CLT Seismic Reinforced Wall and Its Assembly Method

Abstract

To provide an earthquake-resisting wall that has high earthquake-resisting performance, can be easily brought to a construction site, and can be easily assembled at the construction site.SOLUTION: A CLT earthquake-resistant reinforced wall has a frame part 15 and a lattice part 30 supported by the frame part 15, and the lattice part 30 is constituted by connecting rods 31 to frame part connection parts 33 and 34 installed in the frame part 15 and connecting the adjacent rods to each other by rod connection parts 32. The aforementioned problem can be solved by a CLT seismic reinforcement wall 1, in which four openings 37 and 38 are formed in a region surrounding the rod connection part 32, and CLT panels 35 and 36 are mounted so as to close opening parts positioned in a diagonal direction out of the four opening parts.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a CLT seismic reinforcement wall and an assembly method thereof.

Background Art

[0002] A seismic wall is a shear wall that is structurally designed to have significantly higher strength and rigidity so that it can resist the shaking caused by an earthquake in buildings such as S (steel frame), RC (reinforced concrete), and SRC (steel frame reinforced concrete) structures, and is surrounded by columns and beams on all four sides. In order to further improve the seismic performance, seismic walls with a lattice structure have been developed. For example, Patent Document 1 discloses a seismic reinforcement structure in which brace members are assembled in a diagonal lattice pattern and brace units with a structure that is difficult to deform are arranged in the openings. By assembling the brace members in a diagonal lattice pattern, it has tensile resistance.

[0003] However, due to the presence of openings, it may lack compressive resistance. Therefore, those in which a glass plate or glass block is fitted into the opening have been developed. For example, Patent Document 2 discloses a glass wall in which glass is installed between diagonally lattice-shaped steel materials. Patent Document 3 also describes a seismic wall having a brace member composed of bars arranged in a lattice pattern and a glass block serving as a buckling supplementary rigid member incorporated in the lattice. Patent Document 4 also describes a seismic wall having a lattice in which a buckling supplementary rigid member made of a glass plate is arranged, and a resin compression transmission member and a buffer elastic material are arranged around the glass plate.

[0004] However, the glass plate was brittle and had insufficient compression resistance. Therefore, a wall using CLT (Cross Laminated Timber), which has better compression resistance than glass, has been developed. For example, Patent Document 5 describes a shear wall having a lattice in which stiffening members made of CLT are arranged diagonally. It is a shear wall that can be formed relatively easily and can reduce the labor and cost during construction. It includes a lattice in which a plurality of openings are formed by intersecting first diagonal members and second diagonal members, a frame member surrounding the periphery of the lattice, and stiffening members disposed in at least a part of the plurality of openings. The first diagonal member and the second diagonal member are made of plate-shaped steel materials, and the stiffening member is a wooden member that is in surface contact with the first diagonal member or the second diagonal member. However, the first diagonal member and / or the second diagonal member was long, and it was not easy to bring the first diagonal member and / or the second diagonal member to the construction site for on-site assembly, lacking in ease of handling.

[0005] Therefore, a seismic wall with high seismic performance, which is easy to bring to the construction site and easy to assemble at the construction site, was studied, and its vibration damping performance was also studied, leading to the completion of the present invention.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Summary of the Invention

Problems to be Solved by the Invention

[0007] Accordingly, the main object of the present invention is to provide a seismic wall with high seismic performance that can be easily brought to a construction site and assembled at the construction site. A secondary object is to add not only seismic resistance but also vibration damping properties to the seismic wall.

Means for Solving the Problems

[0008] Means for solving the above problems include the following aspects. <First Aspect> It has a frame part and a lattice part supported by the frame part, The lattice part is configured by connecting rods to frame part connecting parts installed on the frame part and connecting adjacent rods with rod connecting parts, Four openings are formed in the area surrounding the rod connecting part, A CLT seismic reinforcement wall, characterized in that CLT panels are attached so as to close the openings located in the diagonal direction among the four openings.

[0009] <Second Aspect> The above-mentioned CLT seismic reinforcement wall, wherein the rod connecting part is cross-shaped in plan view, has arm parts protruding in four directions, and connecting holes are provided at the tips of each arm part in the outward direction.

[0010] <Third Aspect> The above-mentioned CLT seismic reinforcement wall, wherein the side part of the rod is inserted into a pipe, and a method is applied to prevent adhesive from entering both ends of the pipe, thereby forming a buckling-restrained (unbonded) rod, which serves as a vibration damping wall.

[0011] <Fourth Aspect> The above-mentioned CLT seismic reinforcement wall, wherein concave portions are provided on four sides of the CLT panel, which are cut out in a U-shape or a rectangular shape in side view, and the side part of the rod or the pipe is fitted along the longitudinal direction.

[0012] <Fifth Aspect> The above-mentioned CLT seismic reinforcement wall, wherein a lid part is attached to the concave portion, a resin-based adhesive is enclosed in the concave portion, and is cured to integrate the CLT panel and the rod.

[0013] <Sixth Aspect> The method for assembling the CLT seismic reinforcement wall described above, a frame forming step of forming a frame composed of columns and beams, a connecting part installation step of installing a frame connecting part on the frame, a rod connecting step of arranging a plurality of rods at predetermined positions and connecting adjacent rods with rod connecting parts, and a CLT panel attachment step of fitting the connected rods into recesses to attach the CLT panels, characterized by having.

[0014] <Seventh Aspect> The method for assembling the CLT seismic reinforcement wall described above, including a step of executing the CLT panel attachment a plurality of times after rod connection.

[0015] <Eighth Aspect> The method for assembling the CLT seismic reinforcement wall described above, wherein the rod connecting part for connecting adjacent rods is cross-shaped in plan view and has arm parts protruding in four directions, and connecting holes are provided at the tips of the respective arm parts in the outward direction.

[0016] <Ninth Aspect> Inserting the side part of a rod made of a screw into a pipe, applying a technique such that adhesive does not enter both ends of the pipe, and having a buckling stiffness (unbonded) rod forming step of forming a buckling stiffness (unbonded) rod, and serving as a damping wall, the method for assembling the CLT seismic reinforcement wall described above.

[0017] <Tenth Aspect> The method for assembling the CLT seismic reinforcement wall described above, wherein the CLT panel attachment step has a rod fitting step into the CLT panel of fitting the side part of the rod or the pipe along the longitudinal direction of a recess formed in a U shape or a rectangular shape in side view provided on four sides of the CLT panel.

[0018] <Eleventh Aspect> After fitting the side portion of the rod or the pipe, attach a lid to the recess, enclose a resin-based adhesive in the recess, and cure it to integrate the CLT panel and the rod. The method for assembling the CLT seismic reinforcement wall described above includes an integration step of the CLT panel and the rod.

Effect of the Invention

[0019] According to the present invention, it is possible to provide a seismic wall with high seismic performance that can be easily brought to a construction site and assembled at the construction site.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0021] (Embodiment 1) (Seismic reinforcement wall) (Approximate wall part) FIG. 1 is a front view showing an example of the seismic reinforcement wall of the present invention. As shown in FIG. 1, the seismic reinforcement wall 1 of the present invention includes a frame portion 15 formed by two columns 10 and two beams 20. The columns 10 and the beams 20 are made of steel frames. Inside the frame portion 15, an approximate wall portion 39 is formed in which a plurality of CLT panels 35 having a rectangular shape in plan view and CLT panels 36 having a triangular shape in plan view are connected at their ends. In the approximate wall portion 39, an opening 37 having a rectangular shape in plan view and an opening 38 having a triangular shape in plan view are also formed.

[0022] (Lattice portion) FIG. 2 is a front view showing an example of the seismic reinforcement wall of the present invention, and is a view with the CLT panels removed. As shown in FIG. 2, the seismic reinforcement wall 1 of the present invention has a lattice portion 30 fitted to the frame portion 15. The lattice portion 30 is formed by connecting the ends of a plurality of rods 31 to any one of a rod connection portion 32 having a cross shape in plan view, a frame connection portion 33 having a V shape in plan view, or a frame connection portion 34 having an I shape in plan view. Examples of the rod connection portion 32, the frame connection portions 33 and 34 include welded metal fittings. Examples of the rod 31 include bar-shaped metal fittings. The seismic reinforcement wall 1 of the present invention can handle tensile force with the rods 31 of the lattice portion 30, and can be a wall excellent in tensile resistance.

[0023] As shown in FIG. 2, an opening 37 having a substantially rectangular shape in plan view or an opening 38 having a triangular shape in plan view is formed in a region surrounded by the rod connection portion 32, the frame connection portions 33 and 34, and the rod 31. As shown in FIGS. 1 and 2, the CLT panel 35 is attached so as to close an opening located in one diagonal direction among the four openings surrounding the rod connection portion 32 having a cross shape in plan view.

[0024] FIG. 3 is a view showing an example of the earthquake-resistant reinforcing wall of the present invention, which is an enlarged view of the vicinity of part A in FIG. 1 and is a perspective exploded view. As shown in FIG. 3, the side portion 31c and both end portions 31a and 31b of the rod 31 are cylindrical. The rod connecting portion 32 that connects adjacent rods 31 is cross-shaped in plan view, has arm portions 32a protruding in four directions, and connecting holes (threaded portions) 32b are provided at the tips of the respective arm portions 32a in the outward direction. Both end portions 31a and 31b of the rod 31 can be inserted into the connecting hole 32b. By inserting both end portions 31a and 31b of the rod 31 into the connecting hole 32b of the rod connecting portion 32, the lattice portion 30 is formed.

[0025] Threaded portions are provided on the outer surfaces of the cylindrical portions of both end portions 31a and 31b. Threaded portions are also provided on the inner surface of the connecting hole 32b of the rod connecting portion 32. By meshing these threaded portions, they are configured to be firmly connected. Therefore, by screwing and fixing into the connecting hole 32b of the rod connecting portion 32, the stability of the lattice portion 30 can be enhanced.

[0026] In addition, the frame portion connecting portion 33 having a V shape in plan view or the frame portion connecting portion 34 having an I shape in plan view is also provided with the same connecting hole as the connecting hole 32b having a threaded portion provided on the inner surface. Thereby, both end portions 31a and 31b of the rod 31 can be screwed in.

[0027] The side portion 31c is based on a cylinder, but may also be another polygonal prism.

[0028] It is preferable that one end portion 31a of the rod 31 is a right-handed screw and the other end portion 31b is a left-handed screw. Thereby, one end portion 31a of the rod 31 is inserted all the way into the connecting hole 32b of one connecting portion 32 and screwed, and then turned in the opposite direction, and the other end portion 31b of the rod 31 is inserted into the connecting hole 32b of the other connecting portion 32 and screwed (this length is referred to as the "screw movable length"). Thereby, the rod 31 can be inserted and firmly fixed even in a narrow space. Note that, instead, both ends may be left-handed threads, and a combination of a right-handed thread and a long nut considering the screw movable length may be attached to the left-handed thread on one side at one end side or both end sides (see Embodiment 4 described later), which is an equivalent implementation method.

[0029] The rod 31 is preferably a rolled thread. A rolled thread is a thread formed by rolling a workpiece between dies. Compared with a cut thread, it has higher mechanical strength, and since the shaft part yields or breaks earlier than the thread part, the earthquake resistance can be improved. However, even with a cut thread, the earthquake resistance can be improved by cutting the shaft part to make it thinner so that the shaft part yields or breaks first. An adhesive leakage prevention material 53 is disposed between the rod 31 and the rod connecting portion 32.

[0030] (CLT panel) Basically, as the CLT panel 35, a wall structural material made of CLT (Cross Laminated Timber) of seven layers of plate materials is used. Also, when two rods 31 are arranged in parallel, it is based on CLT of nine layers of plate materials. If the buckling restraint force of the rod can be maintained with CLT of seven or nine layers, it can be used. By using CLT, the seismic reinforcement wall 1 of the present invention can be made into a wall with excellent compression resistance. The plate material is, for example, a plate-shaped member made of wood or glued laminated timber. As the glued laminated timber, an oriented board in which a plurality of planarly substantially rectangular sawn boards (laminas) are adhesively joined with their long sides in contact with each other is included. The plate material is preferably an oriented board, and the directions of orientation of the plate materials are preferably laminated and adhered so as to be orthogonal to each other. Thereby, the strength can be further increased. The thickness of the plate material is preferably 1 cm or more and 3.6 cm or less. If it is less than 1 cm, sufficient strength cannot be obtained, and if it exceeds 3.6 cm, it may be too bulky and difficult to handle. As shown in FIG. 3, recesses 35b are provided on two sides of the CLT panel 35, which are U-shaped or rectangular in side view. The other side has the same configuration, and recesses 35b are provided on four sides of the CLT panel 35, which are U-shaped or rectangular in side view. The CLT panel 36 having a triangular shape in plan view is provided with recesses 35b which are formed in a U shape or a rectangular shape in side view on two sides having a cross-shaped connecting portion 32 at the ends in plan view.

[0031] (Method for assembling earthquake-resistant reinforcement wall) FIG. 4 is a process diagram showing an example of a method for assembling a CLT earthquake-resistant reinforcement wall of the present invention. The method for assembling a CLT earthquake-resistant reinforcement wall of the present invention includes a frame portion forming step S1, a connecting portion installing step S2, a rod connecting step S3, and a CLT panel attaching step S4.

[0032] (Frame portion forming step S1) In the frame portion forming step S1, a frame portion 15 composed of columns 10 and beams 20 is formed. The columns 10 and the beams 20 are basically made of steel frames, but if a mounting method using anchor bolts, screws, etc. is used, reinforced concrete, steel frame reinforced concrete, and wooden materials can also be used.

[0033] (Connecting portion installing step S2) In the connecting portion installing step S2, frame portion connecting portions 33 and 34 are installed on the frame portion 15. The frame portion connecting portion 33 has a V shape in plan view, includes a frame portion mounting portion and arms protruding in two directions, and connecting holes are provided at the tips of the respective arms. The frame portion connecting portion 34 has an I shape in plan view, includes a frame portion mounting portion and an arm protruding in one direction, and a connecting hole is provided at the tip of the arm. As an example of a method for mounting the frame portion connecting portion 33, a base plate is mounted on a steel beam and a steel column with HTB or one-sided bolts, two thick plates are faced and butt-welded on one surface of the base plate, and then the frame portion connecting portion 33 is arranged so as to be sandwiched between the two thick plates, and the frame portion connecting portion 33 and the thick plates are fillet-welded.

[0034] (Rod connecting step S3) In the rod connecting step S3, rods 31 are connected to the frame portion connecting portions 33 and 34 (a plurality of rods are arranged at predetermined positions), and adjacent rods 31 are connected to each other by a rod connecting portion 32. In FIG. 4, the rod first row forming step S3-1, the rod second row forming step S3-2, the rod third row forming step S3-3, the rod fourth row forming step S3-4, and the rod fifth row forming step S3-5 are the rod connecting step S3. By executing all the steps of the rod connecting step S3, the lattice portion 30 can be formed without gaps.

[0035] (CLT panel mounting step S4) In the CLT panel mounting step S4, the connected rod 31 is fitted into the recess, and the CLT panels 35 and 36 are mounted. In FIG. 4, the CLT panel first row forming step S4-1, the CLT panel second row forming step S4-2, and the CLT panel third row forming step S4-3 are the CLT panel mounting step S4.

[0036] As can be seen from FIG. 3, since the recess 35b is provided in a U shape or a rectangular shape in side view on the edge of the CLT panel 35 and the rod 31 is fitted into the recess 35b, except for the uppermost row, if the rod 31 is assembled first to complete the opening 37, the CLT panel 35 cannot enter the opening 37 and the rod 31 cannot be fitted into the recess 35b. Therefore, the CLT panel 35 is attached to the rod 31 before the opening 37 is completed. Specifically, a stacking method of rod → CLT panel → rod → CLT panel is adopted from the bottom. Therefore, in an example of the method for assembling the CLT earthquake-resistant reinforcing wall of the present invention, after the rod connection, the step of performing the CLT panel attachment is included a plurality of times. This is because the number of times of performing the CLT panel attachment step after the rod connection differs depending on the sizes of the frame portion 15 and the CLT panel 35.

[0037] (Rod first row forming step S3-1) The rod 31 is connected to the frame connecting portions 33 and 34 (a plurality of rods are arranged at predetermined positions), and the adjacent rods 31 are connected to each other by the rod connecting portion 32 to form the rod first row R1 that is connected in a broken line shape.

[0038] (CLT panel first row forming step S4-1) Fit the rod 31 of the first row of rods R1 into the recess of the CLT panel 34, attach the CLT panel 35 to the rod 31, and form the first row of CLT panels P1 to which the CLT panels 35 are connected at the vertices.

[0039] (Step S3-2 for forming the second row of rods) Fit the rod 31 into the recess of the CLT panel 35 of the first row of CLT panels P1 (arrange a plurality of rods at predetermined positions), and connect adjacent rods 31 to each other with the rod connecting part 32 to form the second row of rods R2 that are connected in a broken line shape.

[0040] (Step S3-3 for forming the third row of rods) Connect the rod 31 to the rod connecting part 32 (arrange a plurality of rods at predetermined positions), and connect adjacent rods 31 to each other with the rod connecting part 32 to form the third row of rods R3 that are connected in a broken line shape.

[0041] (Step S4-2 for forming the second row of CLT panels) Fit the rod 31 of the third row of rods R3 into the recess of the CLT panel 35, attach the CLT panel 35 to the rod 31, and form the second row of CLT panels P2 to which the CLT panels 35 are connected at the vertices.

[0042] (Step S3-4 for forming the fourth row of rods) Fit the rod 31 into the recess of the CLT panel 35 of the second row of CLT panels P2 (arrange a plurality of rods at predetermined positions), and connect adjacent rods 31 to each other with the rod connecting part 32 to form the fourth row of rods R4 that are connected in a broken line shape.

[0043] (Step S3-5 for forming the fifth row of rods) Connect the rod 31 to the rod connecting part 32 (arrange a plurality of rods at predetermined positions), and connect adjacent rods 31 to each other with the rod connecting part 32 to form the fifth row of rods R5 that are connected in a broken line shape.

[0044] (Step S4-3 for forming the third row of CLT panels) Fit the rod 31 in the fifth column of rods R5 into the recess of the CLT panel 36 to attach the CLT panel 36 to the rod 31, and form the third column of CLT panels P3 to which the CLT panels 36 are connected at the vertices. The third column of CLT panels P3 is the uppermost column. Since the upward-facing surface of the CLT panel 36 is a flat surface, if a slight gap is taken at the opening, the CLT panel 36 can be inserted into the opening from the side.

[0045] Figure 5 is a diagram showing an example of the rod connection process of the earthquake-resistant reinforced wall of the present invention. Figure 5(a) is the rod preparation process, (b) is the one-end screwing process, and (c) is the other-end screwing process. First, prepare a rod 31 having one end 31a, the other end 31b, and a side portion 31c. (See Figure 5(a).) Next, insert one end 31a of the rod 31 into the connection hole 32b of one rod connection portion 32 and screw it in. (See Figure 5(b).) Next, insert the other end 31b of the rod 31 into the connection hole 32b of the other rod connection portion 32 and screw it in. (See Figure 5(c).) Repeat this to form the lattice portion 30. An adhesive leakage prevention material 53 is disposed at a position between the rod 31 and the rod connection portion 32.

[0046] It is preferable that one end 31a of the rod 31 is a right-handed screw and the other end 31b is a left-handed screw. In this case, after inserting one end 31a of the rod 31 into the connection hole 32b of one rod connection portion 32 and screwing it in all the way (see Figure 5(b)), the other end 31b of the rod 31 can be inserted into the connection hole 32b of the other rod connection portion 32 and turned in the opposite direction to screw it in. (See Figure 5(c).) Thereby, the rod 31 can be inserted and firmly fixed even in a narrow space.

[0047] Figure 6 is a diagram showing an example of the rod fitting process to the CLT panel and the integration process of the CLT panel and the rod of the earthquake-resistant reinforced wall of the present invention. As shown in FIG. 6, the CLT panel mounting step S4 includes a rod fitting step S4-5-1 to the CLT panel and an integration step S4-5-2 of the CLT panel and the rod.

[0048] (Rod fitting step S4-5-1 to the CLT panel) Recesses 35b are provided on the four sides of the CLT panel 35 and are recessed in a U-shape or a rectangular shape in side view. Along the longitudinal direction of the recess 35b, the side portion 31c of the rod 31 is fitted. Thereby, the CLT panel 35 can be attached to the lattice portion 30.

[0049] (Integration step S4-5-2 of the CLT panel and the rod) A lid portion 41 is attached so as to close the recess 35b. By attaching the lid portion 41, the fitted side portion 31c can be prevented from protruding from the recess 35b. Then, a resin-based adhesive 43 is enclosed in the recess 35b from the injection hole 44 and cured to integrate the CLT panel 35 and the rod 31. By the integration, the stability of the lattice portion 30 can be enhanced. Examples of the resin-based adhesive 43 include epoxy resins. In FIG. 6, as an example, a configuration in which a lid portion 41 made of a wooden lid is attached with screws or nails 42 is shown. A configuration in which holes are provided in a metal lid portion and it is attached with bolts may also be used.

[0050] (Embodiment 2) FIG. 7 is an enlarged view showing another example of the seismic reinforcement wall of the present invention, and is a perspective exploded view. The side portion 31c of the rod 31 made of a forged screw is inserted into a pipe 51, and both ends of the pipe 51 are sealed with a material that does not allow the adhesive to enter, for example, a sealing material 52, to form a buckling-restrained (unbonded) rod. Otherwise, the configuration is the same as that of Embodiment 1. Since the seismic reinforcement wall of Embodiment 2 includes a buckling-restrained (unbonded) rod, it becomes a vibration damping wall. Examples of the pipe 51 include a thin-walled metal pipe. By sealing, the resin-based adhesive 43 can be prevented from entering the pipe 51, but a method other than sealing can also be used to prevent the adhesive from entering the pipe. For example, methods such as using a gasket made of rubber or packing a rubber ring-like object can be cited. An adhesive leakage prevention material 53 is disposed between the rod 31 and the rod connecting portion 32.

[0051] FIG. 8 is a diagram showing an example of a buckling supplementary rigid (unbonded) rod forming process of the seismic reinforcement wall of the present invention. FIG. 8(a) is a rod preparation process, (b) is a buckling supplementary rigid (unbonded) rod forming process, (c) is a partial plan view of a pipe fitting process, (d) is a partial side view, (e) is a partial plan view of a resin encapsulation process, (f) is a partial side view, (g) is a partial plan view of an adhesive leakage prevention process, and (h) is a partial side view. Prepare a rod 31 made of a forged screw (FIG. 8(a)). Insert the side portion 31c of the rod 31 into the pipe 51, and seal both ends of the pipe 51 with a sealing material 52 to form a buckling supplementary rigid (unbonded) rod (FIG. 8(b)). Recessed portions 35b that are U-shaped or rectangular in side view are provided on the four sides of the CLT panel 35, and the pipe 51 with the side portion 31c of the rod 31 inserted is fitted along the longitudinal direction (FIGS. 8(c) and (d)). Thereby, the CLT panel 35 can be attached to the lattice portion 30. Attach a lid portion 41 to the recessed portion 35b (FIGS. 8(c) and (d)). By attaching the lid portion 41, the fitted side portion 31c can be prevented from protruding from the recessed portion 35b. Encapsulate the resin-based adhesive 43 into the recessed portion 35b from the injection hole 44 and cure it to integrate the CLT panel 35, the rod 31, and the lid portion 41 (FIGS. 8(e) and (f)). By the integration, the stability of the lattice portion 30 can be enhanced. In FIG. 8, as an example, a configuration in which a lid portion 41 made of a wooden lid is attached with screws or nails 42 is cited. Finally, an adhesive leakage prevention material 53 is attached. The adhesive leakage prevention material 53 is composed of an adhesion layer 54 made of an elastomer, rubber, or the like and a support layer 55 made of a thin copper plate or the like, and the adhesion layer 54 can adhere to the wood so that the resin-based adhesive 43 does not leak outwards.

[0052] (Embodiment 3) FIG. 9 is a diagram showing still another example of the earthquake-resistant reinforcement wall of the present invention, and is a diagram showing still another example of the buckling-restraining (unbonded) rod forming process. FIG. 9(a) is a partial plan view of the pipe fitting process, (b) is a partial side view, (c) is a partial plan view of the resin encapsulation process, (d) is a partial side view, (e) is a partial plan view of the adhesive leakage prevention process, and (f) is a partial side view. Large recesses 35b, which are cut out in a U-shape or rectangular shape in side view, are made slightly larger on the four sides of the CLT panel 35, and two buckling-restraining (unbonded) rods are arranged in parallel along the longitudinal direction. In addition to creating a lattice portion by connecting the two buckling-restraining (unbonded) rods using a connecting portion provided with two connecting holes in one arm, the configuration is the same as that of Embodiment 2. Since the earthquake-resistant reinforcement wall of Embodiment 3 is provided with two buckling-restraining (unbonded) rods on one side of the CLT panel, it becomes a stronger vibration damping wall.

[0053] In this configuration, two buckling-restraining (unbonded) rods are arranged in parallel, and a lattice portion is created using a connecting portion provided with two connecting holes in one arm. Then, recesses 35b, which are cut out in a U-shape or rectangular shape in side view, are provided on the four sides of the CLT panel 35, and two pipes 51 into which side portions 31c of the rods 31 of the two buckling-restraining (unbonded) rods arranged in parallel are inserted are fitted along the longitudinal direction. Thereby, the CLT panel 35 can be attached to the lattice portion 30. A lid portion 41 is attached to the recess 35b (FIGS. 9(a) and (b)). By attaching the lid portion 41, the fitted side portion 31c can be prevented from protruding from the recess 35b. Enclose the resin-based adhesive 43 from the injection hole 44 into the recess 35b and cure it to integrate the CLT panel 35, the rod 31, and the lid portion 41 (Figs. 9(c) and (d)). By the integration, the stability of the lattice portion 30 can be enhanced. As an example, a configuration in which the lid portion 41 made of a wooden lid is attached with screws or nails 42 is cited. By arranging two buckling-restrained (unbonded) rods in parallel and using a connecting portion provided with two connecting holes in one arm to create the lattice portion, the vibration damping performance can be further enhanced. Finally, attach the adhesive leakage prevention material 53. The adhesive leakage prevention material 53 is composed of an adhesion layer 54 made of an elastomer or rubber, etc., and a support layer 55 made of a thin copper plate, etc., and the adhesion layer 54 can adhere to the wood so that the resin-based adhesive 43 does not leak out.

[0054] (Embodiment 4) Fig. 10 is a diagram showing another example of the buckling-restrained (unbonded) rod forming process of the seismic reinforcement wall of the present invention. Fig. 10(a) is an explanatory diagram of the rod preparation process, (b) is an explanatory diagram of the buckling-restrained (unbonded) rod forming process, and (c) is an explanatory diagram of the length adjustment process using a long nut and a screw. Prepare a rod 31 made of a forged screw with left-handed threads at both ends (Fig. 10(a)). Insert the side portion 31c of the rod 31 into the pipe 51, and seal both ends of the pipe 51 with the sealing material 52 to form a buckling-restrained (unbonded) rod (Fig. 10(b)). Attach a combination of an extension screw (in this case, a "right-handed screw") 62 and a long nut 60 considering the screw movable length to the left-handed screw on one side at one end portion side (Fig. 10(c)). Thereby, the lattice portion 30 can be formed by more accurately adjusting the lattice interval. Note that long nuts 60 and extension screws 62 may be attached to both end portions sides.

Examples

[0055] (Example 1, Comparative Example 1) The constituent members of the earthquake-resistant reinforced wall of Example 1 and the constituent members of the earthquake-resistant wall of Comparative Example 1 were prepared. The constituent members of the earthquake-resistant reinforced wall of Example 1 are short rods, three types of connecting members, and CLT panels, and the constituent members of Comparative Example 1 are long rods and CLT panels. <Ease of bringing to the construction site> Through a path with a small opening, the constituent members of Example 1 were much easier to bring into a construction site with a small working space than the constituent members of Comparative Example 1. <Ease of work at the construction site> At a construction site with a small working space, the constituent members of Example 1 were much easier to assemble than the constituent members of Comparative Example 1.

Industrial applicability

[0056] The CLT earthquake-resistant reinforced wall of the present invention relates to an earthquake-resistant wall with high earthquake-resistant performance, which can be easily brought to a construction site and is easy to assemble at the construction site, and is expected to be utilized in the construction industry field.

Explanation of symbols

[0057] 1... CLT earthquake-resistant reinforced wall, 10... column, 20... beam, 15... frame part, 30... lattice part, 31... rod, 31a, 31b... end part (screw part), 31c... side part, 32... rod connecting part, 33, 34... frame part connecting part, 32a... arm part, 32b... connecting hole (screw part), 35, 36... CLT panel, 35b... recess, 37, 38... opening, 39... approximate wall part, 41... lid part, 42... screw or nail, 43... resin-based adhesive, 44... injection hole, 51... pipe, 52... sealing material, 53... adhesive leakage prevention material, 54... adhesion layer, 55... support layer, 60... long nut, 62... extension screw, R1... first row of rods, R2... second row of rods, R3... third row of rods, R4... fourth row of rods, R5... fifth row of rods, P1... first row of CLT panels, P2... second row of CLT panels, P3... third row of CLT panels.

Claims

1. It has a frame part and a plurality of wall parts held within the frame part, The wall parts have rod connection parts located at the intersections of the lattice, rods connecting between adjacent rod connection parts, and CLT panels arranged within a lattice frame assembled by the rod connection parts and the rods, Recesses are formed on the sides of the CLT panel, and the rods are provided within the recesses, A CLT earthquake-resistant reinforcing wall, characterized by the above.

2. The CLT earthquake-resistant reinforcing wall according to Claim 1, wherein the rod connection part is cross-shaped, has arm parts protruding in four directions, and connection holes for the rods are provided at the tips of each arm part facing outward.

3. The CLT earthquake-resistant reinforcing wall according to Claim 1 or 2, wherein a lid part is attached to the recess, a resin-based adhesive is enclosed within the recess, and cured to integrate the CLT panel and the rod.

4. The rod is inserted into a bracing pipe, and a technique is applied to prevent the adhesive from entering both ends of the bracing pipe to form a buckling bracing (unbonded) rod, which becomes a damping wall, for the CLT earthquake-resistant reinforcing wall according to Claim 1 or 2.

5. The CLT earthquake-resistant reinforcing wall according to any one of Claims 1 to 4, wherein the wall part has an opening where the CLT panel does not exist.

6. A method for assembling a CLT earthquake-resistant reinforcing wall according to any one of Claims 1 to 5, comprising: A frame part forming step of forming a frame part composed of columns and beams; A connection part installation step of installing frame part connection parts on the frame part; A rod connection step of arranging a plurality of rods at predetermined positions and connecting adjacent rods with rod connection parts; A CLT panel attachment step of attaching the CLT panel by aligning the connected rods with the recesses formed on the sides of the CLT panel. A method for assembling a CLT earthquake-resistant reinforcing wall, characterized by the above.

7. The method for assembling a CLT earthquake-resistant reinforcing wall according to Claim 6, including performing the step of attaching the CLT panel a plurality of times after the rod connection.

8. The method for assembling a CLT earthquake-resistant reinforcing wall according to Claim 6, wherein in the CLT panel attachment step, the rods are aligned along the longitudinal direction of the recesses formed on the sides of the CLT panel.

9. The method for assembling the CLT earthquake-resistant reinforced wall according to claim 6, wherein in the CLT panel mounting step, after aligning the rod along the longitudinal direction of the recess formed in the side of the CLT panel, the recess and the rod are closed with a lid portion, an adhesive is enclosed in the recess and cured to integrate the CLT panel and the rod.

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