JP6530959B2 - Seismic wall structure - Google Patents

Description

  The present invention relates to a seismic wall structure.

  Patent Document 1 discloses a technique related to a wooden shear wall having a deformation absorbing layer. In this prior art, in a plane surrounded by columns and beams, a wood seismic wall is arranged with a gap of a deformation absorbing layer between its outer periphery and the inner surface of the columns and beams, It is characterized in that it is filled with an adhesive having a Young's modulus lower than that of the seismic wall, and the wooden seismic wall is fixed to the column and beam.

  However, since the bonding strength of the adhesive decreases in the event of a fire, the technique of fixing the wooden shear wall to the columns and beams with the adhesive may not be used in buildings where high fire resistance is required.

JP 2003-314083 A

  In view of the above-mentioned facts, it is an object of the present invention to join a horizontal member and a wood wall while securing higher fire resistance performance than in the case of joining with an adhesive.

In the first aspect , a wood wall disposed between the upper and lower horizontal members is joined to the horizontal members with a cement-based solidifying material.

In the first aspect , since the wood wall installed between the upper and lower horizontal members is joined to the horizontal member with the cement-based solidifying material, the wood wall is compared with the configuration in which the wood wall is joined with the adhesive. A decrease in bonding strength at the time of fire is suppressed or prevented. That is, high fire resistance performance is secured as compared with the configuration in which the wood wall is joined to the horizontal member by the adhesive.

In the second aspect , asperities are formed on at least one of the upper end portion and the lower end portion of the wood wall.

In the second embodiment , since the unevenness is formed on at least one of the upper end portion and the lower end portion of the wood wall, the bonding area is increased as compared with the flat case where the unevenness is not formed. Therefore, shear force is effectively transmitted between the wood wall and the horizontal member.

In a third aspect , the horizontal member is a reinforced concrete structure, and at least one of the upper end and the lower end of the wood wall is embedded in the horizontal member.

In the third aspect , since at least one of the upper end and the lower end of the wood wall is embedded in the horizontal member, compared to the case where both the upper end and the lower end are not embedded, Shear force is more effectively transmitted between them.

  ADVANTAGE OF THE INVENTION According to this invention, a horizontal member and a wood wall can be joined, ensuring fire resistance performance higher than the case where it joins with an adhesive agent.

It is a front view which shows the earthquake-resistant wall structure of 1st embodiment. (A) is a longitudinal cross-sectional view taken along line 2-2 of FIG. 1, (B) is a longitudinal cross-sectional view when the side surface of the wood wall and the frame are joined with a fastener, (C) is It is a longitudinal cross-sectional view corresponding to (A) of the earthquake-resistant wall structure of the 3rd modification of one Embodiment. (A) is an enlarged longitudinal cross-sectional view along the X direction of the shear wall structure of the first modified example of the first embodiment, (B) is an enlarged longitudinal cross-sectional view in the case of providing a stud, (C) These are enlarged longitudinal cross-sectional views along the Y direction of the shear wall structure of the 2nd modification of 1st embodiment. It is a front view which shows the earthquake-resistant wall structure of the 3rd modification of 1st embodiment. It is a front view which shows the earthquake-resistant wall structure of the 4th modification of 1st embodiment. It is a front view which shows the earthquake-resistant wall structure of 2nd embodiment. (A) is a longitudinal cross-sectional view along the 7A-7A line of FIG. 6, (B) is a longitudinal cross-sectional view in the case where the frame portion is not embedded in the frame. It is a front view which shows the earthquake-resistant wall structure of 3rd embodiment. It is a front view which shows the earthquake-resistant wall structure of the 1st modification of 3rd embodiment. (A) is a perspective view which shows the principal part of the earthquake-resistant wall structure of the 1st modification of 3rd embodiment shown in FIG. 9, (B) is a metal plate in the internal peripheral surface of a main body side recessed part and a frame side recessed part. It is a perspective view at the time of sticking, (C) is a perspective view which shows a butterfly-shaped wood piece member. It is a front view which shows the earthquake-resistant wall structure of the 2nd modification of 3rd embodiment. It is an expansion perspective view which shows the main body side engaging part of the main-body part of the earthquake-resistant wall structure of the 2nd modification of 3rd embodiment. It is an enlarged perspective view which shows the principal part of the earthquake-resistant wall structure of the 3rd modification of 3rd embodiment. It is the partial notch front view which shows the earthquake-resistant wall structure of 4th embodiment. It is a perspective view which shows the principal part of the earthquake-resistant wall structure of 4th embodiment. Fig. 16 is a longitudinal sectional view taken along line 16-16 of Fig. 14; It is an enlarged longitudinal cross-sectional view along the Y direction at the time of making a deck with a truss buried in a beam side convex part of a beam, and reinforcing it. It is a front view which shows the earthquake-resistant wall structure at the time of providing a stud in a frame. It is a front view of the state which installed the lower body in the lower beam in the construction process of the earthquake-resistant wall structure of 4th embodiment. FIG. 21 is a front view of a state in which the main body is installed on the lower body in a post-process of FIG. 19 and joined by a cross screw. FIG. 21 is a front view of a state in which left and right columns and upper beams are arranged in a post-process of FIG. 20 and a lower body is installed on the upper beams. It is a disassembled perspective view of a precast beam, a precast pillar, a middle upper member, and a lower cross member. It is a front view of a state where a precast left and right pillar and a beam are joined in a construction process of a seismic wall structure of a second embodiment, and an intermediate upper member and a lower cross member are installed. FIG. 24 is a front view of a state in which concrete is cast in a post-process of FIG. 23; FIG. 25 is a front view of a state in which the main body is inserted into the frame and joined by a cross screw in a post-process of FIG. 24; FIG. 7B is a partially enlarged front view of FIG. 7A viewed from the Y direction.

First Embodiment
The earthquake resistant wall structure according to the first embodiment of the present invention will be described. In each of the drawings, the vertical direction is indicated by arrow Z, the out-of-plane direction is indicated by arrow Y, and the horizontal direction perpendicular to the vertical direction (arrow Z direction) and the out-of-plane direction (arrow Y direction) is indicated by arrow X.

(Construction)
As shown in FIG. 1, the earthquake-resistant wall structure 100 of this embodiment has a frame 50 composed of a beam 10 and a column 20 as an example of a reinforced concrete horizontal member using concrete as an example of cement-based solidifying material and , And a wood wall 110 installed in the surface of the frame 50. Further, a slab 18 (see FIG. 2A) is supported by the beam 10.

  As shown in FIG. 2A, in the beam 10, a main beam 12 extending in the beam direction, a beam shear reinforcement 14 surrounding the periphery of the main beam 12, and a substantially U-shaped reinforcement 11 , Is arranged. Although not shown, in the reinforced concrete column 20 (see FIG. 1), a column main bar extending in the column direction and a column shear reinforcement bar surrounding the column main bar are arranged.

  In the present embodiment, the wood wall 110 is made of cross laminated timber (CLT). In addition, the wood wall 110 may be comprised by wood panels other than a cross-laminated board. For example, it may be made of a single-plate laminated material (LVL (Laminated Veneer Lumber)). In addition, this is the same as the wood wall demonstrated by 2nd embodiment or subsequent ones. Further, the wood wall 110 of the present embodiment is configured of a plurality of plate members 111. In addition, the wood wall 110 of a one-piece structure may be sufficient.

  As shown in FIG. 1, the upper end 110A, the lower end 110C, and the left and right side ends 110B, 110D of the wood wall 110 are concave inward in the in-plane direction and convex outward in the in-plane direction. A plurality of wall-side convex portions 114 are alternately formed. In addition, the wall side recessed part 112 and the wall side convex part 114 of this embodiment are made into substantially triangular shape by front view. Further, on the inner wall surface of the frame 50 (the beams 10 and the columns 20), a plurality of triangular frame side convex parts 34 and frame side concave parts 32 with which the wall side concave part 112 and the wall side convex part 114 engage are formed. There is.

  As shown in FIG. 2B, a metal fastener 40 having an L-shaped cross section may be joined to the side surface of the wooden wall 110 and the frame 50.

  Here, the arrangement and the pitch of the wall-side concave portion 112 and the wall-side convex portion 114 shown in FIG. 1 and the corresponding structure-side convex portions 34 and the structure-side concave portions 32 are an example and not limited thereto. For example, in the present embodiment, the wall-side concave portions 112 are formed at the upper and lower end portions of the respective plate members 111 constituting the wood wall 110, but the present invention is not limited thereto. The wall side convex part 114 may be formed in the upper and lower ends of each board material 111, and the wall side crevice 112 and the wall side convex part 114 may be formed in the upper and lower ends of each board material. .

  Further, the shapes of the wall-side concave portion 112 and the wall-side convex portion 114 and the corresponding structure-side convex portion 34 and the structure-side concave portion 32 are not limited to triangles, and may be rectangular. It may be shaped.

  Moreover, the recessed part and convex part which mutually engage with the side part on either side of each board | plate material 111 may be formed.

(Action and effect)
Next, the operation and effects of the present embodiment will be described.

  The wood wall 110 installed in the reinforced concrete structure 50 is joined to the structure 50 by the wall side concave portion 112 and the wall side convex portion 114 engaging with the structure side convex portion 34 and the structure side concave portion 32. .

  Therefore, as compared with the case where the end face 110E (refer to FIG. 3C) of the wood wall 110 is flat, the joint area is increased, so the shear force is effectively transmitted between the wood wall 110 and the frame 50. Be done. In addition, when a shear force acts on the frame 50 at the time of an earthquake, a band-shaped compression bundle is formed diagonally from one corner on the diagonal of the wood wall 110 toward the other corner. Then, the shear force is transmitted between the wood wall 110 and the frame 50 by the compression bundle.

  Further, as compared with the configuration in which the wood wall is joined to the structure 50 with the adhesive whose bonding strength is reduced at the time of fire, the reduction of the bonding strength at the time of fire is suppressed or prevented, and high fire resistance performance is secured.

  In addition, although the wall side recessed part 112 and the wall side convex part 114 are formed in each of upper end part 110A of the wood wall 110, lower end part 110C, and side end parts 110B and 110D on either side, it is not limited to this. The wall-side concave portion 112 and the wall-side convex portion 114 may not be formed on the left and right side end portions 110B and 110D of the wood wall 110, and the wall-side concave portion 112 and the wall side concave portion 112 and the lower end portion 110C may be formed. The wall side convex part 114 should just be formed.

  That is, at least one of the upper end 110A and the lower end 110C of the wood wall 110 may be joined to the frame 50. Moreover, this is the same as that of the aseismatic wall structure after the modification and 2nd embodiment which are demonstrated after this.

[Modification]
Next, a modification of the present embodiment will be described.

(First modification)
In the earthquake-resistant wall structure 101 of the first modified example shown in FIG. 3 (A), the inner wall surface 50A of the frame 50 is flat without unevenness. Then, in the gap 36 between the wall-side concave portion 112 of the wood wall 110 and the inner wall surface 50A of the frame 50, the filler 45 made of cement-based solidifying material such as grout or mortar is filled.

  Note that, as shown in FIG. 3B, a stud 42 that protrudes into the gap 36 may be provided on the frame 50.

  Here, the wall-side concave portion 112 and the wall-side convex portion 114 may not be formed on the wood wall 110 and may be flat. In this case, an end face 110E (see FIG. 3C) of the wood wall 110 is installed with a gap from the inner wall surface 50A of the frame 50, and the filler 45 is filled in the gap and joined.

(Second modification)
In the earthquake-resistant wall structure 102 of the second modification shown in FIG. 3C, an angle 44 having a U-shaped cross section (groove shape) is joined to the inner wall surface 50A of the frame 50 by a stud 46. The angle 44 is a member constituting the frame 50.

  In the wood wall 110, the wall-side concave portion 112 and the wall-side convex portion 114 are not formed. The lower end 110C (and the upper end 110A and the left and right side ends 110B, 110D, not shown) of the wood wall 110 is placed in the angle 44 and filled with the filler 45. In the wood wall 110, the wall-side concave portion 112 and the wall-side convex portion 114 (see FIG. 1) may be formed.

(Third modification)
In the seismic wall structure 103 of the third modification shown in FIGS. 4 and 2C, the upper end 110A, the lower end 110C, and the left and right side ends 110B and 110D of the wood wall 110 are the beams 10 and columns of the frame 50. Buried in 20 (embedded). The left and right side ends 110B and 110D of the wood wall 110 may not be embedded in the column 20 of the frame 50, and at least one of the upper end 110A and the lower end 110C is embedded in the beam 10 of the frame 50. Just do it.

  Further, as in the second modification, the wall-side concave portion 112 and the wall-side convex portion 114 may not be formed in the wood wall 110.

(4th modification)
In the earthquake-resistant wall structure 104 of the fourth modified example shown in FIG. 5, the hardware 70 is joined to the inner wall surface 50A of the frame 50 by the studs 72. The metal object 70 of this modification has a shape (a so-called shape like a so-called upper half (or lower half) of a butterfly) whose width in the vertical direction becomes shorter from the both ends in the X direction toward the center. In addition, a wall-side recess 113 is formed in the wood wall 110 and engaged with the hardware 70. The hardware 70 is a member that constitutes the frame 50.

Second Embodiment
The earthquake resistant wall structure according to the second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected to the member same as 1st embodiment and its modification, and the overlapping description is abbreviate | omitted.

(Construction)
As shown in FIG. 6, the earthquake-resistant wall structure 200 of the present embodiment includes a frame 50 made of reinforced concrete beams 10 and columns 20, and a wood wall 210 installed in the plane of the frame 50. It is configured. The wood wall 210 is configured of a woody rectangular main body 220 and a wood frame 230 provided around the main body 220.

  In the frame portion 230, a wall-side concave portion 112 and a wall-side convex portion 114 are formed, and the wall-side convex portion 114 is embedded (only incorporated) in the structure 50 (the beam 10 and the column 20). In the present embodiment, as shown in FIG. 7A, the main body 220 is joined to the frame 230 by the cross screw 202. In addition, as shown in FIG. 26, the cross screw 202 may be driven obliquely in front view. That is, as shown in FIGS. 6 and 26, the cross screw 202 may be driven at an angle with respect to each of the X direction and the Y direction. By thus driving the cross screw 202 obliquely, the cross screw 202 effectively resists the load from the X direction and the Y direction. The cross screw 202 is not an essential member. Also, the frame portion 230 may be a veneer laminate (LVL) or a cross-laminated board (CLT).

As shown in FIG. 7A, in the beam 10 of the frame 50 of the present embodiment, beam reinforcement bars 16 extending in the vertical direction are arranged. The beam reinforcement bars 16 are arranged such that the upper portions 16A are overlapped on the outer side in the out-of-plane direction of the beam shear reinforcement bars 14, and extend to a position where the lower end portions 16B overlap the frame portions 230. In addition, the shape of the beam reinforcement bar 16 is not limited to this, and may not be arranged if necessary.
(Action and effect)
Next, the operation and effects of the present embodiment will be described.

  The frame portion 230 of the wood wall 210 installed in the reinforced concrete structure 50 is joined to the structure 50 by the wall side convex portion 114 being buried in and engaged with the structure 50.

  Therefore, as compared with the configuration in which the wood wall is joined to the structure 50 with the adhesive whose bonding strength decreases at the time of fire, the reduction of the bonding strength at the time of fire is suppressed or prevented, and high fire performance is secured.

  In addition, shear force is effectively transmitted between the wood wall 210 and the frame 50. When a shearing force acts on the frame 50 at the time of an earthquake, a band-shaped compression bundle is formed obliquely from one corner on the diagonal of the wood wall 210 toward the other corner. Then, a shear force is transmitted between the wood wall 210 and the frame 50 by this compression bundle.

  In addition, even if the main body 220 of the wood wall 210 is damaged during an earthquake, it is possible to restore the resistance by replacing the main body 220.

  As shown in FIG. 7B of the second embodiment, the frame 230 may not be embedded in the frame 50 (the beam 10 and the column 20). In this case, as in the first modified example of the first embodiment shown in FIGS. 3A and 3B, the gap 36 between the wall-side recess 112 of the wood wall 210 and the inner wall surface 50A of the frame 50 is filled. Fill the material 45. Further, as shown in FIG. 7B, a substantially U-shaped reinforcing bar 17 may be used.

  Further, the structure of the second modified example and the fourth modified example of the first embodiment may be applied to the joining of the frame portion 230 and the frame 50.

(Construction direction)
Next, an example of the construction method of the present embodiment will be described.

  In the present example, as shown in FIG. 25, the frame portion 231 is not provided with the wall-side concave portion 112 and the wall-side convex portion 114 (see FIG. 4). Further, as shown in FIGS. 22 and 23, the frame portion 231 is provided with anchor bolts 440 (see also FIGS. 15 and 16).

  The reinforced concrete beams 10 and columns 20 constituting the structure 50 shown in FIG. 25 are made of precast (precisely, an intermediate portion 37 etc. of the beams 10 to be described later is driven at the site). In addition, the beam 10 is hit at the site between the left beam 33 and the right beam 35 with the left beam 33 and the right beam 35 (see also FIG. 22) protruding in the X direction from the connection 30. And an intermediate portion 37 to be provided. Further, although the upper portion 33A of the left beam portion 33 and the upper portion 35A of the right beam portion 35 are arranged as shown in FIGS. 22 and 23, concrete is to be cast at the site.

  As shown in FIG. 22 to FIG. 25, the frame portion 231 is composed of left and right longitudinal members 250, an upper left lateral member 252, an upper right lateral member 254, an intermediate upper lateral member 256 and a lower lateral member 258. The longitudinal member 250 is joined to a precast pillar 20 in advance. The upper left lateral member 252 is joined to the precast left beam 33 in advance, and the upper right lateral member 254 is joined to the precast right beam 35 in advance. In addition, the middle upper cross member 256 and the lower cross member 258 are joined to the beam 10 when casting concrete on site.

  First, as shown in FIG. 23, the left and right columns 20 and the beams 10 are joined. In addition, as shown in FIG. 22, the connection part 30 which the left beam part 33 and the right beam part 35 protrude from the upper side is joined to the upper end part 20U of the pillar 20. As shown in FIG. Next, the middle upper side horizontal member 256 and the lower side horizontal member 258 are installed, concrete is casted as shown in FIG. 24, and the frame portion 231 is joined to the column 20 and the beam 10. Then, as shown in FIG. 25, the main body 220 is inserted into the frame 231 from the out-of-plane direction, and the main body 220 is joined to the frame 231 by the cross screw 202 (see also FIGS. 7 and 26).

Third Embodiment
The earthquake resistant wall structure according to the third embodiment of the present invention will be described. The same members as those of the first embodiment and the second embodiment including the modification are denoted by the same reference numerals, and the overlapping description will be omitted.

(Construction)
As shown in FIG. 8, the earthquake-resistant wall structure 300 of the present embodiment is configured of a frame 50 and a wood wall 310 installed in the plane of the frame 50. The wood wall 310 is configured of a wood body portion 320 and a wood frame portion 330 provided around the body portion 320.

  In the frame portion 330, the outer peripheral portion 330A is embedded in the frame 50 (the beam 10 and the column 20). In addition, the structure of 1st embodiment and a 2nd embodiment including a modification is applicable for joining to frame part 330 and frame 50.

  On the upper end, lower end and left and right side ends of the main body portion 320, a plurality of concave main body side concave portions 322 and plural convex main body side convex portions 324 are formed alternately in the in-plane direction. It is done. In addition, the main body side recessed part 322 and the main body side convex part 324 of this embodiment are made into rectangular shape. Further, on the inner wall surface of the frame portion 330, a plurality of rectangular frame side convex portions 334 and frame side concave portions 332 with which the main body side concave portion 322 and the main body side convex portion 324 are engaged are formed.

(Action and effect)
Next, the operation and effects of the present embodiment will be described.

  Also in this embodiment, it has the same operation and effect as the second embodiment. Furthermore, in the present embodiment, since the main body side concave portion 322 and the main body side convex portion 324 of the main body portion 320 are engaged with the frame side convex portion 334 and the frame side concave portion 332 of the frame portion 330, the main body portion 320 and the frame portion Shear forces are effectively transmitted between them.

[Modification]
Next, a modification of the present embodiment will be described.

(First modification)
In the seismic wall structure 301 of the modified example shown in FIG. 9, a wood wall 311 is installed in the plane of the frame 50. The wood wall 311 is constituted by a wood body portion 321 and a wood frame portion 331 provided around the body portion 321 and having an outer peripheral portion 331E embedded in the frame 50. An air gap 353 is formed at the corner of the frame portion 331.

  As shown in FIG. 9 and FIG. 10A, a plurality of concave main body side concave portions 323 are formed in the in-plane direction at the upper end portion, the lower end portion and the left and right side end portions of the main body portion 320. A frame-side recess 333 is formed on the inner wall surface of the frame 331 at the same position as the main-body-side recess 323.

  Then, a cubic wood piece member 350 is fitted in a space portion 335 (see FIG. 9) formed with the main body side concave portion 323 and the frame side concave portion 333.

  Below, the effect | action and effect of this modification are demonstrated.

  At the time of an earthquake, the strength is determined by being embedded in the wood piece member 350 of the main body portion 321 and the frame portion 331 so that the wood piece member 350 is damaged first. If it demonstrates from another viewpoint, this modification is a structure which prevents the damage by the penetration by the main-body part 321 and the frame part 331, and carries out a ductile fracture by the penetration resistance of the wood piece member 350. FIG. Thus, after the earthquake, the load resistance is restored by replacing only the damaged wood piece member 350.

  In addition, a gap 353 is formed at the joint between the wood wall 311 and the structure 50 to which a shear force is transmitted by a compression bundle formed diagonally from one corner on the diagonal of the wood wall 311 toward the other corner. Thus, the destruction of the frame 50 due to the concentration of excessive shear force at the corners of the frame 50 is prevented.

  In addition, the wood piece member 350 is not limited to cube shape. For example, it may be a triangular shape in a front view, or may be a so-called butterfly type in which the width in the vertical direction becomes shorter from the both ends toward the central portion as shown in FIG. The shapes of the main body side recess 323 and the frame side recess 333 are appropriately matched to the shape of the wood piece member 350.

  Further, as shown in FIG. 10B, a metal plate 354 may be attached to the inner peripheral surfaces of the main body side concave portion 323 and the frame side concave portion 333. By sticking the metal plate 354 to the inner peripheral surfaces of the main body side concave portion 323 and the frame side concave portion 333 as described above, the penetration of the wood piece member 350 is suppressed, and the yield strength is improved. Moreover, the deformation is concentrated only on the wood piece member 350.

  Although illustration is omitted, the air gap 353 may not be formed at the corner of the frame portion 331. In addition, the frame portion 331 may be configured by four members 331A, 331B, 331C, and 331D in the upper, lower, left, and right. In this case, the frame 353A outside the air gap 353 may not be provided.

(Second modification)
In the seismic wall structure 302 of the second modified example shown in FIG. 11, a wood wall 312 is installed in the plane of the frame 50. The wood wall 312 includes a wood body portion 340 and a wood frame portion 352 provided around the body portion 340 and having an outer peripheral portion 352A embedded in the frame 50. Also, the main body portion 340 is configured of five pieces of an upper portion 341, a lower portion 342, a side portion 343, a side portion 344, and a central portion 345.

  At the upper end portion, the lower end portion, and the left and right side end portions of the main body portion 340, a main body side engaging portion 360 is formed. Further, on the inner peripheral surface of the frame portion 352, a frame side engaging portion 368 with which the main body side engaging portion 360 is engaged is formed.

  As shown in FIG. 12, in the main assembly side engaging portion 360 of the main body portion 340, the convex portions 362A and the convex portions 362B having a half thickness of the plate thickness do not overlap in the Y direction (plate thickness direction), respectively. It is provided alternately along the X direction.

  Further, although not shown, the convex portion 362A and the convex portion 362B having a half thickness of the plate thickness are similarly heavy in the Y direction (plate thickness direction) in the frame side engaging portion 368 of the frame portion 352 as well. In order to prevent this, they are provided alternately along the X direction.

  Then, the convex portion 362A of the frame side engaging portion 368 of the frame portion 352 is engaged between the convex portion 362A and the convex portion 362A of the main body side engaging portion 360 of the main body portion 340, and the main body side engaging portion 360 The convex portion 362B of the frame side engaging portion 368 is engaged between the convex portion 362B and the convex portion 362B.

  Here, the main body side engaging portion 360 and the frame side engaging portion 368 can not be engaged by moving the main body portion 340 in the out-of-plane direction with respect to the frame portion 352. Thus, in the present embodiment, as described above, the main body portion 340 is configured of the upper portion 341, the lower portion 342, the side portions 343 and 344, and the central portion 345.

  Then, first, the side portions 343 and 344 are slid and fitted in the X direction (left direction or right direction) as indicated by the arrow X1. Thereafter, the upper portion 341 and the lower portion 342 are slid in the Z direction (upward or downward) as indicated by the arrow Z1 and fitted. Finally, the central portion 345 is fitted out of the plane.

  The shape of the central portion 345 is not limited to the rectangular shape. For example, it may be a triangular shape, or may be a so-called butterfly type in which the width in the vertical direction decreases from the both ends toward the center. Depending on the shape of the central portion 345, the upper portion 341, the lower portion 342, and the side portions 343 and 344 are also appropriately shaped.

  In addition, the main body 340 may be divided into two in the thickness direction. When the main body 340 is divided in the thickness direction, two sheets can be fitted in the out-of-plane direction.

(Third modification)
The wood wall 313 of the earthquake-resistant wall structure 303 of the third modification shown in FIG. 13 is a main body 370 and a wood frame provided around the main body 370 and embedded in the frame 50 (see FIG. 11 etc.) And a section 380.

  At the end of the main body portion 370, a main body side convex portion 374 convex in the out-of-plane direction and a main body side concave portion 372 concave in the out-plane direction are formed. Further, the frame portion 380 is formed with a frame side convex portion 384 which is concave in the out-of-plane direction and a frame side concave portion 382 which is convex in the out-of-plane direction.

  The main body side concave portion 372 and the main body side convex portion 374 of the main body portion 370 are engaged with the frame side convex portion 384 and the frame side concave portion 382 of the frame portion 380 in the out-of-plane direction. And are joined.

Fourth Embodiment
The earthquake-resistant wall structure concerning 4th embodiment of this invention is demonstrated. In addition, the same code | symbol is attached | subjected to the member same as 1st embodiment-3rd embodiment including a modification, and the overlapping description is abbreviate | omitted.

(Construction)
As shown in FIG. 14, the earthquake-resistant wall structure 400 of the present embodiment is configured of a frame 50 made of reinforced concrete beams 10 and columns 20, and a wood wall 410 installed in the plane of the frame 50. It is done. The wood wall 410 is composed of a wood body 420 and a wood lower body 430.

  A main body side convex portion 424 and a main body side concave portion 422 are formed in the upper end portion and the lower end portion of the main body portion 420. Further, at the upper end portion of the lower body 430, a lower side convex portion 434 and a lower side concave portion 432 which engage with the main body side convex portion 424 and the main body side concave portion 422 at the lower end portion of the main body portion 420 are formed.

  In the upper beam 10, a beam-side concave portion 412 and a beam-side convex portion 414 which engage with the main body side convex portion 424 and the main body side concave portion 422 at the upper end portion of the main body portion 420 are formed. U-shaped reinforcing bars 416 are arranged in the beam-side convex portion 414 of the beam 10. In addition, in the beam-side convex portion 414 of the beam 10, a deck with a truss (fellow deck) 490 shown in FIG.

  As shown in FIGS. 14, 15 and 16, the lower end 430 C of the lower body 430 of the wood wall 410 is embedded in the lower beam 10.

  As shown in FIGS. 15 and 16, a recessed portion 436 is formed in the lower recess 432 of the lower body 430. Then, an anchor bolt 440 fixed to the beam 10 is provided so that the head portion 442 is installed in the recessed portion 436.

  Further, as shown in FIG. 16, a metal clasp 470 is joined to the main body 420 and the lower body 430 with a screw 472.

  As shown in FIG. 14, the left and right end portions 410B and 410D of the wood wall 410 (the main body 420 and the lower body 430) are embedded in the pillar 20.

(Action and effect)
Next, the operation and effects of the present embodiment will be described.

  Also in this embodiment, it has the same operation and effect as the first to third embodiments.

  Further, in the present embodiment, since the main body side concave portion 422 and the main body side convex portion 424 of the main body portion 420 are engaged with the lower side convex portion 434 and the lower side concave portion 432 of the lower body 430, the main body portion 420 and the lower portion Shear force is effectively transmitted to and from the body 430.

  It should be noted that the wood wall 410 may be configured by the upper body and the main body 420 in a shape in which the lower body 430 is upside down, and the beam-side recess 412 and the beam-side protrusion 414 may be formed in the lower beam 10 .

(Construction method)
Next, an example of the construction method of the present embodiment will be described.

  In this example, as shown in FIG. 20, a lower body of the wood wall 411 in which a main body side convex portion 424 and a main body side concave portion 422 (see FIG. 14) are formed in the main body portion 421 of the wood wall 411. The lower side convex part 434 and the lower side concave part 432 (refer FIG. 14) are not formed in 431. FIG. Further, the main body portion 421 and the lower body 431 constituting the wood wall 411 are joined by the cross screw 202 (see also FIG. 7A, FIG. 7B and FIG. 26). The lower body 431 is provided with an anchor bolt 440 (see FIGS. 15 and 16). Further, in the present example, as shown in FIG. 19, lug screws 203 are provided on the side portion and the upper end portion of the main body portion 421. Note that the lag screw 203 may not be provided.

  First, as shown in FIG. 19, after arranging the rebars of the columns 20 and the beams 10 and providing a mold (not shown), the lower body 431 is installed on the lower beams 10. The concrete of the lower beam 10 is cast and the lower body 431 is joined to the beam 10. As shown in FIG. 20, the main body 421 of the wood wall 411 is placed on the lower body 431, and the main body 421 is joined to the lower body 431 with the cross screw 202. As shown in FIG. 21, after arranging the left and right columns 20 and the upper beam 10 and arranging a mold (not shown), the lower body 431 is installed on the upper beam 10. And although illustration is abbreviate | omitted, the concrete of the pillar 20 and the beam 10 is put in place, and the main-body part 421 and the lower body 431 are joined to the pillar 20 and the beam 10.

<Others>
The present invention is not limited to the above embodiment.

  For example, when there is a possibility that the wood wall may buckle, for example, when the wood wall is long in the lateral direction or when the wood wall receives a large axial force, as shown in FIG. In this figure, the studs 21 are structured to divide the wood wall 117 into a wood wall 115 and a wood wall 115. However, although not shown in the drawings, a structure may be employed in which the stud 21 is inserted into the wood wall and the wood 21 sandwiches the stud 21 from both sides in the out-of-plane direction. The studs 21 may or may not be connected to the upper and lower beams 10. Also, a plurality of studs 21 may be provided. Further, the material of the studs 21 is not particularly limited. In addition, although the example which provided the stud 21 in the 3rd modification (refer FIG. 4) of 1st embodiment was demonstrated here like FIG. 18, the stud 21 is similarly similarly carried out to other embodiment and modification. May be provided. Further, in FIG. 18, the side end of the wood wall 115 is embedded in the stud 21, but may not be embedded.

  Further, for example, in the above-described embodiment, the frame 50 configured by the reinforced concrete beam 10 and the column 20 is used, but the present invention is not limited to this. For example, the frame constituting the upper or lower part of the frame 50 may be a slab instead of the beam 10. In addition, it may be a steel frame or a wooden frame other than reinforced concrete, for example.

  Further, for example, in the above embodiment, the wood wall is installed in the frame, but the present invention is not limited to this. A wood wall is installed outside the construction surface (between upper and lower beams, between upper and lower slabs and between upper and lower beams and slabs) where either or both of the left and right columns are absent, A wood wall may be joined to a slab.

  The point is that a wood wall installed on a horizontal member such as a beam or a slab may be joined to the horizontal member with a cement-based solidifying material. The cement-based solidifying material is a solidifying material containing cement such as grout, concrete, mortar, and fiber-reinforced concrete.

  In addition, the direction of wood grain of each woody member and the direction of lamination of laminated materials and laminated materials are not specified.

  In addition, the plurality of embodiments and the modifications described above can be implemented in combination as appropriate. For example, the joint structure of the main body portion of the wood wall and the frame portion or the lower body described in the second embodiment and the modification thereof may be applied to the joint structure of the wood wall and the frame. Furthermore, the present invention can be implemented in various aspects without departing from the scope of the present invention.

10 beams (an example of horizontal member)
Reference Signs List 50 frame 100 seismic wall structure 101 seismic wall structure 102 seismic wall structure 103 seismic wall structure 104 seismic wall structure 110 wooden wall 117 wooden wall 200 seismic wall structure 210 wooden wall 300 seismic wall structure 301 seismic wall structure 302 seismic wall structure 303 seismic wall Structure 310 Wood wall 311 Wood wall 312 Wood wall 313 Wood wall 400 Seismic wall structure 410 Wood wall 411 Wood wall

Claims (7)

A wood wall installed between the upper and lower horizontal members is joined to the horizontal members with a cement-based solidifying material ,
An unevenness is formed on at least one of the upper end and the lower end of the wood wall.
Seismic wall structure. The horizontal member is made of reinforced concrete,
At least one of the upper end and the lower end of the wood wall is embedded in the horizontal member,
The seismic wall structure according to claim 1. The wood wall is
A rectangular main body,
A frame provided around the main body,
have,
The seismic wall structure according to claim 1 or 2.   A main body side concave portion and a main body side convex portion are formed in the main body portion,
  The frame portion is formed with a frame side convex portion and a frame side concave portion which engage with the main body side concave portion and the main body side convex portion.
  The seismic wall structure according to claim 3.   A main body side recess is formed in the main body portion,
  In the frame portion, a frame side recess is formed at the same position as the main body side recess,
  A wood piece member is fitted in a space formed by the main body side recess and the frame side recess.
  The seismic wall structure according to claim 3.   The wood wall is
  A rectangular main body,
  A rectangular lower body provided below the main body;
  Have
  A main body side convex portion and a main body side concave portion are formed at a lower end portion of the main body portion,
  The upper end portion of the lower body is formed with a lower side convex portion and a lower side concave portion which engage with the main body side convex portion and the main body side concave portion,
  The seismic wall structure according to claim 1 or 2.   The wood wall is
  A rectangular main body,
  A rectangular upper body provided on the upper side of the main body;
  Have
  A main body side convex portion and a main body side concave portion are formed at an upper end portion of the main body portion,
  The lower end portion of the upper body is formed with an upper side convex portion and an upper side concave portion which engage with the main body side convex portion and the main body side concave portion,
  The seismic wall structure according to claim 1 or 2.

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