Earthquake-resistant walls

Abstract

To provide an earthquake resistant wall hardly causing shear buckling.SOLUTION: An earthquake-resistant wall 14 has a corrugated steel plate 20 attached to a peripheral member 12 constituting a frame, a wooden board 24 arranged to face the corrugated steel plate 20, and a plurality of screw members 42 fixing the wooden board 24 to the corrugated steel plate 20. The corrugated steel plate 20 is stiffened by a woody board 24. Thereby, the occurrence of out-of-plane deformation of the corrugated steel plate 20 is suppressed, and shear buckling of the corrugated steel plate 20 is hardly caused.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a shear wall having corrugated steel plates. [Background technology]

[0002] Earthquake-resistant walls installed in buildings are installed within a framework made up of columns that make up the building and horizontal members such as beams and floor slabs, and they increase the building's strength by absorbing horizontal forces acting during earthquakes and other events.

[0003] Cited Document 1 discloses a corrugated steel plate earthquake-resistant wall that is lightweight and has high energy absorption capacity. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2006-45776 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, for example, if a corrugated steel plate shear wall installed within the framework of a frame that forms a structural surface with a large area does not have sufficient out-of-plane rigidity, there is a concern that when excessive horizontal force is applied to the corrugated steel plate shear wall, out-of-plane deformation will occur in the corrugated steel plate shear wall, resulting in shear buckling.

[0006] In consideration of the above, an object of the present invention is to make shear buckling less likely to occur. [Means for solving the problem]

[0007] The earthquake-resistant wall of the first embodiment comprises a corrugated steel plate attached to peripheral members constituting a frame, a wood board arranged opposite the corrugated steel plate, and a plurality of screw members for fixing the wood board to the corrugated steel plate.

[0008] In the earthquake-resistant wall according to the first aspect, the corrugated steel plate is stiffened by the wood board, which suppresses out-of-plane deformation of the corrugated steel plate and makes it difficult for shear buckling to occur in the corrugated steel plate.

[0009] Furthermore, since the wood board is fixed to the corrugated steel plate by the screw members, the wood board can be easily fixed to the corrugated steel plate.

[0010] The earthquake-resistant wall of the second aspect is the earthquake-resistant wall of the first aspect, in which the corrugated steel plates are provided in multiple pieces and connected horizontally with their ends overlapping, and the wood board is fixed by the screw members at the connecting parts where the ends of the corrugated steel plates overlap.

[0011] According to the earthquake-resistant wall of the second aspect, a large corrugated steel plate can be constructed by connecting a plurality of corrugated steel plates in the horizontal direction.

[0012] Furthermore, by overlapping the ends of the corrugated steel plates to connect the corrugated steel plates, it is possible to reliably transmit shear force between the connected corrugated steel plates.

[0013] Furthermore, by overlapping the ends of the corrugated steel plates to connect them, the horizontal length of the entire corrugated steel plate formed by connecting the corrugated steel plates can be adjusted, and manufacturing errors and installation errors of the connected corrugated steel plates can be absorbed.

[0014] A third aspect of the present invention relates to a seismic wall according to the first or second aspect, wherein the screw members are arranged in a staggered manner with respect to the board surface of the wood board.

[0015] According to the earthquake-resistant wall of the third aspect, the corrugated steel plate can be stiffened in an area, which reduces the stiffening capacity per fixing point of the screw member and allows the wood board to be fixed to the corrugated steel plate by a simple fixing method. Effect of the Invention

[0016] Since the present invention has the above-mentioned configuration, it is possible to make shear buckling less likely to occur. [Brief description of the drawings]

[0017] [Figure 1] FIG. 2 is a front view showing a seismic wall according to one embodiment. [Diagram 2] FIG. 2 is a rear view showing a seismic wall according to one embodiment. [Diagram 3] 3 is a cross-sectional view taken along line 3-3 of FIG. 1. [Figure 4] 4 is a cross-sectional view taken along line 4-4 of FIG. 1. [Diagram 5] FIG. 1 is a perspective view showing a wood board according to one embodiment. [Figure 6] 6 is a cross-sectional view taken along line 6-6 in FIG. 5. [Figure 7] FIG. 11 is a front view showing a variation of a seismic wall according to one embodiment. [Figure 8] 8 is a cross-sectional view taken along line 8-8 in FIG. 7. [Figure 9] FIG. 2 is a side cross-sectional view showing a variation of a seismic wall according to one embodiment (reference form). [Figure 10] FIG. 2 is a side cross-sectional view showing a variation of a seismic wall according to one embodiment (reference form). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, a seismic wall according to one embodiment will be described with reference to the drawings.

[0019] (earthquake-resistant walls) As shown in the front view of Fig. 1 and the rear view of Fig. 2, a seismic wall 14 is attached to peripheral members 12 that constitute the framework of a reinforced concrete building 10. The peripheral members 12 are composed of reinforced concrete columns 16A, 16B and beams 18A, 18B. The seismic wall 14 is composed of corrugated steel plates 20, frame members 22, and wooden boats 24.

[0020] As shown in Fig. 3, which is a cross section taken along line 3-3 in Fig. 1, and Fig. 4, which is a cross section taken along line 4-4 in Fig. 1, the cross section of the corrugated steel sheet 20 has a corrugated shape in which trapezoids are continuously arranged above and below so that concaves and convexes alternate in the vertical direction (Z-axis direction). That is, when the earthquake-resistant wall 14 is attached to the peripheral member 12, the folds of the corrugated steel sheet 20 are approximately horizontal.

[0021] 1, the frame member 22 is configured to have steel horizontal plates 26A, 26B and steel vertical plates 28A, 28B. The horizontal plates 26A, 26B are arranged along the upper and lower end edges of the corrugated steel plate 20 and joined to the upper and lower end edges of the corrugated steel plate 20. The vertical plates 28A, 28B are arranged along the left and right end edges of the corrugated steel plate 20 and joined to the left and right end edges of the corrugated steel plate 20.

[0022] The ends of the horizontal plates 26A, 26B and the ends of the vertical plates 28A, 28B are joined together to form the frame member 22, in which the horizontal plates 26A, 26B and the vertical plates 28A, 28B are integrated together.

[0023] A plurality of headed studs 30 are attached at equal intervals along the periphery of the corrugated steel plate 20 on the outer peripheral surface of the frame member 22. The headed studs 30 are embedded in the columns 16A, 16B and the beams 18A, 18B, thereby integrating the peripheral member 12 and the corrugated steel plate 20. In other words, the corrugated steel plate 20 is attached to the peripheral member 12.

[0024] As shown in the oblique view of Figure 5, the wood board 24 is composed of a fire-retardant layer 32, a wooden wood layer 34 covering the front side of the fire-retardant layer 32, and a wooden wood layer 36 covering the back side of the fire-retardant layer 32.

[0025] As shown in Fig. 6, which is a cross-sectional view of line 6-6 in Fig. 5, the fire-retardant layer 32 is composed of wooden boards 38 and mortar boards 40 arranged alternately in the horizontal direction (X-axis direction). As a result, the fire-retardant layer 32 exerts a heat absorbing effect, making the wooden board 24 a fire-resistant board.

[0026] 3 and 4, the wooden board 24 is disposed opposite the corrugated steel plate 20. A plurality of screw members, lag screw bolts 42, are inserted into a plurality of holes formed in the corrugated steel plate 20 and screwed into the wooden board 24, thereby fixing the wooden board 24 to the corrugated steel plate 20. The lag screw bolts 42 are screwed into the wooden board 24 so that their tips reach the mortar board 40 of the fire-retardant layer 32.

[0027] 1, the multiple lag screw bolts 42 are alternately arranged in two adjacent rows in the horizontal direction (X-axis direction) and the vertical direction (Z-axis direction). That is, the multiple lag screw bolts 42 are arranged in a staggered manner on the board surface of the wood board 24.

[0028] 2, there is a gap of a predetermined length between the inner peripheral surface of the frame member 22 and the outer peripheral surface of the wooden board 24. As a result, the wooden board 24 is separated from the peripheral members 12 and does not bear the vertical load or earthquake load of the building 10. The wooden board 24 is arranged so that the fiber direction (wood grain direction) of the wooden board 24 is vertical (Z-axis direction).

[0029] (effect) Next, the effects of this embodiment will be described.

[0030] According to the earthquake-resistant wall 14 of this embodiment, as shown in Figures 3 and 4, the wooden board 24 disposed opposite the corrugated steel plate 20 is fixed to the corrugated steel plate 20, so that the corrugated steel plate 20 is stiffened by the wooden board 24. This makes it possible to suppress out-of-plane deformation of the corrugated steel plate 20 and to make the corrugated steel plate 20 less susceptible to shear buckling.

[0031] In addition, since the wooden boards 24 are fixed to the corrugated steel plates 20 by the lag screw bolts 42 as screw members, the wooden boards 24 can be easily fixed to the corrugated steel plates 20. In other words, the number of construction steps for the earthquake-resistant walls 14 can be reduced.

[0032] Furthermore, since the wooden board 24 is fixed to the corrugated steel plate 20 by the lag screw bolt 42 as a screw member, the wooden board 24 can be fixed to the corrugated steel plate 20 without welding. In other words, it is possible to reduce the number of construction steps for the earthquake-resistant wall 14, prevent deterioration of the quality of the corrugated steel plate 20 due to welding, and further, there is no need to worry about defects due to poor welding.

[0033] 1, the corrugated steel plate 20 can be stiffened in a planar manner by the wooden board 24 by arranging the lag screw bolts 42 as screw members in a staggered pattern on the board surface of the wooden board 24. This makes it possible to obtain a high stiffening effect of the corrugated steel plate 20 by the wooden board 24. Also, the stiffening capacity per one fixing point by the lag screw bolts 42 as screw members can be reduced, and the wooden board 24 can be fixed to the corrugated steel plate 20 by a simple fixing method.

[0034] Furthermore, according to the earthquake-resistant wall 14 of this embodiment, if the earthquake-resistant wall 14 is installed so that the wooden board 24 faces the inside of the room, as shown in Figures 3 and 4, the wooden board 24 can be used as a finishing material, and the wood on the surface of the wooden board 24 can improve the aesthetic appearance.

[0035] Furthermore, according to the earthquake-resistant wall 14 of this embodiment, as shown in Figs. 3 and 4, since the wood board 24 has fire resistance, the earthquake-resistant wall 14 can function as a fire-resistant wall without providing a separate fire-resistant board.

[0036] (Modification) Next, a modification of the above embodiment will be described.

[0037] In the above embodiment, as shown in Fig. 1, an example in which the earthquake-resistant wall 14 is configured to have one corrugated steel plate 20 has been shown, but the earthquake-resistant wall 14 may be configured to have a plurality of corrugated steel plates. An example of an earthquake-resistant wall 44 configured to have two corrugated steel plates 20 is shown in Fig. 7, a front view, and Fig. 8, a cross-sectional view taken along line 8-8 of Fig. 7.

[0038] The earthquake-resistant wall 44 is provided with two corrugated steel plates 20 (hereinafter, referred to as "corrugated steel plates 20A, 20B"). The ends of the two corrugated steel plates 20A, 20B (the right end of the corrugated steel plate 20A and the left end of the corrugated steel plate 20B) overlap and are connected in the horizontal direction (X-axis direction). At a connection portion 46 where the ends of the two corrugated steel plates 20A, 20B overlap, a wooden board 24 is fixed to the two corrugated steel plates 20A, 20B by a lag screw bolt 42 as a screw member. Specifically, the lag screw bolt 42 is inserted into holes formed in the ends of the corrugated steel plates 20A, 20B and screwed into the wooden board 24, thereby fixing the wooden board 24 to the corrugated steel plates 20A, 20B.

[0039] According to the earthquake-resistant wall 44, a large corrugated steel plate can be configured by connecting a plurality of corrugated steel plates 20A, 20B in the horizontal direction.

[0040] Furthermore, by overlapping the ends of the corrugated steel plates 20A, 20B to connect the corrugated steel plates 20A, 20B, it is possible to reliably transmit shear force between the connected corrugated steel plates 20A, 20B.

[0041] Furthermore, by overlapping the ends of the corrugated steel plates 20A, 20B to connect the corrugated steel plates 20A, 20B, it is possible to adjust the horizontal length (X-axis direction) of the entire corrugated steel plate formed by connecting the corrugated steel plates 20A, 20B. Also, it is possible to absorb manufacturing errors and installation errors of the connected corrugated steel plates 20A, 20B.

[0042] In the above embodiment, as shown in Fig. 3 and Fig. 4, the cross-sectional shape of the corrugated steel sheet 20 is a corrugated shape in which trapezoids are continuously arranged vertically so that concaves and convexes are alternated, but the cross-sectional shape of the corrugated steel sheet 20 may be any corrugated shape. For example, the cross-sectional shape of the corrugated steel sheet 20 may be a corrugated shape in which rectangles, mountain shapes, arcs, etc. are continuously arranged vertically so that concaves and convexes are alternated.

[0043] Furthermore, in the above embodiment, as shown in Fig. 5, an example was shown in which the wooden board 24 was a fire-resistant board equipped with a fire-retardant layer 32, but the wooden board 24 may be any board made of wood. For example, the wooden board 24 may be a fire-resistant board having a different configuration, or may be a wooden board that does not have fire resistance.

[0044] 2, an example was shown in which there is a gap of a predetermined length between the inner peripheral surface of the frame member 22 and the outer peripheral surface of the wooden board 24, but the inner peripheral surface of the frame member 22 and the outer peripheral surface of the wooden board 24 may be in contact with each other. Having a gap of a predetermined length between the inner peripheral surface of the frame member 22 and the outer peripheral surface of the wooden board 24 is preferable because it prevents the wooden board 24 from completely bearing the vertical load of the building 10 or earthquake load.

[0045] 1, the multiple lag screw bolts 42 are arranged in a staggered pattern on the board surface of the wood board 24, but the multiple lag screw bolts 42 may be arranged in other ways. For example, the multiple lag screw bolts 42 may be arranged in a lattice pattern so as to be equally spaced in the horizontal direction (X-axis direction) and the vertical direction (Z-axis direction).

[0046] In the above embodiment, as shown in Fig. 3, an example has been shown in which the lag screw bolts 42 are inserted into holes formed in the corrugated steel plate 20 and screwed into the wooden board 24 to fix the wooden board 24 to the corrugated steel plate 20, but other types of screw members may be used. Also, the wooden board 24 may be fixed to the corrugated steel plate 20 by screwing a screw member into the corrugated steel plate 20 from the wooden board 24 side.

[0047] For example, it may be a seismic wall 48 shown in the side cross-sectional view of FIG. Reference form In the earthquake-resistant wall 48, a reamed drill screw 50 is used as the screw member. The reamed drill screw 50 is a screw that has a drill at its tip and can be screwed into a steel plate by penetrating it without the need for a pilot hole.

[0048] The reamed drill screw 50 is driven into the corrugated steel plate 20 from the surface of the wood layer 36 of the wood board 24, and the threaded portion of the reamed drill screw 50 is screwed into the hole in the corrugated steel plate 20 formed by the drill of the reamed drill screw 50. In this way, the wood board 24 is fixed to the corrugated steel plate 20.

[0049] If this fixing method is used, there is no need to pre-form holes in the corrugated steel sheet 20. In addition, since the tensile strength of each of the reamed drill screws 50 is higher than that of the lag screw bolts 42, the number of screw members used to fix the wood board 24 to the corrugated steel sheet 20 can be reduced.

[0050] When the screw member is a drill screw, a pilot hole serving as a guide for the drill screw may be formed in the wooden board 24 or the corrugated steel plate 20. Also, as shown in the side cross-sectional view of FIG. 10, a countersunk hole 52 is formed in the surface of the wooden layer 36 of the wooden board 24. Then, the head of a reamed drill screw 50 driven into the wooden board 24 is received in the countersunk hole 52, and the countersunk hole 52 may be closed with a wooden plug 54 so as to cover the head of the reamed drill screw 50 ( Reference form In this way, the appearance of the rear surface (wood layer 36 side) of the wood board 24 can be improved.

[0051] In the above embodiment, as shown in Figures 3 and 4, an example has been shown in which the wooden board 24 is fixed to the corrugated steel plate 20 by screwing the lag screw bolt 42 into the wooden board 24, but it is preferable that the lag screw bolt 42 does not penetrate the wooden board 24. It is more preferable to screw the lag screw bolt 42 into the wooden board 24 so that the tip portion reaches the mortar board 40 of the fire-retardant layer 32, because this provides a high degree of fixation of the lag screw bolt 42 to the wooden board 24.

[0052] Furthermore, in the above embodiment, as shown in FIG. 1, an example was shown in which the earthquake-resistant wall 14 was applied to a reinforced concrete building 10, but the earthquake-resistant wall 14 of this embodiment can be applied to buildings of various structures and sizes, such as steel frame construction, steel-reinforced concrete construction, and CFT (Concrete Filled Steel Tube) construction.

[0053] In the above embodiment, as shown in Fig. 1, an example was shown in which the peripheral member 12 was composed of the columns 16A, 16B and the beams 18A, 18B, but the peripheral member 12 may be composed of columns and a floor slab. The peripheral member 12 may be composed only of columns, only of beams, or only of a floor slab. For example, if the peripheral member 12 is composed only of beams, the earthquake-resistant wall 14 is installed between the upper and lower beams, and gaps or spaces are formed on the left and right sides of the earthquake-resistant wall 14.

[0054] Furthermore, the columns, beams, and floor slabs that constitute the peripheral member 12 may be of various structures, such as reinforced concrete, steel frame, steel reinforced concrete, or CFT (Concrete Filled Steel Tube) construction.

[0055] Although one embodiment of the present invention has been described above, the present invention is not limited to such an embodiment, and one embodiment and various modified examples may be used in appropriate combination, and it is of course possible to implement the present invention in various forms without departing from the gist of the present invention. [Explanation of symbols]

[0056] 12 Peripheral parts 14, 44, 48 Earthquake-resistant walls 20 Corrugated steel plate 24 Wood Board 42 Lag screw bolt (threaded member) 46 Connecting part 50 Reamed drill screw (screw component)

Claims

1. Corrugated steel plates attached to the peripheral members constituting the frame; A wood board arranged opposite the corrugated steel plate; and a plurality of screw members for fixing the wood board to the corrugated steel plate, The wood board has a fire-retardant layer, a wooden wood layer covering a front surface of the fire-retardant layer, and a wooden wood layer covering a rear surface of the fire-retardant layer, The fire-retardant layer is configured to include a mortar board, The screw member is inserted into a hole formed in the corrugated steel plate and screwed into the wood board, and a tip portion of the screw member reaches the mortar board. Earthquake-resistant wall.

2. The tip of the screw member does not protrude from the surface of the wooden board opposite to the surface of the wooden board facing the corrugated steel plate. The earthquake-resistant wall according to claim 1.

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