JP2021161620A - Load-bearing wall structure - Google Patents

Abstract

To improve toughness of a load-bearing wall and to maintain sufficient earthquake resistance even with a wooden building in a relatively large scale.SOLUTION: A load-bearing wall 1 comprises first frame materials 2 which adjoin each other at intervals, and a plurality of coupling materials 3 which each have both end parts joined to the adjacent first frame materials 2 to couple the adjacent first frame materials 2 to each other. The plurality of coupling materials 3 are arranged at intervals, side by side, in a length direction of the adjacent first frame materials 2, and moment resistance joining which resists an external force when the adjacent first frame materials 2 receive the external force is applied to joining parts of the plurality of coupling materials 3 for the adjacent first frame materials 2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bearing wall structure.

In wooden buildings, bearing walls are provided to meet the required amount of walls in order to withstand horizontal loads during earthquakes and typhoons.
Such a bearing wall is configured by bridging an opening between adjacent column members or attaching a structural plywood so as to cover the entire opening between adjacent column members (). For example, see Patent Document 1).

Japanese Unexamined Patent Publication No. 2009-293367

By the way, in recent years, it has been required to use a bearing wall for the construction of a relatively large-scale wooden building such as a middle-rise / high-rise wooden building or a wooden building having a large total area.
However, when a normal bearing wall, such as that used for a small wooden detached house, is applied to a relatively large wooden building, the toughness, which is a property for exerting tenacity, may not be sufficient. , It is difficult to maintain earthquake resistance.

The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the toughness of a bearing wall so that sufficient earthquake resistance can be maintained even in a relatively large-scale wooden building.

The invention according to claim 1 is a load-bearing wall 1 structure, in which, for example, as shown in FIGS. 1 to 7, the first frame material 2 adjacent to each other at intervals is used.
Both ends are joined to the adjacent first frame members 2, and a plurality of connecting members 3 for connecting the adjacent first frame members 2 to each other are provided.
The plurality of connecting members 3 are arranged side by side in the length direction of the adjacent first frame members 2 and spaced apart from each other.
A moment resistance joint that resists an external force when the adjacent first frame member 2 receives an external force is applied to the joint portion of the plurality of connecting members 3 to the adjacent first frame member 2. It is characterized by that.

According to the invention of claim 1, the plurality of connecting members 3 are arranged side by side in the length direction of the adjacent first frame members 2 and spaced apart from each other, and the adjacent first frame members 3 are adjacent to each other. When the adjacent first frame members 2 receive an external force, a moment resistance joint that resists the external force is applied to the joints of the plurality of connecting members 3 with respect to 2, so that the adjacent first frame members 2 are adjacent to each other. It is possible to improve the toughness of the skeleton portion of the bearing wall 1 composed of the plurality of connecting members 3.
Therefore, even when the adjacent first frame members 2 receive an external force, the plurality of connecting members 3 secure and maintain a high toughness state, and can resist the external force without impairing the function as the bearing wall 1. Become. As a result, sufficient earthquake resistance can be maintained even in a relatively large-scale wooden building.

The invention according to claim 2 has the bearing wall 1 structure according to claim 1, as shown in FIG. 1, for example.
Further, a panel material 4 for connecting the adjacent first frame materials 2 to each other is provided.
The moment resistance joint applied to the joint portion of the plurality of connecting materials 3 with respect to the adjacent first frame material 2 resists the external force even after the panel material 4 is destroyed by the external force. It is characterized by that.

According to the second aspect of the present invention, since the panel material 4 for connecting the adjacent first frame materials 2 to each other is further provided, the proof stress of the bearing wall 1 can be improved by the panel material 4.
Further, the moment resistance joint applied to the joint portion of the plurality of connecting materials 3 with respect to the adjacent first frame material 2 resists the external force even after the panel material 4 is destroyed by the external force. Even after the panel material 4 is damaged due to the above, the bearing wall 1 can secure and maintain a high toughness state by the plurality of connecting materials 3.

The invention according to claim 3 has the bearing wall 1 structure according to claim 1 or 2, as shown in FIGS. 2 and 3, for example.
At positions of the first frame member 2 where the plurality of connecting members 3 are arranged, a plurality of joining insertion holes 2a and 2b into which the ends of the plurality of connecting members 3 are inserted are formed.
A gap is formed between the inner side surface of the joining insertion holes 2a and 2b and the outer side surface of the connecting member 3, and the gap is filled with an adhesive.

According to the invention of claim 3, the inner side surface of the joining insertion holes 2a and 2b formed at the position where the plurality of connecting members 3 are arranged in the first frame member 2 and the outer surface of the connecting member 3 Since a gap is formed between the side surface and the gap and the gap is filled with an adhesive, when the adhesive is cured while holding the connecting material 3, stress is applied through the adhesive force of the adhesive and the connecting material 3. Will be transmitted and the joint strength will be generated. Therefore, the plurality of connecting members 3 can be reliably moment-resistant bonded to the adjacent first frame members 2, and the skeleton portion of the bearing wall 1 composed of the adjacent first frame members 2 and the plurality of connecting members 3. The deformation performance of the lumber can be significantly improved.

The invention according to claim 4 has the bearing wall 1 (1A, 1C) structure according to claim 1 or 2, as shown in FIGS. 4, 6 and 7, for example.
A plurality of joining insertion holes 2a and 32b into which the ends of the plurality of connecting members 13 and 33 are inserted are formed at positions of the first frame material 2 where the plurality of connecting members 13 and 33 are arranged. Being done
The vertical and horizontal dimensions of the end cross section of the connecting members 13 and 33 to be inserted into the joining insertion holes 2a and 32b are the inner surface of the joining insertion holes 2a and 32b and the ends of the connecting members 13 and 33. It is characterized in that it is set so that a gap is not formed between the portion and the outer surface.

According to the invention of claim 4, the vertical and horizontal dimensions in the end cross section of the connecting members 13 and 33 to be inserted into the joining insertion holes 2a and 32b are the inner side surfaces of the joining insertion holes 2a and 32b. Since a gap is not formed between the ends of the connecting members 13 and 33 and the outer surface, the inner surface of the joining insertion holes 2a and 32b and the outer surface at the ends of the connecting members 13 and 33 are formed. And fit perfectly. Therefore, if a wide contact area between the inner surface of the insertion holes 2a and 32b for joining and the outer surface at the ends of the connecting members 13 and 33 is secured, the connection to the first frame material 2 can be performed without using an adhesive. The joint strength of the materials 13 and 33 can be improved. Therefore, the plurality of connecting members 13 and 33 can be reliably moment-resistant bonded to the adjacent first frame members 2, and the bearing wall composed of the adjacent first frame members 2 and the plurality of connecting members 13 and 33 can be joined. The deformation performance of the skeleton portion of 1 can be remarkably improved.

The invention according to claim 5 has the bearing wall 1 (1B) structure according to claim 1 or 2, for example, as shown in FIG.
At the position of the first frame member 2 where the plurality of connecting members 23 are arranged, a plurality of joining insertion holes 2b into which the ends of the plurality of connecting members 23 are inserted are formed.
A female screw is formed on the inner surface of the insertion hole 2b for joining.
The connecting member 23 is a rod-shaped member, and is characterized in that a male screw is formed at an end portion of the connecting member 23.

According to the invention of claim 5, a plurality of joining insertion holes into which the ends of the plurality of connecting members 23 are inserted at the positions where the plurality of connecting members 23 are arranged in the first frame member 2. 2b is formed, a female screw is formed on the inner surface of the insertion hole 2b for joining, the connecting member 23 is a rod-shaped member, and a male screw is formed at the end of the connecting member 23. The end portion of the 23 is screwed into the joining insertion hole 2b, and the inner side surface of the joining insertion hole 2b and the outer surface of the connecting member 23 are in close contact with each other. Therefore, the bonding strength of the connecting material 23 to the first frame material 2 can be improved without using an adhesive. Therefore, the plurality of connecting members 23 can be reliably moment-resistant bonded to the adjacent first frame members 2, and the skeleton portion of the bearing wall 1 composed of the adjacent first frame members 2 and the plurality of connecting members 23. The deformation performance of the lumber can be significantly improved.

The invention according to claim 6 has the bearing wall 1 (B) structure according to claim 5, as shown in FIG. 5, for example.
Both ends of the connecting member 23 project laterally from the outer surfaces 2e of the adjacent first frame members 2 that are parallel to each other and do not face each other, and nuts 23a are provided at the projecting both ends. It is characterized by.

According to the invention of claim 6, both ends of the connecting member 23 project laterally from the outer side surfaces 2e of the adjacent first frame members 2 that are parallel to each other and do not face each other, and the protruding end portions. Since the nut 23a is provided, the connecting member 23 can be prevented from being pulled out from the joining insertion hole 2b, and the joining strength of the connecting member 23 to the first frame member 2 can be further improved.

According to the present invention, the toughness of the bearing wall can be improved, and sufficient seismic resistance can be maintained even in a relatively large-scale wooden building.

It is a perspective view which shows the bearing wall. It is sectional drawing which shows an example of the joint part of the connecting material with respect to the 1st frame material. It is sectional drawing which shows an example of the joint part of the connecting material with respect to the 1st frame material. It is sectional drawing which shows the bearing wall when a single pipe is used. It is sectional drawing which shows the bearing wall when a long bolt is used. It is a perspective view which shows the bearing wall when the wooden horizontal member is used. It is a partially enlarged view which shows the joint part of the horizontal member with respect to the 1st frame material. It is a perspective view which shows the bearing wall which used the wooden panel for construction as a panel material. It is a plan sectional view which shows the arrangement example of the wooden panel for construction. It is a plan sectional view which shows the connecting structure of the bearing wall adjacent in the orthogonal direction. It is a perspective view explaining the arrangement of the connecting material with respect to the 1st frame material shared in the corner part. It is sectional drawing which shows an example of the joint part of the connecting material with respect to the 1st frame material shared in the corner part. (A) is a regular cross-sectional view showing a connecting structure of bearing walls adjacent to each other in the same direction, and (b) is a plan cross-sectional view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, although the embodiments described below are provided with various technically preferable limitations for carrying out the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. No. The directions in the following embodiments and illustrated examples are set for convenience of explanation.

In FIG. 1, reference numeral 1 indicates a bearing wall. The bearing wall 1 is mainly used for the construction of a relatively large-scale wooden building such as a middle-rise / high-rise wooden building or a wooden building having a large total area. In addition to such a relatively large-scale wooden building, it may be used for a relatively small-scale wooden building such as a detached house, or may be used when remodeling a building. Further, the bearing wall 1 may be used not only for a building by a frame wall construction method or a panel construction method but also for a building by a wooden frame construction method, or may be used for a building having a mixed structure in which a wooden structure and a non-wooden structure are combined. ..

Further, when such a bearing wall 1 is incorporated into a building, the bearing wall 1 is erected on a lower structural member 6 (see FIGS. 4 and 5) such as a foundation, a beam, a base, and a floor. Superstructure materials 7 (see FIGS. 4 and 5) such as beams, floors, and upper floor walls (including bearing walls) are placed on the floors. That is, the bearing wall 1 is provided in a state of being sandwiched between the lower structural member 6 and the upper structural member 7.

Further, the bearing wall 1 is joined to the lower structural member 6 and the upper structural member 7 by a bar such as a steel bar, a bolt, or a long bolt. That is, the bearing wall 1 is formed with an insertion hole 2c (see FIG. 7) into which one end of the bar member is inserted, and the other end of the bar member is also inserted into the lower structural member 6 and the upper structural member 7. A hole will be formed.
As the bar material, a long bar material having an uneven surface, such as a deformed steel bar or a full-threaded bolt, is preferably used.
Further, a method called a Glued in Rod (GIR), which will be described later, is adopted for joining the bearing wall 1 with the bar member to the lower structural member 6 and the upper structural member 7.
In the present embodiment, the glue-in rod method is adopted for joining the bearing wall 1 with the bar member and the lower structural member 6 and the upper structural member 7, but for example, a metal fitting for joining is used. Method may be adopted.

The load-bearing wall 1 as described above comprises a first frame member 2 adjacent to each other at intervals, a plurality of connecting members 3 connecting the adjacent first frame members 2 to each other, and adjacent first frame members 2 to each other. It includes a panel material 4 to be connected. Further, the bearing wall 1 further includes a second frame member 5 that connects adjacent first frame members 2 to each other.

The first frame material 2 is a structural laminated wood that is longer in the vertical direction than in the horizontal direction (horizontal direction / horizontal direction), and is formed in a square shape in a plan view. In the present embodiment, the structural laminated lumber is used as the first frame material 2, but it may be a normal square lumber or, for example, a pillar lumber made of LVL (Laminated Veneer Lumber). That is, the first frame material 2 is a wooden columnar member. Further, the cross-sectional shape may not be a square shape but may be a rectangular shape or a circular shape (a perfect circle or an oval).

Among the first frame members 2, the plurality of connecting members 3 are arranged at positions (the sides facing each other in the adjacent first frame members 2 and hereinafter referred to as inner side surfaces 2d). A plurality of joining insertion holes 2a or a plurality of joining insertion holes 2b into which the ends of the connecting members 3 are inserted and joined are formed at intervals in the vertical direction.
As shown in FIG. 2, the plurality of insertion holes 2a for joining are holes (non-penetrating holes) that do not penetrate the first frame material 2 in the left-right direction, and are formed on the inner side surface 2d of the adjacent first frame material 2. Has been done.
As shown in FIG. 3, the plurality of insertion holes 2b for joining are through holes that penetrate the first frame material 2 in the left-right direction, and from the inner side surface 2d of the adjacent first frame material 2 to the inner side surface 2d. It is formed to penetrate through the side surfaces (hereinafter, outer surface 2e) of the adjacent first frame members 2 that are parallel to each other and do not face each other on the opposite side.
In the present embodiment, the joining insertion hole 2a shown in FIG. 2 is adopted, but the joining insertion hole 2b shown in FIG. 3 may be adopted and is not particularly limited.
Further, the above-mentioned insertion hole 2c is formed at the upper end portion of the first frame material 2. Although not shown, an insertion hole 2c is also formed at the lower end of the first frame material 2.

The plurality of connecting members 3 are long bars in the horizontal direction (horizontal direction / horizontal direction), and in the present embodiment, they are long bars having irregularities on the surface, such as deformed steel bars and all-screw bolts. Bars are preferably used. Therefore, in the present embodiment, the connecting member 3 is hereinafter referred to as a connecting rod member 3.
The plurality of connecting rods 3 are arranged in the length direction (vertical direction) of the adjacent first frame members 2 and spaced apart from each other in the length direction (vertical direction) of the adjacent first frame members 2. It is provided with a space. Although the intervals between the plurality of connecting rods 3 are equal in the present embodiment, they may be arranged at different intervals. Further, it is desirable that the plurality of connecting rods 3 are provided as evenly as possible from the lower end to the upper end of the adjacent first frame members 2. Further, it is desirable that the number of the bearing wall 1 used is not about several (for example, 3 to 4) but more, for example, 10 or more.

Further, both ends of the plurality of connecting rods 3 are joined to the adjacent first frame members 2 by a glue-in rod method. More specifically, the gap between the connecting rod 3 and the joining insertion hole 2a on the first frame material 2 side is filled with an adhesive, and the stress is applied to the adhesive force of the adhesive by curing the adhesive. This is a method of transmitting through the connecting rod 3 to generate a joining strength.
That is, when there is a gap between the connecting rod 3 and the joining insertion hole 2a on the first frame material 2 side and the adhesive is not filled, the connecting rod 3 is the first frame. Not joined to lumber 2.

When the bearing wall 1 receives a strong external force (horizontal force), the adjacent first frame members 2 tend to move so as to tilt in the same direction. When a plurality of connecting rods 3 are provided side by side in the length direction (vertical direction) of the first frame material 2 in response to such movement of the first frame material 2, adjacent first frame materials 3 are provided. It is possible to suppress the movement of 2 trying to tilt in the same direction. That is, a moment resistance joint that resists an external force is applied to the joint portion of the plurality of connecting rods 3 to the adjacent first frame material 2, and the lower structural material 6 and the upper structural material 7 are connected to each other. The bearing wall 1 provided in a state of being sandwiched between the bearing walls 1 is in a state of high toughness.
Here, the toughness refers to a property for exhibiting tenacity in which the function as a wall does not significantly deteriorate even after the bearing wall 1 is deformed by an external force, and such toughness is the first adjacent to each other. The frame material 2 is connected by a plurality of connecting rods 3, and the plurality of connecting rods 3 are secured by moment resistance joining to the adjacent first frame materials 2.

The second frame material 5 is provided at each of the upper end portion and the lower end portion of the adjacent first frame material 2, and connects the adjacent first frame materials 2 to each other.
The second frame material 5 is for a structure that is longer in the horizontal direction (horizontal direction / horizontal direction) than in the vertical direction, and is formed in a square shape in a vertical cross-sectional view. Like the first frame material 2, the second frame material 5 may be wood other than the structural laminated lumber. Further, the cross-sectional shape does not have to be square as in the first frame material 2.
The second frame member 5 may be provided not only at the upper end and the lower end of the adjacent first frame members 2, but also at an intermediate portion in the vertical direction of the adjacent first frame members 2.

A plurality of joining rods 5a for joining the both ends of the second frame material 5 and the adjacent first frame material 2 are inserted into both ends of the second frame material 5. A hole is formed. Further, among the adjacent first frame members 2, a plurality of joining rods for joining the first frame member 2 and the end portion of the second frame member 5 are located at the positions where the second frame member 5 is arranged. A plurality of joining insertion holes into which 5a is inserted are formed. These plurality of insertion holes for joining are through holes that penetrate the first frame material 2 in the left-right direction. The positions of the plurality of joining insertion holes formed in the second frame material 5 and the positions of the plurality of joining insertion holes formed in the first frame material 2 are aligned with each other. Therefore, a plurality of joining rods 5a can be inserted from the left side surface of the left first frame material 2 and the right side surface of the right first frame material 2 toward the second frame material 5 (see FIG. 7). ).
That is, the adjacent first frame member 2 and the second frame member 5 are moment-resisted joined by a plurality of joining rods 5a.

The panel material 4 is a rectangular plate material such as plywood. In such a panel material 4, the width dimension (dimension in the left-right direction) is set longer than the distance dimension between the adjacent first frame members 2, and the panel members 4 are arranged on the same vertical plane among the adjacent first frame members 2. It is provided and adhered between the front and back side surfaces 2f.
The panel material 4 may be a single large-sized material, or a plurality of panel materials 4 may be arranged vertically and provided between the adjacent first frame materials 2.
Further, the panel material 4 may be in contact with the second frame material 5 at the upper and lower ends and may be joined by adhesion.
The panel material 4 is bonded to the first frame material 2 and the second frame material 5 at the upper and lower ends by adhesion, but the present invention is not limited to this, and the panel material 4 is fixed and joined by a fixture such as a nail. May be good.
Further, when the panel materials 4 divided into a plurality of parts are provided side by side in the vertical direction, the panel materials 4 joined by adhesion and the panel materials 4 joined by the fixture may be mixed. Further, in some cases, such as a place where an opening is formed, the panel material 4 may not be partially provided.

Since the panel material 4 as described above is made of wood, it has a certain degree of tenacity, but when the bearing wall 1 receives a strong external force, it may be destroyed. Until just before the fracture occurs, the effect of reinforcing the bearing wall 1 together with the plurality of connecting rods 3 is exhibited.

The bearing wall 1 configured as described above is incorporated into a relatively large-scale wooden building such as a middle-rise / high-rise wooden building or a wooden building having a large total area. When the wooden building receives a strong external force (horizontal force) due to an earthquake, a typhoon, or the like, the bearing wall 1 tends to deform in the shearing direction. Here, since moment resistance joining is applied to the joint portion between the adjacent first frame material 2 and the plurality of connecting rods 3, the adjacent first frame material 2 and the plurality of connecting rods 3 are joined. The deformation performance of the skeleton portion of the bearing wall 1 made of the same is higher than the deformation performance of the panel material 4 itself. Therefore, if the bearing wall 1 receives an external force of a certain value or more, the panel material 4 may be damaged.
In the case of a conventionally known bearing wall, if the panel material that imparts rigidity to the bearing wall is broken, the function as the bearing wall is impaired. On the other hand, according to the present embodiment, the plurality of connecting rods 3 are arranged side by side in the length direction of the adjacent first frame members 2 and spaced apart from each other, and are adjacent to each other. Since moment resistance joining is applied to the joints of the plurality of connecting rods 3 to the one frame material 2, the skeleton of the bearing wall 1 composed of the adjacent first frame material 2 and the plurality of connecting rods 3 The toughness of the part can be improved.
Therefore, even when the adjacent first frame members 2 receive an external force, the plurality of connecting rods 3 secure and maintain a high toughness state, and resist the external force without impairing the function as the bearing wall 1. You will be able to do it. As a result, sufficient earthquake resistance can be maintained even in a relatively large-scale wooden building.

Further, since the load-bearing wall 1 further includes a panel material 4 for connecting the adjacent first frame materials 2, the load-bearing wall 1 can improve the load-bearing wall 1.
Further, the moment resistance joint applied to the joint portion of the plurality of connecting rods 3 with respect to the adjacent first frame material 2 resists the external force even after the panel material 4 is destroyed by the external force. Even after the panel material 4 is destroyed by receiving an external force, the bearing wall 1 can secure and maintain a high toughness state by the plurality of connecting rods 3.

Further, between the inner side surfaces of the joining insertion holes 2a and 2b formed at positions where a plurality of connecting rods 3 are arranged in the first frame material 2 and the outer surface of the connecting rods 3. Since a gap is formed and the gap is filled with an adhesive, when the adhesive is cured while holding the connecting rod 3, stress is applied to the adhesive force of the adhesive through the connecting rod 3. Transmit and generate joint strength. Therefore, the connecting rod 3 can be reliably moment-resistant bonded to the first frame material 2, and the skeleton portion of the bearing wall 1 composed of the adjacent first frame material 2 and the plurality of connecting rods 3. The deformation performance of the lumber can be significantly improved.

[Modification example]
The embodiment to which the present invention can be applied is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention. Hereinafter, a modified example will be described. The following modifications may be combined as much as possible. Further, in each of the following modifications, the elements common to the above-described embodiment are designated by a common reference numeral, and the description thereof will be omitted or simplified.

[Modification 1]
A single pipe 13 is used as a connecting material for the bearing wall 1A in this modified example. The single pipe 13 is a steel pipe formed in a hollow cylindrical shape, and both ends are open.
A plurality of joining insertion holes 2a into which both ends of the plurality of single pipes 13 are inserted are formed on the inner side surface 2d of the adjacent first frame members 2.

A gap may be formed between the inner surface of the insertion hole 2a for joining and the outer surface of the single pipe 13, and the gap may be filled with an adhesive, or the gap may not be formed and the difference for joining. The inner surface of the insertion hole 2a and the outer surface of the single pipe 13 may be in close contact with each other.

When a gap is formed between the inner surface of the insertion hole 2a for joining and the outer surface of the single pipe 13, and the gap is filled with an adhesive, the hollow portion of the single pipe 13 is filled with an adhesive. May enter. That is, since the adhesive also contacts the outer side surface and the inner side surface of the single pipe pipe 13 at both ends of the single pipe pipe 13, if it is cured as it is, the cylinder wall of the single pipe pipe 13 is sandwiched from the inside and outside by the adhesive. Can be done. Thereby, the joint strength of the single pipe 13 with respect to the first frame material 2 can be improved.

No gap is formed between the inner surface of the joining insertion hole 2a and the outer surface of the single pipe 13, and the inner surface of the joining insertion hole 2a and the outer surface of the single pipe 13 are in close contact with each other. If they match, it is desirable to secure a wide contact area between the inner surface of the joining insertion hole 2a and the outer surface of the single pipe 13.
When ensuring a wide contact area between the inner surface of the joining insertion hole 2a and the outer surface of the single pipe 13, the hole depth of the joining insertion hole 2a is made deeper than when an adhesive is used. May be good. Further, a protruding portion that is inserted into the end opening of the single pipe pipe 13 and is in contact with the inner side surface of the single pipe pipe 13 may be formed at the bottom of the insertion hole 2a for joining in the depth direction.
If the contact area between the inner surface of the insertion hole 2a for joining and the outer surface of the single pipe 13 can be secured widely in this way, the single pipe 13 can be attached to the first frame material 2 even if it is not bonded by an adhesive. Bond strength can be improved.
Further, instead of the joining insertion hole 2a which is not a through hole, a joining insertion hole 2b which is a through hole is formed in the first frame material 2, and a single pipe 13 having a length corresponding to the through hole is used. You may.

According to this modification, even if a relatively inexpensive single pipe 13 is used as a plurality of connecting materials for connecting the adjacent first frame materials 2, the adjacent first frame materials 2 and the plurality of single pipes are used. The toughness of the skeleton portion of the bearing wall 1A made of the pipe 13 can be improved.
Therefore, even when the adjacent first frame members 2 receive an external force, a state of high toughness can be secured and maintained by the plurality of single pipes 13, and the external force can be resisted without impairing the function as the bearing wall 1A. It becomes. As a result, it is possible to maintain sufficient earthquake resistance even in a relatively large-scale wooden building while suppressing an increase in cost and the number of parts.

[Modification 2]
A long bolt 23 is used as a connecting material for the bearing wall 1B in this modified example. In this modification, male screws (not shown) are formed at both ends of the long bolt 23 in the length direction, but it is sufficient that male screws are formed at least at one end of the long bolt 23. In the case of a pattern in which a male screw is formed only on one end of the long bolt 23 as described above, the above-mentioned glue-in rod method is adopted for the other end of the long bolt 23.
The adjacent first frame members 2 are formed with a plurality of insertion holes 2b for joining, which are through holes into which both ends of the plurality of long bolts 23 are inserted. A female screw that matches the male screw of the long bolt 23 is formed on the inner surface of the plurality of insertion holes 2b for joining.

Both ends of the long bolt 23 in this modification are set to have a length that projects laterally from the outer surface 2e of the adjacent first frame members 2 that are parallel to each other and do not face each other.
Nuts 23a are screwed into both ends of the long bolt 23 protruding from the outer surface 2e of the first frame member 2. As a result, the adjacent first frame members 2 can be sandwiched from the outside in the left-right direction toward the center side.

According to this modification, a plurality of joining insertion holes 2b into which the ends of the plurality of long bolts 23 are inserted are formed at positions of the first frame material 2 where the plurality of long bolts 23 are arranged. A female screw is formed on the inner surface of the insertion hole 2b for joining, the long bolt 23 is a rod-shaped member, and a male screw is formed at the end of the connecting member 23. Therefore, the end of the long bolt 23 Is screwed into the joining insertion hole 2b, and the inner surface of the joining insertion hole 2b and the outer surface of the long bolt 23 are in close contact with each other. Therefore, the bonding strength of the long bolt 23 to the first frame material 2 can be improved without using an adhesive. Therefore, a plurality of long bolts 23 can be reliably moment-resistant bonded to the adjacent first frame material 2, and the skeleton portion of the bearing wall 1B composed of the adjacent first frame material 2 and the plurality of long bolts 23. The deformation performance of the lumber can be significantly improved.

Further, both ends of the long bolt 23 project laterally from the outer surface 2e of the adjacent first frame members 2 which are parallel to each other and do not face each other, and nuts 23a are provided at the projecting both ends. , The long bolt 23 can be prevented from being pulled out from the joining insertion hole 2b, and the joining strength of the long bolt 23 with respect to the first frame material 2 can be further improved.
Both ends of the long bolt 23 project laterally from the outer surface 2e, and the nut 23a is provided on the outer surface 2e. However, a nut in contact with the inner side surface is provided so as to sandwich the first frame material 2 from the inner / outer surface. It may be.
Further, both ends of the long bolt 23 do not have to protrude laterally from the outer surface 2e. In that case, the nut 23a is embedded in the first frame material 2.

A slight gap is formed between the female screw formed on the inner surface of the insertion hole 2b for joining and the male screw formed on the outer surface of the long bolt 23, and the gap is filled with an adhesive. You may. As a result, fixing with screws and fixing with an adhesive can be used together, so that the joint strength of the long bolt 23 with respect to the first frame material 2 can be improved. Alternatively, instead of forming a female screw on the inner surface of the insertion hole 2b for joining, an adhesive is provided in the gap between the inner surface of the insertion hole 2b for joining and the male screw formed on the outer surface of the long bolt 23. And tightening with the nut 23a may be used in combination to improve the joint strength of the long bolt 23 with respect to the first frame material 2.

[Modification 3]
A horizontal member 33 is used as a connecting material for the bearing wall 1C in this modified example. The horizontal member 33 is a structural laminated wood that is longer in the horizontal direction (horizontal direction / horizontal direction) than in the vertical direction, and is formed in a rectangular shape in a plan view. In this embodiment, the structural laminated lumber is used as the horizontal member 33, but it may be a normal square lumber or, for example, a horizontal member made of LVL. That is, the horizontal member 33 is a wooden beam-shaped member. Further, the cross-sectional shape may be square instead of rectangular.

Among the adjacent first frame members 2, a plurality of joining insertion holes 32b, which are through holes, are provided at positions where a plurality of horizontal members 33 are arranged and both ends of the plurality of horizontal members 33 are inserted. It is formed. The plurality of insertion holes 32b for joining are formed as rectangular through holes according to the cross-sectional shape of the horizontal member 33.
The vertical and horizontal dimensions of the end cross section of the horizontal member 33 to be inserted into the joining insertion hole 32b are the inner surface of the joining insertion hole 32b when the horizontal member 33 is inserted into the joining insertion hole 32b. And the outer surface of the horizontal member 33 are set so as not to form a gap. As a result, the inner surface of the joining insertion hole 32b and the outer surface of the horizontal member 33 are in close contact with each other.

No gap is formed between the inner surface of the joining insertion hole 32b and the outer surface of the horizontal member 33, and the inner surface of the joining insertion hole 32b and the outer surface of the horizontal member 33 are in close contact with each other. If they match, it is desirable to secure a wide contact area between the inner surface of the joining insertion hole 32b and the outer surface of the horizontal member 33. Therefore, the insertion hole 32b for joining is a through hole as described above, and the horizontal member 33 is set to the length between the outer surfaces 2e of the adjacent first frame members 2.
Both end faces of the horizontal member 33 in the length direction are flush with the outer surface 2e of the adjacent first frame members 2.

According to this modification, the vertical and horizontal dimensions of the end cross section of the wooden horizontal member 33 to be inserted into the joining insertion hole 32b, which is a through hole, are the inner surface of the joining insertion hole 32b and the horizontal member. Since it is set so that no gap is formed between the outer surface at the end of 33, the inner surface of the joining insertion hole 32b and the outer surface at the end of the horizontal member 33 are in close contact with each other. do. Therefore, if a wide contact area between the inner surface of the insertion hole 2a for joining and the outer surface at the end of the horizontal member 33 is secured, the horizontal member 33 with respect to the first frame member 2 can be secured without using an adhesive. Bond strength can be improved. Therefore, the plurality of horizontal members 33 can be reliably moment-resistant bonded to the adjacent first frame members 2, and the bearing wall 1C composed of the adjacent first frame members 2 and the plurality of horizontal members 33 can be joined. The deformation performance of the skeleton part can be significantly improved.

[Modification example 4]
The panel material 4 in the above embodiment is assumed to be a rectangular plate material such as plywood, but the panel material 44 of the bearing wall 1D in this modified example is a hollow lumber for construction as shown in FIG. Panels are used.
The wooden panel for construction includes a frame body 44a formed of vertical and horizontal frame members, and face members 44b provided on at least one side surface (both front side and back side in this modification) of the frame body 44a. It is a hollow panel body having. A reinforcing bar 44c parallel to the stile material is incorporated in the frame body 44a, and a heat insulating material such as glass wool or rock wool may be further loaded.
As shown in FIGS. 8 and 9, the panel material 44, which is such a hollow wooden panel for construction, is provided so as to be bridged between the inner side surfaces 2d of the adjacent first frame material 2. Further, the panel material 44 is provided on one or both of the front side and the back side of the plurality of connecting rods 3. At this time, as shown in FIG. 9, the plurality of connecting rods 3 may be arranged so as to be offset from the axial center of the adjacent first frame members 2 to the front side or the back side. Further, it is preferable that the front and back side surfaces 2f of the adjacent first frame members 2 arranged on the same vertical surface and the surface of the panel member 44 are flush with each other.

According to the panel material 44 in this modification, since the face material 44b is adhered to and integrated with the frame body 44a, unlike the panel material 4 made of a rectangular plate material, the entire parts (frame body 44a, face material 44b, Reinforcing bar timber 44c) is designed to maintain rigidity and strength.
Further, since the panel material 44 itself is made of wood, it has a certain degree of tenacity, but when the bearing wall 1D receives a strong external force, it may be destroyed. However, since moment resistance joining is applied to the joints of the plurality of connecting rods 3 with respect to the adjacent first frame members 2, the first frame members 2 adjacent to each other and the plurality of connecting rods 3 are formed. The toughness of the skeleton portion of the bearing wall 1 can be improved.

[Modification 5]
As shown in FIG. 10, the bearing walls 1E in this modified example are arranged orthogonally via the corner portion C in a plan view, and form a square cylindrical columnar body 50 formed in a square shape in a plan view. doing.
In other words, the columnar body 50 is in a state of having bearing walls 1E on four side surfaces. More specifically, the columnar body 50 includes four first frame members 2 arranged at four corners, a connecting rod 3 and a panel member 44 provided between adjacent first frame members 2. Is configured to include. As the panel material 44, the panel material 4 made of a rectangular plate material may be adopted.

When the bearing walls 1E are arranged orthogonally via the corner portion C in a plan view, the bearing walls 1E adjacent to each other via the corner portion C share one first frame member 2. In that case, it is necessary to prevent a problem in fitting the connecting rod 3 on one bearing wall 1E and the connecting rod 3 on the other bearing wall 1E.

In FIGS. 10 and 11, the connecting rods 3 of the adjacent bearing walls 1E are arranged so as to be staggered in the vertical direction so as not to interfere with each other. With such an arrangement, it is related to the insertion depth (the length of the connecting rod 3) in which the connecting rod 3 is inserted into the joining insertion holes 2a (2b) formed in the first frame material 2. Instead, the connecting rods 3 of the adjacent bearing walls 1E can be arranged orthogonally to each other.

FIG. 12 shows a structure in which the connecting rods 3 of the adjacent bearing walls 1E are provided at the same position (height position) in the vertical direction.
That is, since the orthogonal connecting rods 3 are arranged at the same height position, the first frame material 2 is an orthogonal type including a first insertion hole 52a and a second insertion hole 52b. An insertion hole 52a is formed. The orthogonal type insertion hole 52 in FIG. 12 is formed in a cross shape in a plan sectional view, and one of the connecting rods 3 is deeply inserted into the first insertion hole 52a. Further, the other connecting rod 3 is shallowly inserted into the second insertion hole 52b, and the tip is in contact with the one connecting rod 3 inserted into the first insertion hole 52a.
If the orthogonal type insertion hole 52 is filled with an adhesive in such a state and the adhesive is cured, the stress is transmitted through the adhesive force of the adhesive and the connecting rods 3 of both, and the joining strength is increased. (Glue-in rod method).

The orthogonal insertion hole 52 shown in FIG. 12 is formed in a cross shape in a plan view, but is not limited to this, and may be formed in an L shape in a plan view, or may be flat. It may be formed in a T shape in cross section.
When it is formed in an L shape in a plan view, the length dimensions of one and the other connecting rods 3 may be the same, or the contacting ends may be cut at an angle of 45 degrees and arranged at a right angle. You may do so.
When it is formed in a T-shape in a cross-sectional view, it is possible to specify a procedure in which the connecting rod 3 to be inserted deeply is inserted first, and then the connecting rod 3 to be inserted shallowly is inserted. ..
Further, in the columnar body 50 shown in FIG. 10, when the connecting rods 3 of the adjacent bearing walls 1E are provided at the same height position, if the structure shown in FIG. 12 is adopted at the four corners, the connecting rods can be used. All the lengths of 3 can be made uniform.

According to this modification, the connecting rod 3 on one bearing wall 1E and the connecting rod 3 on the other bearing wall 1E share one first frame material 2 and the first frame material. Since it can be inserted into 2, the connecting rods 3 on the adjacent bearing wall 1E do not interfere with each other, and there is no problem when the bearing wall 1E is arranged orthogonally via the corner portion C in a plan view. ..
Further, if the bearing walls 1E are arranged orthogonally in a plan view, the bearing walls are exhibited in at least two directions, so that sufficient earthquake resistance can be maintained even in a relatively large-scale wooden building.

[Modification 6]
In this modification, as shown in FIG. 13, a plurality of bearing walls 1F that share one first frame member 2 and are adjacent to each other are provided in the same direction in a plan view. Also in the case of this modification, it is necessary to prevent a problem in fitting the connecting member 23 on one bearing wall 1F and the connecting member 23 on the other bearing wall 1E.

In FIG. 13, the connecting members 23 on the adjacent bearing wall 1F are arranged so as to be staggered in the vertical direction so as not to interfere with each other.
With such an arrangement, the connecting member 23 is adjacent to the connecting member 23 regardless of the insertion depth (length of the connecting member 23) inserted into the joining insertion hole 2a (2b) formed in the first frame member 2. The connecting members 23 on the bearing wall 1F can be arranged in the same direction in a plan view.
In particular, in this modification, the long bolt 23 is used as the connecting member 23. Therefore, both ends of the long bolts 23 project sideways because they need to be tightened with the nuts 23a, but if the long bolts 23 on the adjacent bearing wall 1F are arranged alternately up and down, the long bolts 23 interfere with each other. Since there is no mutual interaction, there is no problem in terms of fitting.

In this modified example, the long bolt 23 is used as the connecting material 23, but the present invention is not limited to this, and other connecting materials as described in the above-described embodiment and each modified example may be used. good.

[Modification 7]
In addition to the connecting materials (deformed steel bars, full-threaded bolts, single pipes, long bolts, wood horizontal members) mentioned in the above embodiments and each modification, round bars and square steel pipes (square pipes) Etc. may be appropriately adopted as a connecting material.

1 Load-bearing wall 2 First frame material 2a Insertion hole for joining 2b Insertion hole for joining 2d Inner side surface 2e Outer side surface 3 Connecting rod 4 Panel material 13 Single pipe pipe 23 Long bolt 23a Nut 32b Inserting hole for joining 33 Horizontal material

Claims (6)

The first frame material, which is adjacent to each other with a space between them,
Both ends are joined to the adjacent first frame material, and a plurality of connecting materials for connecting the adjacent first frame materials are provided.
The plurality of connecting members are arranged side by side in the length direction of the adjacent first frame members and at intervals from each other.
A feature is that a moment resistance joint that resists the external force when the adjacent first frame material receives an external force is applied to the joint portion of the plurality of connecting materials to the adjacent first frame material. Bearing wall structure. In the bearing wall structure according to claim 1,
A panel material for connecting the adjacent first frame materials is further provided.
The moment resistance joint applied to the joint portion of the plurality of connecting materials to the adjacent first frame material is characterized in that it resists the external force even after the panel material is broken by receiving the external force. Bearing wall structure. In the bearing wall structure according to claim 1 or 2,
At the position where the plurality of connecting members are arranged in the first frame material, a plurality of joining insertion holes into which the ends of the plurality of connecting members are inserted are formed.
A bearing wall structure characterized in that a gap is formed between the inner surface of the insertion hole for joining and the outer surface of the connecting member, and the gap is filled with an adhesive. In the bearing wall structure according to claim 1 or 2,
At the position where the plurality of connecting members are arranged in the first frame material, a plurality of joining insertion holes into which the ends of the plurality of connecting members are inserted are formed.
The vertical and horizontal dimensions of the end cross section of the connecting member to be inserted into the joining insertion hole are such that a gap is not formed between the inner surface of the joining insertion hole and the outer surface at the end of the connecting member. A bearing wall structure characterized by being set in such a way. In the bearing wall structure according to claim 1 or 2,
At the position where the plurality of connecting members are arranged in the first frame material, a plurality of joining insertion holes into which the ends of the plurality of connecting members are inserted are formed.
A female screw is formed on the inner surface of the insertion hole for joining.
The bearing wall structure is characterized in that the connecting member is a rod-shaped member and a male screw is formed at an end portion of the connecting member. In the bearing wall structure according to claim 5,
Both ends of the connecting member project laterally from the outer surfaces of the adjacent first frame members that are parallel to each other and do not face each other, and nuts are provided at both ends of the projecting members. Load-bearing wall structure.

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