JP6252836B2 - Wooden earthquake resistant wall - Google Patents

Description

  The present invention relates to a wooden earthquake-resistant wall formed using a wooden board.

  Conventionally, as earthquake-resistant walls (woody earthquake-resistant walls) of wooden buildings such as houses, for example, joints such as nails, bolts, wood screws, pins around wooden boards such as structural plywood, single-plate laminated material, orthogonal laminated board In many cases, a metal frame member is attached to each other (see, for example, Patent Document 1 and Patent Document 2).

  For example, as this kind of wooden earthquake-resistant wall A, as shown in FIGS. 5 and 6, a rectangular flat plate-shaped steel plate 3 is interposed on both sides 1 a and 2 a of a pair of rectangular flat plate-like wooden plates 1 and 2. There is a structure in which a pair of wooden plates 1 and 2 and a steel plate 3 are laminated. Further, the steel plate 3 is projected outward from the side portions 1a and 2a of the pair of wood plates 1 and 2 and joined to the pair of wood plates 1 and 2 with a joint 4 such as a nail, a bolt, a wood screw, or a pin. Thus, the pair of steel plates 3 is disposed as a frame material.

  Furthermore, the wooden seismic wall A constructed in this way has joint holes 5 formed through the four corners, respectively, and is joined to a building frame such as a column or beam using a joint 6 such as a bolt. Wooden earthquake-resistant walls (wooden earthquake-resistant wall units) A are joined together and installed in the frame of a building surrounded by columns and beams.

Japanese Patent Laid-Open No. 9-228548 JP 2002-161596 A

  However, in the conventional wooden earthquake-resistant wall A, as shown in FIG. 5, horizontal force (load P) such as seismic force input from the frame material (steel plate 3) to the earthquake-resistant wall main body made of wooden plates 1 and 2 is applied. Almost all is transmitted to the wooden boards 1 and 2 via the connector 4. For this reason, unless a large number of the connectors 4 are arranged, before the resistance force as the surface of the wooden plates 1 and 2 itself is sufficiently exhibited, in other words, before the shear strength of the wooden plates 1 and 2 is sufficiently exhibited, In the vicinity of the joint between the joint 4 and the wooden boards 1 and 2, cracks occur in the wooden boards 1 and 2, so that the joint between the wooden boards 1 and 2 may be broken, and the entire wooden earthquake-resistant wall A may be broken. .

  An object of this invention is to provide the wooden earthquake-resistant wall excellent in durability in view of the said situation.

  In order to achieve the above object, the present invention provides the following means.

The wooden earthquake-resisting wall of the present invention is formed by providing chamfered portions at four corners, and a pair of wooden boards disposed so as to be overlapped with each other, and a part of each chamfered part of the pair of wooden boards is exposed to form a joint portion. A steel plate disposed between the pair of wood plates while being formed, a joint for integrally joining the steel plate and the wood plate, and a joint portion of the steel plates, and the joint A stress transmitting member for transmitting a part of the external force acting on the part from the chamfered part to the wood board, and the stress transmitting member is provided in contact with each chamfered part of the pair of wood boards, An end portion other than the chamfered portion of the pair of wooden boards is formed to be exposed .

  In the wooden earthquake-resistant wall of the present invention, it is desirable that the wooden board has a recess, and the rigidity of the wooden board is adjusted according to the size, shape, number, and position of the recess.

  In the wooden earthquake-resistant wall of the present invention, compression struts (compressed bundles) are formed in the diagonal direction of the wooden board by a load (external force such as seismic force) input to the wooden board via a stress transmission member provided at the joint of the steel sheets. Can be formed. And the horizontal force (external force, load) input into a wooden earthquake-resistant wall can be disperse | distributed to a compression strut and the load transmitted in a wooden board via a connector.

  This makes it possible to reduce the load load near the joint compared to a conventional wooden earthquake resistant wall that bears the load only through the joint part, and this part causes breakage due to cracks in the wood board. Can be difficult. That is, it is possible to realize a wooden earthquake resistant wall having excellent durability.

  Moreover, in the wooden earthquake-resistant wall of the present invention, the rigidity of the wooden board can be adjusted by providing a recess in the wooden board, for example, by providing a gap in the wooden board, and buckling of the wooden board can be prevented. In other words, by adjusting the size, shape, quantity, position, etc. of the recesses (voids) provided in the wood board, the load capacity ratio of the compression strut part and the joint part is optimal for the yield strength and rigidity of the entire wooden seismic wall It becomes possible to adjust to become.

It is a top view which shows the wooden earthquake-resistant wall which concerns on one Embodiment of this invention. It is the X1-X1 arrow view figure of FIG. It is a figure which shows the state which made the wooden earthquake-resistant wall which concerns on one Embodiment of this invention into a wooden earthquake-resistant wall unit, joined several wooden earthquake-resistant wall units, and formed the earthquake-resistant wall in the building surface. It is a top view which shows the example of a change of the wooden earthquake-resistant wall which concerns on one Embodiment of this invention. It is a top view which shows the conventional wooden earthquake-resistant wall. FIG. 6 is a view taken along line X1-X1 in FIG. 5.

  Hereinafter, a wooden earthquake-resistant wall according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIGS. 1 and 2, the wooden earthquake-resistant wall B of the present embodiment is formed in an octagonal shape in plan view by providing chamfered portions 10a and 11a at four corners, and a pair of wooden boards disposed so as to overlap each other. 10 and 11 and a plurality of chamfered portions 10a and 11a of the pair of wooden plates 10 and 11 are partially exposed to form a joint portion 12 and a plurality of interposed and arranged between the pair of wooden plates 10 A part of the external force (load P) that is provided integrally with the steel plate 13, the joint 14 for integrally joining the steel plate 13 and the wooden plates 10 and 11, and the joint 12 of the steel plate 13 and acting on the joint 12. A stress transmission member 15 for transmitting the chamfered portions 10a and 11a to the wooden boards 10 and 11 is provided.

  Moreover, as each wooden board 10 and 11, plate-shaped woody materials, such as a structural plywood, a single board laminated material, an orthogonal laminated material, are used, for example. The steel plate 13 and the pair of wood plates 10 and 11 are integrally fixed using a joint 14 such as a nail, a bolt, a wood screw, or a pin. Furthermore, the wooden boards 10 and 11 may be formed by providing gaps (recesses) 16 such as grooves and holes, and adjusting the rigidity according to the size, shape, number, position, etc. of the gaps 16.

  Furthermore, the wooden earthquake-resistant wall B of the present embodiment has the four corners of the rectangular flat steel plate 13 exposed by the chamfered portions 10a, 11a of the four corners of the pair of wooden plates 10, 11, respectively. 11, a stress transmission member 15 such as a steel plate is fixed to one surface and the other surface of the exposed steel plates 10, 11 by welding, bolting, bonding or the like so as to contact the chamfered portions 10 a, 11 a. Moreover, the joint hole 17 is provided in the corner | angular part of the steel plate 13, for example, as shown in FIG. 3, connecting the corner | angular parts of the steel plate 13 of the some wooden earthquake-resistant wall B using this joint hole 17, By connecting a plurality of wooden earthquake-resistant walls (wooden earthquake-resistant wall units) B, one large earthquake-resistant wall can be formed. Of course, the seismic wall may be constructed by connecting the building hole 18 or the beam 19 to the frame using the joint hole 17 and installing one wooden seismic wall B.

  In the wooden earthquake-resistant wall B of the present embodiment having the above-described configuration, as shown in FIG. It is transmitted to the wooden boards 10 and 11 through the member 15, and a compression strut is formed by this partial load P1. Further, the remaining load P <b> 2 is transmitted to the wooden boards 10 and 11 through the joint portion between the connector 14 and the wooden boards 10 and 11.

  Thereby, compared with the conventional wooden earthquake-resistant wall A, while the burden of the junction part of the connector 14 and the wooden boards 10 and 11 becomes small, the resistance as the surface of the wooden boards 10 and 11 is fully exhibited. .

  Therefore, in the wooden earthquake-resistant wall B of the present embodiment, in addition to the conventional connector 14, a mechanism for transmitting a horizontal force (external force, load) directly to the wooden boards 10 and 11 without using the connector 14 is added. The load P can be dispersed. Thereby, it becomes possible to reduce the load burden ratio around the connector 14.

  In addition, the load P is input to the wooden boards 10 and 11 via the stress transmission member 15 attached to the chamfered portions 12 of the wooden boards 10 and 11, so that the compression struts (compressed in the diagonal direction of the wooden boards 10 and 11 are compressed). A bundle) can be formed. And the horizontal force input into the wooden earthquake-resistant wall B can be disperse | distributed into the compression strut (load P1) and the load P2 transmitted in the wooden boards 10 and 11 via the connector 14. FIG.

  This makes it possible to reliably reduce the load burden in the vicinity of the joint 14 as compared with the conventional wooden earthquake resistant wall A that bears the load P only through the joint 14 part. , 11 can be made difficult to break due to cracks. That is, it is possible to reliably realize the wooden earthquake resistant wall B having excellent durability.

  Here, if the ratio of the load burden due to the compression struts is too large, the entire wooden boards 10 and 11 may be buckled. On the other hand, in the wooden earthquake-resistant wall B of this embodiment, buckling can be prevented by providing a gap (concave portion) 16 in the wooden boards 10 and 11 to reduce the rigidity of the wooden boards 10 and 11. In addition, by adjusting the size, shape, number, position, etc. of the gaps (recesses) 16 provided in the wooden boards 10 and 11, the ratio of the load load of the compression strut part and the joint part can be adjusted to It is possible to adjust the rigidity to be optimum.

  As mentioned above, although one embodiment of the wooden earthquake-resistant wall by this invention was described, this invention is not limited to said one embodiment, In the range which does not deviate from the meaning, it can change suitably.

  The steel plate 13 according to the present invention is disposed between a pair of wood plates 10 and 11 while exposing a part from the chamfered portions 10a and 11a of the pair of wood plates 10 and 11 to form a joint portion 12. It only has to be installed. For example, as shown in FIGS. 4 (a) to 4 (d), rectangular flat steel plates 13 are installed on the left and right (FIG. 4 (a)), and installed on the top and bottom (FIG. 4 (b)). Alternatively, the rectangular plate-like steel plates 13 may be installed at the four corners (FIG. 4C), or the B-shaped steel plates 13 may be installed (FIG. 4D) to constitute the wooden earthquake resistant wall B. Even in this case, it is possible to obtain the same effect as that of the present embodiment.

  Moreover, it is only necessary that the chamfered portions 10a and 11a are formed at the four corners of the wooden boards 10 and 11, and it is not necessary to limit the shape to the octagonal shape in plan view.

DESCRIPTION OF SYMBOLS 1 Wood board 1a Side part 2 Wood board 2a Side part 3 Steel plate 4 Joint tool 5 Joint hole 6 Joint tool 10 Wood board 10a Chamfer part 11 Wood board 11a Chamfer part 12 Joint part 13 Steel plate 14 Joint tool 15 Stress transmission member 16 Recessed part (gap)
17 Joint hole 18 Column 19 Beam A Conventional wooden seismic wall B Wooden seismic wall

Claims (2)

A pair of wooden boards formed with chamfered portions at the four corners and arranged to overlap each other;
While exposing a part from each chamfered part of the pair of wooden boards to form a joint part, a steel sheet interposed between the pair of wooden boards,
A connector for integrally joining the steel plate and the wood plate;
A stress transmission member that is provided integrally with the joint portion of the steel plate and transmits a part of the external force acting on the joint portion from the chamfered portion to the wood board ;
A wooden earthquake-resistant wall, wherein the stress transmission member is provided in contact with each chamfered portion of the pair of wooden boards, and is formed by exposing ends other than the chamfered parts of the pair of wooden boards . In the wooden earthquake-resistant wall according to claim 1,
A wooden earthquake-resistant wall characterized in that the wooden board has a concave part, and the rigidity of the wooden board is adjusted by the size, shape, number, and position of the concave part.

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