JP2020090818A - Wooden member joint structure - Google Patents

Abstract

To provide a wooden member joint structure capable of strongly joining CLT with a wooden member.SOLUTION: In a wooden member joint structure 20 joining a CLT 10 with a wooden member 21 using a joint tool 22, the joint tool 22 is a machine screw, a nail, or a bolt, and a joint face JP is formed between an outer peripheral side face 10b in a plate thickness direction of the CLT 10 and the wooden member 21. The joint tool 22 penetrates so as to straddle the joint face JP with an angle with respect to a virtual perpendicular plane OP perpendicular to both of a front/rear face 10a of CLT 10 and the joint face JP.SELECTED DRAWING: Figure 3

Description

The present invention relates to a wooden member joint structure including a joint between a CLT and a wooden member.

2. Description of the Related Art Conventionally, when constructing a wooden building, it has been practiced to join wooden board members to each other or to join the wooden board members to other members such as floors, columns and beams.
For example, Patent Document 1 discloses a method of joining floorboards such as structural plywood to each other through a heat insulating material.

As a wooden plate material, CLT (Cross Laminated Timer) has been widely used in recent years. The CLT is a plate material in which layers (ply), which are called lamina, and which are arranged in a horizontal plane are laminated and adhered so that the fiber directions of the plates are orthogonal to each other. CLT supports a building as a structural frame and can be expected to have various effects such as heat insulation, flame insulation, heat insulation, and sound insulation.
For example, Patent Document 2 discloses that plies and lamina are arranged in a staggered manner to provide unevenness on the side surface of the CLT, and the CLTs are joined by fitting the unevenness.
The CLT of Patent Document 2 has a complicated structure in which the CLTs are joined by fitting the concavities and convexities provided on the side surfaces, and therefore high precision is required to form the concavities and convexities. If it is attempted to simply and firmly join the plate members to each other without depending on such a structure, for example, as will be described below with reference to FIG. Generally, nails, screws, etc. are diagonally driven from the direction orthogonal to the joining surface to join the plate members together.

FIG. 14(b) is a plan view of a conventional joining structure in which plate materials are obliquely punched from an orthogonal direction. 14A is a side view when viewed from the upper side of the paper surface of FIG. 14B, and FIG. 14C is a side view when viewed from the right side of the paper surface of FIG. 14B. is there.
In the joining structure 100 shown in FIG. 14, the outer peripheral side surfaces 101b of two plate members 101 are brought into contact with each other, and the outer peripheral side surfaces 101b are joined together by screws 102 to form a joint surface 101b. 14A and 14B, the screws 102A embedded from the front and back surfaces 101a of the plate member 101A located on the left side are oblique to the joining surface 101b at an angle with respect to the thickness direction Z of the plate member 101. It is screwed so as to intersect, and the tip 102a is provided so as to be located on the plate member 101B located on the right side. Further, the screws 102B embedded from the front and back surfaces 101a of the plate member 101B located on the right side are screwed obliquely at an angle to the thickness direction Z of the plate member 101 so as to intersect the joint surface 101b, It is provided so that the tip 102a is located on the plate member 101A located on the left side.
Each of the screws 102 is angled with respect to the thickness direction Z from the direction X orthogonal to the joint surface 101b between the members when viewed in plan from the thickness direction Z of the plate material 101 as shown in FIG. 14B. It is attached diagonally. Thereby, as shown in FIGS. 14B and 14C, the screw 102 is positioned in a plane substantially parallel to the plane OP orthogonal to both the front and back surfaces 101a and the joining surface 101b of the plate member 101. It is provided in.
Patent Document 3 discloses a conventional joining structure by oblique driving from an orthogonal direction as shown in FIG.

Especially in areas where earthquakes occur frequently, there is a demand to minimize shear deformation at the joint surface during earthquakes. Therefore, there is a demand for a wood member joining structure that can be joined more firmly than the conventional joining structure by diagonally driving from the orthogonal direction as described above.

JP, 2006-283388, A JP, 2017-119436, A JP, 2001-254462, A

The problem to be solved by the present invention is to provide a wooden member joining structure capable of firmly joining a CLT and a wooden member.

The present inventors, as a wood member joining structure of CLT and a wood member, abutting the outer peripheral side surface of the CLT and the wood member without using a special connecting metal, and then connecting the wire so as to intersect the joining surface. By driving the linear connector three-dimensionally obliquely to the joint surface, when a shearing force is applied to the joint surface, a resistance axial force against shear is generated in the linear joint tool in both tensile and compression directions. For this reason, the present invention has been accomplished by focusing on the point that the shear resistance is increased and the CLT and the wood member can be firmly bonded, as compared with the case of relying only on the shear resistance of the conventional linear connector.
The present invention adopts the following means in order to solve the above problems. That is, the present invention is a wooden member joining structure for joining a CLT and a wooden member using a joining tool, wherein the joining tool is a screw, a nail, or a bolt, and the outer peripheral side surface of the CLT in the plate thickness direction. A joining surface is formed between the joining member and the wood member, and the joining tool forms an angle with respect to an imaginary orthogonal plane orthogonal to both the front and back surfaces of the CLT and the joining surface and straddles the joining surface. Provided is a wood member joining structure characterized by being penetrated.
According to the above-described configuration, the connector that is a screw, a nail, or a bolt has a joint surface between the outer peripheral side surface of the CLT and the wood member, and a virtual orthogonal plane orthogonal to both the front and back surfaces of the CLT. It makes an angle and penetrates across the joint surface. That is, when the CLT is viewed from the thickness direction of the CLT, the joining tool is obliquely inserted at an angle to the direction orthogonal to the joining surface. Therefore, the shearing force at the joint surface is increased by the tensile axial force and the compressive axial force of the connector. Therefore, it is possible to firmly bond the CLT and the wooden member.

In one aspect of the present invention, the joining tool includes a first joining tool and a second joining tool, and the first joining tool and the second joining tool are configured to intersect with each other in the vicinity of the joining surface. It is characterized in that it penetrates the CLT and the wood member.
According to the above configuration, the first connector and the second connector are inserted into the CLT and the wood member so as to intersect each other in the vicinity of the joint surface. For this reason, the tensile force applied by one of the connectors is applied to the other connector by the compression axial force, and the shear resistance along the joint surface can be increased. Therefore, it is possible to firmly bond the CLT and the wooden member.

In another aspect of the present invention, the connector further includes a third connector and a fourth connector, and the first connector and the second connector are both on one side of the virtual orthogonal plane. From the other side of the virtual orthogonal plane to the other side, and the third connecting tool and the fourth connecting tool are both directed from the other side of the virtual orthogonal plane to the one side. And, the CLT and the wood member are penetrated so as to intersect with each other in the vicinity of the joint surface.
According to the above configuration, the first connector and the second connector are both virtual joint planes that are orthogonal to both the joint surface between the CLT and the wood member and the front and back surfaces of the CLT. The third joining tool and the fourth joining tool are inserted into the CLT and the wood member so as to go from the other side to the one side of the virtual orthogonal plane so as to go to the other side sandwiching. That is, in the direction orthogonal to the virtual orthogonal plane, the first connector, the second connector, and the third connector and the fourth connector are provided so as to face each other. Therefore, the in-plane direction component force and the out-of-plane direction component force that may occur in the direction orthogonal to the virtual orthogonal plane are canceled by the combination of the first and second joining tools and the third and fourth joining tools, Separation of the CLT and the wooden member and out-of-plane deformation can be effectively suppressed.
Further, similarly to the first connector and the second connector, the third connector and the fourth connector are inserted into the CLT and the wood member so as to intersect each other in the vicinity of the joint surface. Therefore, the third connector and the fourth connector, like the first connector and the second connector, exert a compressive axial force against the tensile axial force carried by one of the connectors. It is possible to bear and increase the shear resistance along the joint surface.
The above effects are synergistic, and the CLT and the wooden member can be firmly joined.

ADVANTAGE OF THE INVENTION According to this invention, the wooden member joining structure which can join CLT and a wooden member firmly can be provided.

It is a typical perspective view of the building to which the wooden member joining structure in each embodiment of the present invention was applied. It is a perspective view of CLT used in each embodiment of the present invention. It is a partial perspective view of the wooden member joining structure including the joining surface of CLT and the wooden member in the 1st form of the present invention. It is a top view of the wooden member joining structure in 1st Embodiment. It is a side view of the wood member joining structure in a 1st embodiment. It is a list of the test body in the joining part experiment of the wood member joining structure of 1st Embodiment. It is explanatory drawing of the element test body in the joining part experiment of the wood member joining structure of 1st Embodiment. It is explanatory drawing of the experiment apparatus used for the joint part experiment which used the element test body shown in FIG. 9 is a situation photograph of the joint experiment shown in FIG. 8. It is a comparison table of the initial rigidity and the maximum proof stress of each test body obtained by the joint part experiment of the wooden member joint structure. It is a load-relative sliding displacement amount relationship of each test body obtained by the joint part experiment of the wooden member joint structure. It is a top view of the wooden member junction structure regarding 2nd Embodiment of this invention. It is a side view of the wooden member joining structure concerning a 2nd embodiment. It is the top view and side view of the joining structure of the conventional wooden members.

The present invention relates to a method for joining a CLT and a wooden member. After the outer peripheral side surface of the CLT and the wooden member are butted to each other, the joining tool is three-dimensionally oblique to the joining surface so as to intersect the joining surface. It is a driven wooden member joint structure. The first embodiment is a joint structure between CLTs or between CLTs and a floorboard-floorboard by another wooden member. Further, the second embodiment has a joint structure between the CLTs or between the CLT and the wall plate-floor plate made of another wood member.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic perspective view of a building to which a wooden member joining structure is applied in each embodiment described below.
Building 1 is a two-story building. The first floor 1F is formed by providing a CLT wall 3 on a foundation (or a foundation including a floor) 2 made of concrete. The second floor 2F is formed by providing a floor 4 by CLT on the wall 3 constituting the first floor 1F, and further providing the CLT wall 3 thereon.
As the first embodiment, a joint structure when constructing the wall 3 or floor 4 by joining CLTs, or joining CLT and another plate material, which corresponds to a portion shown as an arrow A portion, will be described. Further, as the second embodiment, when the CLT corresponding to the portion shown as the arrow B portion is the wall 3, the CLT is joined to the floor 4, for example, and the CLT is used as another wooden member. The joining structure when joining vertically will be described.

FIG. 2 is a perspective view of the CLT.
A CLT (Cross Laminated Timber, orthogonal laminated plate) 10 forms a layer (ply 12) by arranging a drawing plate called a lamina 11 in a horizontal plane, and laminating the ply 12 so that the fiber directions of the lamina 11 are orthogonal to each other, It is a glued board.
The CLT 10 has two front and back surfaces 10a and 10c each having a side extending in the length direction and a side extending in the width direction as outer contours, and a side extending in the thickness direction (plate thickness direction) as outer contours. It is provided with four outer peripheral side surfaces 10b including.

[First Embodiment]
First, as a first embodiment, a joint structure 20 shown in FIG. 1 as an arrow A portion when the CLTs 10 are joined together or the CLT 10 and another plate member are joined to construct the wall 3 or the floor 4 will be described. .. FIG. 3A is a perspective view of the wooden member joining structure 20 according to the present embodiment, and FIG. 3B is an enlarged view of a portion viewed from an arrow D of FIG. 3A. FIG. 4 is a plan view of FIG. 3B viewed from the direction Z. FIGS. 5A and 5B are side views of FIGS. 3B and 4 viewed from a direction Y and a direction X orthogonal to the direction Z, respectively. Particularly in FIGS. 4 and 5, the connector 22 embedded inside the CLT 10 is also shown by a solid line.
In the wooden member joining structure 20 of the present embodiment, the wooden member 21 to be joined with the CLT 10 is a plate member, which may be, for example, CLT, or may be another kind of wooden member. Similar to the CLT 10, the wooden member 21 has two front and back surfaces 21a whose outer contours are the sides extending in the length direction and the sides extending in the width direction, and the sides extending in the thickness direction are the outer contours. It is provided with four outer peripheral side surfaces 21b.
The joint surface JP between the CLT 10 and the wooden member 21 is formed between any outer peripheral side surface 10b of the CLT 10 and any surface of the wooden member 21, particularly the outer peripheral side surface 21b in the present embodiment. That is, the outer peripheral side surface 10b of the CLT 10 and the outer peripheral side surface 21b of the wooden member 21 are opposed to and abutted against each other, and one front and back surface 10a of the CLT 10 and the front and rear surface 21a of the wooden member 21 form a continuous single plane. The wooden member 21 is provided.

The CLT 10 and the wooden member 21 are joined using a joining tool 22 to construct a wooden member joining structure 20. The connector 22 is a screw, a nail, or a bolt. In particular, in the present embodiment, the connector 22 is a full-screw type screw in which screws are wholly formed on the surface of the shaft portion.
The joining tool 22 includes a first joining tool 22A, a second joining tool 22B, a third joining tool 22C, and a fourth joining tool 22D.
Each of the joining tools 22A, 22B, 22C, and 22D is angled with respect to a virtual orthogonal plane OP that is orthogonal to both the front and back surfaces 10a of the CLT 10 and the joining surface JP, straddles the joining surface JP, and the CLT 10 and the wooden member 21. Have been penetrated by.

When viewed from the width direction Y orthogonal to the virtual orthogonal plane OP (see FIG. 5A), the first connector 22A penetrates the front and back surfaces 10a of the CLT 10 into the CLT 10 and penetrates into the wood member 21. As described above, it is embedded at an angle with respect to the joint surface JP and obliquely embedded. The first joint tool 22A is provided across the joint surface JP. As a result, the first connector 22A is provided such that the head side 22c of the shaft portion 22b is located inside the CLT 10 and the tip end side 22d of the shaft portion 22b is located inside the wood member 21. Specifically, when the joining tool is a screw, the screw is screwed into the CLT 10 and the wooden member 21. Alternatively, when the connector is a nail or bolt, the nail or bolt is embedded in the CLT 10 and the wooden member 21.
The first connector 22A is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, as shown in, for example, FIG. 5B, the first connector 22A forms the virtual orthogonal plane OP from one side OP1 of the virtual orthogonal plane OP on the virtual line AY extending along the width direction Y. It is embedded in an oblique direction so as to be inclined toward the other side OP2 sandwiched with respect to the virtual orthogonal plane OP. As a result, the tip 22e of the first connector 22A is located closer to the other side OP2 than the head 22a, and the head 22a is located closer to one side OP1 than the tip 22e.

The second connector 22B is a first connector with respect to the joint surface JP such that the second connector 22B penetrates the inside of the wood member 21 from the front and back surfaces 21a of the wood member 21 and penetrates into the CLT 10 when viewed from the width direction Y. 22A is inclined at an angle in the opposite direction and is embedded in an oblique direction. The second joint tool 22B is provided across the joint surface JP. As a result, the second connector 22B is provided such that the head side 22c of the shaft portion 22b is located inside the wood member 21 and the tip side 22d of the shaft portion 22b is located inside the CLT 10.
The second connector 22B is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, like the first connector 22A, the second connector 22B is inclined at an angle with respect to the virtual orthogonal plane OP so as to go from the one side OP1 to the other side OP2 on the virtual line AY. , Is buried in a diagonal direction. As a result, the tip 22e of the second connector 22B is located closer to the other side OP2 than the head 22a, and the head 22a is located closer to one side OP1 than the tip 22e.
As shown in FIGS. 3 and 4, the first joint tool 22A and the second joint tool 22B are provided close to each other in the vicinity of the joint surface JP and substantially perpendicularly intersect each other. The first joint tool 22A and the second joint tool 22B are disposed between the head side 22c of the shaft portion 22b of the first joint tool 22A and the head side 22c of the shaft portion 22b of the second joint tool 22B, and A joint surface JP is located between the tip side 22d of the shaft portion 22b of the joint tool 22A and the tip side 22d of the shaft portion 22b of the second joint tool 22B, and is provided so as to sandwich the joint surface JP. ..

When viewed from the width direction Y, the third connector 22C penetrates the inside of the CLT 10 from the front and back surfaces 10a of the CLT 10 and penetrates into the wood member 21 in the same manner as the first connector 22A. It is embedded at an angle with respect to, and is obliquely embedded. The third joint tool 22C is provided across the joint surface JP. Thus, the third connector 22C is provided such that the head side 22c of the shaft portion 22b is located inside the CLT 10 and the tip end side 22d of the shaft portion 22b is located inside the wooden member 21.
The third connector 22C is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, the third connector 22C is inclined at an angle with respect to the virtual orthogonal plane OP so as to go from the other side OP2 to the one side OP1 on the virtual line AY, contrary to the first connector 22A. And is buried diagonally. As a result, the tip 22e of the third connector 22C is located closer to the one side OP1 than the head 22a, and the head 22a is located closer to the other side OP2 than the tip 22e.

The fourth joining tool 22D is joined so that, when viewed from the width direction Y, the fourth joining tool 22D penetrates the inside of the wood member 21 from the front and back surfaces 21a of the wood member 21 and penetrates into the CLT 10, similarly to the second joining tool 22B. The third connector 22C is embedded at an angle in a direction opposite to that of the third connector 22C and is obliquely embedded with respect to the surface JP. The fourth joint tool 22D is provided across the joint surface JP. Thus, the fourth connector 22D is provided such that the head side 22c of the shaft portion 22b is located inside the wood member 21 and the tip side 22d of the shaft portion 22b is located inside the CLT 10.
The fourth connector 22D is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, like the third connector 22C, the fourth connector 22D is inclined at an angle with respect to the virtual orthogonal plane OP so as to go from the other side OP2 to the one side OP1 on the virtual line AY. , Is buried in a diagonal direction. As a result, the tip 22e of the fourth connector 22D is located closer to the one side OP1 than the head 22a, and the head 22a is located closer to the other side OP2 than the tip 22e.
The third joint tool 22C and the fourth joint tool 22D are provided close to each other in the vicinity of the joint surface JP so as to intersect each other substantially vertically. The third connector 22C and the fourth connector 22D are provided between the head side 22c of the shaft portion 22b of the third connector 22C and the head side 22c of the shaft portion 22b of the fourth connector 22D, and The joint surface JP is located between the tip side 22d of the shaft portion 22b of the joint tool 22C and the tip side 22d of the shaft portion 22b of the fourth joint tool 22D, and is provided so as to sandwich the joint surface JP. ..

As a result of being provided as described above, each of the joining tools 22 has an angle such that when the CLT 10 is viewed from the thickness direction Z of the CLT 10, it is not parallel to the direction X orthogonal to the joining surface JP. It has been inserted diagonally.
The first and third joints 22A and 22C and the second and fourth joints 22B and 22D are provided substantially symmetrically with respect to the joint surface JP. When the virtual orthogonal plane OP is provided in the vicinity of the tips 22e of the first and second connectors 22A and 22B as shown in FIG. 4, the first and second connectors 22A and 22B, and the third and fourth connectors 22A and 22B. The joining tools 22C and 22D are provided substantially symmetrically with respect to the virtual orthogonal plane OP.
As described above, in the present embodiment, the four joining tools 22A, 22B, 22C, and 22D are provided as a set so as to penetrate the CLT 10 and the wood member 21 from different directions.
The first joining tool 22A and the third joining tool 22C are provided so that the vicinity of the tip 22e is close and intersects with each other. The second joint tool 22B and the fourth joint tool 22D are also provided so that the vicinity of the tip 22e is close and intersects with each other.
Each of the joining tools 22 is embedded and provided so that the head 22a is located below the surfaces 10a and 21a of the CLT 10 and the wooden member 21.

In the wooden member joint structure 20 as described above, for example, the wooden member 21 is moved relative to the CLT 10 in the first direction Y1 from one side OP1 side of the virtual orthogonal plane OP toward the other side OP2 side. When shear deformation acts on the joint surface JP as a boundary, a force that pulls them out acts on the first joint tool 22A and the fourth joint tool 22D. This can be resisted by the compressive axial force of the second joint tool 22B and the third joint tool 22C.
Further, when shear deformation acts on the joint surface JP as a boundary so that the wooden member 21 relatively moves in the second direction Y2 opposite to the first direction Y1 with respect to the CLT 10, the second connector 22B. Then, a force acts on the third connector 22C so as to pull them out. This can be resisted by the compression axial force of the first connector 22A and the fourth connector 22D.
Similarly, even when shear deformation acts in the direction Z with the joint surface JP as a boundary, it can be resisted by the compressive axial force of one of the joints 22.
Furthermore, when the wooden member 21 is going to be separated from the CLT 10 in the direction X, each of the joining tools 22A, 22B, 22C, and 22D is provided obliquely with respect to the direction X orthogonal to the joining surface JP. Each of the connectors 22 can resist this.

In the present embodiment, as described above, the joining tool 22 makes an angle with respect to the virtual orthogonal plane OP that is orthogonal to both the front and back surfaces 10a of the CLT 10 and the joining surface JP, straddles the joining surface JP, and the CLT10. And the wood member 21 is penetrated. Further, the four joining tools 22A, 22B, 22C, 22D are provided as a set so as to penetrate the CLT 10 and the wood member 21 from different directions. It has been clarified by an experiment that the rigidity and the proof stress are improved in the case where the joining tool 22 is provided in this way as compared with the other conventional forms. Here, the specifications and results of the experiment will be described next.

(Joint experiment of wood member joint structure)
FIG. 6 and FIG. 7 are explanatory views of each element test body used in the joint portion experiment of the wooden member joint structure of the first embodiment. FIG. 6 shows a list of test specimens. The number of test specimens is 4, and the parameter is the joining method between CLTs. The test body is a basic type of a structure simulating a joint structure (hereinafter, referred to as a three-dimensional oblique striking joint structure) between the CLT and the wood member as described with reference to FIGS. 3 to 5 as the first embodiment, Further, there are a working type, a spline joining type which is a conventional wooden member joining structure, and a screw cross diagonal striking joining type. Spline joining is a conventional method for joining wooden floorboards to wooden floorboards, in which a notch is provided at the end of the floorboard surface layer between opposing floorboards, and plywood is dropped into the notch. This is a joining method with screws.
FIG. 7A is a front view, a plan view, and a side view of a basic-type test body having the above-mentioned three-dimensional obliquely punched joint structure. The prototype test body 200 of the present invention is formed by joining the CLT 202 to both sides of the CLT 201 provided in the center. Each of the CLT 201 and the CLT 202 is joined by the wooden member joining structure 20 as described above, more specifically, by the four joining tools 22. That is, in the basic type test body 200, a total of eight joining tools 22 are used. A clearance C is provided between the CLT 201 and the CLT 202.
FIG.7(b) is the front view, top view, and side view of the implementation type test body of the said three-dimensional diagonal casting joining method. In addition to the structure of the basic type test body 200, the execution type test body 210 is applied with spline joining. That is, the structural plywood 211 is attached to the surfaces of the CLTs 201 and 202 so that the screws 212 are screwed into the surfaces of the CLTs 201 and 202 so as to straddle the surfaces of only one side of the CLT 201 and the CLT 202. It is joined.

In addition to the basic type test body and the working type test body as described above, a spline joint type test body and a screw cross diagonal striking joint type test body, which are conventional wood joining methods, were prepared.
The spline-bonded type test body is one in which CLT201 and CLT202 arranged as shown in FIG. 7 are spline-bonded by structural plywood 211 and screws 212. The connector 22 is not used for these connections.
The screw cross-slanting joint type test body is obtained by connecting CLT201 and CLT202 arranged as shown in FIG. 7 to each other by a diagonal striking structure from an orthogonal direction as shown as the conventional wood member joint structure of FIG. It is joined. That is, the joining tool is provided substantially parallel to a plane orthogonal to both the front and back surfaces of the CLT 201 and 202 and the joining surface. As the bonding tools, a total of eight bonding tools were used as in the basic type and working type test bodies 200 and 210.

FIG. 8 is a front view of an experimental device used for an experiment of a joint of a wooden member joint structure. FIG. 9 is a photograph of the test body placed on the experimental apparatus. By the jack 221 of the experimental apparatus 220, the compressive force and the tensile force were alternately applied with the upper end of the CLT 201 of each test body as the force application point 201a, whereby the shearing force of positive and negative alternating repetitions was applied to the joint. In each of the test bodies, two Naflon (registered trademark) sheets (not shown) were sandwiched between the respective sheared surfaces to reduce the frictional force generated by the moment when applying force.

FIG. 10 is a comparison table of the initial rigidity and the maximum proof stress of each test body obtained in the joint portion experiment of the wooden member joint structure of the present invention shown in FIGS. 6 to 9. Further, FIG. 11 shows the relationship between the load of each test body obtained in the joint experiment and the amount of relative slip displacement of the joint surface. In the experimental results shown in the figure, the basic type test body of the three-dimensional diagonal striking joint structure simulating the wood member joint structure of the present invention, the working type test body is shown by a bold line, and the conventional spline joint type test body, The screw cross-slanting joint type test body is shown by a thin line.
As shown in FIG. 10 and FIG. 11, the initial rigidity of each of the basic type test body of the three-dimensional diagonal striking joint structure simulating the wooden member joint structure of the present invention and the actual type test body is the same as that of the conventional type wooden joint method. Compared with a certain spline joint type test body and a screw cross diagonal striking joint type test body, high rigidity exceeding about 10 times was shown. Regarding the maximum yield strength, the maximum strength of each of the basic type test piece and the working type test piece of the three-dimensional oblique casting joining method is about 4 times higher than the conventional type spline joint type test piece. Indicated.
On the other hand, the maximum proof stress of the conventional type screw cross obliquely-bonded joint type test body was almost the same as that of the basic type test body and the working type test body having the three-dimensional diagonally-bonded joint structure. However, in the case of the conventional type screw cross-striking joint type test body, the relative slip displacement amount along the joint surface at the maximum proof stress is 36 mm, and at the joint surface between the floor boards of the building where the wooden member joint structure is used. , Was not an acceptable amount of displacement. Therefore, it was confirmed that, in the range of the experimental results under the present experimental conditions, when the screw-crossed oblique striking joint structure was used for the joint surface between the CLTs, the initial rigidity was low and there was a problem in deformability.
Further, in the case of the basic type test body of the three-dimensional obliquely-bonded joint structure of the present invention and the working type test body, the envelope curve of the relationship between the load and the relative slip displacement amount after the maximum proof stress showed a gradual decrease. Therefore, it was confirmed from the load-relative sliding displacement relationship after the maximum proof stress that brittle fracture can be prevented without suddenly losing the load bearing capacity brittlely after the maximum proof stress.

Next, the effect of the wood member joining structure 20 of the first embodiment will be described.
The wood member joining structure 20 is a wood member joining structure 20 that joins the CLT 10 and the wood member 21 by using a joining tool 22, and the joining tool 22 is a screw, a nail, or a bolt, and is in the plate thickness direction of the CLT 10. A joint surface JP is formed between the outer peripheral side surface 10b of the and the wood member 21, and the connector 22 is angled with respect to a virtual orthogonal plane OP orthogonal to both the front and back surfaces 10a of the CLT 10 and the joint surface JP, It penetrates across the joint surface JP.
According to the above-described configuration, the connector 22 that is a screw, a nail, or a bolt has a joint surface JP formed between the outer peripheral side surface 10b of the CLT 10 and the surface 21b of the wooden member 21 to be joined, The CLT 10 and the front and back surfaces 10a are penetrated across the joint surface JP at an angle with respect to a virtual orthogonal plane OP that is orthogonal to both sides. That is, when the CLT 10 is viewed from the thickness direction Z of the CLT 10, the connector 22 is obliquely inserted at an angle to the direction X orthogonal to the joint surface JP. Therefore, the shearing resistance force at the joint surface JP is increased by the tensile axial force and the compressive axial force of the connector 22. Therefore, the CLT 10 and the wooden member 21 can be firmly joined.

Moreover, the connector 22 includes a first connector 22A and a second connector 22B, and the first connector 22A and the second connector 22B intersect with each other in the vicinity of the joint surface JP so that the CLT 10 and the wooden member 21. Have been penetrated by.
According to the above configuration, the first connector 22A and the second connector 22B are inserted into the CLT 10 and the wooden member 21 so as to intersect each other in the vicinity of the joint surface JP. Therefore, the tensile force applied by one of the joining tools 22 bears the compressive axial force by the other joining tool 22, and the shearing resistance along the joint surface JP can be increased. Therefore, the CLT 10 and the wooden member 21 can be firmly joined.

Further, the connector 22 further includes a third connector 22C and a fourth connector 22D, and the first connector 22A and the second connector 22B are both virtual orthogonal planes from one side OP1 of the virtual orthogonal plane OP. The third connector 22C and the fourth connector 22D are inserted so as to be directed to the other side OP2 sandwiching OP, and both of the third connector 22C and the fourth connector 22D are directed from the other side OP2 of the virtual orthogonal plane OP to the one side OP1, and The CLT 10 and the wooden member 21 are inserted so as to intersect with each other in the vicinity of the joint surface JP.
According to the above configuration, the first connector 22A and the second connector 22B are arranged so that both the first connector 22A and the second connector 22B face from the one side OP1 of the virtual orthogonal plane OP toward the other side OP2 sandwiching the virtual orthogonal plane OP. Both the 3rd connector 22C and the 4th connector 22D are penetrated by CLT10 and the wood member 21 so that it may go to the one side OP1 from the other side OP2 of virtual orthogonal plane OP. That is, in the direction Y orthogonal to the virtual orthogonal plane OP, the first connector 22A and the second connector 22B, and the third connector 22C and the fourth connector 22D are provided so as to face each other. Therefore, the in-plane direction component force and the out-of-plane direction component force that can occur in the direction Y orthogonal to the virtual orthogonal plane OP are the first and second joint tools 22A and 22B and the third and fourth joint tools 22C and 22D. These are offset by being combined, and separation of the CLT 10 and the wooden member 21 and out-of-plane deformation can be effectively suppressed.
Further, similarly to the first joint tool 22A and the second joint tool 22B, the third joint tool 22C and the fourth joint tool 22D are inserted into the CLT 10 and the wooden member 21 so as to intersect with each other near the joint surface JP. There is. For this reason, the third connector 22C and the fourth connector 22D are similar to the first connector 22A and the second connector 22B, and the tensile member of the one connector 22 bears the tensile axial force of the other connector 22C. 22 bears the compressive axial force, and can increase the shearing resistance along the joint surface JP.
The above effects are synergistic, and the CLT 10 and the wooden member 21 can be firmly joined.

In particular, in the present embodiment, when the CLT 10 is viewed from the thickness direction Z of the CLT 10, the four joining tools 22A, 22B, 22C, and 22D form one set, and these are facing each other from different directions, It has a structure that penetrates diagonally. Therefore, the in-plane component force and the out-of-plane component force that may occur in various directions are canceled by each connector 22, and the separation between the CLT 10 and the wooden member 21 and the out-of-plane deformation can be effectively suppressed.

Further, as already described as the result of the experiment, in the present embodiment, since the rigidity and the maximum proof strength per one of the joining tools 22 are increased, the conventional plate material in the thickness direction, for example, as shown in FIG. The number of joints 22 can be reduced compared to when diagonally striking nails, screws, etc. in the thickness direction of the plate material from the direction orthogonal to the joint surface between the members when viewed from above. Is. Therefore, the construction cost can be reduced.

Further, each of the joining tools 22 is embedded and provided so that the head 22a is located below the surfaces 10a and 21a of the CLT 10 and the wooden member 21.
According to the above configuration, the connector 22 does not affect the accommodation of the finishing material provided on the CLT 10 or the wooden member 21. Therefore, a wooden structure having a high degree of freedom in design can be realized.

[Second Embodiment]
Next, as a second embodiment, when the CLT 10 shown in FIG. 1 as a portion viewed from the arrow B is used as the wall 3, the CLT 10 is joined to the floor 4 formed of, for example, a wooden member. A joint structure 30 for vertically joining to another wood member will be described. FIG. 12 is a plan view of the wooden member joint structure 30 according to the present embodiment as viewed from the direction Z. FIGS. 13A and 13B are side views of FIG. 12 viewed from a direction Y and a direction X that are orthogonal to the direction Z, respectively. 12 and 13, the connector 22 provided inside the CLT 10 and not visible from the outside is also shown by a solid line.
In the wood member joining structure 30 of the present embodiment, the wood member 21 to be joined with the CLT 10 is a plate material, which may be, for example, CLT or another kind of wood plate material. Similar to the CLT 10, the wooden member 21 has two front and back surfaces 21a whose outer contours are the sides extending in the length direction and the sides extending in the width direction, and the sides extending in the thickness direction are the outer contours. It is provided with four outer peripheral side surfaces 21b.
The joint surface JP between the CLT 10 and the wooden member 21 is formed between any of the outer peripheral side surfaces 10b of the CLT 10 and any surface of the wooden member 21, particularly one of the front and back surfaces 21a in the present embodiment. That is, the CLT 10 and the wooden member 21 are provided such that the outer peripheral side surface 10b of the CLT 10 and the front and back surfaces 21a of the wooden member 21 face each other and abut against each other.

The CLT 10 and the wooden member 21 are joined by using the joining tool 22, and the wooden member joining structure 30 is constructed. The connector 22 is a screw, a nail, or a bolt. In particular, in the present embodiment, the connector 22 is a full-screw type screw in which screws are wholly formed on the surface of the shaft portion.
The joining tool 22 includes a first joining tool 22A, a second joining tool 22B, a third joining tool 22C, and a fourth joining tool 22D.
Each of the joining tools 22A, 22B, 22C, 22D forms an angle with respect to a virtual orthogonal plane OP orthogonal to both the front and back surfaces 10a, 10c of the CLT 10 and the joining surface JP, and straddles the joining surface JP, and the CLT 10 and the wood material. It penetrates the member 21.

When viewed from the width direction Y orthogonal to the virtual orthogonal plane OP (see FIG. 13A ), the first connector 22</b>A penetrates from the front and back surfaces 10 a of the CLT 10 into the CLT 10 and penetrates into the wood member 21. As described above, it is embedded at an angle with respect to the joint surface JP and obliquely embedded. The first joint tool 22A is provided across the joint surface JP. As a result, the first connector 22A is provided such that the head side 22c of the shaft portion 22b is located inside the CLT 10 and the tip end side 22d of the shaft portion 22b is located inside the wood member 21.
The first connector 22A is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, as shown in FIG. 13B, for example, the first connector 22A forms a virtual orthogonal plane OP from one side OP1 of the virtual orthogonal plane OP on the virtual line AY extending along the width direction Y. It is embedded in an oblique direction so as to be inclined toward the other side OP2 sandwiched with respect to the virtual orthogonal plane OP. As a result, the tip 22e of the first connector 22A is located closer to the other side OP2 than the head 22a, and the head 22a is located closer to one side OP1 than the tip 22e.

When viewed from the width direction Y, the second joint tool 22B penetrates the inside of the CLT 10 from the front and back surfaces 10c on the opposite side of the front and back surfaces 10a of the CLT 10 into which the first joint tool 22A has penetrated, and then penetrates into the wood member 21. It is embedded at an angle with respect to the joint surface JP so as to penetrate, and is obliquely embedded. The second joint tool 22B is provided across the joint surface JP. As a result, the second connector 22B is provided such that the head side 22c of the shaft portion 22b is located inside the CLT 10 and the tip end side 22d of the shaft portion 22b is located inside the wood member 21.
The second connector 22B is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, like the first connector 22A, the second connector 22B is inclined at an angle with respect to the virtual orthogonal plane OP so as to go from the one side OP1 to the other side OP2 on the virtual line AY. , Is buried in a diagonal direction. As a result, the tip 22e of the second connector 22B is located closer to the other side OP2 than the head 22a, and the head 22a is located closer to one side OP1 than the tip 22e.
The first joint tool 22A and the second joint tool 22B are provided close to each other in the vicinity of the joint surface JP so as to intersect each other substantially vertically. The first joint tool 22A and the second joint tool 22B are connected between the head side 22c of the shaft section 22b of the first joint tool 22A and the tip side 22d of the shaft section 22b of the second joint tool 22B, and the first joint. The joint surface JP is located between the tip side 22d of the shaft portion 22b of the tool 22A and the head side 22c of the shaft portion 22b of the second joint tool 22B, and the joint surface JP is provided so as to sandwich the joint surface JP. ..

When viewed from the width direction Y, the third connector 22C penetrates the inside of the CLT 10 from the front and back surfaces 10a of the CLT 10 and penetrates into the wood member 21 in the same manner as the first connector 22A. It is embedded at an angle with respect to, and is obliquely embedded. The third joint tool 22C is provided across the joint surface JP. Thus, the third connector 22C is provided such that the head side 22c of the shaft portion 22b is located inside the CLT 10 and the tip end side 22d of the shaft portion 22b is located inside the wooden member 21.
The third connector 22C is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, the third connector 22C is inclined at an angle with respect to the virtual orthogonal plane OP so as to go from the other side OP2 to the one side OP1 on the virtual line AY, contrary to the first connector 22A. And is buried diagonally. As a result, the tip 22e of the third connector 22C is located closer to the one side OP1 than the head 22a, and the head 22a is located closer to the other side OP2 than the tip 22e.

When viewed from the width direction Y, the fourth connector 22D is similar to the second connector 22B in that the third connector 22C of the CLT 10 is penetrated into the front and back surfaces 10c to 10C of the CLT10. It is embedded at an angle with respect to the joint surface JP so as to penetrate the interior and penetrate into the wooden member 21 in an oblique direction. The fourth joint tool 22D is provided across the joint surface JP. Accordingly, the fourth connector 22D is provided such that the head side 22c of the shaft portion 22b is located inside the CLT 10 and the tip end side 22d of the shaft portion 22b is located inside the wood member 21.
The fourth connector 22D is not provided in parallel with the virtual orthogonal plane OP, but is inclined with respect to the virtual orthogonal plane OP at a certain angle or more, as described above. In particular, like the third connector 22C, the fourth connector 22D is inclined at an angle with respect to the virtual orthogonal plane OP so as to go from the other side OP2 to the one side OP1 on the virtual line AY. , Is buried in a diagonal direction. As a result, the tip 22e of the fourth connector 22D is located closer to the one side OP1 than the head 22a, and the head 22a is located closer to the other side OP2 than the tip 22e.
The third joint tool 22C and the fourth joint tool 22D are provided close to each other in the vicinity of the joint surface JP so as to intersect each other substantially vertically. The third joint tool 22C and the fourth joint tool 22D are connected between the head side 22c of the shaft section 22b of the third joint tool 22C and the tip side 22d of the shaft section 22b of the fourth joint tool 22D, and the third joint. The joint surface JP is located between the tip side 22d of the shaft portion 22b of the tool 22C and the head side 22c of the shaft portion 22b of the fourth joint tool 22D, and is provided so as to sandwich the joint surface JP. ..

As a result of being provided as described above, each of the joining tools 22 has an angle such that when the CLT 10 is viewed from the thickness direction X of the CLT 10, it is not parallel to the direction Z orthogonal to the joining surface JP. It has been inserted diagonally.
As shown in FIG. 12, the first and third joints 22A, 22C and the second and fourth joints 22B, 22D pass through the center of the thickness direction X of the CLT 10 and are parallel to the front and back surfaces 10a, 10c. They are provided substantially symmetrically with respect to the plane CP. Further, when the virtual orthogonal plane OP is provided in the vicinity of the tips 22e of the first and second joining tools 22A and 22B, the first and second joining tools 22A and 22B and the third and fourth joining tools 22C and 22D. Are provided substantially symmetrically with respect to the virtual orthogonal plane OP.
As described above, in the present embodiment, the four joining tools 22A, 22B, 22C, and 22D are provided as a set so as to penetrate the CLT 10 and the wood member 21 from different directions.
The first joining tool 22A and the third joining tool 22C are provided so that the vicinity of the tip 22e is close and intersects with each other. The second joint tool 22B and the fourth joint tool 22D are also provided so that the vicinity of the tip 22e is close and intersects with each other.
Each joining tool 22 is embedded and provided so that the head 22a is located below the surfaces 10a and 10c of the CLT 10.

In the wooden member joining structure 30 as described above, for example, the wooden member 21 moves relative to the CLT 10 in the first direction Y1 from one side OP1 side of the virtual orthogonal plane OP toward the other side OP2 side. When shear deformation acts on the joint surface JP as a boundary, a force that pulls them out acts on the first joint tool 22A and the second joint tool 22B. This can be resisted by the compressive axial force of the third connector 22C and the fourth connector 22D.
Further, when shear deformation acts on the joint surface JP as a boundary so that the wooden member 21 relatively moves in the second direction Y2 opposite to the first direction Y1 with respect to the CLT 10, the third connector 22C. Then, a force that pulls them out acts on the fourth connector 22D. This can be resisted by the compressive axial force of the first connector 22A and the second connector 22B.
Similarly, even when shear deformation acts in the direction X with the joint surface JP as a boundary, it can be resisted by the compressive axial force of one of the joints 22.
Furthermore, when the wooden member 21 is going to be separated from the CLT 10 in the direction Z, each of the joining tools 22A, 22B, 22C, and 22D is provided obliquely with respect to the direction Z orthogonal to the joining surface JP. Each of the connectors 22 can resist this.

In the present embodiment, as described above, the joining tool 22 makes an angle with respect to the virtual orthogonal plane OP that is orthogonal to both the front and back surfaces 10a and 10c of the CLT 10 and the joining surface JP, and straddles the joining surface JP. , CLT 10 and the wood member 21. Further, the four joining tools 22A, 22B, 22C, 22D are provided as a set so as to penetrate the CLT 10 and the wood member 21 from different directions. It has been verified by the experiment already described in the first embodiment that the rigidity and the proof stress are improved when the joining tool 22 is provided in this manner as compared with the other conventional forms.

Next, the effect of the wood member joining structure 30 of the second embodiment will be described.
The wood member joining structure 30 is the wood member joining structure 30 that joins the CLT 10 and the wood member 21 by using the joining tool 22, and the joining tool 22 is a screw, a nail, or a bolt, and is in the plate thickness direction of the CLT 10. A joint surface JP is formed between the outer peripheral side surface 10b of the CLT 10 and the wooden member 21, and the joint tool 22 is angled with respect to a virtual orthogonal plane OP orthogonal to both the front and back surfaces 10a and 10c of the CLT 10 and the joint surface JP. And penetrates the joint surface JP.
According to the above configuration, the connector 22, which is a screw, a nail, or a bolt, has a joint surface JP formed between the outer peripheral side surface 10b of the CLT 10 and the surface 21a of the wooden member 21 to be joined, The CLT 10 is penetrated across the joint surface JP at an angle to the virtual orthogonal plane OP that is orthogonal to the front and back surfaces 10a and 10c of the CLT 10. That is, when the CLT 10 is viewed from the thickness direction X of the CLT 10, the connector 22 is obliquely inserted at an angle to the direction Z orthogonal to the joint surface JP. Therefore, the shearing resistance force at the joint surface JP is increased by the tensile axial force and the compressive axial force of the connector 22. Therefore, the CLT 10 and the wooden member 21 can be firmly joined.

Moreover, the connector 22 includes a first connector 22A and a second connector 22B, and the first connector 22A and the second connector 22B intersect with each other in the vicinity of the joint surface JP so that the CLT 10 and the wooden member 21. Have been penetrated by.
According to the above configuration, the first connector 22A and the second connector 22B are inserted into the CLT 10 and the wooden member 21 so as to intersect each other in the vicinity of the joint surface JP. Therefore, the tensile force applied by one of the joining tools 22 bears the compressive axial force by the other joining tool 22, and the shearing resistance along the joint surface JP can be increased. Therefore, the CLT 10 and the wooden member 21 can be firmly joined.

Further, the connector 22 further includes a third connector 22C and a fourth connector 22D, and the first connector 22A and the second connector 22B are both virtual orthogonal planes from one side OP1 of the virtual orthogonal plane OP. The third connector 22C and the fourth connector 22D are inserted so as to be directed to the other side OP2 sandwiching OP, and both of the third connector 22C and the fourth connector 22D are directed from the other side OP2 of the virtual orthogonal plane OP to the one side OP1, and The CLT 10 and the wooden member 21 are inserted so as to intersect with each other in the vicinity of the joint surface JP.
According to the above configuration, the first connector 22A and the second connector 22B are arranged so that both the first connector 22A and the second connector 22B face from the one side OP1 of the virtual orthogonal plane OP toward the other side OP2 sandwiching the virtual orthogonal plane OP. Both the 3rd connector 22C and the 4th connector 22D are penetrated by CLT10 and the wood member 21 so that it may go to the one side OP1 from the other side OP2 of virtual orthogonal plane OP. That is, in the direction Y orthogonal to the virtual orthogonal plane OP, the first connector 22A and the second connector 22B, and the third connector 22C and the fourth connector 22D are provided so as to face each other. Therefore, the in-plane direction component force and the out-of-plane direction component force that can occur in the direction Y orthogonal to the virtual orthogonal plane OP are the first and second joint tools 22A and 22B and the third and fourth joint tools 22C and 22D. These are offset by the combination, and the separation between the CLT 10 and the wooden member 21 and the out-of-plane deformation can be effectively suppressed.
Further, similarly to the first joint tool 22A and the second joint tool 22B, the third joint tool 22C and the fourth joint tool 22D are inserted into the CLT 10 and the wooden member 21 so as to intersect with each other near the joint surface JP. There is. For this reason, the third connector 22C and the fourth connector 22D are similar to the first connector 22A and the second connector 22B, and the tensile member of the one connector 22 bears the tensile axial force of the other connector 22C. 22 bears the compressive axial force, and can increase the shearing resistance along the joint surface JP.
The above effects are synergistic, and the CLT 10 and the wooden member 21 can be firmly joined.

In particular, in the present embodiment, when the CLT 10 is viewed from the direction Z, the four joining tools 22A, 22B, 22C, and 22D form a set, and these are obliquely inserted so as to face each other from different directions. It has a structure. Therefore, the in-plane component force and the out-of-plane component force that may occur in various directions are canceled by each connector 22, and the separation between the CLT 10 and the wooden member 21 and the out-of-plane deformation can be effectively suppressed.

Further, as obtained in the above-described joining portion experiment, in the present embodiment, since the initial rigidity and the maximum proof stress per joining tool 22 are increased, the thickness of the conventional plate material as shown in FIG. Compared with the case of diagonally striking nails, screws, etc. in the thickness direction of the plate material from a direction orthogonal to the joint surface between the members when viewed in a plan view from the vertical direction, It can be reduced. Therefore, the construction cost can be reduced.

Further, each of the joining tools 22 is embedded and provided so that the head portion 22a is located below the surfaces 10a and 10c of the CLT 10.
According to the above configuration, the connector 22 does not affect the accommodation of the finishing material provided on the CLT 10. Therefore, a wooden structure having a high degree of freedom in design can be realized.

The wood member joining structure of the present invention is not limited to the above-described embodiments described with reference to the drawings, and various other modifications can be considered within the technical scope thereof.
For example, in each of the above-described embodiments, the joint structure with another wall material or floor material when the CLT 10 is used as a wall material or floor material has been described, but the present invention is not limited to this, and for example, a horizontal member and a wall. It is needless to say that the present invention can be applied to the joining of the above and the joining of the horizontal members. In these cases, either the horizontal member or the wall may be CLT, or both may be CLT.
Other than this, the configurations described in the above embodiments can be selected or changed to other configurations without departing from the gist of the present invention.

1 building 21a front and back (front)
2 Foundation 21b Outer peripheral side surface (front surface)
3 wall 22 joining tool 4 floor 22A 1st joining tool 10 CLT 22B 2nd joining tool 10a, 10c front and back side 22C 3rd joining tool 10b outer peripheral side surface 22D 4th joining tool 11 Lamina JP joining surface 12 ply OP virtual orthogonal to joining surface Plane 20, 30 Wood member joining structure OP1 One side sandwiching a virtual orthogonal plane 21 Wood member OP2 Other side sandwiching a virtual orthogonal plane

Claims (3)

A wood member joining structure for joining a CLT and a wood member using a joining tool,
The connector is a screw, a nail, or a bolt,
A joint surface is formed between the outer peripheral side surface of the CLT in the plate thickness direction and the wooden member,
The wood-member joining structure is characterized in that the joining tool penetrates across the joining surface at an angle to a virtual orthogonal plane that is orthogonal to both the front and back surfaces of the CLT and the joining surface. The connector includes a first connector and a second connector,
The wood member joining structure according to claim 1, wherein the first joining tool and the second joining tool are inserted into the CLT and the wood member so as to intersect with each other near the joining surface. .. The connector further comprises a third connector and a fourth connector,
The first connector and the second connector are both penetrated from one side of the virtual orthogonal plane toward the other side sandwiching the virtual orthogonal plane,
The third connector and the fourth connector are both the CLT and the CLT so as to extend from the other side of the virtual orthogonal plane to the one side and to intersect each other near the joint surface. The wood member joining structure according to claim 2, wherein the wood member joining structure penetrates the wood member.