Joint structure and construction method thereof

Abstract

To provide a joining structure for increasing the structural strength at an intersection of axial members on which an axial force due to the weight of the structure acts, and a method for constructing the joining structure.SOLUTION: There is provided a joining structure that constitutes a structure 10 and joins the axial members that bear the axial force due to the weight of the structure 10. A first wooden structural member 111 has a first axial member which is a wooden axial force bearing member along the first axial direction X1 intersecting the vertical direction. A second wooden structural member 112 has a second axial member which is a wooden axial force bearing member along the second axial direction X2 intersecting the first axial direction X1. A PC structural member 12 has a joining material which is a cement composition for joining the first axial material and the second axial material.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a joint structure and a method for constructing the joint structure. [Background technology]

[0002] As a joint structure for wooden shaft members that bears the axial force due to the self-weight of a structure, for example, a joint structure as shown in Patent Document 1 is known. In Patent Document 1, one shaft member is used as a through member, and the other shaft member is connected to the one shaft member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-141560 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the joint structure of Patent Document 1, it is difficult to make the structural strength at the intersection of the shaft members greater than the strength of the shaft members. [Means for solving the problem]

[0005] The joining structure that solves the above-mentioned problems is a joining structure that joins axial members that constitute a structure and bear the axial force due to the structure's own weight, and has a first axial member that is a wooden axial force bearing member along a first axial direction that intersects the vertical and horizontal directions, a second axial member that is a wooden axial force bearing member along a second axial direction that intersects the first axial direction, and a joining material that is a cement composition that joins the first axial member and the second axial member.

[0006] A construction method for a joint structure that solves the above-mentioned problems is a construction method for a joint structure that joins axial members that constitute a structure and bear the axial force due to the structure's own weight, in which a first axial member, which is a wooden axial force bearing member, is arranged along a first axial direction that intersects the vertical and horizontal directions, and a second axial member, which is a wooden axial force bearing member, is arranged along a second axial direction that intersects the first axial direction, and the first axial member and the second axial member are joined with a joining material that is a cement composition.

[0007] According to the above configuration, the structural strength at the intersection between the first shaft member and the second shaft member can be made greater than that of the first shaft member and the second shaft member. In the above configuration, the second axis direction is preferably a direction intersecting the vertical direction and the horizontal direction, whereby both the first axis direction and the second axis direction can be directions intersecting the vertical direction and the horizontal direction.

[0008] In the above configuration, it is preferable that the angle of the first axis direction with respect to the vertical direction is equal to the angle of the second axis direction with respect to the vertical direction, thereby making the structure of the bonding material symmetrical.

[0009] In the above configuration, it is preferable that the cross-sectional shape of the first shaft member and the cross-sectional shape of the second shaft member are equal to each other, thereby simplifying the structure of the joining material. In the above-described configuration, it is preferable that the structural surface including the first axis direction and the second axis direction is a vertical structural surface, which can reduce the space required for the joint structure.

[0010] In the above-mentioned configuration, the joint material is preferably a precast material, which improves the workability of the joint structure and therefore the workability of the structure. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing a portion of a structure constructed using one embodiment of a joining structure. [Diagram 2]FIG. 2 is an exploded perspective view of an embodiment of a joining structure. [Diagram 3] FIG. 4 is a partial cross-sectional view showing an example of a connection portion between a wooden structural member and a PC structural member. [Figure 4] FIG. 13 is a perspective view showing an example of a process for placing a PC structural member. [Diagram 5] FIG. 11 is a perspective view illustrating an example of a process for inserting a first rod-shaped material. [Figure 6] FIG. 4 is a perspective view showing an example of a state in which a first rod-shaped material is inserted. [Figure 7] FIG. 13 is a perspective view showing a schematic example of a process for connecting a wooden structural member to a PC structural member. [Figure 8] FIG. 13 is a front view showing an example of a shape of a bonding material in a modified example. [Figure 9] FIG. 13 is a front view showing an example of a shape of a bonding material in a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] An embodiment of a joint structure and a method for constructing the joint structure will be described with reference to Figs. 1 to 7. As shown in Fig. 1, the structure 10 is constructed by sequentially connecting a first wooden structural member 111 extending in a first axial direction X1 and a second wooden structural member 112 extending in a second axial direction X2 via a PC structural member 12 that forms a joint. The PC structural member 12 is made of precast concrete.

[0013] The first axis direction X1 is a direction that intersects with the vertical direction Z and the horizontal direction Y. The second axis direction X2 is a direction that intersects with the first axis direction X1 as well as with the vertical direction Z and the horizontal direction Y. A structural plane including the first axis direction X1 and the second axis direction X2 is a vertical structural plane. The first axis direction X1 and the second axis direction X2 are directions that include a vertical component, and are directions in which axial forces due to the weight of the structure 10 and the weight of an object supported by the structure 10 act.

[0014] A first angle θ1 that the first axis direction X1 makes with respect to the vertical direction Z and a second angle θ2 that the second axis direction X2 makes with respect to the vertical direction Z may be the same or different. In this embodiment, the first angle θ1 and the second angle θ2 are set to 45°.

[0015] In a structure 10, a first wooden structural member 111 and a second wooden structural member 112 connected via a PC structural member 12 as shown in FIG. 1 may be arranged on each floor of the structure 10 or may be arranged across multiple floors.

[0016] As shown in FIG. 2, the first wooden structural member 111 is connected to the PC structural member 12 via a plurality of first rods 13. The second wooden structural member 112 is connected to the PC structural member 12 via a plurality of second rods 14. The first wooden structural member 111 has a wood-side connection hole 15 in which the first rods 13 are arranged. The second wooden structural member 112 has a wood-side connection hole 15 in which the second rods 14 are arranged. The PC structural member 12 has a joint-side connection hole 16 in which the first rods 13 are arranged. The second rods 14 are fixed to the PC structural member 12.

[0017] The first wooden structural member 111 and the second wooden structural member 112 have the same basic structure. In the following description, the first wooden structural member 111 and the second wooden structural member 112 will both be referred to as wooden structural member 11.

[0018] As shown in FIG. 3, the wooden structural member 11 has a shaft member 21, a fireproof material 22, and a wooden structural member finishing material . The shaft member 21 is a wooden axial force bearing member that bears the axial force acting on the wooden structural member 11. The shaft member 21 has sufficient strength to withstand the axial force. The shaft member 21 is formed so that the wood fiber direction is along the longitudinal axis of the shaft member 21. In this embodiment, the cross-sectional shape of the shaft member 21 of the first wooden structural member 111 and the cross-sectional shape of the shaft member 21 of the second wooden structural member 112 are the same.

[0019] The shaft end surface 24 is a plane perpendicular to the first axial direction X1 or the second axial direction X2. The above-mentioned multiple wood-side connection holes 15 are opened in the shaft end surface 24. Each wood-side connection hole 15 extends along the longitudinal axis of the shaft 21. The wood-side connection hole 15 has a shape that forms a gap on the order of millimeters between the first rod-shaped material 13 or the second rod-shaped material 14.

[0020] The fireproof material 22 covers the shaft 21 from the outside and is provided so as to protrude from the outer edge of the shaft end surface 24 at the end of the wooden structural member 11. In this embodiment, the fireproof material 22 is composed of three fireproof layers 26. Each fireproof layer 26 is composed of a plurality of board materials that are lightweight and have excellent fire resistance, such as gypsum board. Each board material is fixed to the shaft 21 and the inner board material by fasteners such as staples not shown. The joints 27 of the board materials in each fireproof layer 26 are provided at positions that do not overlap with the joints 27 of other fireproof layers 26 located on the inside or outside. This makes the shaft 21 less susceptible to the effect of heat in the event of a fire, thereby improving the fire resistance of the wooden structural member 11. The fireproof material end surface 28, which is the end surface of the fireproof material 22, is configured so that the end surfaces of the fireproof layers 26 are flush with each other. The fireproof material end surface 28 is located closer to the PC structural member 12 than the shaft end surface 24.

[0021] The wooden structural member finishing material 23 covers the fire-resistant material 22 from the outside. A wooden structural member finished end face 30, which is an end face of the wooden structural member finishing material 23, is disposed in a position flush with the fire-resistant material end face 28. The wooden structural member finishing material 23 gives the wooden structural member 11 a wood-like appearance and also functions as a substitute layer in the event of a fire. The wooden structural member finishing material 23 is fixed to the fire-resistant material 22 with screws (not shown) or the like.

[0022] The PC structural member 12 has a joint material 31 and a PC structural member finishing material 32. The joint material 31 has a generally cubic joint material body 33. The joint material body 33 is formed of a cement composition having a higher strength than the shaft material 21 of the wooden structural member 11. The joint material body 33 has a connection surface 34 to which the wooden structural member 11 is connected and a non-connection surface 35 to which the wooden structural member 11 is not connected.

[0023] The connection surface 34 to which the first wooden structural member 111 is connected is a plane that includes a vertical component in its normal direction. The connection surface 34 is a plane perpendicular to the first axial direction X1. The connection surface 34 is an axial force bearing surface that bears the axial force in the first axial direction X1. A joint side connection hole 16 in which the first rod 13 is disposed is opened in the connection surface 34. The joint side connection hole 16 is formed to extend along the first axial direction X1.

[0024] The connection surface 34 to which the second wooden structural member 112 is connected is a plane that includes a vertical component in its normal direction. The connection surface 34 is a plane that is perpendicular to the second axial direction X2. The connection surface 34 is an axial force bearing surface that bears the axial force in the second axial direction X2. The second rod 14 extends outward from the connection surface 34. The second rod 14 is fixed so as to be aligned along the second axial direction X2.

[0025] Each connection surface 34 is disposed opposite to the shaft end surface 24 and the fireproof material end surface 28 of the wooden structural member 11. The connecting material 31 is formed so that the joint side connection hole 16 and the second rod-shaped material 14 do not intersect inside the connecting material body 33.

[0026] In the joining material 31, when the first angle θ1 and the second angle θ2 are 45°, the angle formed by the connection surface 34 to which the first wooden structural member 111 is connected and the connection surface 34 to which the second wooden structural member 112 is connected is 90°.

[0027] The rods 13, 14 are made of materials stronger than the shaft 21 of the wooden structural member 11, such as deformed rebars, fully threaded bolts, or fiberglass bars. The lengths of the rods 13, 14 are determined so that, when inserted to the deepest part of the wood-side connection hole 15, an inner space 37, which is a gap of about 10 mm, can be formed between the connection surface 34 and the end surface 28 of the fireproof material.

[0028] The non-connecting surface 35 is a surface that becomes a side surface of the PC core material 31 and is a surface to which the PC structural member finishing material 32 is attached. A finishing material recess 38 is formed in the center of the non-connecting surface 35. A plurality of plate materials 39 are arranged in the finishing material recess 38. The plate materials 39 are fixed to the PC core material 31 or the plate materials 39 located on the inside by screws (not shown). The plate material 39 in contact with the PC core material 31 is wood that adjusts the position of the outer surface of the PC structural member finishing material 32 so that the outer surface of the PC structural member finishing material 32 and the outer surface of the wooden structural member finishing material 23 are flush with each other. The plate material 39 in contact with the PC structural member finishing material 32 is wood to which the PC structural member finishing material 32 is fixed. The PC structural member finishing material 32 is fixed to the plate material 39 in contact with the PC structural member finishing material 32 by screws (not shown). The PC structural member finishing material 32 covers the entire non-connecting surface 35. The PC structural member finishing material 32 gives the PC structural member 12 a wood-like appearance. In this embodiment, the PC structural member finished end face 40, which is the end face of the PC structural member finishing material 32, is a PC structural member end face. The gap between the PC structural member finished end face 40 and the wooden structural member finished end face 30 is a joint space 41. Note that the PC structural member 12 may have a configuration in which the non-connecting surface 35 is flat and the PC structural member finishing material 32 is fixed to the non-connecting surface 35.

[0029] The shaft 21 of the wooden structural member 11 and the joint material 31 of the PC structural member 12 are connected by a cement-based filler 45 disposed between the connection surface 34 and the shaft end surface 24. The cement-based filler 45 is formed by hardening cement (e.g., mortar) injected to cover the periphery of the first rod-shaped member 13 or the second rod-shaped member 14.

[0030] In the inner space 37 between the connection surface 34 and the end surface 28 of the fireproof material, a fireproof filler 46 is disposed so as to cover the cement-based filler 45 from the outside. The fireproof filler 46 is made of, for example, rock wool or a fireproof sheet. In addition, in the inner space 37, a backup material 47 is disposed so as to cover the fireproof filler 46 from the outside, and a fireproof seal 48 is disposed so as to cover the backup material 47 from the outside. The fireproof seal 48 is disposed between the fireproof filler 46 and the joint space 41. Each member disposed in the inner space 37 is made of a deformable material having excellent fire resistance. Each member suppresses the thermal effect on the shaft member 21 through the joint space 41 and the inner space 37 during a fire, and functions as a buffer material between the wooden structural member 11 and the PC structural member 12 during an earthquake or the like. In addition, an elastic member such as rubber may be arranged in the joint space 41 to prevent the fireproof filling material 46, the fireproof seal 48, etc. from coming out of the inner space 37.

[0031] (Structural construction method) The structure 10 is constructed by sequentially connecting wooden structural members 11 via PC structural members 12. The wooden structural members 11 are delivered to the construction site with fireproofing material 22 and wooden structural member finishing material 23 attached to the axis material 21 in a factory or the like. The PC structural members 12 are delivered to the construction site with PC structural member finishing material 32 attached to the joint material 31.

[0032] 4, first, a first wooden structural member 111a and a second wooden structural member 112a are installed at predetermined installation positions on the foundation of the structure 10. At this time, the first wooden structural member 111a is installed so that its angle with respect to the vertical direction Z is a first angle θ1. Moreover, the second wooden structural member 112a is installed so that its angle with respect to the vertical direction Z is a second angle θ2.

[0033] Next, after aligning the wood side connection hole 15 of the second wooden structural member 112a with the second rod-shaped member 14 of the PC structural member 12a (alignment process), the PC structural member 12a is brought close to the second wooden structural member 112a and the second rod-shaped member 14 is inserted into the wood side connection hole 15 (rod-shaped member insertion process).

[0034] Next, as shown in Figure 5, after aligning the wood side connection hole 15 of the first wooden structural member 111a with the joint side connection hole 16 of the PC structural member 12a (alignment process), the first rod-shaped material 13 is inserted diagonally from above into the joint side connection hole 16 and the wood side connection hole 15 (rod-shaped material insertion process).

[0035] Next, as shown in FIG. 6, the PC structural member 12a is arranged so that an inner space 37 and a joint space 41 are formed between each of the first wooden structural member 111a and the second wooden structural member 112a and the PC structural member 12a (joint space forming process). Then, as shown by the arrows, cement is injected between the shaft end surface 24 and the connection surface 34 of the joint material 31 through the inner space 37 and the joint space 41, and hardened to form a cement-based filler 45 (cement-based filler forming process). At this time, a part of the cement flows into the wood-side connection hole 15 and the joint-side connection hole 16 and hardens. The cement-based filler forming process is performed for each of the first wooden structural member 111a and the second wooden structural member 112a. The cement-based filler forming process may be performed sequentially or simultaneously. When the step of forming the cement-based filler on both wooden structural members is completed, the shaft 21 of the first wooden structural member 111a and the shaft 21 of the second wooden structural member 112a are joined together with the joining material 31 therebetween.

[0036] After forming the cement-based filler 45, rock wool, a fireproof sheet, or the like is placed in the inner space 37 to form a fireproof filler 46 so as to cover the cement-based filler 45 (fireproof filler forming process). Then, a backup material 47 is placed to cover the fireproof filler 46, and a fireproof seal 48 is formed to cover the backup material 47 from the outside (fireproof seal forming process). The fireproof filler forming hole and fireproof seal forming processes are performed for each of the first wooden structural member 111a and the second wooden structural member 112a. In this way, the first wooden structural member 111a and the second wooden structural member 112a are connected via the PC structural member 12a.

[0037] Next, as shown in Fig. 7, the first wooden structural member 111b is connected to the PC structural member 12a. In this case, after the position of the first wooden structural member 111b is adjusted relative to the PC structural member 12a in a positioning step, the first wooden structural member 111b is brought close to the PC structural member 12a in a rod-shaped member insertion step, and the first rod-shaped member 13 is inserted into the wood-side connection hole 15. Then, the first wooden structural member 111b is connected to the PC structural member 12a through a cement-based filler forming step, a fireproof filler forming step, and a fireproof seal forming step.

[0038] Next, the second wooden structural member 112b is connected to the PC structural member 12a. In this case, the position of the second wooden structural member 112b is adjusted relative to the PC structural member 12a in the positioning step, and then the second wooden structural member 112b is brought close to the PC structural member 12a in the bar-shaped member insertion step, and the second bar-shaped member 14 is inserted into the wood-side connection hole 15. Then, the second wooden structural member 112b is connected to the PC structural member 12a through the cement-based filler forming step, the fireproof filler forming step, and the fireproof seal forming step. In this way, when the first wooden structural members 111a, 111b and the second wooden structural members 112a, 112b are connected to the PC structural member 12a, the state shown in FIG. 1 is obtained.

[0039] The first wooden structural member 111b and the second wooden structural member 112b may be connected to the PC structural member 12a either first or at the same time. In either case, when the cement-based filler forming process is completed for each of the first wooden structural member 111b and the second wooden structural member 112b, the shaft 21 of the first wooden structural member 111b and the shaft 21 of the second wooden structural member 112b are joined via the joining material 31. Thereafter, the various processes described above are repeated to sequentially connect the first wooden structural member 111, the second wooden structural member 112, and the PC structural member 12, thereby constructing the structure 10.

[0040] The effects of this embodiment will be described. (1) In the above-described joint structure, the strength of the joint material 31 disposed at the intersection between the shaft material 21 of the first wooden structural member 111 and the shaft material 21 of the second wooden structural member 112 is greater than the strength of each shaft material 21. This makes it possible to make the structural strength at the intersection greater than the strength of the shaft material 21. In addition, the efficiency of transmission of axial force via the joint material 31 is also improved.

[0041] (2) Since the first angle θ1 and the second angle θ2 are the same, the structure of the joint material 31 can be made symmetrical. As a result, the workability of the joint structure can be improved. (3) Since the shafts 21 of the first wooden structural member 111 and the shafts 21 of the second wooden structural members 112 have the same cross-sectional shape, the structure of the joining members 31 can be simplified.

[0042] (4) The structural plane including the first axis direction X1 and the second axis direction X2 is a vertical structural plane. This allows the shaft members 21 of the first wooden structural member 111, the shaft members 21 of the second wooden structural member 112, and the connecting members 31 to be arranged in the same vertical structural plane, thereby saving space in the connecting structure. In addition, stress can be transmitted via the connecting members 31 without eccentricity.

[0043] (5) The joint material 31 is made of precast concrete. This simplifies the work involved in the joint material 31 at the construction site, improving the ease of construction of the joint structure and therefore the ease of construction of the structure 10.

[0044] (6) Since the axial force due to the weight of the structure 10 mainly acts on the shaft end surface 24 of the shaft 21 and the connection surface 34 of the bonding material 31, the shaft end surface 24 and the connection surface 34 can be made flat. This simplifies the structure of the shaft 21 and the bonding material 31.

[0045] (7) The fireproof filler 46 is disposed in the inner space 37 between the cementitious filler 45 and the joint space 41. This makes it difficult for the shaft 21 to be affected by heat through the inner space 37 in the event of a fire. As a result, the fireproof performance of the connection between the wooden structural member 11 and the PC structural member 12 can be more reliably ensured.

[0046] (8) The fireproof filler 46 is disposed in the inner space 37 between the fireproof end surface 28 of the wooden structural member 11 and the connection surface 34 of the PC structural member 12. This effectively reduces the thermal effect on the shaft 21 in the event of a fire. As a result, the fireproof performance of the connection portion can be improved.

[0047] (9) A fire-resistant seal 48 is provided between the fire-resistant filler 46 and the joint space 41. This makes it possible to more effectively suppress the thermal effects on the shaft member 21 during a fire. As a result, the fire resistance of the connection portion can be further improved.

[0048] (10) The fireproof material end face 28 is disposed closer to the PC structural member 12 than the shaft end face 24. This allows the shaft end face 24 to be disposed in a more recessed location, further improving the fire resistance of the connection. In addition, the amount of materials such as rock wool and fireproof sheets required to form the fireproof filling material 46 can be reduced.

[0049] This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that they are not technically inconsistent. The second axis direction X2 may be a vertical direction. In this case, it is preferable that the first wooden structural member 111 is joined to the joining material 31 via the second rod 14 fixed to the joining material 31, and the second wooden structural member 112 is joined to the joining material 31 via the first rod 13.

[0050] The joint material 31 may be prepared by setting a form at the intersection of the shaft 21 of the first wooden structural member 111 and the shaft 21 of the second wooden structural member 112 at the construction site, pouring cement into the form, and allowing it to harden. In this case, the rod-shaped material protruding from the end face 24 of the shaft is fixed to the shaft 21.

[0051] The first axis direction X1 and the second axis direction X2 may be inclined with respect to the vertical direction as long as they include a vertical component. The cross-sectional shape of the shaft 21 of the first wooden structural member 111 may be different from the cross-sectional shape of the shaft 21 of the second wooden structural member 112 .

[0052] Either the fireproof filler 46 or the fireproof seal 48 may be disposed between the cement-based filler 45 and the joint space 41. In addition, it is not necessary to dispose both the fireproof filler 46 and the fireproof seal 48.

[0053] The fireproof filler 46 may be disposed not only in the inner space 37 but also in the joint space 41 . The wooden structural member 11 may be constructed on-site by attaching the fireproof material 22 to the shaft member 21 and attaching the wooden structural member finishing material 23 to the fireproof material 22. In such a configuration, it is preferable that an injection hole for injecting cement is formed in the shaft member 21. The injection hole communicates with the wood-side connection hole 15 at the innermost part. This makes it possible to more reliably inject cement around the rod-shaped members 13, 14 in the wood-side connection hole 15.

[0054] The PC structural member 12 may be constructed by assembling the PC structural member finishing material 32 to the joining material 31 at the construction site. At least one of the shaft end surface 24 of the shaft 21 and the connection surface 34 of the joint material 31 may be an uneven surface. With this configuration, the efficiency of transmission of forces other than the axial force via the joint material 31 can be improved.

[0055] The shape of the bonding material 31 can be changed depending on the first angle θ1 and the second angle θ2. For example, as shown in Fig. 8, when the first angle θ1 and the second angle θ2 are equal and are an angle other than 45°, the shape of the joining material 31 may be a rectangular prism with a diamond-shaped bottom. In the case shown in Fig. 8, the corners 50 protruding between the adjacent shaft members 21 may be cut out. Note that when the first angle θ1 and the second angle θ2 are an angle other than 45°, the angle formed between the connection surface 34 to which the first wooden structural member 111 is connected and the connection surface 34 to which the second wooden structural member 112 is connected includes an obtuse angle.

[0056] 9, the bonding material 31 may be in the shape of a hexagonal column. This makes it easy to make the connection surface 34 of the bonding material 31 and the shaft end surface 24 of the shaft material 21 perpendicular to the first axial direction X1 or the second axial direction X2 when the first angle θ1 and the second angle θ2 are other than 45°. This makes it possible to increase the efficiency of transmission of the axial force via the bonding material 31. [Explanation of symbols]

[0057] 10...Structural body, 11...Wooden structural member, 111, 111a, 111b...First wooden structural member, 112, 112a, 112b...Second wooden structural member, 12, 12a...PC structural member, 13...First rod-shaped member, 14...Second rod-shaped member, 15...Wood side connection hole, 16...Joint side connection hole, 21...Axis member, 22...Fireproof material, 23...Wooden structural member finishing material, 24...Axis member end surface, 26...Fireproof layer, 27...Joint, 28...fire-resistant material end surface, 30...finished end surface of wooden structural member, 31...joint material, 32...finishing material of PC structural member, 33...joint material body, 34...connecting surface, 35...non-connecting surface, 37...inner space, 38...recess in finishing material, 39...board material, 40...finished end surface of PC structural member, 41...joint space, 45...cementitious filler, 46...fire-resistant filler, 47...back-up material, 48...fire-resistant seal, 50...corner.

Claims

1. A joining structure for joining shaft members that constitute a structure and bear an axial force due to the weight of the structure, A first axis member is a wooden axial load bearing member along a first axis direction intersecting the vertical direction and the horizontal direction; A second shaft member which is a wooden axial load bearing member along a second axial direction intersecting the first axial direction; A bonding material which is a cement composition that bonds the first shaft member and the second shaft member, The first shaft member is connected to the joining material via a plurality of first rod-shaped members, The second shaft member is connected to the joining member via a plurality of second rod-shaped members. Joint structure.

2. The second axis direction is a direction intersecting the vertical direction and the horizontal direction. The joint structure according to claim 1 .

3. The angle of the first axis direction with respect to the vertical direction is equal to the angle of the second axis direction with respect to the vertical direction. The joint structure according to claim 2 .

4. The cross-sectional shape of the first shaft member and the cross-sectional shape of the second shaft member are equal. The joint structure according to any one of claims 1 to 3.

5. The structural plane including the first axis direction and the second axis direction is a vertical structural plane. The joint structure according to any one of claims 1 to 4.

6. The joining material is a precast material. The joint structure according to any one of claims 1 to 5.

7. A construction method for a joint structure for joining a shaft member that constitutes a structure and bears an axial force due to the weight of the structure, comprising: A first shaft member, which is a wooden axial load bearing member, is arranged along a first axial direction intersecting the vertical direction and the horizontal direction, and a second shaft member, which is a wooden axial load bearing member, is arranged along a second axial direction intersecting the first axial direction, and the first shaft member and the second shaft member are joined with a joining material that is a cement composition; The first shaft member is connected to the joining material via a plurality of first rod-shaped members, The second shaft member is connected to the joining member via a plurality of second rod-shaped members. Construction method for joint structure.

8. The joining material is a precast material. A method for constructing the joint structure according to claim 7.

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