Wall structure and construction method of wall structure

Abstract

To provide a wall structure with excellent structural performance and a construction method of the wall structure.SOLUTION: Wall structure has a wooden earthquake-resistant wall 3 which is made by using wooden boards 31, and the wooden boards 31 positioned on the front side and the back side of the wooden earthquake-resistant wall 3 are arranged so that the board surfaces face each other. The upper and lower ends of the wooden boards 31 on the front and back of the wooden earthquake-resistant wall 3 are connected to each other by bolts, and on both the front and back sides of the wooden earthquake-resistant wall 3, multiple wooden boards 31 are arranged side by side in the width direction of the wooden earthquake-resistant wall 3. The wooden boards 31 on the front and back of the wooden earthquake-resistant wall 3 are arranged with their positions unaligned in the width direction of the wooden earthquake-resistant wall 3, the wooden boards 31 on either the front or back of the wooden earthquake-resistant wall 3 are connected to other wooden boards 31 by bolts.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a wall structure, a construction method of the wall structure, and the like.

Background Art

[0002] In recent years, there have been an increasing number of cases where wood-based board materials such as CLT (Cross Laminated Timber) and LVL (Laminated Veneer Lumber) are fitted into frames of steel frame structures (S structures) or reinforced concrete structures (RC structures) and used as wood seismic walls.

[0003] As an example, Patent Document 1 describes providing, within a plane surrounded by a frame, a wood seismic wall formed by arranging two wood-based boards such that their board surfaces face each other and connecting these wood-based boards.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Currently, in such a wall structure, further improvement in structural performance is desired. In this regard, in Patent Document 1, the positions of the wood-based boards on the front and back of the wood seismic wall correspond. Just arranging n wood seismic walls side by side within a plane surrounded by a frame only allows each wood seismic wall to function independently against an external force, and the rigidity of the entire wood seismic wall is only n times the rigidity of one wood seismic wall.

[0006] The present invention has been made in view of the above-described problems, and an object thereof is to provide a wall structure excellent in rigidity, a construction method of the wall structure, and the like.

Means for Solving the Problems

[0007] The first invention for achieving the aforementioned objective is a wall structure having a wall body formed using wood-based board material, wherein the wood-based board material located on the front and back sides of the wall body is arranged so that the board surfaces face each other, the upper and lower ends of the wood-based board material on the front and back sides of the wall body are connected by a connecting member, a plurality of the wood-based board material is arranged in a line in the width direction of the wall body on both the front and back sides of the wall body, the wood-based board material on the front and back sides of the wall body is arranged with a staggered position in the width direction of the wall body, and the wood-based board material on one side of the front and back sides of the wall body is connected to the plurality of wood-based board material on the other side by the connecting member. The wall is surrounded by a frame having columns and beams, a connecting plate protrudes from the beam toward the wall, the connecting plate is sandwiched between the front and back wooden boards of the wall, and the connecting member penetrates the connecting plate, thereby joining the wall and the beams of the frame. This wall structure is characterized by the following features. The second invention is a wall structure having a wall body formed using wood-based board material, characterized in that the wood-based board material located on the front and back sides of the wall body is arranged so that the board surfaces face each other, the upper and lower ends of the wood-based board material on the front and back sides of the wall body are connected by a connecting material, a plurality of the wood-based board material is arranged in a line in the width direction of the wall body on both the front and back sides of the wall body, the wood-based board material on the front and back sides of the wall body is arranged with a staggered position in the width direction of the wall body, one of the wood-based board material on the front and back sides of the wall body is connected to the other plurality of wood-based board material by the connecting material, and a gasket or sealing material is placed in the gap provided between adjacent wood-based board material in the width direction of the wall body. The third invention is a wall structure having a wall body formed using wood-based board material, characterized in that the wood-based board material located on the front and back sides of the wall body is arranged so that the board surfaces face each other, the upper and lower ends of the wood-based board material on the front and back sides of the wall body are connected by a connecting member, a plurality of the wood-based board material is arranged in a line in the width direction of the wall body on both the front and back sides of the wall body, the wood-based board material on the front and back sides of the wall body is arranged with a staggered position in the width direction of the wall body, one of the wood-based board material on the front and back sides of the wall body is connected to the other plurality of wood-based board material by the connecting member, and a board is arranged between the wood-based board material on the front and back sides of the wall body over the entire length in the width direction and height direction of the wall body. The fourth invention is a wall structure having a wall body formed using wood-based board material, wherein the wood-based board material located on the front and back sides of the wall body is arranged so that the board surfaces face each other, the upper and lower ends of the wood-based board material on the front and back sides of the wall body are connected by a connecting member, a plurality of the wood-based board material is arranged in the width direction of the wall body on both the front and back sides of the wall body, the wood-based board material on the front and back sides of the wall body is arranged with a staggered position in the width direction of the wall body, one of the wood-based board material on the front and back sides of the wall body is connected to the other plurality of wood-based board material by the connecting member, the wall body is surrounded by a frame having columns and beams, reinforcing bars protruding from the frame are inserted into holes in the wall body formed by grooves on the opposing surfaces of the wood-based board material on the front and back sides of the wall body, and the adhesive material which is the connecting member is filled.

[0008] In this invention, multiple wooden panels are arranged on the front and back of a wall with their positions offset, and the wooden panels on the front and back of the wall are connected by connecting members. As a result, a single wall can be constructed that deforms as a whole using these wooden panels, providing a wall structure with excellent rigidity.

[0009] First invention This allows the wall to resist external forces applied to a structure with a frame of columns and beams, enabling it to function effectively as a seismic wall.

[0010] Furthermore, the first invention This allows for the connection of the wall and beam using connecting members, and during construction, two wooden boards can be moved from the out-of-plane direction of the frame to sandwich the connecting plate, thus simplifying the construction of the wall structure.

[0011] Third Invention This allows for partitioning for fire prevention and sound insulation purposes using boards.

[0012] It is also desirable that a slip-preventing material be provided between the front and back wooden panels of the wall to prevent the front and back wooden panels from shifting. This improves the integrity of the wood panels on both sides.

[0013] before It is also desirable that the end portion of the recording hole on the frame side is widened, a cylindrical body is disposed in the widened portion, a part of the axial direction of the cylindrical body is accommodated in a recess formed on the surface of the frame on the side of the wall body, the reinforcing bar is passed through the cylindrical body, and the cylindrical body and the recess are filled with a solidifying material. The fourth In the invention, joining the wall body and the frame with the above-mentioned adhesive and reinforcing bars but is possible, and the wooden boards on the front and back sides of the wall body are integrated by an adhesive. Further, it is also possible to substantially increase the diameter of the reinforcing bar with the above-mentioned cylindrical body and solidifying material and make it bear a greater shearing force.

[0014] The 5 invention is a construction method of a wall structure having a wall body formed of wooden boards, comprising: a step (a) of arranging the wooden boards located on the front side and the back side of the wall body so that the plate surfaces face each other; and a step (b) of connecting the upper and lower end portions of the wooden boards on the front and back sides of the wall body with a connecting material. In both the front and back sides of the wall body, a plurality of the wooden boards are arranged side by side in the width direction of the wall body, the wooden boards on the front and back sides of the wall body are arranged with a shift in the width direction of the wall body, and one of the wooden boards on the front and back sides of the wall body is connected to the other plurality of the wooden boards and the connecting material The wall is surrounded by a frame having columns and beams, a connecting plate protrudes from the beam toward the wall, the connecting plate is sandwiched between the front and back wooden boards of the wall, and the connecting member penetrates the connecting plate, thereby joining the wall and the beams of the frame. This is a construction method of a wall structure characterized by the above. The sixth invention is a method for constructing a wall structure having a wall body formed using wood-based boards, comprising the steps of (a) arranging the wood-based boards located on the front and back sides of the wall body so that their board surfaces face each other, and (b) connecting the upper and lower ends of the wood-based boards on the front and back sides of the wall body with a connecting material, wherein a plurality of the wood-based boards are arranged side by side in the width direction of the wall body on both the front and back sides of the wall body, the wood-based boards on the front and back sides of the wall body are arranged with a staggered position in the width direction of the wall body, one of the wood-based boards on the front and back sides of the wall body is connected to the other plurality of wood-based boards with the connecting material, and a gasket or sealant is placed in the gap provided between adjacent wood-based boards in the width direction of the wall body. The seventh invention is a method for constructing a wall structure having a wall body formed using wood-based boards, comprising the steps of (a) arranging the wood-based boards located on the front and back sides of the wall body so that their board surfaces face each other, and (b) connecting the upper and lower ends of the wood-based boards on the front and back sides of the wall body with a connecting member, wherein a plurality of the wood-based boards are arranged in the width direction of the wall body on both the front and back sides of the wall body, the wood-based boards on the front and back sides of the wall body are arranged with a staggered position in the width direction of the wall body, one of the wood-based boards on the front and back sides of the wall body is connected to the other plurality of wood-based boards with the connecting member, and a board is arranged between the wood-based boards on the front and back sides of the wall body over the entire length in the width direction and height direction of the wall body. The eighth invention is a method for constructing a wall structure having a wall body formed using wood-based boards, comprising the steps of (a) arranging the wood-based boards located on the front and back sides of the wall body so that their board surfaces face each other, and (b) connecting the upper and lower ends of the wood-based boards on the front and back sides of the wall body with a connecting material, wherein a plurality of the wood-based boards are arranged in the width direction of the wall body on both the front and back sides, the wood-based boards on the front and back sides of the wall body are arranged with a staggered position in the width direction of the wall body, one of the wood-based boards on the front and back sides of the wall body is connected to the other plurality of wood-based boards with the connecting material, the wall body is surrounded by a frame having columns and beams, reinforcing bars protruding from the frame are inserted into holes in the wall body formed by grooves on the opposing surfaces of the wood-based boards on the front and back sides of the wall body, and the adhesive material which is the connecting material is filled. The 5~8 invention is a construction method of the wall structure of the first ~4 invention.

[0015] In the step (a), after arranging one of the wooden boards on the front and back sides of the wall body, the operation of overlapping and arranging the other wooden board on a part in the width direction of the wooden board may be repeated in the width direction of the wall body. Thereby, the construction of the wall structure becomes easy.

Effect of the Invention

[0016] According to the present invention, it is possible to provide a wall structure excellent in rigidity and a construction method of the wall structure and the like.

Brief Description of the Drawings

[0017] [Figure 1] A view showing the wall structure 1. [Figure 2] A view showing a horizontal cross-section of the wooden seismic wall 3. [Figure 3] A view showing the joint portion 4. [Figure 4] A view for explaining the construction method of the wall structure 1. [Figure 5] A view showing the configuration of the wooden board material 31 and the bolt 42. [Figure 6] An example of the construction method of the wall structure 1. [Figure 7] An example of the arrangement of the wooden board material 31. [Figure 8] A view showing the wooden seismic wall 3a. [Figure 9] A view showing the wooden seismic wall 3b. [Figure 10] A view showing the wall structure 10 and the wooden seismic wall 30. [Figure 11] A view showing the wooden seismic wall 30a. [Figure 12] A view for explaining the construction method of the wooden seismic wall 30a.

Embodiments for Carrying Out the Invention

[0018] Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

[0019] (1. Wall structure 1) FIG. 1 is a view showing a wall structure 1 according to an embodiment of the present invention. The wall structure 1 has a frame 2 and a wooden seismic wall 3 surrounded by the frame 2. The frame 2 and the wooden seismic wall 3 are joined at a joint portion 4 using a joining metal 41, bolts 42, a solidifying material 44, and the like.

[0020] Frame 2 is a frame-like structure having columns 21 and beams 22. In this embodiment, the columns 21 and beams 22 are reinforced concrete (RC) members, but they may also be made of steel-reinforced concrete (SRC), steel, or other materials.

[0021] The wooden seismic wall 3 is a wall structure formed using wooden boards 31. Wooden boards such as CLT and LVL can be used for the wooden boards 31. CLT and LVL are well-known and will not be explained further.

[0022] (2.Wood shear wall 3) Figure 2 shows a horizontal cross-section of the wooden seismic wall 3. In the wooden seismic wall 3, the wooden boards 31 located on the front and back sides of the wooden seismic wall 3 are arranged so that their board surfaces face each other.

[0023] Note that the front side of the wooden seismic wall 3 refers to one of the two sides in the out-of-plane direction of the wooden seismic wall 3, and the back side of the wooden seismic wall 3 refers to the other of the two sides in the out-of-plane direction of the wooden seismic wall 3. The out-of-plane direction of the wooden seismic wall 3 corresponds to the vertical direction in Figure 2.

[0024] In the wooden seismic wall 3, multiple wooden panels 31 are arranged in the width direction of the wooden seismic wall 3 on both the front and back sides. Note that "width" corresponds to the span length between the columns 21.

[0025] In this embodiment in particular, except for both ends in the width direction of the wooden seismic wall 3, wooden boards 31 of approximately the same width L are used, and the wooden boards 31 on the front and back of the wooden seismic wall 3 are arranged in a staggered pattern, offset by half the width L.

[0026] A gap equal to the thickness of the connecting plate 412 (described later) is provided between the front and back wooden panels 31 of the wooden seismic wall 3. Additionally, gaps are provided between adjacent wooden panels 31 in the width direction of the wooden seismic wall 3, and gaskets 33 are placed in these gaps.

[0027] The gasket 33 is placed along the entire length of the wooden seismic wall 3 in the height direction for the purpose of sound insulation and heat insulation. The gasket 33 can be attached to the wooden board material 31 located behind the gap (on the inside side of the wooden seismic wall 3) with adhesive or the like. However, the gasket 33 may be replaced with a seal, and the gasket 33 can be omitted.

[0028] (3.Joint part 4) Figure 3 shows the joint 4 between the beam 22 of frame 2 and the upper end of the wooden seismic wall 3, and is a cross-sectional view of the joint 4 perpendicular to the beam axis direction.

[0029] At joint 4, the beam 22 and the wooden seismic wall 3 are joined using connecting hardware 41 and bolts 42, and a hardening material 44 such as mortar is filled into the gap between the beam 22 and the wooden seismic wall 3.

[0030] The connecting hardware 41 includes a base plate 411, a connecting plate 412, legs 413, etc.

[0031] The base plate 411 is a steel plate installed along the surface of the beam 22 on the side facing the wooden seismic wall 3. The leg portion 413 is fixed to the surface of the base plate 411 facing the beam 22 and embedded in the concrete of the beam 22. Various steel materials such as anchor bolts can be used for the leg portion 413.

[0032] The connecting plate 412 is a steel plate material (perforated steel plate) having holes 4121. The connecting plate 412 is fixed to the surface of the base plate 411 on the side facing the wooden seismic wall 3, and is positioned so that the plate surface faces in the in-plane direction of the wooden seismic wall 3.

[0033] The wooden panel 31 has a through hole 311. The through hole 311 penetrates the wooden seismic wall 3 in the out-of-plane direction (corresponding to the left-right direction in Figure 3). A recess 312 is formed on the outer surface of the wooden seismic wall 3 at the position corresponding to the tip of the through hole 311.

[0034] The connecting plate 412 protrudes from the beam 22 towards the wooden seismic wall 3 and is sandwiched between the wooden boards 31 on the front and back of the wooden seismic wall 3. The wooden boards 31 are positioned so that the positions of the through holes 311 are aligned with the positions of the holes 4121 in the connecting plate 412, and the through holes 311 in both wooden boards 31 and the holes 4121 in the connecting plate 412 communicate with each other in the out-of-plane direction of the wooden seismic wall 3.

[0035] Bolts 42, which are connecting members, are inserted through these holes, and nuts 43 are tightened onto both ends of the bolts 42 that protrude into the recesses 312 of both wooden boards 31. This connects the upper ends of the wooden boards 31 on the front and back of the wooden seismic wall 3 with the connecting plate 412 in between, and joins the beam 22 and the wooden seismic wall 3. The nuts 43 and both ends of the bolts 42 are contained within the recesses 312 of the wooden boards 31 and do not protrude outward from the outer surface of the wooden seismic wall 3.

[0036] In this embodiment, the connecting plate 412 is provided so as to extend continuously along the entire span of the beam 22 (see Figure 1), but it is also possible to provide it only where necessary, with gaps in the span of the beam 22. The solidifying material 44 is filled along the entire span of the beam 22 to transfer stress between the frame 2 and the wooden seismic wall 3. However, the solidifying material 44 may be omitted in some cases.

[0037] The above describes the joint 4 between the upper end of the wooden shear wall 3 and the upper beam 22, but similar details are also used for the joint 4 between the lower end of the wooden shear wall 3 and the lower beam 22. The joints 4 between the left and right ends of the wooden shear wall 3 and the left and right columns 21 also have similar details, although it is possible not to connect the left and right ends of the wooden shear wall 3 to the columns 21. However, connecting to the columns 21 increases the unity between the wooden shear wall 3 and the frame 2, which is preferable in terms of load-bearing capacity and rigidity.

[0038] (4. Construction method for wall structure 1) When constructing the wall structure 1, as shown in Figure 4(a), the connecting hardware 41 is fixed to the frame 2 (beam 22 in the example of Figure 4(a)) in a predetermined position when the frame 2 is constructed. Then, the wooden seismic wall 3 is formed in the area enclosed by the frame 2.

[0039] At this point, one of the wooden panels 31 on either the front or back of the wooden seismic wall 3 is moved from the out-of-plane direction as shown by arrow a in Figure 4(b), positioned in the predetermined location, and temporarily fixed to the joint plate 412. This temporary fixing can be done, for example, by using the holes 4121 in the joint plate 412 and bolts or the like.

[0040] In this embodiment, the other wooden panel 31 of the front and back sides of the wooden seismic wall 3 is also moved from the out-of-plane direction as shown by arrow a in Figure 4(c), and the wooden panels 31 on the front and back sides of the wooden seismic wall 3 are positioned so as to sandwich the connecting plate 412. The temporary fastening mentioned above is released beforehand.

[0041] As shown in Figure 4(c), the positions of the through-holes 311 in the front and back wooden panels 31 of the wooden seismic wall 3 correspond to the positions of the holes 4121 in the connecting plate 412. As explained in Figure 3, bolts 42 are passed through these holes, and nuts 43 are tightened on both ends. Then, a hardening material 44 such as mortar is filled into the gap between the frame 2 and the wooden seismic wall 3. By following these steps, the wooden seismic wall 3 is constructed and joined to the frame 2, and the wall structure 1 is installed. As mentioned above, the hardening material 44 can be omitted.

[0042] (5. Composition of wooden board material 31 and bolt 42) Figure 5(a) is a perspective view showing the disassembled structure of the wooden panels 31 and bolts 42 on the front and back of the wooden seismic wall 3. In Figure 5(a), the connecting hardware 41 such as the connecting plates 412 is not shown. This is also the case in Figures 5(b) and (c), which will be described later.

[0043] In this embodiment, the wooden panels 31 on the front and back of the wooden seismic wall 3 are offset in the width direction of the wooden seismic wall 3 (corresponding to the depth direction in Figure 5(a)), and one of the wooden panels 31 on the front and back of the wooden seismic wall 3 (for example, the back side) is connected to the other two wooden panels 31 on the other side (for example, the front side) by bolts 42. This improves the rigidity of the wooden seismic wall 3.

[0044] In other words, as shown in Figure 5(b), when the positions of the front and back wooden panels 31 of the wooden seismic wall 300 are aligned and the front and back wooden panels 31 are connected by bolts 42, even if n wooden seismic walls 300 consisting of front and back wooden panels 31 are lined up, these wooden seismic walls 300 will behave independently. In this case, when the width of the wooden panel 31 (wooden seismic wall 300) is L, the total width of the n wooden seismic walls 300 is n × L, and the total bending stiffness of the n wooden seismic walls 300 is n × L 3 It is proportional to.

[0045] On the other hand, as shown in Figure 5(a), if the positions of the front and back wooden panels 31 of the wooden seismic wall 3 are shifted, and the front and back wooden panels 31 are arranged so that the overall width of the wooden seismic wall 3 is n × L, then the entire wooden panel 31 of the wooden seismic wall 3 behaves as a single unit, and the overall bending rigidity of the wooden seismic wall 3 is (n × L). 3 It can be expected that it will be proportional to n. As a result, compared to the example in Figure 5(b), 2 Twice the rigidity can be achieved.

[0046] Furthermore, in the example shown in Figure 5(b), the bolts 42 at both ends in the width direction of the wood panel 31 bear the most bending stress with respect to the in-plane bending moment M of the wood panel 31, while the bolts 42 in the center in the width direction bear very little bending stress. As a result, the bolts 42 in the center in the width direction can only resist almost the shear force S, which is very inefficient.

[0047] However, in this embodiment, instead of aligning the positions of the front and back wooden panels 31, as shown in Figure 5(a), the positions of the front and back wooden panels 31 are shifted by half the width of the wooden panel 31. As a result, the bolt 42 in the center of the width direction of one side of the wooden panel 31 (for example, the back side) is located at the end of the width direction of the other side (for example, the front side) of the wooden panel 31, and bears the bending stress. Therefore, the entire bolt 42 can effectively resist the bending moment, and the total number of bolts 42 can be reduced.

[0048] Furthermore, when the bolt 42 resists bending stress, as shown by arrow p1 in Figure 5(c), the force flow from the bolt 42 is transmitted from one corner of one of the wooden panels 31 on the front or back of the wooden seismic wall 3 to the corner below it, then from that corner toward the corner located diagonally opposite (see arrow p2), and from there, via the bolt 42, to the corner of the other wooden panel 31 on the front or back of the wooden seismic wall 3 (see arrow p3). After this, the force flow is transmitted from the corner of the wooden panel 31 to the corner below it (see arrow p4), then from that corner toward the corner located diagonally opposite it (see arrow p5), and returns to one of the wooden panels 31 on the front or back of the wooden seismic wall 3 via the bolt 42 (see arrow p6).

[0049] In this embodiment, by repeating the above processes p1 to p6, it is expected that the force flow acting on the wooden seismic wall 3 will propagate in the width direction of the wooden seismic wall 3 while moving back and forth between the front and back wooden panels 31. Note that in Figure 5(c), only some of the bolts 42 and nuts 43 used to connect the wooden panels 31 are shown.

[0050] As described above, in this embodiment, multiple wooden boards 31 are arranged on the front and back of the wooden seismic wall 3 with their positions offset, and the wooden boards 31 on the front and back of the wooden seismic wall 3 are connected by bolts 42. As a result, a single wooden seismic wall 3 that deforms as a whole can be constructed using these wooden boards 31, and a wall structure 1 with excellent rigidity can be obtained.

[0051] Furthermore, the wooden seismic wall 3 is joined to the beam 22 of the frame 2, resisting external forces applied to the structure having a frame 2 made up of columns 21 and beam 22, and functioning effectively as a seismic wall. In particular, in this embodiment, the aforementioned joint 4 allows the wooden seismic wall 3 to be joined to the beam 22 using bolts 42, and during construction, the two wooden boards 31 can be moved from the out-of-plane direction of the frame 2 and positioned so as to sandwich the joint plate 412, thus simplifying the construction of the wall structure 1.

[0052] However, the present invention is not limited to the embodiments described above. For example, in this embodiment, a gap is provided between the front and back wooden panels 31 of the wooden seismic wall 3, but the gap does not have to be there. In this case, notches for accommodating the jointing plates 412 should be formed in the wooden panels 31 only at positions corresponding to the jointing plates 412.

[0053] Furthermore, it is possible to connect adjacent wooden panels 31 in the width direction of the wooden seismic wall 3, thereby further increasing the rigidity of the wooden seismic wall 3.

[0054] Furthermore, when constructing the wall structure 1, for example, as shown in Figures 6(a) to (d), the process of placing one of the wooden panels 31 on either the front or back of the wooden seismic wall 3, and then overlapping the other wooden panel 31 on a portion of its width, can be repeated in the width direction of the wooden seismic wall 3. In this case, the construction of the wall structure 1 becomes easier, as the effort of temporary fastening, etc., can be saved by connecting the front and back wooden panels 31 during construction.

[0055] Alternatively, instead of the gasket 33, a viscoelastic material such as a viscoelastic damper made of plate-shaped rubber may be used for vibration damping, thereby ensuring energy absorption through the restoring force of the viscoelastic material in the event of an earthquake or other seismic event.

[0056] In this embodiment, except for the ends in the width direction of the wooden seismic wall 3, the width of the wooden panels 31 on the front and back of the wooden seismic wall 3 is the same, and the positions of the wooden panels 31 on the front and back are shifted by half their width. However, the arrangement of the wooden panels 31 on the front and back is not limited to this. For example, as shown in Figure 7, it is possible to change the width of the wooden panels 31 on the front and back of the wooden seismic wall 3, or the width of the wooden panels 31 arranged in the width direction of the wooden seismic wall 3, and the amount by which the wooden panels 31 on the front and back are shifted is not limited to half the width of the wooden panels 31.

[0057] As shown in Figure 8, boards 35 can also be placed in the gaps between the wooden panels 31 on the front and back of the wooden seismic wall 3a, allowing the wooden seismic wall 3a to be used as a partition wall for fire prevention and sound insulation purposes. The boards 35 are placed along the entire length of the wooden seismic wall 3 in both the width and height directions, and the gaskets 33 mentioned above are omitted. The gaps between adjacent wooden panels 31 in the width direction of the wooden seismic wall 3a can also be filled with backing material or sealant (not shown) to conceal the boards 35.

[0058] In this case, the construction procedure can be as follows: for example, in the process shown in Figure 4(b) or Figure 4(c), the wooden board 35 can be attached to the surface of the wooden board 31 in advance before erecting the wooden board 31. Alternatively, one wooden board 31 on the front or back of the wooden seismic wall 3a can be erected, then the board 35 can be attached and fixed to that surface, and then the other wooden board 31 can be erected. The same applies to the gasket 33 and viscoelastic material.

[0059] Furthermore, in this embodiment, the columns 21 and beams 22 are made of reinforced concrete (RC), steel-reinforced concrete (SRC), or steel (S) material, but the structure of the columns 21 and beams 22 is not particularly limited, and they may be made of concrete-filled steel tubes (CFT), wood, etc. If the columns 21 and beams 22 are made of steel or CFT material, the connecting plates 412 can be fixed to the columns 21 and beams 22 by factory welding or on-site welding.

[0060] Furthermore, as shown in Figure 9(a) for the wooden seismic wall 3b, a stopper material 5 (anti-slip material) may be provided to prevent the front and back wooden boards 31 from slipping, thereby improving the integrity of the front and back wooden boards 31.

[0061] Figure 9(b) is a cross-section of the wooden seismic wall 3b in the thickness direction along line AA in Figure 9(a). The shim material 5 is placed in the space 36 between the front and back wooden boards 31. This space 36 is formed by combining recesses 361 provided at corresponding positions on the opposing surfaces of the front and back wooden boards 31.

[0062] The material for the support beams 5 should preferably be lightweight with high rigidity and strength. While general wood is suitable, steel or concrete pieces may also be used. In the example shown in Figure 9(a), multiple rectangular support beams 5 are arranged at intervals both vertically and horizontally within the plane of the wooden seismic wall 3b. However, the shape, size, number, and arrangement method of the support beams 5 are not particularly limited and should be determined as appropriate to achieve the necessary shear-preventing effect.

[0063] When constructing the wooden seismic wall 3b, for example, at a lumber processing plant, the support piece 5 can be attached in advance to the recess 361 of one of the front and back wooden boards 31. The support piece 5 is inserted into the recess 361 countersunk in the wooden board 31 and is integrated with the wooden board 31 using adhesive or screws (not shown) to prevent it from falling out during transport to the construction site. However, the support piece 5 may also be attached to the recess 361 of the wooden board 31 after it has been erected at the construction site. The rest of the construction procedure is the same as described above.

[0064] In the examples shown in Figures 9(a) and 9(b), the beam 22a of frame 2a is a steel beam, and the aforementioned connecting plate 412 is directly fixed to the flange of the steel beam by welding or the like as the connecting hardware 41a of the joint 4a. Also in this example, the solidifying material 44 between beam 22a and the wooden seismic wall 3b is omitted.

[0065] In this embodiment, bolts 42 are used to connect the wooden seismic wall to the frame, but it is also possible to use mechanisms other than bolts 42 for connection. Below, an example of connection using a mechanism other than bolts 42 will be described as the second embodiment. The second embodiment will be described in terms of differences from the first embodiment, and similar components will be denoted by the same reference numerals in the figures, etc., and their descriptions will be omitted. Also, the components described in the first and second embodiments can be combined as needed.

[0066] [Second Embodiment] Figure 10(a) shows a wall structure 10 according to a second embodiment of the present invention. The wall structure 10 of the second embodiment differs from the wall structure 1 of the first embodiment in that the wooden seismic wall 30 and the frame 2 are joined by a joint 40 using reinforcing bars 45.

[0067] Figure 10(b) shows a cross-section of the wooden seismic wall 30 in the thickness direction along line BB in Figure 10(a). In this example, the upper and lower ends of the wooden seismic wall 30 are joined to the beam 22 of the frame 2 by joints 40. The joint 40 is formed by inserting reinforcing bars 45 protruding from the beam 22 towards the wooden seismic wall 30 into holes 37 in the wooden seismic wall 30 and filling the holes 37 with adhesive 46. Epoxy resin is used as the adhesive 46, but it is not limited to this. Any adhesive 46 that has adhesion to the reinforcing bars 45 and the wooden board material 31 is acceptable, and mortar or the like can also be used.

[0068] Vertical grooves 371 are provided at corresponding positions on the opposing surfaces of the front and back wooden panels 31 of the wooden seismic wall 30. The holes 37 are formed by combining the grooves 371 of the front and back wooden panels 31. The front and back wooden panels 31 are integrated by adhesive 46 in the holes 37. In other words, the adhesive 46 functions as a connecting material for the front and back wooden panels 31.

[0069] As shown in Figure 10(a), multiple joints 40 are provided at the upper and lower ends of the wooden seismic wall 30, spaced apart in the width direction of the wooden seismic wall 30. In addition, a hardening material 44 such as mortar is filled into the gaps between the upper and lower beams 22 and the wooden seismic wall 30.

[0070] In this embodiment, the front and back wooden panels 31 are connected not only by the adhesive 46 but also by screws 6. The screws 6 are provided on both sides of the joint 40 in the width direction of the wooden seismic wall 30. Part of the screws 6 are shown at the top of Figure 10(b), and multiple screws 6 are provided at intervals in the vertical direction. These screws 6 are driven alternately from the front and back wooden panels 31. However, the screws 6 can be omitted.

[0071] Figure 10(b) shows the joint 40 at the widthwise end of the wooden seismic wall 30. At this joint 40, an adhesion removal section 451 is formed at the base of the reinforcing bar 45 on the beam 22 side. The adhesion removal section 451 is a section where adhesion between the reinforcing bar 45 and the adhesive 46 is prevented. This section can be formed by wrapping a wrapping material such as sponge around the reinforcing bar 45 or by filling the area around the reinforcing bar 45 with clay or the like. Alternatively, a member may be placed between the adhesive 46 filling section and the adhesion removal section 451 section to prevent the adhesive 46 from flowing into the adhesion removal section 451.

[0072] If the adhesion removal section 451 is not provided, when an in-plane rotational moment occurs in the wooden seismic wall 30, the section in which the reinforcing bars 45 yield and elongate will be limited to the gap between the wooden seismic wall 30 and the beam 22. As a result, the elongation of the reinforcing bars 45 will be concentrated in this section, which may cause the reinforcing bars 45 to fracture brittlely. However, by providing the adhesion removal section 451 as described above, the section in which the reinforcing bars 45 elongate can be expanded to the area of ​​the adhesion removal section 451, preventing the elongation of the reinforcing bars 45 from concentrating in a narrow section and thus preventing brittle fracture.

[0073] Since the elongation of the reinforcing bars 45 due to rotational moment is greatest at both ends in the width direction of the wooden seismic wall 30, the adhesion removal section 451 should be provided for the reinforcing bars 45 at these ends. In particular, the length of the adhesion removal section 451 should be made largest at both ends in the width direction of the wooden seismic wall 30 where the elongation of the reinforcing bars 45 is especially large, and the length of the adhesion removal section 451 can be made smaller for the reinforcing bars 45 located inside (towards the center in the width direction of the wooden seismic wall 30).

[0074] In the case of the reinforcing bars 45 located further inside than these reinforcing bars 45, in the middle section of the timber seismic wall 30 in the width direction, the elongation described above is relatively small, so the adhesion removal section 451 is not particularly necessary. In the example of Figure 10(a), the length of the reinforcing bars 45 protruding from the beam 22 is large at both ends in the width direction of the timber seismic wall 30 and smaller in the middle section in the width direction of the timber seismic wall 30, but the length of the reinforcing bars 45 protruding is not limited to this and may be constant in the width direction of the timber seismic wall 30. Also, although the beam 22 is made of reinforced concrete, it can also be made of steel, in which case the ends of the reinforcing bars 45 are fixed to the steel beam in advance by welding or the like.

[0075] In this second embodiment, the same effects as in the first embodiment can be obtained. In addition, in the second embodiment, the construction of the wooden board material 31 is made easier by sandwiching the reinforcing bars 45 in the groove 371, and the section of adhesive material 46 connecting the front and back wooden board materials 31 can be extended to a position closer to the vertical center of the wooden seismic wall 30, thereby improving the integrity of the front and back wooden board materials 31.

[0076] Furthermore, by providing a widened section (not shown) that is wider than the reinforcing bar 45 at the protruding end of the reinforcing bar 45 or in the middle of the protruding portion of the reinforcing bar 45, it is possible to improve the anchoring of the reinforcing bar 45 to the adhesive 46, thereby reducing the protruding length of the reinforcing bar 45 and the length of the hole 37. The above-mentioned widened section can be formed using, for example, an anchoring plate or a nut, but is not limited to these.

[0077] Furthermore, as shown in Figure 11(a), it is also possible to omit the reinforcing bars 45 in the middle section in the width direction of the wooden seismic wall 30a. In this case, the shear force that was borne by the reinforcing bars 45 is borne by the joints 40a at both ends in the width direction of the wooden seismic wall 30a.

[0078] Figure 11(b) is a cross-section of the wooden seismic wall 30a in the thickness direction along line CC in Figure 11(a), showing the joint portion 40a at the end of the wooden seismic wall 30a in the width direction. In this example, the end of the hole 37a of the wooden seismic wall 30a on the beam 22 side is widened, and a steel pipe 452 (cylindrical body) passed through the reinforcing bar 45 is housed in this widened portion. The hole 37a is formed by grooves 371a provided on the opposing surfaces of the front and back wooden board material 31, as described above.

[0079] Furthermore, the beam 22 is made of reinforced concrete, and a recess 221 is formed on its surface facing the wooden seismic wall 30a. A portion of the axial direction of the steel pipe 452 is housed within the recess 221, and the inside of the recess 221 and the inside of the steel pipe 452 are filled with a solidifying agent, non-shrink mortar Mor.

[0080] This effectively increases the diameter of the reinforcing bars 45 in the joint 40a, increasing the shear force that the joint 40a can withstand. As a result, even if the reinforcing bars 45 in the middle section of the width direction of the wooden seismic wall 30a are omitted, the structure can withstand the shear force applied to the wooden seismic wall 30a. The inner diameter of the steel pipe 452 is made, for example, 10 mm or more larger than the diameter of the reinforcing bars 45.

[0081] Figure 12 illustrates the construction method of a wooden seismic wall 30a. To construct the wooden seismic wall 30a, first, as shown in Figure 12(a), a steel pipe 452 is inserted through the reinforcing bar 45 protruding from the recess 221 of the beam 22, as indicated by the arrow. Then, as shown in Figure 12(b), a portion of the axial direction of the steel pipe 452 is housed in the recess 221, and non-shrink mortar Mor is filled inside the recess 221 and inside the steel pipe 452. Next, as shown in Figure 12(c), wooden boards 31 are placed on both sides of the widened portion of the hole 37a so that the steel pipe 452 fits inside, and a hardening agent 44 is filled into the gap between these wooden boards 31 and the beam 22.

[0082] Subsequently, the wooden seismic wall 30a shown in Figure 11(b), etc., is constructed by filling the hole 37a with adhesive 46. There is no gap between the steel pipe 452 and the widened portion of the hole 37a, so adhesive 46 is not filled there. Also, although the lower beam 22 is shown in Figures 12(a) to (c), for the upper beam 22, the gap between the beam 22 and the front and back wooden boards 31, and the recess 221 of the upper beam 22 should be filled simultaneously with non-shrink mortar Mor, which is a hardening agent.

[0083] Furthermore, the steel pipe 452 and the non-shrink mortar Mor inside it substantially increase the diameter of the reinforcing bars 45, and also have the same function as the aforementioned adhesion removal section 451. Alternatively, instead of substantially increasing the diameter of the reinforcing bars 45 using the steel pipe 452, etc., it is also possible to provide a mechanism to improve the frictional force between the beam 22 and the wooden seismic wall 30a. In this case, it is also possible to provide the aforementioned adhesion removal section 451 on the reinforcing bars 45 at both ends in the width direction of the wooden seismic wall 30a.

[0084] Preferred embodiments of the present invention have been described above with reference to the attached drawings, but the present invention is not limited to these examples. It will be obvious to those skilled in the art that various modifications or alterations can be conceived within the scope of the technical idea disclosed herein, and these will naturally also fall within the technical scope of the present invention. [Explanation of symbols]

[0085] 1, 10: Wall structure 2, 2a: Frame 3, 3a, 3b, 30, 30a, 300: Wooden shear wall 4, 4a, 40, 40a: Joint 21: Pillar 22, 22a: Beam 31: Wooden board material 33: Gasket 35: Board 37, 37a: Hole 41, 41a: Connecting hardware 42: Bolt 43: Nut 44: Solidifying agent 45: Reinforcement bars 46:Adhesive 411: Base plate 412: Joint plate 413: Legs 451: Adhesion removal section 452: Steel pipe

Claims

1. A wall structure having a wall body formed using wood paneling, The wooden boards located on the front and back sides of the wall are arranged so that their board surfaces face each other. The upper and lower ends of the wooden panels on the front and back of the wall are connected by a connecting member. On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. The aforementioned wall is surrounded by a frame having columns and beams, A connecting plate protrudes from the beam toward the wall body, The aforementioned joint plate is sandwiched between the wooden boards on the front and back of the wall body. A wall structure characterized in that the connecting member penetrates the joining plate, thereby joining the wall body and the beam of the frame.

2. A wall structure having a wall body formed using wood paneling, The wooden boards located on the front and back sides of the wall are arranged so that their board surfaces face each other. The upper and lower ends of the wooden panels on the front and back of the wall are connected by a connecting member. On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. A wall structure characterized in that a gasket or sealing material is placed in the gap between adjacent wooden boards in the width direction of the wall.

3. A wall structure having a wall body formed using wood paneling, The wooden boards located on the front and back sides of the wall are arranged so that their board surfaces face each other. The upper and lower ends of the wooden panels on the front and back of the wall are connected by a connecting member. On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. A wall structure characterized in that a board is arranged between the front and back wooden panels of the wall, extending over the entire length of the wall in both the width and height directions.

4. A wall structure having a wall body formed using wood paneling, The wooden boards located on the front and back sides of the wall are arranged so that their board surfaces face each other. The upper and lower ends of the wooden panels on the front and back of the wall are connected by a connecting member. On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. The aforementioned wall is surrounded by a frame having columns and beams, A wall structure characterized in that reinforcing bars protruding from the frame are inserted into holes in the wall formed by grooves on the opposing surfaces of the wooden board material on the front and back of the wall, and the adhesive material, which serves as the connecting material, is filled into these holes.

5. The end of the hole on the frame side is widened, and a cylindrical body is placed in the widened portion. A portion of the cylindrical body in the axial direction is housed in a recess formed on the wall-side surface of the frame, The wall structure according to claim 4, characterized in that the reinforcing bars are passed through the cylindrical body and the cylindrical body and the recess are filled with a solidifying agent.

6. The wall structure according to any one of claims 1 to 5, characterized in that a slip-preventing material is provided between the front and back wooden boards of the wall to prevent the front and back wooden boards from shifting.

7. A method for constructing a wall structure having a wall body formed using wood paneling, (a) A step of arranging the wooden boards located on the front and back sides of the wall so that their board surfaces face each other, (b) A step of connecting the upper and lower ends of the wooden panels on the front and back of the wall with a connecting material, It has, On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. The aforementioned wall is surrounded by a frame having columns and beams, A connecting plate protrudes from the beam toward the wall body, The aforementioned joint plate is sandwiched between the wooden boards on the front and back of the wall body. A method for constructing a wall structure, characterized in that the connecting member penetrates the joining plate, thereby joining the wall body and the beam of the frame.

8. A method for constructing a wall structure having a wall body formed using wood paneling, (a) A step of arranging the wooden boards located on the front and back sides of the wall so that their board surfaces face each other, (b) A step of connecting the upper and lower ends of the wooden panels on the front and back of the wall with a connecting material, It has, On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. A method for constructing a wall structure, characterized in that a gasket or sealant is placed in the gap between adjacent wooden boards in the width direction of the wall.

9. A method for constructing a wall structure having a wall body formed using wood paneling, (a) A step of arranging the wooden boards located on the front and back sides of the wall so that their board surfaces face each other, (b) A step of connecting the upper and lower ends of the wooden panels on the front and back of the wall with a connecting material, It has, On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. A method for constructing a wall structure, characterized in that boards are arranged between the front and back wooden panels of the wall structure, extending over the entire length of the wall structure in both the width and height directions.

10. A method for constructing a wall structure having a wall body formed using wood paneling, (a) A step of arranging the wooden boards located on the front and back sides of the wall so that their board surfaces face each other, (b) A step of connecting the upper and lower ends of the wooden panels on the front and back of the wall with a connecting material, It has, On both the front and back surfaces of the wall, a plurality of the wooden panels are arranged in a line in the width direction of the wall. The wooden panels on the front and back of the wall are arranged with their positions offset in the width direction of the wall. One of the wooden panels on the front or back of the wall is connected to the other set of wooden panels by the connecting material. The aforementioned wall is surrounded by a frame having columns and beams, A method for constructing a wall structure, characterized in that reinforcing bars protruding from the frame are inserted into holes in the wall formed by grooves on the opposing surfaces of the wooden board material on the front and back of the wall, and the adhesive material, which serves as the connecting material, is filled into these holes.

11. A method for constructing a wall structure according to any one of claims 7 to 10, characterized in that, in step (a) above, after arranging one of the front and back sides of the wall, the other side of the wood panel is placed on top of a part of the width direction of the wood panel, and this process is repeated in the width direction of the wall.

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