JP6230331B2 - Wooden earthquake resistant wall - Google Patents

Description

  The present invention relates to a wooden earthquake resistant wall attached to a frame of a structure.

  In recent years, wooden seismic walls have been proposed as seismic walls with excellent aesthetics and workability. For example, Patent Document 1 discloses a wooden earthquake-resistant wall installed in a plane surrounded by columns and beams.

  This wooden seismic wall is fixed to the pillar and beam by filling the gap between the inner surface of the pillar and beam and the outer circumference of the wooden seismic wall with a flexible adhesive to form a deformation absorption layer. Has been. Therefore, local destruction of the wooden earthquake-resistant wall is prevented by the local deformation absorption effect of the deformation-absorbing layer, and the deformation capacity of the wooden earthquake-resistant wall can be improved.

  However, since the horizontal shear rigidity of the wooden earthquake-resistant wall of Patent Document 1 is lowered by the flexible deformation-absorbing layer, it is difficult to quickly exert strength against the horizontal external force generated in the columns and beams. .

JP 2003-314083 A

  This invention considers the fact which concerns, and makes it a subject to make horizontal shear rigidity of a wooden earthquake-resistant wall high.

  In the first aspect of the invention, the wood wall and the wood wall are bonded and joined to the frame, and until the joint breaks, shear stress transmission between the frame and the wood wall is performed by a joining force. A wooden earthquake-resistant wall having an adhesive layer that performs shear stress transmission between the frame and the wooden wall by a compression bundle formed on the wooden wall.

  In the first aspect of the invention, when the shear force generated in the frame acts on the adhesive layer, the shear stress transfer between the frame and the wooden wall is caused by the adhesive force of the adhesive layer until the adhesive layer breaks. The shearing stress that is made and transmitted to the wooden wall is borne by the wooden wall.

  In addition, when the shear force generated in the frame acts on the adhesive layer, if this adhesive layer breaks and joins, the force is transmitted by friction or meshing between the fractured surfaces of the adhesive layer that has undergone the joint breakage. A compression bundle is formed in a diagonal region of the wall (woody wall). The shear stress is transmitted between the frame and the wooden wall via the compression bundle, and the shear stress transmitted to the wooden wall is borne by the wooden wall.

  By these, the horizontal shear rigidity of a wooden earthquake-resistant wall can be made high, and intensity | strength can be exhibited at an early stage with respect to the shear force which generate | occur | produces in a frame. For example, an earthquake-resistant wall having higher shear rigidity and shear strength than a wooden earthquake-resistant wall in which a wooden wall is attached to a column beam frame by a deformation absorbing layer formed of a flexible adhesive can be formed. In addition, for example, a seismic wall having shear rigidity and shear strength equivalent to non-wood seismic elements such as RC seismic walls and steel braces can be configured.

  The invention of the second aspect is the wooden earthquake-resistant wall of the first aspect, wherein the wooden walls are formed by joining together a plurality of wooden boards arranged in the horizontal direction.

  In the invention of the second aspect, the wooden board material having a smaller size than the wooden wall can be easily manufactured. Moreover, since the wooden board | plate material with a magnitude | size smaller than a wooden wall is easy to handle, the workability of a wooden earthquake-resistant wall can be improved.

  The invention of the third aspect is the wooden earthquake-resistant wall of the first aspect, wherein the wooden walls are formed by joining together a plurality of wooden boards arranged in the vertical direction.

  In the invention of the third aspect, the wood board having a smaller size than the wood wall can be easily manufactured. Moreover, since the wooden board | plate material with a magnitude | size smaller than a wooden wall is easy to handle, the workability of a wooden earthquake-resistant wall can be improved. Furthermore, the degree of freedom in design can be increased.

  Since this invention set it as the said structure, the horizontal shear rigidity of a wooden earthquake-resistant wall can be made high.

It is a front view which shows the wooden earthquake-resistant wall which concerns on embodiment of this invention. It is a plane sectional view showing the wood wall concerning the embodiment of the present invention. It is a front view which shows the effect | action of the wooden earthquake-resistant wall which concerns on embodiment of this invention. It is a front view which shows the effect | action of the wooden earthquake-resistant wall which concerns on embodiment of this invention. It is a plane sectional view showing the formation method of the wood panel concerning the embodiment of the present invention. It is a plane sectional view showing the formation method of the wood panel concerning the embodiment of the present invention. It is a front view which shows the wooden earthquake-resistant wall which concerns on embodiment of this invention. It is side surface sectional drawing which shows the wooden wall which concerns on embodiment of this invention.

  Embodiments of the present invention will be described with reference to the drawings. First, a wooden earthquake resistant wall according to an embodiment of the present invention will be described.

  As shown in the front view of FIG. 1, the wooden earthquake-resistant wall 10 of the present embodiment includes a wooden wall 12 and an adhesive layer 14. As shown in FIG. 1 and FIG. 2 (a), which is a cross-sectional view taken along the line AA of FIG. 1, the wooden wall 12 is made by integrating a plurality of wooden boards 16 arranged side by side with an adhesive. A single wood panel 20 is provided. The wood board 16 is a member having a substantially rectangular planar shape, which is made of a single board laminated material formed by laminating and bonding wooden boards.

  As shown in FIG. 1, the wooden wall 12 has the long side direction of the wooden board 16 up and down within the surface of the column beam frame 26 as a frame composed of columns 22A and 22B and beams 24A and 24B. It is arranged to be in the direction. The columns 22A and 22B and the beams 24A and 24B are made of reinforced concrete.

The wooden wall 12 is a gap (hereinafter referred to as “gap”) between the outer edge portion 28 (outer peripheral surface 30) of the wooden panel 20 and the inner surface 32 of the column beam frame 26 (columns 22A and 22B and beams 24A and 24B). The adhesive layer 14 is formed by densely filling and curing the epoxy resin adhesive G to (S ₁ )) to form an adhesive layer 14, thereby being bonded and joined to the column beam frame 26. The size of the gap S ₁ is such that the shear rigidity of the adhesive layer 14 is equal to or greater than the shear rigidity of the wood board 16.

  As shown in the front view of FIG. 3A and the front view of FIG. 4A, the adhesive layer 14 generates a shearing force F in the column beam frame 26 due to an earthquake, and this shearing force F is applied to the adhesive layer 14. Until the adhesive layer 14 is bonded and broken (when the adhesive layer 14 is not broken), the shear stress transmission between the column beam frame 26 and the wood panel 20 is bonded to the adhesive layer 14. By force.

  Further, as shown in the front view of FIG. 3B and the front view of FIG. 4B, the adhesive layer 14 generates a shearing force F on the column beam frame 26 due to an earthquake, and this shearing force F is bonded. When the adhesive layer 14 is bonded and broken when acting on the layer 14 (in a state where the adhesive layer 14 is bonded and broken), force is transmitted by friction or engagement between the broken surfaces of the bonded and broken adhesive layer 14. Compressed into the diagonal area of the wooden earthquake-resistant wall 10 (the area on the diagonal line of the wooden panel 20 including the adhesive layer 18 and the area of the adhesive layer 14 on the diagonally upper and lower extension of this area). A bundle P is formed. And the shearing stress transmission between the column beam frame 26 and the wood panel 20 is performed by this compression bundle P.

  In the present embodiment, “bonding force” refers to the shear strength of the adhesive layer 14, the adhesive force of the adhesive layer 14 to the outer peripheral surface 30 of the wood panel 20, and the attachment of the adhesive layer 14 to the inner surface 32 of the column beam frame 26. It means the force to attach the wood panel 20 to the column beam frame 26 by the applied force. “Joint failure” means that the adhesive layer 14 is sheared (cohesive failure of the adhesive layer 14), and the adhesive layer 14 is adhered. The outer peripheral surface 30 of the wooden panel 20 is peeled off (cohesive failure of the wooden panel 20), and the inner surface of the adhesive layer 14 and the outer peripheral surface 30 of the wooden panel 20 are cut off at the interface (adhesion to the outer peripheral surface 30 of the wooden panel 20). The adhesion failure of the layer 14), the inner surface 32 of the reinforced concrete column beam frame 26 is peeled off with the adhesion layer 14 adhered (cohesive failure of the concrete forming the column beam frame 26), Means that Tachikireru at the interface between the inner surface 32 of the outer surface Column Frames 26 of the adhesive layer 14 (adhesive failure of the adhesive layer 14 against the inner surface 32 of the beam-column Frame 26). That is, the shearing force F generated in the column beam frame 26 and acting on the adhesive layer 14 causes these breaking strengths (cohesive failure strength of the adhesive layer 14, cohesive failure strength of the wood panel 20, adhesion to the outer peripheral surface 30 of the wood panel 20. Bonded when the minimum value among the bond fracture strength of the layer 14, the cohesive fracture strength of the concrete forming the column beam frame 26, and the bond fracture strength of the adhesive layer 14 with respect to the inner surface 32 of the column beam frame 26 is reached. Destruction occurs.

  The wood panel 20 can be formed by the following method, for example. First, the wooden board 16 is arranged at a predetermined position in the surface of the column beam frame 26, and the end of the wooden plate 16 is joined to the column beam frame 26 by the adhesive layer 14 (not shown).

Next, as shown in the plan cross-sectional view of FIG. 5 (a), the gap between the wooden plate 16 (hereinafter, "gap S _2" and) on one surface of the wooden plate 16 so as to close the, paste, etc. The weather tape 40 is attached by

Next, as shown in FIG. 5 (a), by filling the adhesive in the gap S ₂ between the wood plate material 16 forming the adhesive layer 18 as shown in (arrow 36) FIG. Then, the wood layers 16 are joined and integrated by the adhesive layer 18 to form a wood panel 20. The size of the gap S ₂ is the shear stiffness of the adhesive layer 18 is sized to be more shear stiffness of wood plate material 16.

  Next, the operation and effect of the wooden earthquake resistant wall according to the embodiment of the present invention will be described.

  In the wooden earthquake-resistant wall 10 of the present embodiment, as shown in FIGS. 3A and 4A, when the shear force F generated in the column beam frame 26 acts on the adhesive layer 14, the adhesive layer 14 Until the joint breaks, shear stress is transmitted between the column beam frame 26 and the wood panel 20 (wood wall 12) by the joining force of the adhesive layer 14, and is transmitted to the wood panel 20 (wood wall 12). The shear stress is borne by the wood panel 20 (wood wall 12).

  Further, as shown in FIGS. 3B and 4B, when the shearing force F generated in the column beam frame 26 acts on the adhesive layer 14, if the adhesive layer 14 breaks down, the joint breaks down. Force is transmitted by friction or meshing of the fracture surfaces of the adhesive layer 14, and the diagonal region of the wooden earthquake-resistant wall 10 (the diagonal region of the wooden panel 20 including the adhesive layer 18 and the region of this region). The compressed bundle P is formed in a region that is combined with the region of the adhesive layer 14 on the diagonally upper and lower extension. Then, shear stress is transmitted between the column beam frame 26 and the wood panel 20 (wood wall 12) via the compression bundle P, and the shear stress transmitted to the wood panel 20 (wood wall 12) is It is borne by the panel 20 (woody wall 12).

  Therefore, the horizontal shear rigidity of the wooden earthquake resistant wall 10 can be increased by the principle of these (FIGS. 3A and 3B and FIGS. 4A and 4B), and is generated in the column beam frame 26. The strength can be exhibited at an early stage against the shearing force. For example, a seismic wall having higher shear rigidity and shear strength than a wooden seismic wall in which a wooden wall is attached to a column beam frame by a deformation absorbing layer formed of a flexible adhesive can be formed. Further, for example, a seismic wall having shear rigidity and shear strength equivalent to non-wood seismic elements such as a reinforced concrete seismic wall, a steel seismic wall, a reinforced concrete brace, and a steel brace can be configured.

  Furthermore, in the wooden earthquake-resistant wall 10 of this embodiment, an earthquake-resistant wall excellent in aesthetics and workability can be constructed by using a wooden wall (woody wall 12) as the earthquake-resistant wall.

  Moreover, in the wooden earthquake-resistant wall 10 of this embodiment, the wooden wall 12 is formed by connecting a plurality of wooden boards 16 arranged side by side in the horizontal direction, and the wooden board 16 having a size smaller than that of the wooden wall 12 is Can be easily manufactured. Moreover, since the wooden board | plate material 16 smaller than the wooden wall 12 is easy to handle, the workability of the wooden earthquake-resistant wall 10 can be improved.

  Furthermore, since the shear rigidity of the adhesive layer 18 that joins the wooden boards 16 is equal to or higher than the shear rigidity of the wooden boards 16, the wooden panel 20 can be a member that is integrated in all in-plane directions. . Thereby, the shear rigidity and shear strength equivalent to the wood panel formed with one wood board material can be given to the wood panel 20.

  The embodiment of the present invention has been described above.

  In this embodiment, an example in which the wooden board 16 is a single board laminated material is shown, but other wooden parts may be used. For example, the wooden wall 12 (woody panel 20) may be configured to have a wood material such as lumber, laminated wood, laminated material, and plywood. It is preferable to use the wooden plate 16 as a single plate laminated material because the wooden earthquake-resistant wall 10 can be an earthquake-resistant wall having sufficient shear rigidity and shear strength. In this case, it is more preferable to use a single-plate laminated material in a vertical direction because the high shear rigidity and shear strength of the wooden earthquake-resistant wall 10 can be expected.

  In this embodiment, the wood wall 12 is joined by bonding the outer edge portion 28 (outer peripheral surface 30) of the wood panel 20 to the pillars 22A and 22B and the inner surfaces 32 of the beams 24A and 24B by the adhesive layer 14. However, the wooden wall 12 may be joined to one of the pillars 22A and 22B and the beams 24A and 24B. That is, the wooden wall 12 may be joined only to the pillars 22A and 22B, or the wooden wall 12 may be joined only to the beams 24A and 24B. Further, the wooden wall 12 may be arranged like a stud between the upper and lower beams and the upper and lower floor slabs.

  Further, in the present embodiment, the example in which the adhesive layer 14 is formed by the epoxy resin adhesive G is shown. However, until the adhesive layer 14 is bonded and broken, the column beam frame 26 and the wood panel are bonded by the bonding force of the adhesive layer 14. When the adhesive layer 14 is bonded and broken, the shear stress transmission between the column beam frame 26 and the wooden panel 20 is performed via the compression bundle P formed on the wooden earthquake resistant wall 10. If performed, the adhesive layer 14 may be formed by another type of adhesive. For example, polymer cent mortar, non-shrink mortar or the like may be used as an adhesive. It is preferable to use an adhesive that can increase the shear rigidity of the adhesive layer 14.

Further, in the present embodiment, the size of the gap S ₁ in which the adhesive layer 14 is formed, the shear stiffness of the adhesive layer 14, an example in which a magnitude equal to or larger than the shear stiffness of wood plate material 16, the clearance S The size of ₁ is the shear stress between the column beam frame 26 and the wood panel 20 due to the bonding force of the adhesive layer 14 until the adhesive layer 14 is bonded and broken in the adhesive layer 14 formed by the adhesive used. When transmission is performed and the adhesive layer 14 is bonded and broken, shear stress transmission between the column beam frame 26 and the wooden panel 20 is performed via the compression bundle P formed on the wooden earthquake-resistant wall 10, and the adhesive layer (it can be filled with an adhesive into the gap S ₁₎ 14 construction capable of to size. That is, the material for forming the adhesive layer 14 and the thickness of the adhesive layer 14 are set so that high shear rigidity can be obtained. As a method for increasing the shear rigidity of the adhesive layer 14, a method of making the adhesive layer 14 thin or a method of mixing aggregate or the like can be considered. For example, when the adhesive is an epoxy resin adhesive G, the size of the gap S1 can be about ₁ to 25 mm. Further, for example, when mixed with aggregate or the like to form the adhesive layer 14 is an epoxy resin adhesive G, and shear modulus of the adhesive layer 14 is increased, it is possible to make the gap S ₁ and about 100mm .

  Furthermore, in the present embodiment, as shown in FIG. 2A, an example in which the wooden wall 12 is configured to include a single wooden panel 20 is illustrated, but the wooden wall 12 is opposed to the out-of-plane direction. You may make it comprise the wood panel 20 arrange | positioned in multiple layers. For example, as shown in the plan cross-sectional views of FIGS. 2B to 2E, the wood wall 12 is configured to have a wood panel 20 in which two or three layers are disposed facing each other in the out-of-plane direction. Alternatively, the wooden wall 12 may be configured to include the wooden panel 20 in which four or more layers are arranged facing each other in the out-of-plane direction. In this case, the joint 42 (adhesive layer 18) of the wood board 16 may be disposed so as to constitute a joint joint or may be disposed so as to constitute a horse joint.

In the case where the wooden wall 12 is configured to have a wooden panel 20 that is arranged in multiple layers in the out-of-plane direction so as to face each other, for example, as shown in the order of FIGS. 20 can be formed. Further, for example, when the arrangement of the joints 42 (adhesive layer 18) of the wood board 16 is made into a structure of the joints, the multilayered wood panel 20 is simultaneously formed as shown in FIGS. can do. That is, if the wood board 16 is arranged so that the gap S ₂ (joint 42) of the wood board 16 coincides, the adhesive is injected (arrow 36) from the gap S ₂ of the wood board 16 constituting the outermost layer. The wood boards 16 constituting the multiple layers of the wood panel 20 can be joined at a time.

  When the wooden wall 12 is configured to have a wooden panel 20 that is arranged in multiple layers in the out-of-plane direction so that the wooden walls 12 face each other, the wooden panels 20 of each layer may or may not be bonded with an adhesive or the like. Alternatively, they may be arranged separately.

  Moreover, you may make it form the wooden board | plate material 16 shown by this embodiment by joining the wooden board | plate which divided | segmented multiple in the up-down direction with an adhesive agent.

  Furthermore, in this embodiment, although the example which formed the wooden wall 12 by connecting the wooden board | plate material 16 arrange | positioned by arranging two or more in the horizontal direction was shown, the number of the wooden board materials 16 arrange | positioned plurally arranged in the horizontal direction is unlimited. Alternatively, the wood panel 20 may be constituted by one wood board 16. Further, as shown in FIG. 8A, which is a front view of FIG. 7 and a BB cross-sectional view of FIG. 7, a wood board 16 in which a plurality of (two or more) wood panels 20 are arranged in the vertical direction is arranged. You may form by connecting. In the case of this configuration, the bonding force of the adhesive layer 18 that connects the wooden boards 16 arranged above and below so that the compression bundle P is formed on the wooden earthquake-resistant wall 10 causes the wooden panel 20 to be attached to the column beam frame 26. The bonding strength of the bonding layer 14 to be bonded is made larger.

  Also in the configuration of the wooden earthquake-resistant wall 10, the wooden board 16 having a smaller size than the wooden wall 12 can be easily manufactured. Moreover, since the wooden board | plate material 16 smaller than the wooden wall 12 is easy to handle, the workability of the wooden earthquake-resistant wall 10 can be improved. Furthermore, the degree of freedom in design can be increased.

  Moreover, also in the structure of this wooden earthquake-resistant wall 10, you may make it comprise the wooden wall 12 which has the wooden panel 20 which arranged the multilayered structure in the out-of-plane direction facing each other. For example, you may make it show in the side sectional view of Drawing 8 (b)-(e). In this case, the seam 42 may be arranged so as to constitute a tuber joint as shown in FIGS. 8B and 8C, or as shown in FIGS. 8D and 8E. You may make it comprise a joint. Further, the wooden board 16 may be formed by joining a plurality of wooden boards divided in the horizontal direction with an adhesive or the like.

  Moreover, the wooden earthquake-resistant wall 10 of this embodiment may be applied to a new building or may be applied to a repaired building. That is, the wooden earthquake-resistant wall 10 of the present embodiment may be installed on the frame in the earthquake-proof repair work of the building.

  Moreover, in this embodiment, although the example which formed the column beam frame 26 (column 22A, 22B and beam 24A, 24B) as a frame with reinforced concrete was shown, the member which comprises a frame has another structure. But you can. For example, a steel frame, a steel-framed reinforced concrete structure, or a CFT structure (Concrete-Filled Steel Tube) may be used. The frame may have another structure. For example, the frame may be composed of columns and floor slabs.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment at all, Of course, in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

10 Wooden earthquake-resistant wall 12 Wooden wall 14 Adhesive layer 16 Wooden board material 26 Column beam frame (frame)
P compression bundle

Claims (3)

A wooden wall,
Wherein formed between the outer peripheral surface and the Frame of the inner surface of the wooden wall bonded by bonding the wood wall to the Frame, bonding shear stress transmission between until junction breakdown the Frame and the wooden wall An adhesive layer that performs shearing stress transmission between the frame and the wooden wall by a compressive bundle formed on the wooden wall when the joint is broken by force;
Wooden earthquake resistant wall. A wooden wall,
The wooden wall is bonded and joined to the frame, and shear stress transmission between the frame and the wooden wall is performed by a joining force until the joint is broken, and when the joint is broken, the shear between the frame and the wooden wall is performed. An adhesive layer for performing stress transmission by a compression bundle formed on the wooden wall;
Have
The wood walls, that are formed by joining a wood plate which is arranged a plurality transversely woody shear walls. A wooden wall,
The wooden wall is bonded and joined to the frame, and shear stress transmission between the frame and the wooden wall is performed by a joining force until the joint is broken, and when the joint is broken, the shear between the frame and the wooden wall is performed. An adhesive layer for performing stress transmission by a compression bundle formed on the wooden wall;
Have
The wood walls, woody shear walls that are formed by joining a wood plate which is arranged plurality in the vertical direction.

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