the first steel plate member above the rubber member and above the upper end of the second steel plate member.

[0010] In the joint structure of the second embodiment, when the wooden post is tensile deformed, the drift pin does not begin to deform until the rigidity of the rubber material exceeds the rigidity of the drift pin, so the amount of deformation of the drift pin is small.

[0011] The third aspect is a joint structure comprising a steel frame member provided at a joint between a wooden column and a beam, a pair of first steel plate members inserted at intervals in the column width direction into an upper column member constituting the upper side of the joint in the wooden column and having pin holes formed at the top, a second steel plate member protruding upward from the steel frame member and inserted between the pair of first steel plate members and having a long hole formed at the top with the vertical direction as its longitudinal direction, a rubber member joined to the inner surface of the first steel plate member and the outer surface of the second steel plate member below the pin hole and the long hole, and a drift pin inserted from the side of the upper column member and inserted into the pin hole of the first steel plate member and the long hole of the second steel plate member.

[0012] In the joint structure of the third type, when the wooden column is tensile deformed, the rubber material only undergoes shear deformation until the drift pin hits the upper end of the slot, preventing the rubber material from breaking due to excessive deformation.In addition, the slot functions as a fail-safe in case the rubber material melts in a fire. [Effects of the Invention]

[0013] According to the present invention, the amount of deformation of the drift pin when the wooden post is tensile deformed can be reduced. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic configuration diagram of a building according to a first embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the main parts of the building of the first embodiment. [Figure 3] FIG. 2 is a longitudinal cross-sectional view of the joint structure of the first embodiment taken along the Y direction. [Figure 4] FIG. 2 is a longitudinal cross-sectional view of the joint structure of the first embodiment taken along the X direction. [Figure 5]5A to 5C are explanatory diagrams showing the deformation of the drift pin when the wooden post in the joint structure of the first embodiment is deformed by tension, in order. [Figure 6] FIG. 10 is a longitudinal cross-sectional view of the joint structure of the second embodiment taken along the Y direction. [Figure 7] FIG. 10 is a longitudinal cross-sectional view of the joint structure of the second embodiment taken along the X direction. [Figure 8] 10A to 10C are explanatory diagrams showing the deformation of the drift pin when the wooden post in the joint structure of the second embodiment is deformed by tension, in order. [Figure 9] FIG. 10 is a longitudinal cross-sectional view of the joint structure of the third embodiment taken along the Y direction. [Figure 10] FIG. 10 is a longitudinal cross-sectional view taken along the X direction of the joint structure of the third embodiment. [Figure 11] 10A to 10C are explanatory diagrams showing the deformation of the drift pin when the wooden post in the joint structure of the third embodiment is deformed by tension, in order. [Figure 12] 10A to 10C are explanatory diagrams showing the deformation of a drift pin when a wooden post in a joint structure of a comparative example is tensile deformed, in order. [Figure 13] FIG. 10 is a cross-sectional perspective view illustrating the fire-resistant structure of the pillar material. [Figure 14] A vertical cross-sectional view along the Y direction of a main part of a joint structure of a modified example of the third embodiment. [Figure 15] 10A to 10C are explanatory diagrams for explaining shock absorption, showing in order the process in which a wooden column in a joint structure of a modified example undergoes tensile deformation and returns to its original shape. DETAILED DESCRIPTION OF THE INVENTION

[0015] First Embodiment A joint structure according to a first embodiment of the present invention will be described.

[0016] The two directions perpendicular to the horizontal direction are the X direction and the Y direction, respectively indicated by the arrows X and Y. The vertical direction perpendicular to the X direction and the Y direction is the Z direction, indicated by the arrow Z.

[0017] Furthermore, each drawing is merely a schematic illustration. Furthermore, the dimensions, ratios, etc. of each element shown in the drawings may not necessarily correspond to the actual ones. Furthermore, the dimensions, ratios, numbers, etc. of each element may not necessarily correspond between multiple drawings. Furthermore, in this embodiment, explanations of configurations not directly related to the present invention and well-known configurations may be omitted or simplified. This also applies to the second embodiment and modified examples described below.

[0018] [Building structure] First, the general structure of a building to which the joint structure of this embodiment is applied will be described.

[0019] The building 10 of this embodiment shown in FIG. 1 is a medium- to high-rise building with a mixed structure that combines reinforced concrete, steel frames, steel-framed reinforced concrete, and wood materials, but is not limited to this.

[0020] The skeleton of the building 10 is composed of a reinforced concrete slab 24, steel columns 20, 22, steel beams 30, a steel-reinforced concrete joint 100, and a wooden column 50 (see also FIG. 2). In this embodiment, the steel columns 20, 22 constitute the two on the left side in FIG. 1, and the wooden column 50 constitutes the column at the right end, but this is not limited to this.

[0021] In this embodiment, the steel columns 20 and 22 are made of steel pipes, but are not limited to this (see also FIG. 2). Similarly, in this embodiment, the steel beam 30 is made of H-shaped steel, but is not limited to this (see also FIG. 2).

[0022] 1 and 2, the wooden column 50 of this embodiment is constructed by joining wooden column materials 52 above and below a joint 100. As shown in Fig. 2, when referring to the column material 52 on the upper side of the joint 100, the letter U is added after the reference numeral 52 to make it column material 52U, and when referring to the column material 52 on the lower side of the joint 100, the letter L is added after the reference numeral 52 to make it column material 52L; when no distinction is necessary, they are referred to as column material 52.

[0023] Here, the structure of the pillar material 52 of the wooden pillar 50 of this embodiment will be described with reference to Fig. 13. Note that the structure of the pillar material 52 described with reference to Fig. 13 is one example, and the structure is not limited to this.

[0024] As shown in Figure 13, wooden pillar 52 is made of fire-resistant laminated lumber. Specifically, pillar 52 has wooden load-bearing portion 40 that supports the load, and fire-resistant layer 46 that provides fire-resistant coating to load-bearing portion 18. Fire-resistant layer 46 includes fire-stopping layer 42 that surrounds load-bearing portion 40, and wooden fuel-substitution layer 44 that surrounds fire-stopping layer 42. Fire-stopping layer 42 is made up of a plurality of cement-based hardened bodies 43 and wooden boards 45 that are alternately arranged along the outer periphery of load-bearing portion 18.

[0025] As shown in Figures 1 and 2, the joint 100 of the aforementioned steel-reinforced concrete structure is a joint between a wooden column 50 and a steel beam 30, and the joint structure of this embodiment is applied to the joining of this joint 100 with the column material 52U.

[0026] [Connection structure] Next, the joint structure will be explained.

[0027] 3 and 4, the joint 100 of the steel-reinforced concrete structure of this embodiment is composed of steel frame members 110, reinforcing bars 109 (see FIG. 2), and a concrete section 108. The joint structure 102 is composed of the steel frame members 110, a steel plate section 150, and a drift pin 106.

[0028] The steel frame 110 is configured to have a main body 111 made of H-shaped steel and base plate portions 120, 122 made of T-shaped steel. The tips of webs 124, 125 of the base plate portions 120, 122 of the T-shaped steel are joined to upper and lower flanges 112, 113 of the main body portion 111 of the H-shaped steel. The flanges of the base plate portions 120, 122 of the T-shaped steel then form upper and lower base plates 121, 123 of the steel frame 110.

[0029] A steel plate portion 150 is joined to the base plate 121 of the upper base plate portion 120 of the steel frame material 110 .

[0030] As shown in Fig. 2, reinforcing bars 109 are arranged around the steel frame material 110 and concrete is poured to construct a concrete portion 108 shown in Fig. 3 and Fig. 4. Note that the concrete portion 108 is not shown in Fig. 2, and the reinforcing bars 109 are not shown in Fig. 3 and Fig. 4.

[0031] As shown in Fig. 4, an end 114 of a main body 111 of a steel frame 110 made of H-shaped steel is exposed from the concrete portion 108. A steel beam 30 is joined to this end 114. In this embodiment, the end 114 and the steel beam 30 are joined by welding, but the present invention is not limited to this.

[0032] As shown in Figures 3 and 4, the upper and lower base plates 121, 123 of the steel frame 110 abut against the load-bearing portions 40 of the upper column 52U and the lower column 52L. The lower column 52L and the lower base plate 123 of the steel frame 110 are joined by lag screw bolts 107. A recess 61 into which the upper base plate 121 fits is formed at the lower end of the load-bearing portion 40 of the column 52 (see also Figure 5(B)). Note that the joining between the lower column 52L and the lower base plate 123 of the steel frame 110 is not limited to the lag screw bolts 107, and other joining methods may be used.

[0033] A steel plate portion 150 welded to the upper base plate 121 of the steel frame material 110 and protruding upward is inserted into a notch (not shown) formed in the load support portion 40 of the upper column material 52U. An insertion hole 152 is formed in the steel plate portion 150. The insertion hole 152 is an elongated hole with its longitudinal direction in the vertical direction. A drift pin 106 is inserted into a through hole (not shown) formed horizontally in the upper column material 52U and the insertion hole 152. The drift pin 106 is in contact with or close to the lower end of the insertion hole 152.

[0034] 4, in this embodiment, there are two insertion holes 152 and two drift pins 106, but the present invention is not limited to this. Also, as shown in FIG. 3, the overall length of the drift pin 106 is the same as or approximately the same as the length of the load support part 40, and both ends of the through hole (not shown) in the fire-resistant layer 46 are blocked with a filler, a wooden plug, or the like.

[0035] [Effect] Next, the operation of this embodiment will be described.

[0036] As shown in FIGS. 1 and 5(A) to 5(C), during an earthquake, a tensile force K acts on the wooden column 50 due to an earthquake force S (see FIG. 1).

[0037] As shown in Fig. 5(B), even if the wooden column 50 is tensilely deformed by the tensile force K, the drift pin 106 does not bend until it hits the upper end of the insertion hole 152, which is a long hole in the steel plate part 150. Then, as shown in Fig. 5(C), excessive tensile deformation occurs in the wooden column 50, and the drift pin 106 hits the upper end of the insertion hole 152 and begins to bend.

[0038] Next, a comparative joint structure 502 shown in Fig. 12(A) will be described. In the comparative joint structure 502, the insertion hole 552 in the steel plate portion 150 through which the drift pin 106 is inserted is not an elongated hole but is substantially circular.

[0039] Therefore, as shown in Fig. 12(B), when the wooden column 50 is tensilely deformed by the tensile force K, the drift pin 106 immediately begins to bend. Then, as shown in Fig. 12(C), if excessive tensile deformation occurs in the wooden column 50, the drift pin 106 will bend significantly, and there is a risk that the drift pin 106 will break.

[0040] In contrast, as described above, in the joint structure 102 of this embodiment shown in Figures 5(A) to 5(C), the hole in the steel plate section 150 through which the drift pin 106 is inserted is a long hole, so as shown in Figure 5(B), the drift pin 106 does not begin to bend until it hits the upper end of the insertion hole 152.

[0041] Therefore, in the joint structure 102 of this embodiment, in which the insertion hole 152 is an elongated hole, the bending deformation of the drift pin 106 is smaller when the tensile deformation of the wooden column 50 is the same, compared to the joint structure 502 of the comparative example, in which the insertion hole 552 is a perfect circle or a nearly perfect circle. Therefore, as shown in Fig. 5(C), breakage of the drift pin 106 when excessive tensile deformation occurs in the wooden column 50 can be prevented or suppressed (see also Fig. 12(C)).

[0042] The length of the insertion hole 152, i.e., the tensile deformation amount of the wooden column 50 at which the drift pin 106 begins to bend, is set to be equal to or less than the tensile deformation amount of the wooden column 50 at the time of the primary design or at the time of the ultimate strength. The tensile deformation amount of the wooden column 50 at the time of the primary design or at the time of the ultimate strength is determined by appropriate analysis for each building.

[0043] Furthermore, as shown in Fig. 5(B), the wooden column 50 of this embodiment does not withstand the tensile force until the drift pin 106 hits the upper end of the insertion hole 152. However, other columns, such as the steel columns 20 and 22 shown in Fig. 1 in this embodiment, withstand the tensile force, so this does not cause a problem for the building 10 as a whole.

[0044] Second Embodiment A joint structure according to a second embodiment of the present invention will now be described.

[0045] The same components as those in the first embodiment are designated by the same reference numerals, and redundant explanations will be omitted or simplified. Also, the general structure of a building to which the joint structure of the second embodiment is applied is the same as that of the first embodiment, so explanations will be omitted.

[0046] [Connection structure] The joint structure of this embodiment will be described.

[0047] 6 and 7, the joint structure 202 is configured to include a steel frame 110, two first steel plate portions 210, a second steel plate portion 250, and a drift pin 106. The second steel plate portion 250 is joined to the base plate 121 of the base plate portion 120 on the upper side of the steel frame 110.

[0048] The two first steel plate portions 210 are inserted into and embedded in notches (not shown) formed in the load-supporting portion 40 of the upper column material 52U. The two first steel plate portions 210 are embedded in the column material 52U with a gap between them in the column width direction, which in this embodiment is the Y direction. Two pin holes 212 are formed in each of the first steel plate portions 210. The pin holes 212 are perfect circles or approximately perfect circles.

[0049] The second steel plate portion 250, which is joined to the upper base plate 121 and protrudes upward, is inserted between the two first steel plate portions 210. An upper end portion 252 of the second steel plate portion 250 is located below the pin hole 212. A rubber material 220 is joined to the inner surface of the first steel plate portion 210 and the outer surface of the second steel plate portion 250 below the pin hole 212.

[0050] The drift pin 106 is inserted into a through hole (not shown) formed horizontally in the upper column material 52U and a pin hole 212. The drift pin 106 is located above the upper end portion 252 of the second steel plate portion 250 and the rubber material 220.

[0051] 6, in this embodiment, there are two pin holes 212 and two drift pins 106, but this is not limiting. Also, as shown in FIG. 5, the overall length of the drift pin 106 is the same as or approximately the same as the length of the load support part 40, and both ends of the through hole (not shown) in the fire-resistant layer 46 are blocked with a filler, a wooden plug, or the like.

[0052] Furthermore, rock wool or the like may be filled into the space 209 above the upper end portion 252 of the second steel plate portion 250 between the first steel plate portions 210 .

[0053] [Effect] Next, the operation of this embodiment will be described.

[0054] As shown in FIGS. 1 and 8(A) to 8(C), during an earthquake, a tensile force K acts on the wooden column 50 due to an earthquake force S (see FIG. 1).

[0055] 8(B), even if the wooden post 50 is tensilely deformed by the tensile force K, the rubber material 220 between the first steel plate portion 210 and the second steel plate portion 250 undergoes shear deformation, and the drift pin 106 does not undergo bending deformation. Note that the shear rigidity of the rubber material 220 is smaller than the rigidity of the drift pin 106.

[0056] As shown in Figure 8(C), when the excessive tensile deformation of the wooden column 50 becomes large, the rubber material 220 exceeds a predetermined shear deformation amount, the rubber material 220 begins to harden, and the shear rigidity becomes large and exceeds the rigidity of the drift pin 106, and the drift pin 106 begins to bend.

[0057] As described above, in the joint structure 202 of this embodiment, the drift pin 106 does not begin to bend until the rubber material 220 begins to harden and the shear rigidity exceeds the rigidity of the drift pin 106. Therefore, compared to the joint structure 502 of the comparative example described above, when the tensile deformation of the wooden column 50 is the same, the bending deformation of the drift pin 106 is smaller. Therefore, as shown in FIG. 8(C), it is possible to prevent or suppress breakage of the drift pin 106 when excessive tensile deformation occurs in the wooden column 50.

[0058] In addition, the amount of shear deformation at which hardening begins and the shear rigidity exceeds the rigidity of the drift pin 106, that is, the amount of tensile deformation of the wooden column 50 at which the drift pin 106 begins to bend, is set to be less than the amount of tensile deformation of the wooden column 50 at the time of initial design or at the time of inherent strength.

[0059] Third Embodiment A joint structure according to a third embodiment of the present invention will now be described.

[0060] The same components as those in the first and second embodiments are designated by the same reference numerals, and redundant explanations will be omitted or simplified. Also, the general structure of a building to which the joint structure of the third embodiment is applied is the same as that of the first and second embodiments, and therefore explanations will be omitted.

[0061] [Connection structure] The joint structure of this embodiment will be described.

[0062] 9 and 10, the joint structure 302 is configured to include a steel frame 110, two first steel plate portions 210, a second steel plate portion 350, and a drift pin 106. The second steel plate portion 350 is joined to the base plate 121 of the upper base plate portion 120 of the steel frame 110.

[0063] The two first steel plate portions 210 are inserted into and embedded in notches (not shown) formed in the load support portion 40 of the upper pillar material 52U. Two pin holes 212 are formed in each of the first steel plate portions 210. The pin holes 212 are perfect circles or nearly perfect circles.

[0064] The second steel plate portion 350, which is joined to the upper base plate 121 and protrudes upward, is inserted between the two first steel plate portions 210. An upper end portion 352 of the second steel plate portion 350 is located above the pin hole 212.

[0065] An insertion hole 354 is formed in the upper part of the second steel plate portion 350 at a position that overlaps with the pin hole 212 when viewed from the Y direction. The insertion hole 354 is an elongated hole with the vertical direction as the longitudinal direction. The elongated insertion hole 354 is formed so that its lower end is at the same height as the pin hole 212 or slightly lower than the pin hole 212.

[0066] Further, a rubber material 220 is joined to the inner surface of the first steel plate portion 210 and the outer surface of the second steel plate portion 350 below the pin hole 212 and the insertion hole 354 .

[0067] The drift pin 106 is inserted into a through-hole (not shown) formed in the upper column member 52U in the horizontal direction, the pin hole 212, and the insertion hole 354. The drift pin 106 is located above the rubber member 220.

[0068] 10, in this embodiment, there are two pin holes 212, two insertion holes 354, and two drift pins 106, but the number is not limited to this. Also, as shown in FIG. 9, the overall length of the drift pin 106 is the same as or approximately the same as the length of the load support part 40, and both ends of the through hole (not shown) of the fire-resistant layer 46 are blocked with filler, wooden plugs, or the like.

[0069] [Effect] Next, the operation of this embodiment will be described.

[0070] As shown in FIGS. 1 and 11(A) to 11(C), during an earthquake, a tensile force K acts on the wooden column 50 due to a seismic force S (see FIG. 1).

[0071] 11(B), even if the wooden post 50 is tensilely deformed by the tensile force K, the rubber material 220 between the first steel plate portion 210 and the second steel plate portion 250 undergoes shear deformation, and the drift pin 106 does not undergo bending deformation. Note that the shear rigidity of the rubber material 220 is smaller than the rigidity of the drift pin 106.

[0072] Next, we will explain two cases: a first case in which the drift pin 106 hits the upper end of the insertion hole 552 before the rubber material 220 begins to harden and its shear stiffness exceeds the stiffness of the drift pin 106; and a second case in which the drift pin 106 hits the upper end of the insertion hole 552 after the rubber material 220 begins to harden and its shear stiffness exceeds the stiffness of the drift pin 106.

[0073] In the first case, as shown in FIG. 11(C), excessive tensile deformation occurs in the wooden post 50, and when the drift pin 106 hits the upper end of the insertion hole 152, bending deformation begins.

[0074] In the second case, as shown in Figure 11(C), excessive tensile deformation occurs in the wooden column 50, the rubber material 220 begins to harden, the shear rigidity increases, and when this exceeds the rigidity of the drift pin 106, the drift pin 106 begins to bend.

[0075] Thus, in both the first and second cases, when the tensile deformation of the wooden column 50 is the same, the bending deformation of the drift pin 106 is smaller than that of the joint structure 502 of the comparative example described above. Therefore, as shown in Figure 8(C), breakage of the drift pin 106 when excessive tensile deformation occurs in the wooden column 50 can be prevented or suppressed.

[0076] This also prevents breakage due to excessive deformation of the rubber material 20. The insertion holes 552 also function as a fail-safe in the event that the rubber material 220 melts due to a fire.

[0077] <Modification> Next, a modified joint structure of this embodiment will be described.

[0078] In a modified joint structure 305 shown in Fig. 14, a plate-shaped shock absorbing material 310 is provided on the upper surface of the base plate 121 of the upper base plate portion 120. In this embodiment, the shock absorbing material 310 is made of a rubber plate, but is not limited to this.

[0079] As shown in FIG. 15(A), the base plate 121 and the plate-shaped impact absorbing material 310 are housed in a recess 60 (see also FIG. 14) formed in the lower end of the load supporting portion 40 of the pillar 52U.

[0080] The depth of the recess 60 is smaller than the combined thickness of the base plate 121 and the plate-shaped impact absorbing material 310. Therefore, in the state of Figure 15(A), the plate-shaped impact absorbing material 310 is elastically deformed and compressed.

[0081] As shown in FIG. 15(B), when the wooden pole 50 is tensilely deformed by the tensile force K, the bottom of the recess 60 separates from the shock absorbing material 310.

[0082] As shown in FIG. 15(C), when the tensile deformation of the wooden pole 50 returns to normal as indicated by arrow J, the bottom of the recess 60 hits the shock absorbing material 310, absorbing the shock.

[0083] <Other> The present invention is not limited to the above embodiment.

[0084] For example, although the joint 100 in the above embodiment is made of steel-reinforced concrete, the present invention is not limited to this. The joint may be made of steel-reinforced concrete or steel.

[0085] Furthermore, the plate-shaped shock absorbing material 310 of the modified example of the third embodiment may be applied to the joint structure 102 of the first embodiment and the joint structure 202 of the second embodiment.

[0086] Furthermore, for example, in the above embodiment, the deformation and deformation amount of the drift pin 106 are bending deformation and bending deformation amount, but are not limited to this, and may be shear deformation and shear deformation amount.

[0087] Furthermore, the present invention can be embodied in various forms without departing from the spirit and scope of the present invention. A plurality of embodiments and modifications can be implemented in combination as appropriate. [Explanation of symbols]

[0088] 10 Building 30 Steel beams 50 Wooden Pillar 52U pillar material (upper pillar material) 100 Joint 102 Connection structure 106 Drift Pin 110 Steel Frame 150 Steel plate section 152 Insertion hole (long hole) 202 Connection structure 210 First Steel Plate Department 212 pinhole 220 Rubber 250 Second steel plate section 252 Upper end 302 Connection structure 350 Second steel plate section 352 Upper end 354 Insertion hole (long hole)

Claims

1. Steel frames are installed at the joints between the wooden columns and beams; A steel plate portion protruding upward from the steel frame material and inserted into an upper column material constituting the upper side of the joint portion of the wooden column, with a long hole formed therein whose longitudinal direction is in the vertical direction; A drift pin that penetrates from the side surface of the upper column member and is inserted into the elongated hole of the steel plate portion; It has a joint structure.

2. Steel frames are installed at the joints between the wooden columns and beams; A pair of first steel plate portions inserted at intervals in the column width direction into the upper column material constituting the upper side of the joint portion in the wooden column and having pin holes formed at the top; A second steel plate portion protruding upward from the steel frame and inserted between the pair of first steel plate portions; a rubber material joined to an inner surface of the first steel plate portion and an outer surface of the second steel plate portion below the pin hole; a drift pin that penetrates from the side surface of the upper pillar material and is inserted into the pin hole of the first steel plate portion above the rubber material and above the upper end of the second steel plate portion; It has a joint structure.

3. Steel frames are installed at the joints between the wooden columns and beams; A pair of first steel plate portions inserted at intervals in the column width direction into the upper column material constituting the upper side of the joint portion in the wooden column and having pin holes formed at the top; A second steel plate portion protruding upward from the steel frame material, inserted between the pair of first steel plate portions, and having a long hole formed therein with the vertical direction as the longitudinal direction; a rubber material joined to the inner surface of the first steel plate portion and the outer surface of the second steel plate portion below the pin hole and the long hole; A drift pin that penetrates from the side surface of the upper column material and is inserted into the pin hole of the first steel plate portion and the long hole of the second steel plate portion; It has a joint structure.

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