Reinforcement member, vibration damping device, wall structure, wooden house, and method for manufacturing a reinforcement member and a wall structure

Abstract

To provide a reinforcing member capable of passing through a notch in a vertical frame whose dimensions are restricted, and to provide a reinforcing member that can reduce vertical dimension occupied by a portion that intersects the vertical frame.SOLUTION: A bar-shaped brace 200, in which one end, a first end 212, is disposed on a first vertical frame side, and the other end, a second end 222, is disposed on a second vertical frame side comprises: a first shaft section 210 having the first end 212; a second shaft section 220 having the second end 222; and an intermediate shaft section 230 located between the first shaft section 210 and the second shaft section 220. And a central axis line Lc of the intermediate shaft section 230 intersects a line segment Lvb connecting the first end 212 and the second end 222.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a reinforcing member, a vibration control device, a wall structure, a wooden house, a method for manufacturing a reinforcing member, and a method for manufacturing a wall structure. [Background technology]

[0002] For example, in the wall structure of a wooden house that employs frame wall construction, a diagonal brace-type vibration control device is sometimes installed between vertically extending vertical frames to improve earthquake resistance. For example, Patent Document 1 discloses a vibration control device that is configured by combining a linear brace (reinforcement member) and a damper. Also, for example, in a homogeneous wall structure, the horizontal pitch between vertical frames must be 500 mm or less due to certain structural regulations. Therefore, when a vibration-damping device is provided in the homogeneous wall structure, a third vertical frame may be present between the first vertical frame where one end of the vibration-damping device is provided and the second vertical frame where the other end of the vibration-damping device is provided (the horizontal middle position, the middle part of the frame). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-144387 A Summary of the Invention [Problem to be solved by the invention]

[0004] When a vibration-damping device is installed in the above-mentioned wall structure, interference occurs at the position where the reinforcing member of the vibration-damping device intersects with the third vertical frame. In this case, by providing a notch (notch) in part of the third vertical frame at the interference position, the reinforcing member can intersect with the third vertical frame without causing interference with the third vertical frame. In this case, the cutouts in the third vertical frame are designed to have a predetermined dimension so that the wall structure in which the vibration control device is installed can be regarded as a load-bearing wall. This makes it easier to ensure that the required amount of wall space for a wooden house is secured.

[0005] However, the third vertical frame with the cutout must be provided with a metal fitting with specified dimensions (a pipe guard made of C-mark metal fittings) as a reinforcing material, and the cutout must be covered with said metal fittings. This means that the dimensions of the cutout (particularly the vertical dimension) are naturally limited according to the dimensions of the metal fittings. If the dimensions of the cutout are limited, the reinforcing member will interfere with the third vertical frame when it is crossed with it, making it impossible to provide a vibration control device in the wall structure (note that if a pipe guard made of C-mark metal fittings is not used, the reinforcing member can be crossed with the vertical frame by expanding the cutout vertically).

[0006] The present disclosure has been made in consideration of the above circumstances, and aims to provide a reinforcing member, a vibration-damping device, a wall structure, and a wooden house, as well as a method for manufacturing a reinforcing member and a method for manufacturing a wall structure, that can pass through a cutout in a vertical frame with limited dimensions. It also aims to provide a reinforcing member, a vibration-damping device, a wall structure, and a wooden house, as well as a method for manufacturing a reinforcing member and a method for manufacturing a wall structure, that can reduce the vertical dimension occupied by the portion that intersects with the vertical frame. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems, the reinforcement member, vibration control device, wall structure, and wooden house, as well as the manufacturing method of the reinforcement member and the manufacturing method of the wall structure of the present disclosure, employ the following measures. The reinforcing member according to the first aspect of the present disclosure is a rod-shaped reinforcing member having one end, a first end, arranged on the side of a first structural member and the other end, a second end, arranged on the side of a second structural member, and comprising a first shaft portion having the first end, a second shaft portion having the second end, and an intermediate shaft portion located between the first shaft portion and the second shaft portion, and a central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end.

[0008] According to the reinforcing member of this embodiment, the central axis of the intermediate shaft portion located between the first shaft portion and the second shaft portion intersects with the line segment connecting the first end portion and the second end portion, so that the angle of the central axis of the intermediate shaft portion can be made different from the angle of the line segment. Therefore, when the reinforcing member is disposed between the first structural member and the second structural member, the central axis of the intermediate shaft portion can be made closer to the horizontal direction depending on the posture of the reinforcing member. This makes it possible to reduce the vertical dimension occupied by the intermediate shaft portion compared to when the central axis of the intermediate shaft portion does not intersect with the line segment (for example, when the reinforcing member is simply linear). Therefore, even if the dimension (vertical dimension) of the cutout provided in the vertical frame is limited, the reinforcing member can intersect with the vertical frame without interfering with the vertical frame.

[0009] A reinforcing member according to a second aspect of the present disclosure, in the first aspect, comprises a first bent portion smoothly connecting the first shank and the intermediate shank, and a second bent portion smoothly connecting the second shank and the intermediate shank, wherein the first shank extends along the line segment, the second shank extends along the line segment, the first bent portion has one end connected to the first shank and the other end connected to the intermediate shank and extends so as to deviate from the line segment, and the second bent portion has one end connected to the second shank and the other end connected to the intermediate shank and extends so as to deviate from the line segment, and a direction in which the first bent portion deviates from the line segment is opposite to a direction in which the second bent portion deviates from the line segment, relative to the line segment.

[0010] The reinforcing member according to this embodiment includes a first bent portion that smoothly connects the first shaft portion and the intermediate shaft portion, and a second bent portion that smoothly connects the second shaft portion and the intermediate shaft portion, so that the bending moment acting on the reinforcing member can be reduced. This allows the strength setting of the reinforcing member against the input load to be reduced, so that the thickness and size of the member can be reduced.

[0011] In the reinforcing member according to the third aspect of the present disclosure, in the second aspect, when the point where the line segment intersects with the central axis line of the intermediate shaft portion is defined as an intersection point P, the shape from the first bent portion to the second bent portion is point-symmetrical with respect to the intersection point P.

[0012] According to the reinforcing member of this embodiment, the shape from the first bent portion to the second bent portion is point-symmetrical with respect to the intersection point P, so that the force generated in the portion of the reinforcing member from the first bent portion to the second bent portion can be evenly distributed.

[0013] In the reinforcing member according to the fourth aspect of the present disclosure, in the second or third aspect, the length along the line segment from the first bent portion to the second bent portion is 15% or more and 30% or less of the total length along the line segment.

[0014] According to the reinforcing member of this aspect, the length along the line segment from the first bent portion to the second bent portion is set to 15% to 30% of the total length along the line segment of the reinforcing member, so that the bending range can be prevented from extending over the entire reinforcing member, thereby making it possible to reduce the size of the reinforcing member.

[0015] In the reinforcing member according to the fifth aspect of the present disclosure, in any of the second to fourth aspects, the inclination angle of the central axis of the first bent portion relative to the line segment and the inclination angle of the central axis of the second bent portion relative to the line segment are greater than or equal to 8 degrees and less than or equal to 14 degrees.

[0016] According to the reinforcing member of this embodiment, the inclination angle of the central axis of the first bent portion relative to the line segment and the inclination angle of the central axis of the second bent portion relative to the line segment are greater than or equal to 8 degrees and less than or equal to 14 degrees, so that the bending moment acting on the base end portion of the first bent portion and the base end portion of the second bent portion can be suppressed.

[0017] A reinforcing member according to a sixth aspect of the present disclosure is, in the fifth aspect, such that the inclination angle of the central axis of the first bent portion relative to the line segment and the inclination angle of the central axis of the second bent portion relative to the line segment are approximately 12 degrees.

[0018] According to the reinforcing member of this embodiment, the inclination angle of the central axis of the first bent portion relative to the line segment and the inclination angle of the central axis of the second bent portion relative to the line segment are approximately 12 degrees, thereby making it possible to suppress the bending moment acting on the base end portion of the first bent portion and the base end portion of the second bent portion.

[0019] A reinforcing member according to a seventh aspect of the present disclosure is any one of the first to sixth aspects, wherein an inclination angle of the central axis of the intermediate shaft portion with respect to the line segment is set to be equal to or greater than 20 degrees and equal to or less than 45 degrees.

[0020] According to the reinforcing member of this embodiment, the inclination angle of the central axis of the intermediate shaft portion with respect to the line segment is set to be greater than or equal to 20 degrees and less than or equal to 45 degrees, so that the bending moment acting on each portion of the brace can be suppressed.

[0021] A reinforcing member according to an eighth aspect of the present disclosure is the seventh aspect, wherein an inclination angle of the central axis of the intermediate shaft portion with respect to the line segment is set to about 30 degrees.

[0022] According to the reinforcing member of this embodiment, the inclination angle of the central axis of the intermediate shaft portion with respect to the line segment is approximately 30 degrees, so that the bending moment acting on each portion of the brace can be suppressed.

[0023] A vibration damping device according to a ninth aspect of the present disclosure comprises a reinforcing member according to any one of the first to eighth aspects and a damper that generates a damping force, the damper being connected to the first end.

[0024] The vibration damping device according to this embodiment includes a reinforcing member and a damper that generates a damping force, and the damper is connected to the first end, so that the reinforcing member can be used as a brace for the vibration damping device. Furthermore, by using the reinforcing member in combination with the damper, the force acting on the reinforcing member when a load due to an earthquake is input can be suppressed. The type of the damper is not particularly limited, and examples thereof include a hysteresis damper, a fluid damper, and a viscoelastic damper.

[0025] A vibration damping device according to a tenth aspect of the present disclosure comprises a reinforcing member according to any one of the second to eighth aspects and a damper that generates a damping force, the damper being connected to the first end, and a damping force set in the damper such that no plastic deformation occurs in the portion from the first bent portion to the second bent portion when a load is input.

[0026] According to the vibration control device of this embodiment, the damper is set with a damping force such that plastic deformation does not occur in the portion from the first bent portion to the second bent portion when a load is input. Therefore, the force acting on the reinforcing member when a load due to an earthquake is input can be suppressed, thereby preventing plastic deformation from occurring in the portion from the first bent portion to the second bent portion.

[0027] A wall structure according to an eleventh aspect of the present disclosure comprises a vibration damping device as described in the ninth or tenth aspect, the first structural member, and the second structural member, wherein the first structural member is a first vertical frame extending in a vertical direction, the second structural member is a second vertical frame extending in a vertical direction and spaced apart horizontally from the first structural member, and a third vertical frame is arranged between the first vertical frame and the second vertical frame in the horizontal direction and extending in a vertical direction, the damper is connected to an upper or lower part of the first structural member, the second end of the reinforcing member is connected to a lower or upper part of the second structural member, and the intermediate axis portion of the reinforcing member intersects with the third vertical frame.

[0028] According to the wall structure of this aspect, the intermediate shaft portion of the reinforcing member intersects with the third vertical frame, so that the vertical dimension occupied by the portion (intermediate shaft portion) of the reinforcing member of the vibration damping device that intersects with the third vertical frame can be reduced. Therefore, even if the dimension (vertical dimension) of the notch provided in the third vertical frame is limited, the reinforcing member (vibration damping device) can intersect with the third vertical frame without interfering with the third vertical frame.

[0029] A wall structure according to a twelfth aspect of the present disclosure is such that, in the eleventh aspect, the third vertical frame is provided with a notch formed so as to be recessed in a depth direction perpendicular to the vertical and horizontal directions, and the intermediate shaft portion of the reinforcing member is passed through the notch of the third vertical frame.

[0030] According to the wall structure of this embodiment, the intermediate shaft portion of the reinforcing member is passed through the notch in the third vertical frame, so that even if the dimensions of the notch (vertical dimensions) are limited, the reinforcing member (vibration control device) can cross the third vertical frame without interfering with it.

[0031] A wall structure according to a thirteenth aspect of the present disclosure comprises a vibration damping device as described in the ninth or tenth aspect, the first structural member, and the second structural member, wherein the first structural member is a first vertical frame extending in a vertical direction, the second structural member is a second vertical frame extending in a vertical direction and spaced apart horizontally from the first vertical frame, and a third vertical frame is arranged between the first vertical frame and the second vertical frame in the horizontal direction and extending in the vertical direction, the damper is connected to the upper or lower part of the first vertical frame, the second end of the reinforcing member is connected to the lower or upper part of the second vertical frame, the third vertical frame is provided with a notch formed so as to be recessed in a depth direction perpendicular to the vertical and horizontal directions, and the intermediate axis portion of the reinforcing member is arranged in the notch of the third vertical frame.

[0032] According to the wall structure of this aspect, the intermediate shaft portion of the reinforcing member is disposed in the cutout of the third vertical frame, so that the vertical dimension occupied by the portion of the reinforcing member of the vibration damping device disposed in the cutout of the third vertical frame (the intermediate shaft portion) can be reduced. Therefore, even if the dimension (vertical dimension) of the cutout provided in the third vertical frame is limited, the reinforcing member (vibration damping device) can cross the third vertical frame without interfering with the third vertical frame.

[0033] A wall structure according to a fourteenth aspect of the present disclosure comprises the vibration damping device according to the ninth or tenth aspect, a first structural member, and the second structural member, wherein the first structural member is a first vertical frame extending in a vertical direction, the second structural member is a second vertical frame extending in a vertical direction and spaced apart from the first vertical frame in a horizontal direction, a third vertical frame arranged between the first vertical frame and the second vertical frame in the horizontal direction and extending in the vertical direction, and a third-2nd vertical frame arranged next to the third vertical frame in the horizontal direction and extending in the vertical direction. and a frame, wherein the damper is connected to the upper or lower part of the first vertical frame, the second end of the reinforcing member is connected to the lower or upper part of the second vertical frame, the third vertical frame has a notch formed so as to be recessed in a depth direction perpendicular to the vertical and horizontal directions, the 3-2 vertical frame has a second notch formed so as to be recessed in a depth direction perpendicular to the vertical and horizontal directions, and the intermediate shaft portion of the reinforcing member is arranged in the notch of the 3-2 vertical frame and the second notch of the 1-2 vertical frame.

[0034] According to the wall structure of this embodiment, the intermediate shaft portion of the reinforcing member is disposed in the notch of the third vertical frame and the second notch of the 3-2 vertical frame, so that the vertical dimension occupied by the portion (intermediate shaft portion) of the reinforcing member of the vibration damping device disposed in the notch of the third vertical frame and the second notch of the 3-2 vertical frame can be reduced. Therefore, even if the dimension (vertical dimension) of the notch provided in the third vertical frame and the dimension (vertical dimension) of the second notch provided in the 3-2 vertical frame are limited, the reinforcing member (vibration damping device) can cross the third vertical frame and the 3-2 vertical frame without interfering with the third vertical frame and the 3-2 vertical frame.

[0035] A wall structure according to a fifteenth aspect of the present disclosure is the fourteenth aspect, wherein the notch of the third vertical frame and the second notch of the 3-2 vertical frame have the same vertical dimension but different vertical positions.

[0036] According to the wall structure of the present embodiment, the cutout in the third vertical frame and the second cutout in the 3-2 vertical frame have the same vertical dimensions but different vertical positions, thereby increasing the freedom of arrangement (e.g., inclination angle) of the reinforcing member of the vibration control device.

[0037] A wall structure according to a sixteenth aspect of the present disclosure is based on any one of the eleventh to fifteenth aspects, wherein a central axis line of the intermediate shaft portion of the reinforcing member lies in a horizontal direction relative to the line segment.

[0038] In the wall structure according to this aspect, the central axis of the intermediate shaft of the reinforcing member lies horizontally more than the line segment, so that the vertical dimension occupied by the intermediate shaft can be reduced. Therefore, even if the dimension (vertical dimension) of the notch provided in the third vertical frame is limited, the reinforcing member (vibration control device) can cross the third vertical frame without interfering with it.

[0039] The wall structure according to a seventeenth aspect of the present disclosure is in any one of the twelfth to sixteenth aspects, further comprising a metal cover that covers the cutout and / or the second cutout.

[0040] The wall structure according to this aspect includes a metal cover that covers the cutout and / or the second cutout. The metal cover is, for example, a pipe guard made of C-mark metal.

[0041] The wall structure according to the 18th aspect of the present disclosure is the 17th aspect, which comprises a panel material commonly provided on the face of the first vertical frame, the face of the second vertical frame, and the face of the third vertical frame opposite to the face on which the cover is provided.

[0042] According to the wall structure of this aspect, since the wall structure is provided with the panel material, the strength of the wall structure can be improved.

[0043] A wall structure according to a 19th aspect of the present disclosure is, in any one of the 11th to 18th aspects, a first device end is an end of the damper connected to an upper or lower part of the first vertical frame, a second device end is the second end connected to the lower or upper part of the second vertical frame, and a point where the line segment and the central axis of the intermediate shaft portion intersect is an intersection point P, the intersection point P being a distance between the first device end and the second device end And It is located on the second line segment connecting the first and second lines and is located at the midpoint of the second line segment.

[0044] According to the wall structure of this embodiment, the intersection point P is a first device end and a second device end And Since the intermediate shaft portion of the reinforcing member is located on the second line segment connecting the first and second vertical frames and at the midpoint of the second line segment, the center of the intermediate shaft portion of the reinforcing member can be made to substantially coincide with the center of the third vertical frame.

[0045] A wall structure according to a twentieth aspect of the present disclosure is, in any one of the eleventh to eighteenth aspects, a first device end is an end of the damper connected to an upper or lower part of the first vertical frame, a second device end is the second end connected to the lower or upper part of the second vertical frame, and a point where the line segment and the central axis of the intermediate shaft portion intersect is an intersection point P, the intersection point P being a distance between the first device end and the second device end And It is on the second line segment connecting the first and second lines, but is not in the middle of the second line segment.

[0046] According to the wall structure of this embodiment, the intersection point P is a first device end and a second device end And Because the center of the intermediate shaft of the reinforcing member is on the second line segment connecting the third and second vertical frames and is not in the middle of the second line segment, the center of the intermediate shaft of the reinforcing member can be shifted from the center of the third vertical frame. This allows the brace to be installed without interfering with the cutout and the second cutout, even if a third-2 vertical frame is added.

[0047] A wooden house according to a twenty-first aspect of the present disclosure includes the wall structure according to any one of the eleventh to twentieth aspects.

[0048] A manufacturing method of a reinforcing member according to a 22nd aspect of the present disclosure comprises a first shank having a first end portion positioned on the side of a first structural member, a second shank having a second end portion positioned on the side of a second structural member, and an intermediate shank portion positioned between the first shank portion and the second shank portion, wherein the central axis of the intermediate shank portion intersects with a line segment connecting the first end portion and the second end portion, and the first shank portion, the second shank portion and the intermediate shank portion are formed by bending a single tubular metal material.

[0049] A method of manufacturing a reinforcing member according to a twenty-third aspect of the present disclosure includes a first shank having a first end disposed on a first structural member side, a second shank having a second end disposed on a second structural member side, an intermediate shank located between the first shank and the second shank, a first bent portion smoothly connecting the first shank and the intermediate shank, and a second bent portion smoothly connecting the second shank and the intermediate shank, wherein a central axis of the intermediate shank intersects with a line segment connecting the first end and the second end, the first shank extends along the line segment, and the second shank extends along the line segment, and one end of the first bent portion is connected to the first shank. and the other end is connected to the intermediate shaft portion and extends so as to deviate from the line segment, and the second bent portion has one end connected to the second shaft portion and the other end connected to the intermediate shaft portion and extends so as to deviate from the line segment, and a direction in which the first bent portion deviates from the line segment is opposite to a direction in which the second bent portion deviates from the line segment, wherein an inclination angle of a central axis of the first bent portion with respect to the line segment and an inclination angle of the central axis of the second bent portion with respect to the line segment are determined based on a bending moment acting on a base end portion of the first bent portion and a base end portion of the second bent portion.

[0050] A twenty-fourth aspect of the present disclosure relates to a method for manufacturing a wall structure according to the fourteenth aspect, wherein the second cutout is provided at a position different from that of the first cutout in the vertical direction. Effect of the Invention

[0051] According to the present disclosure, it is possible to pass through a cutout in a vertical frame having a limited dimension, and it is also possible to reduce the vertical dimension of the portion that intersects with the vertical frame. [Brief description of the drawings]

[0052] [Figure 1] FIG. 2 is a front view of the wall structure according to the first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a right side view of the wall structure according to the first embodiment of the present disclosure. [Diagram 3] FIG. 2 is a rear view of the wall structure according to the first embodiment of the present disclosure. [Figure 4] FIG. 2 is a partially enlarged front view of part A shown in FIG. [Diagram 5] 5 is a cross-sectional view taken along line VV shown in FIG. [Figure 6] 1 is a perspective view of a vibration damping device according to a first embodiment of the present disclosure. [Figure 7] FIG. 1 is a front view of a vibration damping device according to a first embodiment of the present disclosure. [Figure 8] FIG. 2 is a right side view of the vibration damping device according to the first embodiment of the present disclosure. [Figure 9] FIG. 2 is a front view of the brace according to the first embodiment of the present disclosure. [Figure 10] 10 is a partially enlarged front view of part B shown in FIG. 9. FIG. [Figure 11] 2A to 2C are a partial front view and a cross-sectional view taken along line XX of a brace according to a first embodiment of the present disclosure and a brace according to a comparative example. [Figure 12] FIG. 11 is a partially enlarged front view of a wall structure according to a comparative example. [Figure 13] This is a front view of a wall structure in which horizontal displacement (displacement moving to the left in the figure) has occurred in the upper frame. [Figure 14] This is a front view of a wall structure in which horizontal displacement (displacement moving to the right in the figure) has occurred in the upper frame. [Figure 15] FIG. 2 is a conceptual diagram showing a relationship between a central axis and a line segment of a brace according to the first embodiment of the present disclosure. [Figure 16]10 is a conceptual diagram showing the relationship between the central axis of a brace and line segments according to Modification 1. FIG. [Figure 17] FIG. 11 is a front view of a wall structure according to a second embodiment of the present disclosure. [Figure 18] 18 is a partially enlarged front view of part C shown in FIG. 17. FIG. [Figure 19] FIG. 13 is a front view of a brace according to a second embodiment of the present disclosure. [Figure 20] FIG. 11 is a partially enlarged front view of the vicinity of a first bent portion of a brace according to a second embodiment of the present disclosure. [Figure 21] FIG. 11 is a partially enlarged front view of the vicinity of an intermediate shaft portion and a first bent portion of a brace according to a second embodiment of the present disclosure. [Figure 22] FIG. 3 is a front view of the wall structure shown in FIG. 1 with the 3-2 vertical frame omitted. [Figure 23] FIG. 11 is a front view of a wall structure according to Modification 3. [Figure 24] FIG. 11 is a front view of a wall structure according to Modification 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0053] A reinforcing member, a vibration damping device, a wall structure, a wooden house, a manufacturing method of a reinforcing member, and a manufacturing method of a wall structure according to a first and second embodiment of the present disclosure will be described with reference to the drawings.

[0054] [First embodiment] The first embodiment will be described below.

[0055] <About wall structure> As shown in Figures 1 to 3, the wall structure 10 is a structure used, for example, in the walls of a wooden house, and comprises a frame-like structure having a first vertical frame 11 (first structural member), a second vertical frame 12 (second structural member), and a third vertical frame 13 extending vertically above a bottom frame 14, as well as an upper frame 15 extending horizontally above each vertical frame, a panel material 16 provided on the back of the frame-like structure, and a vibration control device 50 arranged from the upper part of the first vertical frame 11 to the lower part of the second vertical frame 12. The frame-shaped structural body of the wall structure 10 is manufactured, for example, by a frame wall construction method. However, this construction method is merely an example, and other construction methods may be adopted.

[0056] The bottom frame 14 is a piece of wood extending horizontally, and is installed on, for example, a foundation, a base, floor joists, or a structural floor board (not shown). The bottom frame 14 is a member that supports each vertical frame and transmits vertical loads to the foundation, etc.

[0057] The first vertical frame 11 is a piece of wood extending in the vertical direction, and is provided on the upper surface of one end side (the left side in FIG. 1) of the lower frame 14. The first vertical frame 11 is a member that is mainly subjected to a vertical load. The dimensions of the first vertical frame 11 are determined, for example, by standards (construction methods). In this embodiment, the width (horizontal dimension) is 89 mm, the height (vertical dimension) is approximately 2400 mm, and the depth is 89 mm. However, these values ​​are merely examples, and other dimensions may be used.

[0058] The second vertical frame 12 is a piece of wood extending in the vertical direction, and is provided on the upper surface of the other end side (the right side in FIG. 1) of the lower frame 14. The second vertical frame 12 is a member to which a load is mainly applied in the vertical direction. The dimensions of the second vertical frame 12 are determined, for example, by standards (construction methods). In this embodiment, the width is 89 mm, the height is approximately 2400 mm, and the depth is 89 mm. However, these values ​​are merely examples, and other dimensions may be used. The second vertical frame 12 is provided spaced apart from the first vertical frame 11 in the horizontal direction.

[0059] The third vertical frame 13 is a piece of wood extending in the vertical direction, and is provided on the upper surface of the lower frame 14 between the first vertical frame 11 and the second vertical frame 12 in the horizontal direction. The third vertical frame 13 is a member on which a load is mainly applied in the vertical direction. The dimensions of the third vertical frame 13 are determined, for example, by standards (construction methods). In this embodiment, the width is 38 mm, the height is approximately 2400 mm, and the depth is 89 mm. However, these values ​​are merely examples, and other dimensions may be used.

[0060] The horizontal center-to-center pitch of each vertical frame is determined by standards (construction methods) to be, for example, 500 mm or less. In this embodiment, the pitch of each vertical frame is set to 455 mm, which is less than 500 mm, in accordance with the standard. Specifically, the distance (center-to-center pitch) between the first vertical frame 11 and the third vertical frame 13 and the distance (center-to-center pitch) between the third vertical frame 13 and the second vertical frame 12 are set to 455 mm. However, these values ​​are merely examples, and other dimensions may be used.

[0061] As shown in Figures 4 and 5, the third vertical frame 13, which is arranged horizontally between the first vertical frame 11 and the second vertical frame 12, has a notch 13a to avoid interference with the brace 200 of the vibration control device 50 arranged from the first vertical frame 11 to the second vertical frame 12. The cutout 13a will be described in detail later.

[0062] The upper frame 15 is a piece of wood extending horizontally, and is provided on the upper surfaces of the first vertical frame 11, the second vertical frame 12, and the third vertical frame 13.

[0063] 2 and 3, the panel material 16 is a panel (e.g., plywood) that extends horizontally and vertically, and is provided on the back surface of the first vertical frame 11, the back surface of the second vertical frame 12, the back surface of the third vertical frame 13, the back surface of the lower frame 14, and the back surface of the upper frame 15. The panel material 16 is a member for surface-reinforcing the frame-like structure having the first vertical frame 11, the second vertical frame 12, the third vertical frame 13, the lower frame 14, and the upper frame 15. The panel material 16 is fixed to the first vertical frame 11, the second vertical frame 12, the third vertical frame 13, the lower frame 14 and the upper frame 15 by, for example, a plurality of nails 21.

[0064] <About vibration control devices> The wall structure 10 according to this embodiment is configured by attaching a vibration damping device 50 to the above-mentioned frame-shaped structural body. The vibration suppression device 50 will now be described in detail.

[0065] <<Outline of vibration control device>> As shown in Figures 6 to 8, the vibration damping device 50 is a device extending along a virtual line segment Lvd (second line segment) connecting one end (first device end 51) and the other end (second device end 52), and is equipped with an oil damper 100 (damper) and a brace 200 (reinforcement member).

[0066] As shown in Figures 1 to 3, when the vibration control device 50 is attached to a frame-shaped structure, the first device end 51 is positioned at the upper part of the first vertical frame 11, and the second device end 52 is positioned at the lower part of the second vertical frame 12. That is, the vibration control device 50 attached to the frame-like structure is disposed obliquely from the upper part of the first vertical frame 11 to the lower part of the second vertical frame 12 like a diagonal brace.

[0067] The first device end 51 is attached to the first vertical frame 11 via a first bracket 310 . The first bracket 310 is fixed to the upper part of the first vertical frame 11 with a plurality of screws 22 (see FIG. 2). The first bracket 310 rotatably supports the first device end 51. At this time, the rotation axis of the first device end 51 is aligned along the depth direction.

[0068] The second device end 52 is attached to the second vertical frame 12 via a second bracket 320 . The second bracket 320 is fixed to the lower part of the second vertical frame 12 with a plurality of screws 23 (see FIG. 2). The second bracket 320 rotatably supports the second device end 52. At this time, the rotation axis of the second device end 52 is aligned along the depth direction.

[0069] The vibration damping device 50 is installed in a frame-like structure in an inclined state by a first bracket 310 attached to the first vertical frame 11 and a second bracket 320 attached to the second vertical frame 12. At this time, taking into consideration the dimensions of the vibration-damping device 50, the position of the first bracket 310 (i.e., the position of the first device end 51) and the position of the second bracket 320 (i.e., the position of the second device end 52) are determined so that the inclination angle θ (see FIG. 1) is approximately 15 degrees or more and 25 degrees or less. By setting the inclination angle θ within the above-mentioned range, the damping function of the vibration-damping device 50 can be fully exerted. However, these values ​​are merely examples and are determined appropriately taking into consideration the damping performance of the vibration damping device 50 and the dimensions of the frame-like structure. The inclination angle θ is the angle that the line segment Lvd makes with respect to a line along the vertical direction.

[0070] <<Oil damper>> As shown in FIGS. 6 to 8, the oil damper 100 includes a cylinder 110 and a rod 120 that moves forward and backward relative to the cylinder 110. The oil damper 100 may have a known structure.

[0071] The end of the cylinder 110 from which the rod 120 does not extend is connected to an end of the brace 200 (a first end 212). The tip of the rod 120 is the first device end 51 described above, and is configured to be connectable to the first bracket 310.

[0072] It should be noted that a friction damper or a viscoelastic damper may be used instead of the fluid damper (oil damper 100). Furthermore, the type of the damper is not particularly limited, and may be any damper that generates a desired damping force.

[0073] <<Brace>> As shown in Figures 9 and 10, the brace 200 is a metal rod-shaped member extending from a first end 212 located on the first vertical frame 11 side to a second end 222 located on the second vertical frame 12 side. Here, the imaginary line segment Lvb connects the first end 212 and the second end 222. The brace 200 is oriented so that this line segment Lvb coincides with the above-mentioned line segment Lvd. That is, the first end 212 and the second end 222 of the brace 200 exist on the line segment Lvd. In other words, the first device end 51 of the vibration damping device 50, the first end 212 of the brace 200, the second end 222 of the brace 200, and the second device end 52 of the vibration damping device 50 exist on the same straight line (on the line segment Lvd).

[0074] The brace 200 includes, for example, a first shaft portion 210, a second shaft portion 220, an intermediate shaft portion 230, a first bent portion 240, and a second bent portion 250. The boundaries of the various parts are indicated by dashed lines in Fig. 10. However, the dashed lines are shown for the purpose of explanation and do not limit the shape of the actual brace 200.

[0075] Brace 200 is, for example, a circular tube with a wall thickness of about 2 mm and a diameter of about 38 mm, excluding connection parts 211 and rod parts 221 at each end region. However, these numerical values ​​are merely examples, and other dimensions may be used. Also, brace 200 does not necessarily have to be a circular tube, and may be a tube with a cross-sectional shape other than a circular shape, a solid bar, or a block. However, making brace 200 hollow can reduce the weight of brace 200. Brace 200 is manufactured, for example, by bending a single tubular metal material, except for connection portion 211 and rod portion 221. However, this manufacturing method is merely an example, and other manufacturing methods may be adopted.

[0076] One end region of the brace 200 (the end region of the first shaft portion 210) is a connection portion 211, and is configured to be connectable to the cylinder 110 (see FIG. 7). At this time, an end of the connection portion 211 is a first end portion 212. The other end region of the brace 200 (the end region of the second shaft portion 220) is a rod portion 221, which is configured to be connectable to a second bracket 320 (see FIG. 7). At this time, an end of the rod portion 221 is a second end portion 222. This second end portion 222 is also the second device end portion 52 described above.

[0077] Next, the first shaft portion 210, the second shaft portion 220, the intermediate shaft portion 230, the first bent portion 240, and the second bent portion 250 will be described in detail.

[0078] The first shaft portion 210 is a straight rod-shaped portion provided with a connection portion 211 having a first end portion 212 . The first shaft portion 210 extends along the line segment Lvb toward the second end portion 222. That is, the central axis Lc of the brace 200 is aligned along (coincides with) the line segment Lvb in the range corresponding to the first shaft portion 210.

[0079] The second shaft portion 220 is a straight rod-shaped portion provided with a rod portion 221 having a second end 222 . The second shaft portion 220 extends along the line segment Lvb toward the first end portion 212. That is, the central axis Lc of the brace 200 is along (coincides with) the line segment Lvb in the range corresponding to the second shaft portion 220.

[0080] The intermediate shaft portion 230 is a straight rod-shaped portion that is disposed between the first shaft portion 210 and the second shaft portion 220 in the direction in which the line segment Lvb extends. The intermediate shaft portion 230 intersects with the line segment Lvb. That is, the central axis Lc of the brace 200 intersects with the line segment Lvb in a range corresponding to the intermediate shaft portion 230. At this time, the inclination angle α of the central axis Lc (the central axis Lc of the intermediate shaft portion 230) with respect to the line segment Lvb is set to 20 degrees or more and 45 degrees or less, preferably about 30 degrees. However, this value is an example, and is appropriately determined in consideration of the bending moment acting on each part of the brace 200, etc. The intermediate shaft portion 230 is shown by cross-hatching in Fig. 10. However, the cross-hatching is shown for the purpose of explanation and does not limit the shape of the actual brace 200.

[0081] The first bent portion 240 is a smoothly curved portion that connects the first shaft portion 210 and the intermediate shaft portion 230 . The first bent portion 240 extends so as to deviate from the line segment Lvb. That is, the central axis Lc of the brace 200 deviates from the line segment Lvb in a range corresponding to the first bent portion 240. In detail, the central axis Lc in that range gradually moves away from the line segment Lvb in the direction from the first shaft portion 210 toward the intermediate shaft portion 230, and then extends while smoothly curving so as to approach the line segment Lvb again (without intersecting with the line segment Lvb).

[0082] The second bent portion 250 is a smoothly curved portion that connects the second shaft portion 220 and the intermediate shaft portion 230 . The second bent portion 250 extends so as to deviate from the line segment Lvb. That is, the central axis Lc of the brace 200 deviates from the line segment Lvb in a range corresponding to the second bent portion 250. In detail, the central axis Lc in that range gradually moves away from the line segment Lvb in the direction from the second shaft portion 220 toward the intermediate shaft portion 230, and then extends while smoothly curving so as to approach the line segment Lvb again (without intersecting with the line segment Lvb).

[0083] At this time, the first bent portion 240 and the second bent portion 250 deviate in opposite directions from each other with respect to the line segment Lvb, and the shapes of the first bent portion 240 and the second bent portion 250 are in a point-symmetric relationship with respect to the intersection point P. Here, the intersection point P is a point where the central axis Lc and the line segment Lvb of the intermediate shaft portion 230 intersect. The intersection point P is also the center point of the central axis Lc of the intermediate shaft portion 230. From the above, the shape of brace 200 from first bent portion 240 to second bent portion 250 is in a point-symmetric relationship with respect to intersection point P.

[0084] In the brace 200 configured in this manner, the portion from the first bent portion 240 to the second bent portion 250 only occupies a limited range when viewed from the entire brace 200. Specifically, the length (straight-line distance) along the line segment Lvb from the first bending portion 240 to the second bending portion 250 is set to be greater than or equal to 15% and less than or equal to 30% of the length from the first end 212 to the second end 222 (the total length of the brace 200).

[0085] <Relationship between the vibration control device and the third vertical frame> The vibration damping device 50 thus configured is attached to a frame-like structure (specifically, the first vertical frame 11 and the second vertical frame 12) as shown in Figs. At this time, the first device end 51 of the vibration damping device 50, the first end 212 of the brace 200 and the second end 222 of the brace 200 (the second device end 52 of the vibration damping device 50) are on the same straight line (on the line segment Lvd) as described above.

[0086] 1 and 4, when the vibration damping device 50 is attached to a frame-shaped structure, it is preferable that the intersection point P approximately coincides with the center (horizontal center) of the third vertical frame 13. Therefore, the vibration damping device 50 (for example, the dimensions and shape of the brace 200) are designed so that the intersection point P is located at the center of the third vertical frame 13.

[0087] 4 and 5, a notch 13a is provided in a portion of the third vertical frame 13 that intersects with the brace 200. By passing the intermediate shaft portion 230 of the brace 200 through the notch 13a, in other words, by arranging the intermediate shaft portion 230 of the brace 200 in the notch 13a, the brace 200 can intersect with the third vertical frame 13 without interfering with the third vertical frame 13. Further, a pipe guard 17 (cover) is provided on the front surface of the third vertical frame 13 to cover the cutout 13a through which the intermediate shaft portion 230 of the brace 200 is passed. The pipe guard 17 is fixed to the third vertical frame 13 with a plurality of nails 24, for example. In addition, in the space defined by the cutout 13a of the third vertical frame 13 and the pipe guard 17, a heat insulating material 18 is filled around the intermediate shaft portion 230 of the brace 200. An example of the heat insulating material 18 is glass wool. However, a heat insulating material 18 other than glass wool may be used.

[0088] The cutout 13a is a recess formed to be recessed in the depth direction (more specifically, formed to be recessed from the front to the back of the third vertical frame 13). When the cutout 13a is provided in the third vertical frame 13, a pipe guard 17 must be provided to cover the cutout 13a. The pipe guard 17 is a C-mark display hardware, and its dimensions are determined by standards. Specifically, its width is 40 mm, its height is 160 mm, and its thickness is 1.2 mm. Therefore, in order to cover the cutout 13a with the pipe guard 17, the dimensions of the cutout 13a (particularly the vertical dimension) must be determined according to the dimensions of the pipe guard 17. In this embodiment, the height of the cutout 13a is set to about 110 mm, taking into account the stop of the nail 24.

[0089] The width of the notch 13a is equal to the width of the third vertical frame 13, and the depth is 45 mm, but these dimensions are independent of the dimensions of the pipe guard 17. However, these numerical values ​​are merely examples, and other dimensions may be used.

[0090] Since the height dimension of the cutout 13a is limited in this manner, it is desirable to make the height dimension occupied by the brace 200 as small as possible, at least at the intersection with the cutout 13a. Therefore, in this embodiment, as described above, the intermediate shaft portion 230 (more specifically, the central axis Lc of the range corresponding to the intermediate shaft portion 230) passing through the cutout 13a is made to intersect with the line segment Lvb. Therefore, as shown in FIG. 4, the central axis Lc of the range lies more horizontally than the line segment Lvb when the vibration damping device 50 is attached at an angle to a frame-shaped structure. This makes it possible to reduce the height dimension occupied by the brace 200 compared to, for example, the brace 200' as a comparative example that is simply linear (linear along the line segment Lvb) as shown in FIG. 11. If one were to attach the brace 200' as a comparative example to a frame-shaped structure, the brace 200 would interfere with the notch 13a, as shown in Fig. 12. In other words, the brace 200' could not be attached to the frame-shaped structure, and the structure would not work.

[0091] In addition, the cross section of brace 200 shown by a solid line in Figure 11 and the cross section of brace 200' as a comparative example shown by a two-dot chain line are taken along a cutting line XX along the vertical direction passing through intersection point P. Moreover, the comparative example is not included in this embodiment.

[0092] <Movement of vibration control device> 13 and 14, the vibration control device 50 can suppress lateral vibration of the wall structure 10, such as the horizontal displacement of the upper frame 15 caused by an earthquake. Specifically, the lateral vibration of the wall structure 10 is suppressed by the damping force generated by the oil damper 100 of the vibration control device 50.

[0093] When a load due to an earthquake is input to the vibration control device 50, a force along the line segment Lvd acts on the oil damper 100 and the brace 200. When a force along the line segment Lvd (which coincides with the line segment Lvb) acts on the brace 200, the central axis Lc of the portion from the first bent portion 240 to the second bent portion 250 does not coincide with the line segment Lvb, so that this portion is more likely to deform due to a bending moment than the simply straight brace 200'. Therefore, the vibration control device 50 needs to be designed so that plastic deformation does not occur in the relevant portion of the brace 200 when a load due to an earthquake is input. To achieve this, for example, it is necessary to combine the oil damper 100, which generates a damping force that does not cause plastic deformation in the relevant portion when a load due to an earthquake is input, with the brace 200. In other words, by appropriately setting the damping force of the oil damper 100 to be combined with the brace 200, it is possible to prevent plastic deformation from occurring in the relevant portion.

[0094] Now, in the swaying wall structure 10, when each vertical frame is tilted so that the upper part is tilted about 3 degrees to the left as shown in Fig. 13, the rod 120 of the oil damper 100 generates a damping force and protrudes from the cylinder 110. At this time, the lying intermediate shaft portion 230 is not in contact with the lower part of the cutout 13a. In addition, in the swaying wall structure 10, when each vertical frame is tilted so that the upper portion is tilted about 3 degrees to the right as shown in Fig. 14, the rod 120 of the oil damper 100 enters the cylinder 110 while generating a damping force. At this time, the lying intermediate shaft portion 230 is not in contact with the upper portion of the notch 13a. Needless to say, the rod 120 of the oil damper 100 advances and retreats along the line segment Lvd.

[0095] <Variation 1> 15 conceptually illustrates the relationship between the central axis Lc and the line segment Lvb of the brace 200 described above. According to this, the brace 200 includes a first shaft portion 210 and a second shaft portion 220 that are linear along the line segment Lvb, a linear intermediate shaft portion 230 that intersects with the line segment Lvb, and a first bent portion 240 and a second bent portion 250 that are smooth and deviate from the line segment Lvb. This configuration is merely an example, and for example, as shown in Fig. 16, the brace 200 may be configured with a first shaft portion 210 and a second shaft portion 220 that are linear and deviate from the line segment Lvb, and a linear intermediate shaft portion 230 that intersects with the line segment Lvb. However, by using the configuration shown in Fig. 15, the bending moment generated in the brace 200 can be reduced. This allows the strength setting of the brace 200 against the input load to be reduced, and therefore the thickness and size of the members can be reduced.

[0096] <Variation 2> Configurations other than those shown in Figures 15 and 16 may be adopted, as long as at least the central axis Lc of the range corresponding to the portion of the brace 200 that intersects with the third vertical frame 13 intersects with the line segment Lvb.

[0097] <Effects of this embodiment> According to this embodiment, the following effects are obtained. In the brace 200, the central axis Lc of the intermediate shaft portion 230 intersects with the line segment Lvb connecting the first end portion 212 and the second end portion 222, so that the angle of the central axis Lc of the intermediate shaft portion 230 can be made different from the angle of the line segment Lvb. Therefore, when the brace 200 is disposed between the first vertical frame 11 and the second vertical frame 12, the central axis Lc of the intermediate shaft portion 230 can be made closer to the horizontal direction. This makes it possible to reduce the vertical dimension occupied by the intermediate shaft portion 230 compared to a case where the central axis Lc of the intermediate shaft portion 230 does not intersect with the line segment Lvb (for example, a case where the brace 200 is simply linear). Therefore, even if the dimension (vertical dimension) of the notch 13a provided in the third vertical frame 13 is limited, the brace 200 can intersect with the third vertical frame 13 without interfering with the third vertical frame 13.

[0098] Furthermore, by providing the brace 200 with the first bending portion 240 and the second bending portion 250, it is possible to reduce the bending moment generated in the brace 200. This allows the strength setting of the brace 200 against the input load to be reduced, and therefore allows the thickness and size of the member to be reduced.

[0099] Furthermore, by using the brace 200 in combination with the oil damper 100, the force acting on the brace 200 when a load due to an earthquake is input can be reduced.

[0100] [Second embodiment] The second embodiment of the present disclosure will be described below. The same components as those in the first embodiment are denoted by the same reference numerals and the description thereof will be omitted.

[0101] In the wall structure 10, the number of vertical frames may be increased. The added vertical frame may have the same width as the existing vertical frame, or may have a different width. An example of the wall structure 10 in which the vertical frames are increased will be described below.

[0102] As shown in FIG. 17, the wall structure 10 further includes a 1-2 vertical frame 11', a 2-2 vertical frame 12', and a 3-2 vertical frame 13'.

[0103] The 1-2 vertical frame 11' is a piece of wood extending in the vertical direction, and is provided on the upper surface of the lower frame 14. Like the first vertical frame 11, the 1-2 vertical frame 11' is a member that is subjected to a load mainly in the vertical direction. The 1-2 vertical frame 11' is disposed so as to be adjacent to the first vertical frame 11 and to be in contact with the side surface (the inner surface, the side surface facing the second vertical frame 12) of the first vertical frame 11. Therefore, the first bracket 310 is attached to the 1-2 vertical frame 11'. The dimensions of the 1-2 vertical frame 11' are determined, for example, by standards (construction methods). In the case of Fig. 17, the width is 38 mm, and the height and depth are the same as those of the 1st vertical frame 11. However, the numerical values ​​of the width are examples, and other dimensions may be used.

[0104] The 2-2 vertical frame 12' is a piece of wood extending in the vertical direction, and is provided on the upper surface of the lower frame 14. The 2-2 vertical frame 12' is a member that is subjected to loads mainly in the vertical direction, similar to the second vertical frame 12. The 2-2 vertical frame 12' is disposed so as to be adjacent to the second vertical frame 12 and so as to be in contact with the side surface (the inner surface, the side surface facing the first vertical frame 11) of the second vertical frame 12. Therefore, the second bracket 320 is attached to the 2-2 vertical frame 12'. The dimensions of the 2-2 vertical frame 12' are determined, for example, by standards (construction methods). In the case of Fig. 17, the width is 38 mm, and the height and depth are the same as those of the 2nd vertical frame 12. However, the numerical values ​​of the width are examples, and other dimensions may be used.

[0105] The 3-2 vertical frame 13' is a piece of wood extending in the vertical direction, and is provided on the upper surface of the lower frame 14. The 3-2 vertical frame 13' is a member that, like the third vertical frame 13, is mainly subjected to a vertical load. The 3-2 vertical frame 13' is positioned adjacent to the third vertical frame 13 and in contact with the side of the third vertical frame 13 (in the case of Figure 17, the left side, the side facing the first vertical frame 11). The dimensions of the 3-2 vertical frame 13' are determined, for example, by standards (construction methods). In the case of Fig. 17, the width, height, and depth dimensions are the same as those of the 3rd vertical frame 13. However, the width dimensions are merely examples, and other dimensions may be used.

[0106] As shown in FIG. 18, the 3-2 vertical frame 13' has a second notch 13a', similar to the notch 13a provided in the third vertical frame 13, to avoid interference with the brace 200 of the vibration damping device 50. The second cutout 13a' must also be provided with a pipe guard 17. Therefore, the dimensions of the second cutout 13a' (particularly the vertical dimension) are determined according to the dimensions of the pipe guard 17. In the present embodiment, the height of the second cutout 13a' is set to about 110 mm, taking into consideration the stop of the nail 24. This is based on the same design concept / design method as the cutout 13a. Also, the width of the second cutout 13a' is equal to the width of the vertical frame 13' of No. 3-2, and the depth is set to 45 mm, but these dimensions do not depend on the dimensions of the pipe guard 17. These are also based on the same design concept / design method as the cutout 13a.

[0107] The notch 13a and the second notch 13a' are provided at different positions in the vertical direction (shifted in the vertical direction) as a result of taking into consideration the shape of the brace 200 and the attitude of the vibration damping device 50. In the case of Fig. 18 where the second notch 13a' is located to the left of the notch 13a, the second notch 13a' is located above the notch 13a. By shifting the positions of the notch 13a and the second notch 13a' in the vertical direction, the degree of freedom in the arrangement of the brace 200 (for example, the inclination angle) is increased. The position of the notch 13a and the position of the second notch 13a' may be determined by an operator at the manufacturing / construction site of the wall structure 10 by matching the shape of the brace 200 and the attitude of the vibration damping device 50 with the actual object.

[0108] As described above, the distance (center-to-center pitch) between the first vertical frame 11 and the third vertical frame 13 and the distance (center-to-center pitch) between the third vertical frame 13 and the second vertical frame 12 are set to the same value of 500 mm or less (e.g., 455 mm). This pitch / positional relationship does not change even if the 1-2 vertical frame 11' and the 2-2 vertical frame 12' are added to the wall structure 10. 17, the interior dimension in the horizontal direction between the vertical frame to which the first bracket 310 is attached and the vertical frame to which the second bracket 320 is attached is smaller than that of the wall structure 10 of the first embodiment. Therefore, the inclination angle θ of the vibration damping device 50 is smaller than that of the wall structure 10 of the first embodiment. In other words, the line segment Lvd approaches the vertical.

[0109] As described above, the distance (center-to-center pitch) between the first vertical frame 11 and the third vertical frame 13 and the distance (center-to-center pitch) between the third vertical frame 13 and the second vertical frame 12 are set to the same value of 500 mm or less (e.g., 455 mm), so the third vertical frame 13 is disposed in the middle position in the horizontal direction between the first vertical frame 11 and the second vertical frame 12. This pitch / position relationship does not change even if a 3-2 vertical frame 13' is added to the wall structure 10. Therefore, when the third vertical frame 13 and the 3-2 vertical frame 13' are regarded as one columnar structure (hereinafter, the two vertical frames 13, 13' regarded as one columnar structure will be referred to as the "middle stud portion"), the middle stud portion is disposed at a position that is not midway between the first vertical frame 11 and the second vertical frame 12 in the horizontal direction. In other words, the middle stud portion is disposed at a position closer to either the first vertical frame 11 or the second vertical frame 12 in the horizontal direction. In the case of FIG. 17 in which the 3-2 vertical frame 13' is disposed so as to contact the left side of the third vertical frame 13, the middle stud portion is disposed at a position closer to the first vertical frame 11 in the horizontal direction. Conversely, when the 3-2 vertical frame 13' is disposed so as to contact the right side of the third vertical frame 13, the middle stud portion is disposed at a position closer to the second vertical frame 12 in the horizontal direction.

[0110] As shown in FIG. 18, the intermediate shaft portion 230 of the brace 200 of this embodiment is disposed in the notch 13a and the second notch 13a'. When the vibration damping device 50 is attached to the frame-shaped structure, it is preferable that the intersection point P substantially coincides with the center (horizontal center) of the intermediate stud part in the horizontal direction. Therefore, the vibration damping device 50 (for example, the dimensions and shape of the brace 200) are designed so that the intersection point P is located at the center of the intermediate stud part. In this case, considering that the intermediate stud part is located at a position closer to either the first vertical frame 11 or the second vertical frame 12 in the horizontal direction, the intersection point P is also located at a position closer to either the first vertical frame 11 or the second vertical frame 12 in the horizontal direction. This means that, as shown in FIG. 19, the distance L1 from the first device end 51 along the line segment Lvd to the intersection point P is made different from the distance L2 from the intersection point P along the line segment Lvd to the second device end 52. In other words, the intersection point P does not exist at the middle position (1 / 2 position) of the line segment Lvd. However, this is premised on the assumption that the vertical frames are not tilted by the earthquake (hereinafter referred to as the "normal state"). If the vertical frames are tilted by an earthquake, the rod 120 of the oil damper 100 advances and retreats relative to the cylinder 110 (i.e., the distance L1 becomes longer and shorter), so there is a possibility that the intersection point P will temporarily be located at the midpoint of the line segment Lvd. When looking at the vibration damping device 50 when not attached to a frame-shaped structure (when looking at the vibration damping device 50 by itself), if the oil damper 100 is set to the reference length, the intersection point P does not exist at the midpoint (1 / 2 position) of the line segment Lvd. Here, the "reference length" refers to the design standard length of the oil damper 100 assuming attachment to a frame-shaped structure in a normal state.

[0111] When the intersection P is located at the center of the third vertical frame 13 as in the first embodiment, the intersection P exists at the midpoint of the line segment Lvd. When the vibration damping device 50 is viewed in a state where it is not attached to a frame-like structure (when the vibration damping device 50 is viewed alone), if the oil damper 100 is set to the reference length, the intersection P exists at the midpoint (1 / 2 position) of the line segment Lvd. However, this is also based on the assumption that the normal state exists. If the vertical frames are tilted due to an earthquake, the rod 120 of the oil damper 100 advances and retreats relative to the cylinder 110 (i.e., the distance L1 becomes longer and shorter), and therefore the intersection point P may temporarily not be located at the midpoint of the line segment Lvd.

[0112] <About the inclination angle of the bent part> The inclination angle β of the first bent portion 240 with respect to the line segment Lvb will be described. The inclination angle of the second bent portion 250, which is point-symmetric to the first bent portion 240 with respect to the intersection point P, can be designed in the same manner as the first bent portion 240, and therefore will not be described here.

[0113] As shown in FIG. 20, the central axis Lc of the first bending portion 240 includes an arc-shaped first portion Lc1 that is connected to the central axis Lc of the first shaft portion 210 and moves away from the line segment Lvb, a straight-line second portion Lc2, and an arc-shaped third portion Lc3 that is connected to the central axis Lc of the intermediate shaft portion 230. The inclination angle β of the first bent portion 240 with respect to the line segment Lvb is the angle that the linear second portion Lc2 of the central axis Lc forms with respect to the line segment Lvb. Taking into consideration the dimensions and material of the brace 200, this inclination angle β is set to, for example, 8 degrees or more and 14 degrees or less, and preferably 12 degrees.

[0114] A method for determining the inclination angle β will be described below. In FIG. 21, for the sake of explanation, the Y axis is set as the axis along the line segment Lvb, and the X axis is set as the axis perpendicular to the Y axis. Moreover, the inclination angle α (see FIG. 10) is set to 30 degrees. Further, a point where an extension line of the central axis Lc of the intermediate shaft portion 230 and an extension line of the second portion Lc2 of the central axis Lc of the first bent portion 240 intersect is defined as an intersection point Q. Also, An extension line of the second portion Lc2 of the central axis Lc of the first bent portion 240 and the line segment Lvb intersect at a point of intersection R. A portion in the vicinity of the intersection R is referred to as a base end portion of the first bent portion 240. Moreover, the length in the Y-axis direction from intersection point Q to intersection point R (Y-axis component) is defined as arm length V. Moreover, the load of the X-axis component acting on the intersection point Q is defined as an X-component load Fx. This X-component load Fx is caused by a load input to the brace 200 (a load along the central axis Lc). Moreover, the distance in the X-axis direction from intersection point P to intersection point Q (X-axis component) is defined as distance Dx. The center line of the middle stud portion is set as a reference line Ld. Note that the reference line Ld is different from the center line of the third vertical frame 13. 1. Moreover, the angle that the line segment Lvb forms with respect to the reference line Ld is equal to the inclination angle θ shown in FIG.

[0115] First, the distance Dx is determined. Distance Dx is also the amount of misalignment, and is preferably small, and is set, for example, so that an imaginary rod-shaped portion 400 connecting first shaft portion 210 and second shaft portion 220 overlaps with a portion of first bent portion 240 including intersection point Q. The central axis of rod-shaped portion 400 coincides with line segment Lvb. However, if the distance Dx is set too small, the brace 200 will interfere with the middle stud portion, so it is necessary to set the distance Dx so that the brace 200 does not interfere with the middle stud portion. The distance Dx may have a range, but for convenience, it is preferable to set the distance Dx to a fixed value.

[0116] Next, a minimum value of the inclination angle θ is set so that the brace 200 does not interfere with the notch 13a and the second notch 13a′ of the intermediate stud portion at the determined distance Dx. Incidentally, the inclination angle θ is set to, for example, about 15 degrees or more and 25 degrees or less, which indicates a preferable attitude (inclination angle) of the vibration damping device 50 from the viewpoint of fully exerting the damping function of the vibration damping device 50. On the other hand, the minimum value of the inclination angle θ determined here is merely a numerical value for determining the inclination angle β, and may be less than 15 degrees.

[0117] Next, at the minimum value of the determined distance Dx and inclination angle θ, the range of inclination angle β is determined such that the bending moment acting around intersection point R, i.e., the bending moment acting on the base end portion of first bending portion 240, falls within the design tolerance range. Here, the bending moment is calculated by arm length V [m] x X component load Fx [N]. Since the distance Dx is fixed, when the inclination angle β is decreased, the arm length V is increased, and when the inclination angle β is increased, the arm length V is decreased. In addition, the bending moment acting on the base end portion of the first bending portion 240 is preferably as small as possible.

[0118] Since interference with the notch 13a of the intermediate stud portion and the second notch 13a' is taken into consideration in the process of determining the inclination angle β, as shown in Figure 22, even if, for example, the 3-2 vertical frame 13' is omitted from the intermediate stud portion shown in Figure 17 (i.e., the brace 200 intersects only with the third vertical frame 13), the brace 200 will naturally not interfere with the notch 13a provided in the third vertical frame 13.

[0119] <Variation 3> The number of vertical frames of the wall structure 10 can be increased or decreased as appropriate. For example, as shown in FIG. 23, the vertical frame 11' of 4 and the vertical frame 12' of 2-2 may be omitted from the wall structure 10 shown in FIG. Also, for example, as shown in FIG. 24, the width dimension of the first vertical frame 11 may be reduced and a 1-3 vertical frame 11'' may be provided next to the 1-2 vertical frame 11', and the width dimension of the second vertical frame 12 may be reduced and a 2-3 vertical frame 12'' may be provided next to the 2-2 vertical frame 12'. In this case, the width dimension of each vertical frame may be, for example, 38 mm. However, these numerical values ​​are merely examples and other dimensions may be used.

[0120] <Modification 4> The position of the vertical frame added to the wall structure 10 can be changed as appropriate. For example, the 1-2nd vertical frame 11' may be disposed adjacent to the first vertical frame 11 and in contact with the side surface (outer surface, the surface opposite the side surface facing the second vertical frame 12) of the first vertical frame 11. In this case, the first bracket 310 is attached to the first vertical frame 11. Also, the 2-2 vertical frame 12' may be disposed adjacent to the second vertical frame 12 and in contact with the side surface (outer surface, the surface opposite the side surface facing the first vertical frame 11) of the second vertical frame 12. In this case, the second bracket 320 is attached to the second vertical frame 12. In addition, the 3-2 vertical frame 13' may be positioned adjacent to the third vertical frame 13 and in contact with the side of the third vertical frame 13 (the right side, the side facing the second vertical frame 12).

[0121] <Effects of this embodiment> According to this embodiment, the following effects are obtained. By shifting the positions of the notch 13a and the second notch 13a' in the vertical direction, the degree of freedom in the arrangement of the brace 200 (for example, the inclination angle) can be increased.

[0122] Furthermore, by shifting the intersection point P from the midpoint of the line segment Lvd, even if the 3-2nd vertical frame 13' is added, the vibration control device 50 (brace 200) can be installed without interfering with the cutout 13a and the second cutout 13a'.

[0123] Furthermore, the inclination angle β of the first bending portion 240 and the inclination angle β of the second bending portion 250 relative to the line segment Lvb are set to be greater than or equal to 8 degrees and less than or equal to 14 degrees, and preferably 12 degrees, so that the bending moment acting on the base end portion of the first bending portion 240 and the base end portion of the second bending portion 250 can be suppressed. [Explanation of symbols]

[0124] 10 Wall structure 11 First vertical frame (first structural member) 12 Second vertical frame (second structural member) 13 Third vertical frame 13a Cutout 11' 1st-2nd vertical frame 12' 2nd-2nd vertical frame 13' 3rd-2nd vertical frame 13a' Second notch 11'' 1st-3rd vertical frames 12'' 2nd-3rd vertical frame 14 Bottom frame 15 Upper frame 16 Panel material 17 Pipe guard (cover) 18 Insulation 21 Nails (for panel materials) 22 Screw (for first bracket) 23 Screw (for second bracket) 24 Nails (for pipe guard) 50 Vibration control device 51 1st device end 52 Second device end 100 Oil Damper 110 Cylinder 120 Rod 200 Brace (reinforcement member) 210 First shaft 211 Connection Part 212 First end 220 Second shaft 221 Rod part 222 Second end 230 Intermediate shaft 240 First bending section 250 Second bending section 310 First Bracket 320 Second Bracket Lc center axis Lvb line (imaginary line in brace) Lvd line (imaginary line in the vibration control device)

Claims

1. A rod-shaped reinforcing member having a first end portion disposed on a first structural member side and a second end portion disposed on a second structural member side, a first shaft portion having the first end; a second shaft having the second end; an intermediate shaft portion located between the first shaft portion and the second shaft portion; Equipped with a central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end at an intersection point, The intersection is located between an end of the first shaft portion on the second shaft portion side and an end of the second shaft portion on the first shaft portion side (excluding both ends). Reinforcing material.

2. a first bent portion that smoothly connects the first shaft portion and the intermediate shaft portion; a second bent portion that smoothly connects the second shaft portion and the intermediate shaft portion; Equipped with The first shaft portion extends along the line segment, The second shaft portion extends along the line segment. the first bent portion has one end connected to the first shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; the second bent portion has one end connected to the second shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; A direction in which the first bent portion deviates from the line segment is opposite to a direction in which the second bent portion deviates from the line segment. The reinforcing member according to claim 1 .

3. A rod-shaped reinforcing member having one end, a first end, disposed on a first structural member side and the other end, a second end, disposed on a second structural member side, a first shaft portion having the first end; a second shaft having the second end; an intermediate shaft portion located between the first shaft portion and the second shaft portion; a first bent portion that smoothly connects the first shaft portion and the intermediate shaft portion; a second bent portion that smoothly connects the second shaft portion and the intermediate shaft portion; Equipped with a central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end at an intersection point, The first shaft portion extends along the line segment, The second shaft portion extends along the line segment. the first bent portion has one end connected to the first shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; the second bent portion has one end connected to the second shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; A direction in which the first bent portion deviates from the line segment is opposite to a direction in which the second bent portion deviates from the line segment. Reinforcing material.

4. A rod-shaped reinforcing member having one end, a first end, disposed on a first structural member side and the other end, a second end, disposed on a second structural member side, a first shaft portion having the first end; a second shaft having the second end; an intermediate shaft portion located between the first shaft portion and the second shaft portion; Equipped with a central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end at an intersection point, The central axis of the first shaft portion extends along the line segment, The central axis of the second shaft portion extends along the line segment, The shape of the central axis of a portion including the intermediate shaft portion from the end of the first shaft portion on the second shaft portion side to the end of the second shaft portion on the first shaft portion side is point symmetrical with respect to the intersection point. Reinforcing material.

5. The shape from the first bent portion to the second bent portion is point symmetric with respect to the intersection point. The reinforcing member according to claim 3 .

6. The length of the portion from the first bent portion to the second bent portion along the line segment is set to be 15% or more and 30% or less of the entire length along the line segment. The reinforcing member according to claim 3 .

7. The inclination angle of the central axis of the first bent portion with respect to the line segment and the inclination angle of the central axis of the second bent portion with respect to the line segment are set to be equal to or greater than 8 degrees and equal to or less than 14 degrees. The reinforcing member according to claim 3 .

8. The inclination angle of the central axis of the first bent portion with respect to the line segment and the inclination angle of the central axis of the second bent portion with respect to the line segment are set to about 12 degrees. The reinforcing member according to claim 7.

9. The inclination angle of the central axis of the intermediate shaft portion with respect to the line segment is set to be equal to or greater than 20 degrees and equal to or less than 45 degrees. The reinforcing member according to claim 1 .

10. The inclination angle of the central axis of the intermediate shaft portion with respect to the line segment is set to about 30 degrees. The reinforcing member according to claim 9.

11. The reinforcing member according to claim 1 ; A damper that generates a damping force; Equipped with The damper is connected to the first end. Vibration control device.

12. The reinforcing member according to claim 2; A damper that generates a damping force; Equipped with the damper is connected to the first end; The damper has a damping force set so that no plastic deformation occurs in a portion from the first bent portion to the second bent portion when a load is input. Vibration control device.

13. A reinforcing member according to claim 3, A damper that generates a damping force; Equipped with The damper is connected to the first end. Vibration control device.

14. A vibration damping device; A first structural member; A second structural member; and Equipped with The vibration damping device is A reinforcing member; A damper that generates a damping force; Equipped with the reinforcing member is a rod-shaped member having a first end portion which is one end portion arranged on the first structural member side and a second end portion which is the other end portion arranged on the second structural member side, a first shaft portion having the first end; a second shaft having the second end; an intermediate shaft portion located between the first shaft portion and the second shaft portion; Equipped with The central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end at an intersection point, the damper is connected to the first end; The first structural member is a first vertical frame extending in a vertical direction, the second structural member is a second vertical frame extending vertically and spaced apart from the first vertical frame in the horizontal direction; a third vertical frame provided between the first vertical frame and the second vertical frame in the horizontal direction and extending in the vertical direction; The damper is connected to an upper part or a lower part of the first vertical frame, The second end of the reinforcing member is connected to a lower portion or an upper portion of the second vertical frame, The intermediate shaft portion of the reinforcing member intersects with the third vertical frame. Wall structure.

15. The third vertical frame is provided with a notch formed so as to be recessed in a depth direction perpendicular to the vertical direction and the horizontal direction, The intermediate shaft portion of the reinforcing member is disposed in the notch of the third vertical frame.

15. The wall structure of claim 14.

16. A vibration damping device; A first structural member; A second structural member; and Equipped with The vibration damping device is A reinforcing member; A damper that generates a damping force; Equipped with the reinforcing member is a rod-shaped member having a first end portion which is one end portion arranged on the first structural member side and a second end portion which is the other end portion arranged on the second structural member side, a first shaft portion having the first end; a second shaft having the second end; an intermediate shaft portion located between the first shaft portion and the second shaft portion; Equipped with The central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end at an intersection point, the damper is connected to the first end; The first structural member is a first vertical frame extending in a vertical direction, the second structural member is a second vertical frame extending vertically and spaced apart from the first vertical frame in the horizontal direction; a third vertical frame disposed between the first vertical frame and the second vertical frame in the horizontal direction and extending in the vertical direction; A third-2 vertical frame is provided next to the third vertical frame in the horizontal direction and extends in the vertical direction; Equipped with The damper is connected to an upper part or a lower part of the first vertical frame, The second end of the reinforcing member is connected to a lower portion or an upper portion of the second vertical frame, The third vertical frame is provided with a notch formed so as to be recessed in a depth direction perpendicular to the vertical direction and the horizontal direction, The 3-2 vertical frame is provided with a second notch formed so as to be recessed in a depth direction perpendicular to the vertical and horizontal directions, The intermediate shaft portion of the reinforcing member is disposed in the notch of the third vertical frame and the second notch of the 3-2 vertical frame. Wall structure.

17. The notch of the third vertical frame and the second notch of the 3-2 vertical frame have the same vertical dimension and different vertical positions.

17. A wall structure according to claim 16.

18. The central axis of the intermediate shaft portion of the reinforcing member lies horizontally relative to the line segment.

17. A wall structure according to claim 14 or 16.

19. A metal cover is provided to cover the notch and / or the second notch.

17. A wall structure according to claim 15 or 16.

20. A panel material is provided in common on a surface of the first vertical frame, a surface of the second vertical frame, and a surface of the third vertical frame opposite to the surface on which the cover is provided.

20. The wall structure of claim 19.

21. When the end of the damper connected to the upper or lower part of the first vertical frame is defined as a first device end, and the second end connected to the lower or upper part of the second vertical frame is defined as a second device end, The intersection is on a second line segment connecting the first device end and the second device end, and is located at a midpoint of the second line segment.

17. A wall structure according to claim 14 or 16.

22. When the end of the damper connected to the upper or lower part of the first vertical frame is defined as a first device end, and the second end connected to the lower or upper part of the second vertical frame is defined as a second device end, The intersection is on a second line segment connecting the first device end and the second device end, and is not at a midpoint of the second line segment.

17. A wall structure according to claim 14 or 16.

23. The wall structure according to claim 14 or 16 is provided. Wooden house.

24. a first shaft portion having a first end portion disposed on a first structural member side; a second shaft portion having a second end portion disposed on a second structural member side; an intermediate shaft portion located between the first shaft portion and the second shaft portion; Equipped with a central axis of the intermediate shaft portion intersects with a line segment connecting the first end and the second end at an intersection point, a method for manufacturing a reinforcing member, the intersection being located between an end of the first shaft portion on the second shaft portion side and an end of the second shaft portion on the first shaft portion side (excluding each of the ends), The first shaft portion, the second shaft portion, and the intermediate shaft portion are formed by bending a single tubular metal material. A method for manufacturing a reinforcing member.

25. A first shaft portion having a first end portion disposed on a first structural member side; a second shaft portion having a second end portion disposed on a second structural member side; an intermediate shaft portion located between the first shaft portion and the second shaft portion; a first bent portion that smoothly connects the first shaft portion and the intermediate shaft portion; a second bent portion that smoothly connects the second shaft portion and the intermediate shaft portion; Equipped with a central axis of the intermediate shaft portion intersects with a line segment connecting the first end portion and the second end portion, The first shaft portion extends along the line segment, The second shaft portion extends along the line segment. the first bent portion has one end connected to the first shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; the second bent portion has one end connected to the second shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; A method for manufacturing a reinforcing member, wherein a direction in which the first bent portion deviates from the line segment is opposite to a direction in which the second bent portion deviates from the line segment, The first shaft portion, the second shaft portion, and the intermediate shaft portion are formed by bending a single tubular metal material. A method for manufacturing a reinforcing member.

26. a first shaft portion having a first end portion disposed on a first structural member side; a second shaft portion having a second end portion disposed on a second structural member side; an intermediate shaft portion located between the first shaft portion and the second shaft portion; a first bent portion that smoothly connects the first shaft portion and the intermediate shaft portion; a second bent portion that smoothly connects the second shaft portion and the intermediate shaft portion; Equipped with a central axis of the intermediate shaft portion intersects with a line segment connecting the first end portion and the second end portion, The first shaft portion extends along the line segment, The second shaft portion extends along the line segment, the first bent portion has one end connected to the first shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; the second bent portion has one end connected to the second shaft portion and the other end connected to the intermediate shaft portion, and extends so as to deviate from the line segment; A method for manufacturing a reinforcing member, wherein a direction in which the first bent portion deviates from the line segment is opposite to a direction in which the second bent portion deviates from the line segment, An inclination angle of the central axis of the first bent portion with respect to the line segment and an inclination angle of the central axis of the second bent portion with respect to the line segment are determined based on bending moments acting on a base end portion of the first bent portion and a base end portion of the second bent portion. A method for manufacturing a reinforcing member.

27. A method for manufacturing a wall structure according to claim 16, comprising the steps of: The second cutout is provided at a position different from that of the first cutout in the vertical direction. A method for manufacturing a wall structure.

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