Wall structure

Abstract

The present invention provides a wall structure that has high strength against compressive forces on the diagonal members and is equipped with a mechanism that allows the length of the diagonal members to be appropriately adjusted to suit the frame. [Solution] The wall structure 100 comprises a rectangular frame K composed of vertical frames 8,8 and horizontal frames 9,9, four diagonal members 7 with one end connected to each of the corners C of the frame K, a connecting fitting 1 positioned in the central part of the rectangle of the frame K to which the other ends of the diagonal members 7 are connected, and an adjustment mechanism 5 for adjusting the length of the connection portion between the connecting fitting 1 and the diagonal members 7 in the direction along the extending direction of the diagonal members 7. The diagonal members 7 have diagonal member-side end plates 71 at their other ends, the connecting fitting 1 has fitting-side end plates 11, and the adjustment mechanism 5 includes a threaded portion 61 that connects the diagonal member-side end plate 71 and the fitting-side end plate 11. The threaded portion 61 is positioned along the extending direction of the diagonal members 7, and the diagonal member-side end plate 71 and the fitting-side end plate 11 are connected by three or more threaded portions 61.

Description

Technical Field

[0001] The present invention relates to a wall structure.

Background Art

[0002] Patent Document 1 discloses a vibration damping device. This vibration damping device has four braces extending radially from vibration dampers disposed inside a rectangular frame formed in a rectangular shape in a front view by four constituent members constituting a building, and the vibration dampers and the rectangular frame are connected by these braces. The vibration energy causing the rectangular frame to deform is absorbed by the plastic deformation of the vibration dampers to which this vibration energy is transmitted via the braces, thereby suppressing vibration. The vibration dampers are made of aluminum or an aluminum alloy. In this vibration damping device, the vibration energy causing the rectangular frame of the building to deform can be absorbed by the plastic deformation of the vibration dampers disposed inside the rectangular frame, thereby suppressing vibration. The rectangular frame in which this vibration damping device is disposed is a portion that becomes a wall of the building.

[0003] In this vibration damping device, of the four braces, two braces that are not arranged opposite to each other with the vibration dampers sandwiched therebetween are provided with length adjusting means. This length adjusting means is composed of a turnbuckle type means including a screw shaft member disposed between two divided main bodies formed by dividing the main body of the brace, with one side having a right thread and the other side having a left thread, and two nut members to which the right thread and the left thread of this screw shaft member are screwed and which are coupled to the divided main bodies.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In wall structures like the one exemplified in the disclosure of Patent Document 1, that is, wall structures including a rectangular frame and diagonal members, there have been cases where existing diagonal members were replaced with a new structure including new diagonal members with higher seismic resistance in order to improve the strength of the existing wall structure, specifically for example, to improve seismic resistance. When such replacement work is carried out, it was sometimes necessary to adjust the length of the new diagonal members in the structure to suit the existing frame. However, adjustment methods such as the turnbuckle type were not sufficient to improve the strength of the wall structure when the frame deforms and compressive forces or bending moments (hereinafter referred to as compressive forces, etc.) are applied to the diagonal members. Therefore, there is a need for a wall structure that has high strength against compressive forces, etc. and is equipped with an adjustment mechanism that can appropriately adjust the length of the diagonal members to suit the frame.

[0006] This invention has been made in view of the above circumstances, and its purpose is to provide a wall structure that has high strength against compressive forces on the diagonal members and a mechanism that allows the length of the diagonal members to be appropriately adjusted to suit the frame. [Means for solving the problem]

[0007] The wall structure according to the present invention, for achieving the above objective, A rectangular frame structure consisting of a pair of vertical frames and a pair of horizontal frames, Four diagonal members, one end of which is connected to each of the corners of the frame, A connecting fitting is provided, which is positioned in the central part of the rectangle of the frame and to which the other end of the diagonal member is connected. The system includes an adjustment mechanism for adjusting the length of the connection portion between the connecting fitting and the diagonal member in a direction along the extending direction of the diagonal member, The aforementioned diagonal member is, Its extension direction is aligned with the extension direction of the diagonal of the frame, The other end has a diagonal member side end plate that is connected to the connecting fitting, The aforementioned connecting fitting has a fitting-side end plate to which the diagonal member-side end plate is connected, The adjustment mechanism is, The aforementioned diagonal member side end plate, The aforementioned end plate on the fitting side, Includes a screw portion that adjusts the distance separating the diagonal member side end plate and the fitting side end plate, and connects the diagonal member side end plate and the fitting side end plate, The threaded portion is arranged along the extending direction of the diagonal member, The diagonal member side end plate and the metal fitting side end plate are connected by three or more threaded portions.

[0008] In the wall structure according to the present invention, The diagonal member side end plate and the fitting side end plate may be plate-shaped members perpendicular to the extending direction of the diagonal member.

[0009] In the wall structure according to the present invention, The diagonal member side end plate has a diagonal member side through hole along the extending direction of the diagonal member, The end plate on the metal fitting side has a metal fitting side through hole along the extending direction of the diagonal member, The threaded portion is inserted through the through hole on the diagonal member side and the through hole on the fitting side. The threaded portion and the diagonal member side end plate, and the threaded portion and the metal fitting side end plate, may each be fixed in position with a nut.

[0010] In the wall structure according to the present invention, The aforementioned diagonal member may be made of steel pipe.

[0011] In the wall structure according to the present invention, The connecting fitting may have a shear force absorbing portion that absorbs shear force along the extending direction of the vertical frame.

[0012] In the wall structure according to the present invention, The shear force absorbing section has a U-shape when the frame is viewed from the front, and the U-shape is arranged along the vertical direction. One of the flat plate portions of the U-shape in the shear force absorbing portion is connected to the diagonal member on one side in the width direction of the frame. The other flat plate portion of the U-shape in the shear force absorbing portion may be connected to the diagonal member on the other side in the width direction of the frame.

Advantages of the Invention

[0013] According to the present invention, it is possible to provide a wall structure provided with a mechanism that has high strength against compressive forces and the like applied to diagonal members and can appropriately adjust the length of the diagonal members to suit the frame.

Brief Description of the Drawings

[0014] [Figure 1] It is a front view of the wall structure of the present embodiment. [Figure 2] It is an explanatory diagram of the wall structure deformed by the application of in-plane shear force. [Figure 3] It is a side view of the diagonal member. [Figure 4] It is a side view of the diagonal member seen from an angle different from that of FIG. 3. [Figure 5] It is a view of the end plate on the diagonal member side as seen from a perspective looking vertically down on its plate surface. [Figure 6] It is a front view of the connecting fitting. [Figure 7] It is a top view of the connecting fitting. [Figure 8] It is a side view of the connecting fitting. [Figure 9] It is a front view of the state where the diagonal member and the connecting fitting are connected. [Figure 10] It is a perspective view of the adjustment mechanism. [Figure 11] It is a front view of another connecting fitting.

Modes for Carrying Out the Invention

[0015] Based on the drawings, the wall structure according to the embodiment of the present invention will be described.

[0016] Figure 1 shows the wall structure 100 according to this embodiment. Figure 2 shows the state of the wall structure 100 after deformation due to an in-plane shear force. Figures 1 and 2 are front views of the wall structure 100.

[0017] The wall structure 100 comprises a rectangular frame K composed of a pair of vertical frames 8,8 and a pair of horizontal frames 9,9, four diagonal members 7, one end of which is connected to each of the corners C of the frame K, a connecting fitting 1 positioned in the central part of the rectangle of the frame K to which the other ends of the diagonal members 7 are connected, and an adjustment mechanism 5 that adjusts the length of the connection portion between the connecting fitting 1 and the diagonal members 7 in the direction along the extending direction of the diagonal members 7. The diagonal member 7 is positioned with its extending direction aligned with the diagonal direction of the frame K, and has a diagonal member-side end plate 71 at its other end that is connected to the connecting fitting 1. The connecting fitting 1 has a fitting-side end plate 11 to which the diagonal member-side end plate 71 is connected. The adjustment mechanism 5 includes the diagonal member-side end plate 71, the fitting-side end plate 11, and a threaded portion 61 that adjusts the distance separating the diagonal member-side end plate 71 and the fitting-side end plate 11, and connects the diagonal member-side end plate 71 and the fitting-side end plate 11. The threaded portion 61 is positioned along the extending direction of the diagonal member 7, and the diagonal member-side end plate 71 and the fitting-side end plate 11 are connected by three or more threaded portions 61.

[0018] The wall structure 100 is equipped with an adjustment mechanism 5 that allows the length of the diagonal members 7 to be appropriately adjusted to suit the frame K, and this adjustment mechanism 5 has high strength against compressive forces and bending moments (hereinafter referred to as compressive forces, etc.) on the diagonal members 7. In other words, the wall structure 100 makes it possible to appropriately adjust the length of the diagonal members 7 to suit the frame K using the adjustment mechanism 5, and this adjustment mechanism 5 has high strength against compressive forces, etc. on the diagonal members 7.

[0019] The following provides a detailed description of wall structure 100.

[0020] The wall structure 100 can be used, for example, as the structure of a building's walls. The building may consist of a reinforced concrete foundation, a frame structure composed of framing members such as columns and beams, and panels forming walls and floors, and a superstructure fixed to the foundation. The framing members and panels can be pre-standardized. In this case, the framing members and other components can be manufactured in a factory beforehand and transported to the construction site for assembly. The wall structure 100 may be incorporated as part of a newly constructed building, or it may be added to an existing building.

[0021] As shown in Figure 1, the wall structure 100 comprises a rectangular frame K consisting of a pair of vertical frames 8,8 and a pair of horizontal frames 9,9, four diagonal members 7, connecting fittings 1, and an adjustment mechanism 5. In a building, the wall structure 100 can be constructed as a so-called load-bearing wall. The wall structure 100 may be made of metal such as steel or an iron alloy such as stainless steel.

[0022] Vertical frames 8,8 are, for example, columns whose extension direction is aligned vertically (same as the vertical direction). Vertical frames 8,8 are arranged parallel to each other.

[0023] The horizontal frames 9,9 are, for example, the upper and lower beams, whose extension direction is aligned horizontally. The horizontal frames 9,9 are arranged parallel to each other.

[0024] In this embodiment, the downward direction, which is the same direction as the vertical direction, will be simply referred to as "down," and the upward direction will be simply referred to as "up." In addition, in the frame K, the direction from one vertical frame 8 to the other vertical frame 8 will be referred to as the width direction. In this embodiment, the viewpoint from which the view is seen from above to below will be referred to as the top view. In addition, the viewpoint from which the rectangle of the frame K is seen from the front will be referred to as the front view. In addition, the viewpoint viewed in the width direction will be referred to as the side view. Furthermore, for the convenience of explanation in the following description, when one side of the width direction is described, it will mean the left side in the width direction, based on the state shown in Figure 1, and the other side will mean the right side.

[0025] The diagonal member 7 is a long frame member arranged along the direction of extension of the diagonal of the rectangle of the frame K. The diagonal member 7 may be bent (eccentrically) by an angle of 0° to 5° relative to the diagonal of the rectangle of the frame K. In this embodiment, "long" refers to an elongated shape in which the length is sufficiently long relative to the width. One end of the diagonal member 7 is connected to the corner C of the frame K, and the other end is connected to the connecting fitting 1.

[0026] As shown in Figures 3 and 4, the diagonal member 7 has a connecting portion 79 at one end of its main body 70, which has a structure (for example, a through hole) for connecting to a corner C (see Figure 1), and a diagonal member side end plate 71 at the other end that connects to the connecting fitting 1. The main body 70 may be a steel pipe such as a square steel pipe or a round steel pipe. Note that Figures 3 and 4 are side views of the diagonal member 7 viewed at angles that are 90° different from each other.

[0027] The diagonal member end plate 71 is a plate-shaped member as shown in Figures 3 to 5, and is fixed to the end of the main body 70 by welding or the like, perpendicular to the extending direction of the main body 70. In this embodiment, an end plate is a plate material attached to a material perpendicular to the extending direction of that material. The diagonal member end plate 71 may be a member with a rectangular plate surface, as shown in Figure 5. Figure 5 is a view of the diagonal member end plate 71 from a viewpoint looking vertically down at its plate surface.

[0028] The diagonal member end plate 71 has at least three diagonal member through holes 71H that penetrate perpendicularly through the plate surface. Since the diagonal member end plate 71 is perpendicular to the main body 70, the diagonal member through holes 71H are through holes that are aligned with the extending direction of the diagonal member 7.

[0029] In this embodiment, an example is shown in which four diagonal member-side through holes 71H are formed in the diagonal member-side end plate 71. These four diagonal member-side through holes 71H may be arranged towards the rectangular corners of the diagonal member-side end plate 71.

[0030] As shown in Figure 1, the connecting fitting 1 is supported by the frame K via four diagonal members 7. The connecting fitting 1 is positioned in the central part of the area enclosed by the frame K.

[0031] The connecting fitting 1 is positioned approximately on the same plane as the frame K. That is, the connecting fitting 1 is positioned approximately at the same depth as the vertical frames 8,8 and the horizontal frames 9,9. Specifically, when the wall structure 100 is viewed from the side, the connecting fitting 1 is positioned in a position that overlaps with the vertical frames 8,8. Also, when the wall structure 100 is viewed from above, the connecting fitting 1 is positioned in a position that overlaps with the horizontal frames 9,9.

[0032] The connecting fitting 1 includes a connecting plate portion 10 which is a plate-shaped member parallel to the width direction and the vertical direction, four fitting-side end plates 11 which are arranged on the outer circumference of the connecting plate portion 10 and fixed to the connecting plate portion 10 by welding or the like, and shear force absorbing portions 2, 2 which absorb shear force along the extending direction of the vertical frame 8. Figure 6 shows the connecting fitting 1 in a front view. Figure 7 shows the connecting fitting 1 in a top view. Figure 8 shows the connecting fitting 1 in a side view. Figure 9 shows the diagonal member 7 connected to the connecting fitting 1 in a front view.

[0033] As shown in Figures 1 and 6 to 8, the connecting plate portion 10 of this embodiment is divided into two parts in the width direction. Specifically, the connecting plate portion 10 has a plate portion 10A located on one side in the width direction and a plate portion 10A located on the other side in the width direction. In this embodiment, a pair of shear force absorbing portions 2,2 are arranged vertically between one plate portion 10A and the other plate portion 10A.

[0034] One plate portion 10A is fixed to one side of the shear force absorbing portion 2,2 in the width direction. The other plate portion 10A is fixed to the other side of the shear force absorbing portion 2,2 in the width direction.

[0035] Reinforcing ribs 19 may be arranged on the surface of the connecting plate portion 10 (plate portion 10A), with the ribs standing perpendicular to the plate surface.

[0036] The metal fitting side end plate 11 is a plate-shaped member to which the diagonal member side end plate 71 is connected. As shown in Figures 6 to 8, the metal fitting side end plate 11 is fixed to the outer circumference of the connecting plate portion 10 with its plate surface perpendicular to the connecting plate portion 10.

[0037] Furthermore, as shown in Figure 9, the end plate 11 on the metal fitting side has its plate surface perpendicular to the extending direction of the main body 70 of the diagonal member 7. In other words, the plate surfaces of the four end plates 11 on the metal fitting side fixed to the connecting plate portion 10 each face the four corners C of the frame K, with the plate surface on the side separated from the connecting plate portion 10 facing the four corners C of the frame K.

[0038] As shown in Figures 6 to 8, the metal fitting side end plate 11 may be a rectangular-shaped member, similar to the diagonal member side end plate 71 (see Figure 5).

[0039] The end plate 11 on the metal fitting side has at least three metal fitting side through holes 11H that penetrate perpendicularly through the plate surface. As shown in Figure 9, the end plate 11 on the metal fitting side is perpendicular to the main body 70 of the diagonal member 7, so the diagonal member side through holes 71H (see Figure 5) become through holes along the extending direction of the diagonal member 7.

[0040] In this embodiment, as shown in Figures 6 to 8, an example is given in which four metal fitting-side through holes 11H are formed in the metal fitting-side end plate 11. These four metal fitting-side through holes 11H may be arranged towards the rectangular corners of the metal fitting-side end plate 11.

[0041] As shown in Figure 9, when the diagonal member end plate 71 is connected to the metal fitting side end plate 11, the diagonal member side through hole 71H (see Figure 5) and the metal fitting side through hole 11H (see Figure 6) overlap when viewed from a perspective perpendicular to the plate surfaces of the metal fitting side end plate 11 and the diagonal member side end plate 71.

[0042] As shown in Figure 2, the shear force absorption section 2 is an energy absorption mechanism that absorbs, buffers, or reduces the speed of relative movement of the shear force (energy) when the vertical frames 8, 8 move relative to each other along their extending direction by its own deformation.

[0043] As shown in Figure 9, the shear force absorbing section 2 has a U-shape when viewed from the front of the frame K (see Figure 1), with a curved section 29 and flat sections 20, 20 extending from both ends of the curved section 29.

[0044] The shear force absorbing section 2 has its outer surface of one flat plate section 20 and the outer surface of the other flat plate section 20 fixed to the end of one plate section 10A in the width direction and the end of the other plate section 10A in the width direction by welding or the like.

[0045] The shear force absorbing section 2 has a U-shape that is arranged along the vertical direction. One flat plate section 20 of the U-shape in the shear force absorbing section 2 is connected to the diagonal member 7 on one side via one plate section 10A. The other flat plate section 20 of the U-shape in the shear force absorbing section 2 is connected to the diagonal member 7 on the other side via the other plate section 10A.

[0046] In the connecting fitting 1 of this embodiment, the shear force absorbing parts 2,2 are arranged along the vertical direction. These shear force absorbing parts 2,2 are arranged with their curved portions 29,29 facing each other.

[0047] The shear force absorbing section 2 works by having one flat plate section 20 and the other flat plate section 20 move relative to each other along the vertical direction of their U-shape. This causes the curved section 29 and the end of the flat plate section 20 connected thereto on the curved section 29 side to deform, thereby absorbing, buffering, or slowing down the shear force (energy) when the vertical frames 8, 8 move relative to each other along their extending direction (see Figure 2).

[0048] The adjustment mechanism 5 shown in Figures 1, 9, and 10 is a mechanism that adjusts and defines the distance between the diagonal member-side end plate 71 and the fitting-side end plate 11. Figure 10 is a perspective view of the adjustment mechanism 5 and its vicinity to illustrate the adjustment mechanism 5. In the wall structure 100, the adjustment mechanism 5 allows the length of the diagonal member 7 (see Figures 9 and 10) to be appropriately adjusted to suit the frame K (see Figure 1).

[0049] As shown in Figures 9 and 10, the adjustment mechanism 5 may include a diagonal member side end plate 71, a fitting side end plate 11, and a threaded portion 61 that adjusts the distance separating the diagonal member side end plate 71 and the fitting side end plate 11, and connects the diagonal member side end plate 71 and the fitting side end plate 11.

[0050] In the adjustment mechanism 5, the threaded portion 61 is arranged along the extending direction of the main body 70 of the diagonal member 7. The threaded portion 61 may be, for example, a bolt, and may have a bolt head 62 and a threaded body 63 on which threads are formed.

[0051] In the adjustment mechanism 5, the threaded portion 61 has its screw body 63 inserted through the diagonal member side through hole 71H (see Figure 5) and the metal fitting side through hole 11H (see Figure 10, etc.). At this time, since the diagonal member side through hole 71H and the metal fitting side through hole 11H are formed as through holes along the extending direction of the diagonal member 7, the screw body 63 is aligned along the extending direction of the diagonal member. The position of the threaded portion 61 and the diagonal member side end plate 71 is fixed by a nut 66 that is screwed onto the screw body 63. The position of the threaded portion 61 and the metal fitting side end plate 11 is fixed by a nut 65 that is screwed onto the screw body 63.

[0052] In Figure 9, the bolt head 62 of the threaded portion 61 is positioned on the side of the diagonal member end plate 71. The threaded portion 61 and the diagonal member end plate 71 are fixed in position by sandwiching the diagonal member end plate 71 between the bolt head 62 and the nut 66. The threaded portion 61 and the metal fitting end plate 11 are fixed in position by sandwiching the metal fitting end plate 11 between nuts 65, 65. In the adjustment mechanism 5, the diagonal member end plate 71 and the metal fitting end plate 11 are connected via the threaded portion 61 in the manner described above.

[0053] The distance between the diagonal member-side end plate 71 and the fitting-side end plate 11 can be adjusted by changing the fixing position of the diagonal member-side end plate 71 or the fitting-side end plate 11 in the axial direction of the screw body 63. In the example shown in Figure 9, the bolt head 62 of the threaded portion 61 is located on the diagonal member-side end plate 71 side, so the fixing position of the fitting-side end plate 11 can be adjusted by changing the position of the nuts 65, 65 in the axial direction of the screw body 63. If the bolt head 62 is located on the fitting-side end plate 11 side, the position of the diagonal member-side end plate 71 in the axial direction of the screw body 63 should be adjusted. The adjustment mechanism 5 adjusts and defines the distance between the diagonal member-side end plate 71 and the fitting-side end plate 11 along the extending direction of the diagonal member 7 in the manner described above.

[0054] The diagonal member 7, connected to the connecting fitting 1 (fitting-side end plate 11) via the adjustment mechanism 5, is effectively extended by the distance between the diagonal member-side end plate 71 and the fitting-side end plate 11. This makes it possible to appropriately adjust the effective length of the diagonal member 7 in the wall structure 100 (see Figure 1) to suit the frame K.

[0055] The adjustment mechanism 5 allows the effective length of the diagonal members 7 to be appropriately adjusted to suit the frame K. As a result, the wall structure 100 can adjust the tension applied to the diagonal members 7 in a stationary state to resist in a balanced manner against the tensile force along the direction of extension of the diagonal members 7 and the compressive force along the direction of extension of the diagonal members 7 that are applied to the diagonal members 7 when the wall structure 100 deforms due to in-plane shear force (Figure 1).

[0056] Furthermore, the adjustment mechanism 5 allows the effective length of the diagonal members 7 to be adjusted as appropriate to suit the frame K. For example, standardized diagonal members 7 can be prepared, and their effective length can be adjusted at the construction site using the adjustment mechanism 5 to suit the frame K, thereby reducing costs.

[0057] In the adjustment mechanism 5, the threaded portion 61 (thread body 63) is aligned with the direction of extension of the diagonal member 7. As a result, the structural part to which the connecting fitting 1, the adjustment mechanism 5, and the diagonal member 7 are connected becomes highly strong, capable of firmly resisting both tensile forces and compressive forces along the direction of extension of the diagonal member 7.

[0058] In the adjustment mechanism 5, it is preferable to connect the diagonal member-side end plate 71 and the fitting-side end plate 11 using three or more threaded portions 61. Figures 9 and 10 illustrate the case where the diagonal member-side end plate 71 and the fitting-side end plate 11 are connected using four threaded portions 61. This improves the strength of the structural part to which the connecting fitting 1, adjustment mechanism 5, and diagonal member 7 are connected against compressive forces along the extending direction of the diagonal member 7. Furthermore, this makes the structural part to which the connecting fitting 1, adjustment mechanism 5, and diagonal member 7 are connected robust against out-of-plane forces in the rectangular shape formed by the frame K (see Figure 1).

[0059] The wall structure 100 may be equipped with an adjustment mechanism 5 that corresponds to some or all of the four fitting-side end plates 11 of the connecting fitting 1. Figures 1 and 9 illustrate a case in which the wall structure 100 has two adjustment mechanisms 5 corresponding to the two lower fitting-side end plates 11, 11 of the connecting fitting 1. That is, the two sets of diagonal member-side end plates 71 and fitting-side end plates 11 are connected in a state in which the distance between them is adjusted by the adjustment mechanism 5.

[0060] In the wall structure 100, when the diagonal member side end plate 71 and the metal fitting side end plate 11 are connected in a state of contact, they may be connected by a normal fastening method or a connection method such as welding. Figure 9 illustrates a case in which the diagonal member side end plate 71 and the metal fitting side end plate 11 are in a state of contact, and a bolt of a fastener 59 (for example, a bolt and nut) is inserted through the diagonal member side through hole 71H (see Figure 5) and the metal fitting side through hole 11H (see Figure 10, etc.), and the diagonal member side end plate 71 and the metal fitting side end plate 11 are connected by sandwiching them between the bolt head of the bolt and the nut screwed onto the bolt.

[0061] In the wall structure 100, the strength against compressive forces on the diagonal members 7 is increased as described above, and the length of the diagonal members 7 can be appropriately adjusted to suit the frame K.

[0062] [Another embodiment] (1) In the above embodiment, as shown in Figures 6 to 9, the connecting fitting 1 of the wall structure 100 (see Figure 1) has a connecting plate portion 10 and shear force absorbing portions 2, 2, and the connecting plate portion 10 is divided into a plate portion 10A located on one side in the width direction and a plate portion 10A located on the other side in the width direction, and a pair of shear force absorbing portions 2, 2 arranged vertically are placed between the one plate portion 10A and the other plate portion 10A. However, it is not essential that the connecting plate portion 10 is divided into one plate portion 10A and the other plate portion 10A, and it is not essential that the connecting fitting 1 has shear force absorbing portions 2. For example, as shown in Figure 11, the connecting plate portion 10 may be a single plate-shaped member. In this case, notches 15, 15 may be formed in the connecting plate portion 10, cut out from its upper end and lower end toward the center of the connecting plate portion 10.

[0063] The embodiments disclosed herein are illustrative examples, and the embodiments of the present invention are not limited thereto. They can be modified as appropriate without departing from the purpose of the present invention. [Industrial applicability]

[0064] This invention can be applied to wall structures. [Explanation of Symbols]

[0065] 1: Connecting hardware 10:Connection plate part 10A: Plate part 100: Wall structure 11: Metal fitting side end plate 11H: Through hole on the metal fitting side 15: Notch 19: Rib 2: Shear force absorption section 20: Flat plate part 29: Curved section 5: Adjustment mechanism 59: Fasteners 61: Threaded part 62: Bolt head 63: Screw body 65: Nut 66: Nut 7: Diagonal 70: Main unit 71: End plate on the diagonal side 71H: Diagonal side through hole 79:Connection part 8: Vertical frame 9: Horizontal frame C: Corner K: Frame

Claims

1. A rectangular frame structure consisting of a pair of vertical frames and a pair of horizontal frames, Four diagonal members, one end of which is connected to each of the corners of the frame, A connecting fitting is provided, which is positioned in the central part of the rectangle of the frame and to which the other end of the diagonal member is connected. The system includes an adjustment mechanism for adjusting the length of the connection portion between the connecting fitting and the diagonal member in a direction along the extending direction of the diagonal member, The aforementioned diagonal member is, Its extension direction is aligned with the extension direction of the diagonal of the frame, The other end has a diagonal member side end plate that is connected to the connecting fitting, The aforementioned connecting fitting has a fitting-side end plate to which the diagonal member-side end plate is connected, The adjustment mechanism is, The aforementioned diagonal member side end plate, The aforementioned end plate on the metal fitting side, Includes a screw portion that adjusts the distance separating the diagonal member end plate and the fitting end plate, and connects the diagonal member end plate and the fitting end plate, The threaded portion is arranged along the extending direction of the diagonal member, The wall structure is such that the diagonal member side end plate and the metal fitting side end plate are connected by three or more threaded portions.

2. The wall structure according to claim 1, wherein the diagonal member side end plate and the fitting side end plate are plate-shaped members perpendicular to the extending direction of the diagonal member.

3. The diagonal member side end plate has a diagonal member side through hole along the extending direction of the diagonal member, The end plate on the metal fitting side has a metal fitting side through hole along the extending direction of the diagonal member, The threaded portion is inserted through the through hole on the diagonal member side and the through hole on the fitting side. The wall structure according to claim 2, wherein the threaded portion and the diagonal member side end plate, and the threaded portion and the metal fitting side end plate are each fixed in position with a nut.

4. The wall structure according to claim 3, wherein the diagonal member is formed of a steel pipe.

5. The wall structure according to any one of claims 1 to 4, wherein the connecting fitting has a shear force absorbing portion that absorbs shear force along the extending direction of the vertical frame.

6. The shear force absorbing section has a U-shape when the frame is viewed from the front, and the U-shape is arranged along the vertical direction. One of the U-shaped flat plates in the shear force absorbing section is connected to one of the diagonal members in the width direction of the frame. The wall structure according to claim 5, wherein the other U-shaped flat plate portion in the shear force absorbing portion is connected to the other diagonal member in the width direction of the frame.

Images