Damper device and method for manufacturing the same
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- MINGGO DESIGN CO LTD
- Filing Date
- 2022-08-23
- Publication Date
- 2026-08-03
Smart Images
Figure 0007898716000001 
Figure 0007898716000002 
Figure 0007898716000003
Abstract
Description
Technical Field
[0001] The present invention relates to a damper device and a method for manufacturing the same, and more particularly to a damper device and a method for manufacturing the same that can reduce the strain of a structure required to plastically deform a brace member.
Background Art
[0002] There are structures provided with damper devices in order to absorb the energy acting on the structure due to earthquakes or winds (Patent Document 1). According to the damper device disclosed in Patent Document 1, it includes a brace member whose both ends are connected to two points of the structure, and a restraint member surrounding the periphery of the brace member, and can absorb the energy acting on the structure by plastically deforming the brace member in the direction connecting the two points of the structure.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, the above-described conventional damper device has a problem that the strain of the structure required to plastically deform the brace member becomes large.
[0005] That is, in the damper device of Patent Document 1, a yield portion having a smaller cross-sectional area than other portions is formed in a part of the brace member whose both ends are connected to two points of the structure, and when energy acts on the structure, the energy acting on the structure can be absorbed by plastically deforming the yield portion.
[0006] However, in damper devices like the one described in Patent Document 1, where each end of the brace material is connected to two points on the structure, the other parts of the brace material are also formed from the same material as the yield portion, making them susceptible to elastic deformation. As a result, the amount of elastic deformation required for the yield portion to enter the plastic deformation range tends to be large, leading to the problem that the strain of the structure required to plastically deform the brace material and absorb the energy of the structure becomes large. [Means for solving the problem]
[0007] To achieve this objective, the damper device of the present invention is disposed between two points of a structure and comprises a brace member that extends in the axial direction connecting the two points of the structure, with one end of the extended portion connected to one of the two points of the structure, a restraining member formed in a hollow shape surrounding the brace member, and a restraining member with one end connected to the other of the two points of the structure, with the other end connected to the restraining member. between A connecting member that is connected indirectly, An intermediate member disposed between the restraining member and the connecting member in the axial direction, The brace material is formed from a material with a lower yield point than the connecting member, and the other end is the other end of the connecting member. between Indirectly connected The restraining member and the connecting member are formed in a hollow shape, and the other end of the restraining member and the other end of the connecting member are connected via an intermediate member. ru. The damper device of the present invention is disposed between two points of a structure and comprises a brace member that extends in the axial direction connecting the two points of the structure, with one end of the extended brace member connected to one of the two points of the structure; a restraining member formed in a hollow shape that surrounds the brace member; and a connecting member with one end connected to the other of the two points of the structure, with the other end directly connected to the other end of the restraining member. The restraining member and the connecting member are formed in a hollow shape, and the brace member has an insertion portion on its other end that is inserted into the inside of the connecting member, is made of a material with a lower yield point than the connecting member, and the insertion portion is connected to the inner surface of the connecting member. The damper device of the present invention is disposed between two points of a structure and comprises a brace member that extends in the axial direction connecting the two points of the structure and has one extended end connected to one of the two points of the structure, a restraining member formed in a hollow shape that surrounds the brace member, and a connecting member whose one end is connected to the other of the two points of the structure and whose other end is directly or indirectly connected to the restraining member, wherein the restraining member has an inner surface shape that is square or rectangular, the brace member is made of a material with a lower yield point than the connecting member and whose other end is directly or indirectly connected to the other end of the connecting member, the brace member has an outer shape that is cross-shaped when viewed in the axial direction, each of its four ends when viewed in the axial direction is positioned opposite to the inner corner of the restraining member, and regulating members are provided on both sides of the four end sides of the brace member when viewed in the axial direction. The present invention provides a method for manufacturing a damper device comprising: a brace member extending in the axial direction connecting two points of a structure, with one extended end connected to one of the two points of the structure; a restraining member formed in a hollow shape surrounding the brace member; and a connecting member with one end connected to the other of the two points of the structure, with the other end directly connected to the other end of the restraining member, wherein the restraining member and the connecting member are formed in a hollow shape, the brace member having an insertion portion on its other end that is inserted into the inside of the connecting member, being formed from a material with a lower yield point than the connecting member, and the insertion portion being connected to the inner surface of the connecting member, comprising: a first step of inserting the insertion portion of the brace member into the inside of the connecting member and connecting the insertion portion and the connecting member; and a second step of displacing the restraining member into which one end of the brace member is inserted toward the other end of the brace member, and then connecting the restraining member and the connecting member. [Effects of the Invention]
[0008] Claim 1 , either 4 or 8The damper device described comprises a brace member extending axially between two points on a structure, with one end of the extended brace member connected to one of the two points on the structure; a hollow restraining member surrounding the brace member; and a connecting member with one end connected to the other of the two points on the structure, and the other end directly or indirectly connected to the restraining member. The brace member is made of a material with a lower yield point than the connecting member, and its other end is directly or indirectly connected to the other end of the connecting member. Therefore, it is not necessary to connect both ends of the brace member, which plastically deforms to absorb energy, to each of the two points on the structure. As a result, the axial dimensions of the brace member can be made smaller than the distance between the two points on the structure. Consequently, the amount of elastic deformation required for the brace member to undergo plastic deformation can be reduced.
[0009] Furthermore, by forming the bracing material from a material with a lower yield point than the connecting members, it is possible to suppress the elastic deformation of members other than the bracing material. As a result, the amount of structural strain required to cause plastic deformation of the bracing material can be reduced.
[0010]
[0011]
[0012]
[0013] Claim 1. Description According to the damper device ,shaft An intermediate member is provided between the restraining member and the connecting member in the direction, and the restraining member and the connecting member are formed in a hollow shape, and the other end of the restraining member and the other end of the connecting member are connected via the intermediate member, making it easier to connect the restraining member and the connecting member.
[0014] In other words, if the restraining member and the connecting member are hollow, and their external shapes are different, it becomes impossible to butt the other end of the restraining member with the other end of the connecting member, making connection difficult. However, by connecting the other end of the restraining member with the other end of the connecting member via an intermediate member, it becomes easier to connect the restraining member and the connecting member.
[0015] Claim 2 According to the damper device described, 1 In addition to the effects of the damper device described above, the restraining member and the connecting member are formed to have substantially the same external shape and size in an axial view, the external shape of the other end of the brace member in an axial view is formed to be substantially the same as the internal shape of the restraining member, and the other ends of the brace member and the restraining member are connected to the intermediate member with the entire circumference of the restraining member and the entire circumference of the brace member connected. As a result, when force is transmitted from the connecting member to the brace member, it is possible to suppress the concentration of force on a part of the circumferential direction of the brace member. Consequently, when force is applied to the damper device, it is possible to suppress local buckling of the connecting member or the brace member.
[0016] Claim 3 According to the damper device described, 1 In addition to the effects of the damper device described above, the restraining member and the connecting member are formed to have substantially the same external shape and size in an axial view, the external shape of the brace member in an axial view is formed to be different from the internal shape of the restraining member, multiple plate members are connected to the other end of the brace member and are arranged parallel to the internal surface of the restraining member, and the other end of the brace member and restraining member are connected to the intermediate member with the entire circumference of the restraining member, a part of the brace member, and multiple plate members connected. Therefore, even if the external shape of the brace member differs from the internal shape of the restraining member, it is possible to suppress the concentration of force on a part of the circumferential direction of the brace member when force is transmitted from the connecting member to the brace member. As a result, when force is applied to the damper device, local buckling of the connecting member or the brace member can be suppressed.
[0017] Claim 4 According to the damper device described , restraint The bundle material and the connecting member are formed in a hollow shape, and the other end of the restraining material and the other end of the connecting member are connected. The brace material has an insertion portion on its other end that is inserted into the inside of the connecting member, and this insertion portion is connected to the inner surface of the connecting member. Therefore, the brace material can be positioned inside the connection between the restraining material and the connecting member. As a result, when force is applied to the damper device, buckling of the connection between the restraining material and the connecting member in a direction perpendicular to the axial direction can be suppressed.
[0018] In addition, an intermediate member for connecting the restraining member and the connecting member can be made unnecessary between the restraining member and the connecting member, so that the manufacturing cost of the damper device can be reduced.
[0019] Claim 5 According to the damper device described in claim 4 In addition to the effects exhibited by the damper device described in claim
[0020] That is, by forming the outer shape in a cross shape in the axial direction view, the connecting member and the brace member can be welded by both side surfaces of four end portions on both sides in the axial direction view and the inner surface of the connecting member. As a result, the connection amount between the insertion portion of the brace member and the inner surface of the connecting member can be ensured.
[0021] In addition, the space of the brace member formed in a cross shape in the axial direction view secures a working space necessary for welding the connecting member and the insertion portion. As a result, the insertion portion can be easily welded to the inner surface side of the connecting member.
[0022] Claim 6 According to the damper device described in claim 4 In addition to the effects exhibited by the damper device described in claim
[0023] In addition, claim 6According to the damper device described, the outer shape of the brace material in an axial view is formed to a size that allows it to be welded to the inner surface of the connecting member, making it easier to reduce the gap between the brace material and the restraining member in an axial view. As a result, when a force is applied to the damper device, deformation of the brace material in a direction perpendicular to the axial direction can be easily suppressed.
[0024] Claim 7 The method for manufacturing the damper device described is as described in the claim. 4 from 6 A method for manufacturing a damper device as described in any of the above, comprising: a first step of inserting the insertion portion of a brace material into the inside of a connecting member and connecting the insertion portion and the connecting member; and a second step of displacing the restraining member into which one end of the brace material is inserted toward the other end of the brace material, and then connecting the restraining member and the connecting member. Therefore, even in a structure in which a restraining member is arranged around the brace material, it is possible to easily connect the insertion portion of the brace material inserted into the inside of the connecting member and the connecting member.
[0025] Claim 8 According to the damper device described , restraint The bundle members have an inner shape that is either square or rectangular, and the bracing members have an outer shape that is cross-shaped when viewed in the axial direction. Each of the four ends of the bracing member is positioned opposite the inner corner of the restraining member when viewed in the axial direction. As a result, the cross-sectional area of the bracing member can be secured in the direction perpendicular to the axial direction without increasing the thickness of the bracing member. Consequently, the cost of the bracing member can be reduced.
[0026] Furthermore, since each of the four ends in the axial view is positioned opposite the inner corner of the restraint material, it is easier to bring the brace material into contact with the inner surface of the restraint material when the brace material attempts to deform in a direction perpendicular to the axial direction. As a result, it is easier to suppress the deformation of the brace material in a direction perpendicular to the axial direction when force is applied to the damper device.
[0027] Claim 8 According to the damper device described ,shaftSince regulating members are provided on both sides of the four end faces of the brace material in a directional view, the deformation of the brace material in a direction perpendicular to the axial direction when force is applied to the damper device can be suppressed by the regulating members.
[0028] Furthermore, the restricting members are positioned on the four end sides of the brace material, which has a cross-shaped outer shape when viewed in the axial direction, and each of the four end sides is positioned opposite the inner corner of the restraint material. As a result, the restricting members can be brought closer to the inner surface of the restraint material without increasing the outer shape of the restricting members. Consequently, the manufacturing cost of the damper device can be kept from increasing. According to the damper device described in claim 9 or 11, in addition to the effects of the damper device described in any one of claims 1, 4, or 8, the brace material is formed to have a smaller outer shape than the inner shape of the restraint material in an axial view, making it easier to insert the brace material inside the restraint material when arranging the brace material. As a result, it is easier to arrange the brace material on the restraint material. According to the damper device of claim 10, in addition to the effects of the damper device of claim 9, a predetermined gap is formed between the brace material and the inner surface of the restraint material in an axial view. Therefore, when the brace material deforms in a direction perpendicular to the axial direction when a force is applied to the damper device, the brace material can be brought into contact with the restraint material, and the amount of deformation of the brace material can be limited to the amount of the gap between the brace material and the inner surface of the restraint material. As a result, buckling of the brace material in a direction perpendicular to the axial direction can be suppressed when a force is applied to the damper device. According to the damper device of claim 11, in addition to the effects of the damper device of claim 1 or 4, a reinforcing member is provided on the side surface of the brace material in an axial view, and the outer shape of the brace material in an axial view is formed in a cross shape or an H shape, thereby increasing the buckling rigidity of the brace material while improving the design freedom of the brace material. [Brief explanation of the drawing]
[0029] [Figure 1] This is a side view showing how the damper device in the first embodiment is incorporated into the structure. [Figure 2] (a) is a side view of the damper device, (b) is a cross-sectional view of the damper device along the line IIb-IIb in Figure 2(a), and (c) is a cross-sectional view of the damper device along the line IIc-IIc in Figure 2(a). [Figure 3] (a) is a cross-sectional view of the damper device along the line IIIa-IIIa in Figure 2(a), and (b) is a cross-sectional view of the damper device along the line IIIb-IIIb in Figure 3(a). [Figure 4] (a) is a side view of the damper device in the second embodiment, (b) is a cross-sectional view of the damper device along the line IVb-IVb in Figure 4(a), and (c) is a cross-sectional view of the damper device along the line IVc-IVc in Figure 4(a). [Figure 5] (a) is a cross-sectional view of the damper device along the line Va-Va in Figure 4(a), and (b) is a cross-sectional view of the damper device along the line Vb-Vb in Figure 5(a). [Figure 6](a) is a side view of the damper device in the third embodiment, (b) is a cross-sectional view of the damper device along the line VIb-VIb in Figure 6(a), and (c) is a cross-sectional view of the damper device along the line VIc-VIc in Figure 6(a). [Figure 7] (a) is a cross-sectional view of the damper device along the line VIIa-VIIa in Figure 6(a), and (b) is a cross-sectional view of the damper device along the line VIIb-VIIb in Figure 7(a). [Modes for carrying out the invention]
[0030] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, with reference to Figure 1, the manner in which the damper device 10 is incorporated into the structure 1 in the first embodiment of the present invention will be described. Figure 1 is a side view showing the manner in which the damper device 10 is incorporated into the structure 1 in the first embodiment.
[0031] As shown in Figure 1, in a structure 1 (a building composed of columns 2 and beams 3) made up of columns 2 and beams 3, a pair of gusset plates 4 are provided at the corners of opposing positions in the rectangular space enclosed by the pair of columns 2 and the pair of beams 3. The damper device 10 is incorporated between these pair of gusset plates 4 (between two points on the structure 1).
[0032] When columns 2 and beams 3 are displaced due to earthquakes or other events, the force generated by this displacement is applied to the damper device 10 in the axial direction (left-right direction in Figure 2 (arrows LR direction)) (force is applied to the damper device 10). This prevents columns 2 and beams 3 from being displaced beyond their allowable limits. Therefore, the collapse of structure 1 can be prevented.
[0033] The damper device 10 is fastened to each of the pair of gusset plates 4 via splice plates by bolts (not shown) at one end of the connecting member 40 (described later) and one end of the brace member 20.
[0034] Next, the damper device 10 in the first embodiment will be described with reference to Figures 2 and 3. Figure 2(a) is a side view of the damper device 10, Figure 2(b) is a cross-sectional view of the damper device 10 along the line IIb-IIb in Figure 2(a), and Figure 2(c) is a cross-sectional view of the damper device 10 along the line IIc-IIc in Figure 2(a). Figure 3(a) is a cross-sectional view of the damper device 10 along the line IIIa-IIIa in Figure 2(a), and Figure 3(b) is a cross-sectional view of the damper device 10 along the line IIIb-IIIb in Figure 3(a).
[0035] In the cross-sectional views of the damper device 10 in Figures 2(b), 3(a), and 3(b), the weld connecting the brace material 20 and plate material 21, which will be described later, is indicated by the reference numeral Y1. Also, in the cross-sectional views of the damper device 10 in Figures 3(a) and 3(b), the weld connecting the connecting member 40 and intermediate material 50, which will be described later, is indicated by the reference numeral Y2, and the weld connecting the restraining member 30 and intermediate material 50, which will be described later, is indicated by the reference numeral Y3. On the other hand, in the cross-sectional view of the damper device 10 in Figure 2(c), weld Y1 is omitted. Furthermore, although welds Y1 to Y3 shown in Figures 2(b), 3(a), and 3(b) are welded with backing plates, the backing plates for welds Y1 to Y3 are omitted in the illustration.
[0036] Furthermore, in the following explanation, with respect to the damper device 10 in the state shown in Figure 2(a), the far side of the paper will be referred to as the rear side (arrow B direction), the near side of the paper as the front side (arrow F direction), the top side of the paper as the upward side (arrow U direction), the bottom side of the paper as the downward side (arrow D direction), the right side of the paper as the rightward side (arrow R direction), and the left side of the paper as the leftward side (arrow L direction). Note that, with respect to structure 1 (see Figure 1), the damper device 10 is positioned perpendicular to the vertical direction (arrow UD direction) with respect to the rectangular plane enclosed by a pair of columns 2 and a pair of beams 3.
[0037] As shown in Figures 2 and 3, the damper device 10 mainly comprises a brace member 20 that extends in the left-right direction (arrows L and R direction) and whose extended end (arrow R direction side) is connected to one of two points (a pair of gusset plates 4 (see Figure 1)) of the structure 1 (see Figure 1); a restraining member 30 formed in a hollow shape that surrounds the brace member 20; a connecting member 40 whose one end (arrow L direction side) is connected to the other of the two points of the structure 1; and an intermediate member 50 disposed between the restraining member 30 and the connecting member 40 in the left-right direction, to which the other end of the restraining member 30 (arrow L direction side) and the other end of the connecting member 40 (arrow R direction side) are connected.
[0038] The brace material 20 is formed by welding together or bending iron plates having a predetermined thickness to create a predetermined cross-sectional shape, and extends in the left-right direction (arrows LR direction). In the first embodiment, the brace material 20 is formed by combining three iron plates to create an H-shaped cross-section (outer shape when viewed in the left-right direction). However, the cross-sectional shape of the brace material 20 is not limited to an H-shape; it may also be formed in a square or cross shape.
[0039] Furthermore, the brace material 20 is formed from a material with a lower yield point than the connecting member 40 described later (for example, LY material, SN material), and is designed to be plastically deformable before the connecting member 40 when earthquake or wind energy acts on the structure 1 (see Figure 1) and an axial force (left-right direction (arrow LR direction)) is applied to the damper device 10. This plastic deformation of the brace material 20 absorbs the energy acting on the structure 1, thereby suppressing the shaking of the structure 1.
[0040] A plate material 21 is provided on the other end (direction L of the arrow) of the brace material 20, and reinforcing members 22 are provided at predetermined intervals in the left-right direction (direction L of the arrows) on one end (direction R of the arrow) of the plate material 21.
[0041] The plate material 21 is an iron plate used to form a frame shape on the other end (direction L of the arrow) of the brace material 20, and is made from the same material as the brace material. In the first embodiment of the brace material 20, which has an H-shaped outer shape when viewed from left to right, the plate material 21 is positioned to close the open portions on both sides of the brace material 20 in the front-to-back direction (direction FB of the arrow), and the plate material 21 is connected to the brace material 20 by welding Y1. As a result, a frame shape is formed on the other end of the brace material 20 by the brace material 20 and the two plate materials 21. The frame shape formed on the other end (direction L of the arrow) of the brace material 20 by the brace material 20 and the plate material 21 is positioned along the inner surfaces of the restraining member 30 and the connecting member 40, which will be described later.
[0042] Furthermore, the thickness of the plate material 21 in the front-to-back direction (arrow FB direction) is set to be approximately the same as the thickness of the brace material 20. This prevents the force from being transmitted unevenly to either the brace material 20 or the plate material 21 when force is transmitted from the connecting member 40 to the brace material 20 and the plate material 21.
[0043] The reinforcing members 22 are steel plates that suppress deformation (buckling) of the brace material 20 in a direction perpendicular to the left-right direction (arrows LR direction), and are arranged to connect the pair of flanges of the brace material 20, which is formed into an H-shape when viewed from left to right. Furthermore, a pair of reinforcing members 22 are arranged on either side of the web of the brace material 20, which is formed into an H-shape when viewed from left to right, and a set of these pairs is arranged at predetermined intervals in the left-right direction.
[0044] The restraining member 30 is a member that restricts deformation (buckling) of the brace member 20 beyond a predetermined amount in the front-to-back direction (arrow FB direction) and the up-and-down direction (UD direction), while allowing deformation (expansion and contraction) of the brace member in the left-to-right direction (arrow LR direction). It is formed in a hollow shape with a space large enough to insert the brace member 20. In the first embodiment, the restraining member 30 is formed from a square-shaped rectangular steel pipe formed by processing a single sheet of steel plate. The restraining member 30 only needs to be able to insert the brace member 20 inside, and may be formed by combining four sheets of steel plate to form a mouth-shaped cross section, or it may be formed from a round steel pipe.
[0045] Furthermore, in the front-to-back direction (arrow FB direction), a portion of the brace material 20, which is formed in an H-shaped cross-section, is brought close to the inner surface of the restraint material 30 to a position separated by the first gap H1 (see Figure 2(c)), and in the up-and-down direction (arrow UD direction), a portion of the brace material 20, which is formed in an H-shaped cross-section, is brought close to the inner surface of the restraint material 30 to a position separated by the second gap H2 (see Figure 2(c)). Therefore, when the brace material 20 attempts to deform in the front-to-back or up-and-down direction, the side surface of the brace material 20 is brought into contact with the inner surface of the restraint material 30, thereby limiting the deformation of the brace material 20 in the front-to-back or up-and-down direction to the distance of the first gap H1 or the distance of the second gap H2. As a result, buckling of the brace material 20 in the front-to-back or up-and-down direction can be suppressed when force is applied to the damper device 10.
[0046] In other words, the distance between the first gap H1 and the second gap H2 is set to a range within which the brace member 20 will not buckle when the brace member 20 deforms in the front-to-back direction (arrow FB direction) or the up-and-down direction (arrow UD direction), and is appropriately changed depending on the rigidity of the brace member 20 and the inner surface shape of the restraint member 30.
[0047] Furthermore, when the side surface of the brace member 20 is brought into contact with the inner surface of the restraint member 30, it is not necessary for the entire surface of the brace member 20 to be in contact with the inner surface of the restraint member 30 in the front-to-back direction (arrow FB direction) and the up-to-down direction (arrows U-D direction). In other words, it is sufficient that at least a portion of the outer shape of the brace member 20 is maintained within the first gap H1 and the second gap H2. Therefore, the degree of freedom in the outer shape of the brace member 20 can be improved. As a result, the strength design of the brace member 20 can be simplified.
[0048] The connecting member 40 is a member for connecting a brace member 20, which is connected to one of two points (a pair of gusset plates 4 (see Figure 1)) of the structure 1 (see Figure 1), to the other of the two points of the structure 1. It is formed to have substantially the same external shape and size as the restraining member 30 when viewed in the left-right direction (view in the direction of arrows LR), and extends in the left-right direction.
[0049] In the damper device 10 of the first embodiment, the restraining member 30 and the connecting member 40 are formed to have the same shape and size when viewed in the left-right direction (view in the direction of arrows LR), and are made from the same material (for example, general steel materials such as SS, SN, SM, and SUS). That is, the restraining member 30 and the connecting member 40 are made from the same steel material (square steel pipe in the first embodiment). This reduces the manufacturing cost of the damper device 10.
[0050] The intermediate material 50 is a steel plate used to connect the restraining material 30 and the connecting member 40. It is formed to a predetermined thickness and arranged with its thickness direction oriented in the left-right direction (arrows LR direction). Furthermore, the outer shape of the intermediate material 50, when viewed in the left-right direction, is larger than the outer shape of the restraining material 30 and the connecting member 40. This ensures a welding area between the restraining material 30 and the connecting member 40 and the intermediate material 50.
[0051] Furthermore, by connecting the restraining member 30 and the connecting member 40 to the intermediate member 50, the strength of the other end of the restraining member 30 and the other end of the connecting member 40 can be improved. Therefore, even if the restraining member 30 and the connecting member 40 are formed in a hollow shape, the strength of the connecting portion of the restraining member 30 and the connecting member 40 can be increased. As a result, even if the restraining member 30 and the connecting member 40 are formed in a hollow shape, buckling of the connecting portion of the restraining member 30 and the connecting member 40 can be suppressed.
[0052] Furthermore, by connecting the restraining member 30 and the connecting member 40 to the intermediate material 50, the connection of the restraining member 30 and the connecting member 40 can be simplified. That is, in the case where the restraining member 30 and the connecting member 40 are directly connected, it is necessary to connect the restraining member 30 and the connecting member 40 by butting them together, so if the restraining member 30 and the connecting member 40 are of different sizes, it becomes difficult to connect them. In the first embodiment, since it is only necessary to connect the restraining member 30 and the connecting member 40 to the intermediate material 50, it is possible to easily connect the restraining member 30 and the connecting member 40 regardless of their sizes.
[0053] Furthermore, a groove is formed on the other end side (in the direction of arrow R) of the connecting member 40. When connecting the connecting member 40 and the intermediate material 50, welding Y2 is performed to fill the groove formed on the other end side of the connecting member 40, thereby connecting the connecting member 40 and the intermediate material 50.
[0054] Furthermore, the restraining member 30 has a groove formed on the other end (in the direction of arrow L) for connection with the intermediate member 50, and the brace member 20 and plate member 21 have grooves formed on the end facing the intermediate member 50 (in the direction of arrow L). When connecting the restraining member 30 and the intermediate member 50, welding Y3 is performed to fill the groove formed on the brace member 20 and plate member 21, along with the groove formed on the other end of the restraining member 30. This not only connects the restraining member 30 and the intermediate member 50, but also connects the restraining member 30 to the brace member 20 and plate member 21, and connects the brace member 20 and plate member 21 to the intermediate member 50. As a result, the manufacturing process of the damper device 10 can be simplified.
[0055] Next, the manufacturing process of the damper device 10 in the first embodiment will be described. In the first step, the plate material 21 is welded to the other end (in the direction of arrow L) of the brace material 20. In this case, the dimensions of the plate material 21 in the left-right direction (in the direction of arrows LR) are set to be approximately the same as the dimensions in the up-down direction (in the direction of arrows UD). This eliminates the need to align the placement direction when arranging the plate material 21 on the brace material 20. As a result, the ease of arranging the plate material 21 on the brace material 20 can be improved.
[0056] Furthermore, it is preferable that the grooves for welding the brace material 20 and plate material 21 to the intermediate material 50 are formed after the first step. If the grooves are formed on the plate material 21 before the first step, it becomes necessary to align the placement direction when placing the brace material 20 on the plate material 21, which reduces the efficiency of the placement work.
[0057] In the second step, after inserting the brace material 20 and plate material 21 inside the restraint material 30, an intermediate material 50 is placed on the other end side of the restraint material 30, and the brace material 20, plate material 21 and restraint material 30 are connected to the intermediate material 50 by welding Y3, while connecting the frame formed by the brace material 20 and plate material 21 to the entire circumference of the restraint material 30.
[0058] In this case, the outer shapes of the brace material 20 and plate material 21 in the left-right direction (view in the direction of arrows LR) are formed to be smaller than the inner shape of the restraint material 30, making it easier to insert the brace material 20 and plate material 21 inside the restraint material 30. As a result, it is easier to arrange the brace material 20 and plate material 21 on the restraint material 30.
[0059] Finally, in the third step, the entire circumference of the connecting member 40 is welded by welding Y2 to connect the connecting member 40 and the intermediate member 50. Through these first to third steps, the damper device 10 is manufactured.
[0060] The welding Y3 (second step) between the restraint member 30 and the intermediate member 50 may be performed later than the welding Y2 (third step) between the connecting member 40 and the intermediate member 50, but it is preferable to perform the welding Y3 between the restraint member 30 and the intermediate member 50 first. This is because, by welding Y3 between the restraint member 30 and the intermediate member 50, a structure is first formed by connecting the brace member 20 and the plate member 21 with the restraint member 30 and the intermediate member 50. Later, the connecting member 40, whose dimensions in the left-right direction (arrow LR direction) are adjusted according to the dimensions between two points of the structure 1 (between opposing pairs of gusset plates 4 (see Figure 1)), is connected to the intermediate member 50 by welding Y2, thereby easily changing the left-right dimensions of the damper device 10 having a predetermined amount of energy absorption.
[0061] With the damper device 10 formed as described above, the other end of the brace member 20 (in the direction of arrow L) can be connected to the other of the two points on the structure 1 (see Figure 1) via the connecting member 40, so it is not necessary to connect both ends of the brace member 20 to each of the two points on the structure 1. Therefore, the dimensions of the brace member 20 in the left-right direction (in the direction of arrows LR) can be made shorter than the distance between the two points on the structure 1. Thus, the amount of elastic deformation required for the brace member 20 to undergo plastic deformation can be reduced, and the rigidity of the brace member 20 can be increased.
[0062] To explain in more detail, for example, if the total length of the brace member 20 in the left-right direction is 'A', and the amount of elastic deformation required to cause plastic deformation of the brace member 20 is 'a', then by making the total length of the brace member 20 in the left-right direction 'half of A', the amount of elastic deformation required to cause plastic deformation of the brace member 20 can be reduced to 'half of a'. Therefore, in a damper device 10 in which the total length of the brace member 20 can be shorter than the distance between two points on the structure 1 (between opposing pairs of gusset plates 4 (see Figure 1)), the amount of elastic deformation of the brace member 20 required to cause plastic deformation can be reduced compared to a damper device in which both ends of the brace member are connected to each of the two points on the structure 1.
[0063] Furthermore, in order to reduce the amount of elastic deformation required for the brace material to undergo plastic deformation, it is conceivable to keep the total length of the brace material as 'A' while reducing the cross-sectional area of a portion of the brace material (making a portion of the brace material thinner). However, even in this case, since the portion of the brace material other than the portion of the brace material is formed from the same material as the portion of the brace material, the portion of the brace material other than the portion of the brace material also becomes more susceptible to elastic deformation. Therefore, the amount of elastic deformation required for a portion of the brace material to enter the plastic deformation range tends to increase, and the amount of structural strain required to cause plastic deformation of the brace material tends to increase.
[0064] In contrast, the brace member 20 in the first embodiment is positioned at one end between two points (a pair of gusset plates 4) of the structure (see Figure 1), and the other end is made of a material with a lower yield point than the connecting member 40 which is connected to the other end of the brace member 20 via an intermediate member 50. Therefore, it is possible to suppress the elastic deformation of the connecting member 40. As a result, the amount of strain on the structure 1 required to cause plastic deformation of the brace member 20 can be reduced.
[0065] Furthermore, as mentioned above, if the total length of the brace material is kept at 'A', but the cross-sectional area of a portion of the brace material is reduced, the rigidity of the brace material will decrease accordingly. Also, if the cross-sectional area of the brace material is increased in areas other than the portion to ensure sufficient rigidity, and the cross-sectional area of a portion of the brace material is reduced compared to the rest, the damper device itself will become larger. Therefore, reducing the cross-sectional area of a portion of the brace material makes it difficult to design the strength of the brace material (damper device).
[0066] In contrast, the damper device 10 makes the overall length of the brace member 20 in the left-right direction shorter than 'A', thereby reducing the amount of elastic deformation of the brace member 20, and thus maintaining the cross-sectional area of the cross-section of the brace member 20. Therefore, the rigidity of the brace member 20 can be ensured. As a result, the strength design of the brace member 20 (damper device 10) can be simplified.
[0067] Furthermore, in the damper device 10 of the first embodiment, the restraining member 30 and the connecting member 40 are formed to have substantially the same external shape and size in an axial view, and the other end of the brace member 20 and the restraining member 30 (in the direction of arrow L) is welded to the intermediate member 50 with the frame shape formed by the brace member 20 and the plate member 21 and the entire circumference of the restraining member 30 connected by welding Y3. As a result, when force is transmitted from the connecting member 40 to the brace member 20, it is possible to suppress the concentration of force on a part of the circumferential direction of the brace member 20. Consequently, when force is applied to the damper device 10, it is possible to suppress local buckling of the connecting member 40 or the brace member 20.
[0068] Next, the damper device 210 in the second embodiment will be described with reference to Figures 4 and 5. In the first embodiment described above, the case in which the cross-section of the brace material 20 is formed in an H shape was described, but in the damper device 210 of the second embodiment, the case in which the cross-section of the brace material 220 is formed in a cross shape will be described. Note that the same reference numerals are used for parts that are the same as in the first embodiment, and their descriptions are omitted.
[0069] Figure 4(a) is a side view of the damper device 210 in the second embodiment, Figure 4(b) is a cross-sectional view of the damper device 210 along the line IVb-IVb in Figure 4(a), and Figure 4(c) is a cross-sectional view of the damper device 210 along the line IVc-IVc in Figure 4(a). Figure 5(a) is a cross-sectional view of the damper device 210 along the line Va-Va in Figure 4(a), and Figure 5(b) is a cross-sectional view of the damper device 210 along the line Vb-Vb in Figure 5(a).
[0070] In the cross-sectional views of the damper device 210 in Figures 4(b), 5(a), and 5(b), similar to the damper device 10 in the first embodiment, the weld connecting the brace material 220 and plate material 221, which will be described later, is indicated by the reference numeral Y1. Also, in the cross-sectional views of the damper device 210 in Figures 5(a) and 5(b), the weld connecting the connecting member 40 and the intermediate material 50 is indicated by the reference numeral Y2, and the weld connecting the restraining material 30 and the intermediate material 50 is indicated by the reference numeral Y3. On the other hand, in the cross-sectional view of the damper device 210 in Figure 4(c), weld Y1 is omitted. Furthermore, although welds Y1 to Y3 shown in Figures 4(b), 5(a), and 5(b) are welded with backing plates, the backing plates for welds Y1 to Y3 are omitted in the illustration.
[0071] As shown in Figures 4 and 5, the damper device 210 in the second embodiment mainly comprises a brace member 220 that extends in the left-right direction (arrows LR direction) and whose extended end (arrow L direction side) is connected to one of two points (a pair of gusset plates 4 (see Figure 1)) of the structure 1 (see Figure 1), a restraining member 30, a connecting member 40, and an intermediate member 50.
[0072] The brace member 220 is formed in a cross shape by welding together three steel plates having a predetermined thickness and extends in the left-right direction (arrows LR direction). Furthermore, similar to the brace member 20 in the first embodiment, the brace member 220 is formed from a material with a lower yield point than the connecting member 40 (for example, LY material, SN material), and is designed to be plastically deformable before the connecting member 40 when seismic or wind energy acts on the structure 1 (see Figure 1) and an axial force (left-right direction (arrows LR direction)) is applied to the damper device 10.
[0073] Furthermore, when viewed from the left or right (viewed in the direction of arrows LR), the brace member 220 is positioned so that each of the four outer ends 220a (see Figures 4(b) and 4(c)) on the outer edge, which are formed in a cross shape, is facing the inner corner 30a (see Figures 4(b) and 4(c)) of the restraint member 30, which is formed from a square steel pipe.
[0074] In other words, the brace material 220 is positioned so that two directions extending in a cross shape when viewed from left to right (viewed in the direction of arrows L-R) are aligned with the diagonal direction of the restraint material 30. This maximizes the dimensions of the brace material 220 in the two directions extending in a cross shape when viewed from left to right (viewed in the direction of arrows L-R).
[0075] Therefore, even without increasing the thickness of each individual steel plate in the brace material 220 formed by combining three steel plates, the cross-sectional area of the brace material 220 (the cross-section cut by a plane perpendicular to the left-right direction) can be secured. As a result, the manufacturing cost of the brace material 220 can be reduced by making the thickness of each individual steel plate forming the brace material 220 thinner.
[0076] Furthermore, in a left-right view (view in the direction of arrows LR), each of the four outer ends 220a on the outer edge of the brace member 220, which are formed in a cross shape, is positioned to face the inner corner 30a of the restraint member 30, which is formed from a square steel pipe. This makes it easier to reduce the distance between the two sides of the brace member 220 on the outer end 220a side and the inner surface of the restraint member 30. Therefore, when the outer end 220a side of the brace member 220 deforms toward either side, it is easier to bring the side of the brace member 220 on the outer end 220a side into contact with the inner surface of the restraint member 30. As a result, when force is applied to the damper device 210, it is easier to suppress deformation of the brace member 220 in a direction perpendicular to the left-right direction.
[0077] Furthermore, at the other end (direction L of arrow) of the brace material 220 in the second embodiment, four plate materials 221 are arranged so as to connect the four outer end 220a sides that are formed in a cross shape when viewed from the left and right (direction LR of arrows), and these plate materials 221 are connected by welding Y1. As a result, a frame shape is formed on the other end of the brace material 220 by the four plate materials 221.
[0078] The frame-like structure formed on the other end (in the direction of arrow L) of the brace material 220 by the four plate materials 221 is arranged to conform to the inner surface shape of the restraint material 30 and the connecting member 40. In the second embodiment, since the structure is formed so that force is transmitted from the connecting member 40 to the plate materials 221, the thickness of the plate materials 221 can be made smaller than the thickness of the brace material 220. This reduces the manufacturing cost of the damper device 210.
[0079] In the damper device 210 of the second embodiment, the outer shape of the brace member 220 in the left-right view (view in the direction of arrows LR) is formed in a cross shape, and the connecting member 40 and the restraining member 30 are formed from square-shaped rectangular steel pipes. Therefore, in the left-right view, the shape of the damper device 210 in the front-rear direction (direction of arrow FB) and the shape of the damper device 210 in the up-down direction (direction of arrow UD) can be made the same. As a result, when installing the damper device 210 on the structure 1 (see Figure 1), it is not necessary to match the installation direction in the front-rear direction and the up-down direction. Consequently, the installation work of the damper device 210 on the structure 1 can be simplified.
[0080] Reinforcement members 222 are arranged at predetermined intervals in the left-right direction on the side surface of the brace member 220 when viewed from the left-right direction (view in the direction of arrows LR). The reinforcement members 222 are formed in a triangular shape when viewed from the left-right direction, with one vertex of the triangle positioned toward the center of the brace member 220, which has a cross-shaped outer shape when viewed from the left-right direction, and two sides extending from this vertex extend along the side surface of the brace member 220. The two sides of the reinforcement member 222 that extend along the side surface of the brace member 220 are welded to the brace member 220.
[0081] Furthermore, the reinforcing members 222 are positioned in the spaces formed in the vertical direction (arrow UD direction) and the front-to-back direction (arrow FB direction) of the brace member 220, which is formed in a cross shape when viewed from the left and right (arrow LR direction). This increases the buckling rigidity of the brace member 220 while improving the design flexibility of the brace member 220.
[0082] Furthermore, as described above, if the outer shape of the brace material 220 in the left-right direction view (arrow LR direction view) is made cross-shaped, there is a risk that the brace material 220 may be partially distorted by the heat generated when welding three steel plates together to form the brace material 220, but by providing the reinforcing member 222, the distortion of the brace material 220 due to the heat generated when forming the brace material 220 can be suppressed. As a result, the energy absorption amount designed for the damper device 210 can be secured.
[0083] Next, with reference to Figures 6 and 7, the damper device 310 in the third embodiment will be described. In the first embodiment described above, the case in which the restraining member 30 and the connecting member 40 are connected via an intermediate member 50 was described, but in the damper device 310 of the third embodiment, the case in which the restraining member 30 and the connecting member 40 are directly connected will be described. Note that the same reference numerals are used for parts that are the same as in each of the above embodiments, and their descriptions are omitted.
[0084] Figure 6(a) is a side view of the damper device 310 in the third embodiment, Figure 6(b) is a cross-sectional view of the damper device 310 along the line VIb-VIb in Figure 6(a), and Figure 6(c) is a cross-sectional view of the damper device 310 along the line VIc-VIc in Figure 6(a). Figure 7(a) is a cross-sectional view of the damper device 310 along the line VIIa-VIIa in Figure 6(a), and Figure 7(b) is a cross-sectional view of the damper device 310 along the line VIIb-VIIb in Figure 7(a).
[0085] In the cross-sectional views of the damper device 310 in Figures 6(b), 7(a), and 7(b), the weld connecting the brace material 320 and the connecting member 40, which will be described later, is indicated by the reference numeral Y4. Also, in the cross-sectional views of the damper device 310 in Figures 7(a) and 7(b), the weld connecting the connecting member 40 and the restraining member 30 is indicated by the reference numeral Y5. On the other hand, in the cross-sectional view of the damper device 310 in Figure 6(c), weld Y4 is omitted. Furthermore, although weld Y5 shown in Figures 7(a) and 7(b) is welded with a backing plate in place, the backing plate for weld Y5 is omitted from the illustration.
[0086] As shown in Figures 6 and 7, the damper device 310 in the third embodiment is mainly formed by comprising a brace member 320, a restraining member 30, and a connecting member 40, with the brace member 320 being connected to the connecting member 40, and the restraining member 30 and the connecting member 40 being connected.
[0087] The brace member 320, like the brace member 220 in the second embodiment, is formed in a cross shape by welding together three steel plates having a predetermined thickness and extends in the left-right direction (arrows L and R direction). In addition, the brace member 320 in the third embodiment is provided with an insertion portion 320b on the other end side (arrow L direction side) that can be inserted into the other end side (arrow R direction side) of the connecting member 40.
[0088] The insertion portion 320b is the part that connects to the inner surface of the connecting member 40, and is formed to protrude a predetermined length beyond the other end of the restraint member 30 (in the direction of arrow L) toward the connecting member 40 (in the direction of arrow L). The insertion portion 320b is formed to have the same outer shape and size as the brace member 320 that is inserted inside the restraint member 30 when viewed from the left and right (viewed in the direction of arrows LR).
[0089] Furthermore, the insertion portion 320b has four outer ends 320b1 (see Figure 6(b)) on its outer edge, which are formed in a cross shape when viewed from the left or right (viewed in the direction of arrows LR), and these ends are positioned to face the inner corners 40a (see Figure 6(b)) of the connecting member 40, which is formed from a square steel pipe.
[0090] The insertion portion 320b and the connecting member 40 are connected by welding Y4 to the inside of the connecting member 40, with the side of the outer end 320b1 facing outwards (viewed in the direction of arrows LR). This allows for a maximum of eight connection points between the insertion portion 320b and the connecting member 40 by welding Y4. Therefore, even when the insertion portion 320b of the brace material 320 is inserted inside the connecting member 40, the amount of connection between the connecting member 40 and the brace material 320 can be ensured.
[0091] Furthermore, since the brace material 320 is formed in a cross shape when viewed from the left and right (arrows LR direction), the space between the brace material 320 provides the necessary working space for welding the insertion portion 320b and the connecting member 40. As a result, the insertion portion 320b can be easily welded to the inner surface of the connecting member 40.
[0092] Furthermore, in the third embodiment, the brace member 320 has a restricting member 323 and a reinforcing member 222 arranged at predetermined intervals in the left-right direction on its side surface when viewed in the left-right direction (view in the direction of arrows LR). The restricting member 323 is a member that suppresses deformation of the brace member 320 in a direction perpendicular to the left-right direction, and is arranged on both sides of the outer end 220a side when viewed in the left-right direction.
[0093] When the restricting member 323 is positioned on the brace member 320, the side surface facing the inner surface of the restraining member 30 is formed parallel to the inner surface of the restraining member 30, and the side surface facing the inner surface of the restraining member 30 is formed to a size that separates it from the inner surface of the restraining member 30 by a predetermined distance.
[0094] Therefore, when force is applied to the damper device 310, if the brace material 320 is to deform in a direction perpendicular to the left-right direction (arrows LR direction), the restricting member 323 can be brought into contact with the inner surface of the restraint material 30. This contact between the inner surface of the restraint material 30 and the restricting member 323 can suppress the deformation of the brace material 320 in a direction perpendicular to the left-right direction.
[0095] Furthermore, since the restricting member 323 is positioned on the outer end 220a side facing the inner corner 30a of the restraining material 30, it is possible to position the restricting member 323 closer to the inner surface of the restraining material 30 without increasing the outer size of the restricting member 323. As a result, the size of the restricting member 323 can be suppressed, and the manufacturing cost of the restricting member 323 can be reduced.
[0096] The restraining member 30 and the connecting member 40 are formed to have the same shape and size when viewed from the left and right (arrows LR direction), and are welded together with the other end of the restraining member 30 (arrow L direction side) and the other end of the connecting member (arrow R direction side) in contact with each other. In the damper device 310 of the third embodiment, a groove is formed at the other end of the restraining member 30 (arrow L direction side), and the restraining member 30 and the connecting member 40 are connected by welding Y5 to fill the groove.
[0097] Next, a method for manufacturing the damper device 310 in the third embodiment will be described. In the first step, the insertion portion 320b of the brace material 320, on which the reinforcing member 222 and the restricting member 323 are arranged, is inserted into the other end (direction of arrow R) of the connecting member 40, and the connecting member 40 and the insertion portion 320b are connected by welding Y4.
[0098] In the second step, the restraining member 30, which has one end of the brace material 320 (in the direction of arrow R) facing inward, is moved from one end of the brace material 320 toward the other end (in the direction of arrow L), and the restraining member 30 and the connecting member 40 are connected by welding Y5 at positions adjacent to each other in the left-right direction (in the direction of arrows LR).
[0099] The damper device 310 in the third embodiment is manufactured through these first and second steps. In the damper device 310 manufactured as described above, even in a structure in which a restraining member 30 is arranged around the brace member 320, the connection work between the insertion portion 320b, which is inserted inside the connecting member 40, and the inner surface of the connecting member 40 can be easily performed.
[0100] Furthermore, since the restraining member 30 and the connecting member 40 are formed from members of the same shape and size when viewed in the left-right direction (view in the direction of arrows LR), the gap formed between the restraining member 30 and the brace member 320 can be reduced without changing the outer shape of the insertion portion 320b of the brace member 320.
[0101] In other words, since the insertion portion 320b of the brace material 320 is formed to a size that allows it to be welded to the inner surface of the connecting member 40, the gap between the brace material 320 and the inner surface of the restraint material 30 in the left-right direction (view in the direction of arrows LR) can be made small enough to allow welding between the brace material 320 and the inner surface of the restraint material 30. As a result, the deformation of the brace material 320 in the direction perpendicular to the left-right direction can be easily suppressed by the restraint material 30.
[0102] Furthermore, the effective amount of connection between the restraining member 30 and the connecting member 40 can be secured at the connection portion between the insertion portion 320b and the connecting member 40. As a result, when force is applied to the damper device 10, buckling of the connection portion between the restraining member 30 and the connecting member 40 in a direction perpendicular to the left-right direction (arrow LR direction) can be suppressed. In addition, since the intermediate member 50 can be made unnecessary as in the damper device 10 of the first embodiment, the manufacturing cost of the damper device 310 can be reduced.
[0103] Although the present invention has been described above based on the above embodiments, it can be easily inferred that the present invention is not limited in any way to the above embodiments, and that various modifications and improvements are possible without departing from the spirit of the present invention.
[0104] In the first to third embodiments described above, the case in which the connecting member 40 is formed in a hollow shape was explained, but it is not necessarily limited to this, and the connecting member 40 may also be formed from a solid columnar body.
[0105] In the first to third embodiments described above, the case in which the restraining member 30 and the connecting member 40 are formed in a hollow shape was explained, but a material such as concrete or mortar may be injected into the inside of the restraining member 30 and the connecting member 40. The concrete or mortar may be injected into the inside of either the restraining member 30 or the connecting member 40.
[0106] In this case, by injecting concrete or mortar into the restraining member 30, which has brace members 20, 220, and 320 arranged on its interior, and hardening it, buckling of the brace members 20, 220, and 320 in the direction perpendicular to the left-right direction (arrows LR direction) can be suppressed. Therefore, some or all of the reinforcing members 22, 222 and restricting members 323 that are arranged on the sides of the brace members 20, 220, and 320 in order to suppress buckling of the brace members 20, 220, and 320 in the direction perpendicular to the left-right direction can be omitted.
[0107] Furthermore, by injecting concrete or mortar into the connecting member 40 and hardening it, buckling of the connecting member 40 in the direction perpendicular to the left-right direction (arrows LR direction) can be suppressed. Therefore, the cross-sectional area of the connecting member 40 can be reduced.
[0108] In the first to third embodiments described above, cases in which the brace members 20, 220, and 320 are formed by combining or bending iron plates having a predetermined thickness were explained, but the invention is not necessarily limited to these cases, and the brace members 20, 220, and 320 may be formed from a single iron plate or solid steel material.
[0109] In the first to third embodiments described above, a predetermined gap was described between the brace members 20, 220, and 320 and the inner surface of the restraint member 30 when viewed in the left-right direction (view in the direction of arrows LR). However, even if the brace members 20, 220, and 320 are formed to a size that contacts the inner surface of the restraint member 30, they may also be arranged so that a part of the brace members 20, 220, and 320 contacts the inner surface of the restraint member.
[0110] In the first to third embodiments described above, the case in which the outer shape of the restraint member 30 and the connecting member 40 in a left-right view is formed in a square shape was explained, but it is not necessarily limited to this, and the outer shape of the restraint member 30 and the connecting member 40 in a left-right view may also be formed in a rectangular shape.
[0111] In the first and second embodiments described above, the case in which the restraining member 30 and the connecting member 40 are formed to have the same shape when viewed in the left-right direction (view in the direction of arrows LR) was explained, but the invention is not necessarily limited to this. For example, one of the restraining member 30 or the connecting member 40 may be formed to have a thickness thinner than the other, or one of the restraining member 30 or the connecting member 40 may be formed to have an outer shape that is slightly larger than the other when viewed in the left-right direction.
[0112] In the first and second embodiments described above, the case in which plate materials 21 and 221 are arranged on the other end side of the brace materials 20 and 220 has been explained, but the invention is not necessarily limited to this, and the invention may also be configured without plate materials 21 and 221, or the plate materials 21 and 221 may be arranged from one end to the other end of the brace material.
[0113] In the first and second embodiments described above, the case in which the other end of the restraint member 30 (in the direction of arrow L) and the other end of the brace members 20 and 220 (in the direction of arrow L) are connected by welding Y3 was explained. However, the invention is not necessarily limited to this, and the other end of the restraint member 30 and the other end of the brace members 20 and 220 may not be directly connected. In this case, the brace members 20 and 220 can be connected to the intermediate member 50 by welding other than welding Y3.
[0114] In the first and second embodiments described above, the cases in which the outer shape of the brace members 20 and 220 in the left-right view (view in the direction of arrows LR) is formed to be different from the inner shape of the restraint member 30 were described. However, the invention is not limited to this, and for example, the outer shape of the brace members 20 and 220 in the left-right view may be formed to be the same as the inner shape of the restraint member 30.
[0115] In this case, a frame-like structure can be formed on the other end (in the direction of arrow L) of the brace members 20 and 220 without having to arrange the plate members 21 and 221 on the brace members 20 and 220.
[0116] Therefore, when connecting the restraining member 30 and the intermediate member 50 by welding Y3, the frame-like structure formed on the other end of the brace member 20 (in the direction of arrow L) is connected to the entire circumference of the restraining member 30, while simultaneously connecting the brace member 20 and the restraining member 30 to the intermediate member 50.
[0117] Furthermore, when connecting the frame-shaped structure formed on the other end of the brace material 20 (in the direction of arrow L) to the entire circumference of the restraint material 30, and connecting the brace material 20 and the restraint material 30 to the intermediate material 50, by making the outer shape and size of the restraint material 30 and the connecting member 40 substantially the same in an axial view, it is possible to suppress the concentration of force on a part of the circumferential direction of the brace material 20 when force is transmitted from the connecting member 40 to the brace material 20. As a result, when force is applied to the damper device 10, local buckling of the connecting member 40 and the brace material 20 can be suppressed.
[0118] Furthermore, unlike the damper devices 10 and 210 in the first and second embodiments, there is no need to arrange the plate materials 21 and 221 on the brace materials 20 and 220. Therefore, the manufacturing process of the damper device 10 and 210 can be simplified because there is no need to arrange the plate materials 21 and 221.
[0119] In the first and second embodiments described above, cases in which reinforcing members 22 and 222 are provided on the brace members 20 and 220 were described, but the invention is not necessarily limited to this, and there may be cases in which the reinforcing member 222 is not provided.
[0120] In the second and third embodiments described above, the case in which the two directions forming a cross shape in the left-right view (view in the direction of arrows LR) are arranged along the diagonal direction of the restraint member 30 was explained. However, the invention is not limited to this, and the two directions forming a cross shape in the left-right view may also be arranged along the inner surface of the restraint member 30.
[0121] In the third embodiment described above, a case in which a reinforcing member 222 and a restricting member 323 are provided on the brace member 320 was explained, but the invention is not necessarily limited to this, and either the reinforcing member 222 or the restricting member 323 may be provided on the brace member 320, or neither the reinforcing member 222 nor the restricting member 323 may be provided on the brace member 320.
[0122] In the third embodiment described above, the case was described in which the outer shape of the insertion portion 320b in the left-right view (view in the direction of arrows LR) is formed to be the same as the outer shape of the brace material 320 inserted inside the restraint material 30, but it is not necessarily limited to this. For example, the outer shape of the insertion portion 320b may be made larger than the outer shape of the brace material 320 inserted inside the restraint material 30, so that the outer end 320b1 of the insertion portion 320b abuts against the inner corner 40a of the connecting member 40.
[0123] In the third embodiment described above, the case in which the restricting members 323 are arranged at predetermined intervals in the left-right direction (arrows LR direction) was explained, but the embodiment is not necessarily limited to this. For example, the restricting members 323 may extend along the brace material 320 in the left-right direction (arrows LR direction). [Explanation of Symbols]
[0124] 1 structure 10,210,310 Damper device 20,220,320 bracing material 220a Outer end 320b Insertion section 21,221 plate material 22,222 Reinforcement members 323 Regulatory Member 30 Restraint material 30a Corner 40 Connecting member 50 Intermediate material LR direction Left and right direction (axial direction) FB direction, Forward / Backward direction (First direction) UD direction, Up / Down direction (second direction)
Claims
1. In a damper device installed between two points in a structure, The structure comprises a brace member extending in the axial direction connecting two points of the structure, with one end of the extended brace member connected to one of the two points of the structure; a restraining member formed in a hollow shape surrounding the brace member; a connecting member with one end connected to the other of the two points of the structure, and the other end indirectly connected to the restraining member; and an intermediate member disposed between the restraining member and the connecting member in the axial direction. The brace material is formed from a material with a lower yield point than the connecting member, and its other end is indirectly connected to the other end of the connecting member. A damper device characterized in that the restraining member and the connecting member are formed in a hollow shape, and the other end of the restraining member and the other end of the connecting member are connected via the intermediate member.
2. The restraining member and the connecting member are formed to have substantially the same external shape and size in the axial view. The outer shape of the other end of the brace material in the axial view is formed to be substantially the same as the inner shape of the restraint material. The damper device according to claim 1, characterized in that the other ends of the brace material and the restraint material are connected to the intermediate material in a state where the entire circumference of the restraint material and the entire circumference of the brace material are connected.
3. The restraining member and the connecting member are formed to have substantially the same external shape and size in the axial view. The outer shape of the brace material in the axial view is formed to be different from the inner shape of the restraint material. Multiple plate members are connected to the other end of the brace member, and are arranged parallel to the inner surface of the restraint member. The damper device according to claim 1, characterized in that the other ends of the brace material and the restraint material are connected to the intermediate material in a state in which the entire circumference of the restraint material, a part of the brace material, and the plurality of plate materials are connected.
4. A damper device installed between two points of a structure, The structure comprises a brace member extending in the axial direction connecting two points of the structure, with one end of the extended brace member connected to one of the two points of the structure; a hollow restraint member surrounding the brace member; and a connecting member with one end connected to the other of the two points of the structure, with the other end directly connected to the other end of the restraint member. The restraining member and the connecting member are formed in a hollow shape. The damper device is characterized in that the brace material has an insertion portion on the other end that is inserted inside the connecting member, is made of a material with a lower yield point than the connecting member, and the insertion portion is connected to the inner surface of the connecting member.
5. The damper device according to claim 4, characterized in that the brace material has a cross-shaped outer shape in the axial view, and four end sides in the axial view are connected to the inner surface of the connecting member.
6. The damper device according to claim 4, characterized in that the restraining member and the connecting member are formed from the same material and are formed to have substantially the same shape and size in the axial view.
7. A method for manufacturing a damper device according to any one of claims 4 to 6, The first step involves inserting the insertion portion of the brace material into the inside of the connecting member and connecting the insertion portion and the connecting member, A method for manufacturing a damper device, comprising: a second step of displacing the restraining member, into which one end of the brace member is inserted, toward the other end of the brace member, and then connecting the restraining member and the connecting member.
8. A damper device disposed between two points of a structure, The structure comprises a brace member extending in the axial direction connecting two points of the structure, with one end of the extended brace member connected to one of the two points of the structure; a restraining member formed in a hollow shape surrounding the brace member; and a connecting member with one end connected to the other of the two points of the structure, with the other end directly or indirectly connected to the restraining member. The restraining material has an inner surface shape that is square or rectangular. The brace material is formed from a material with a lower yield point than the connecting member, and its other end is directly or indirectly connected to the other end of the connecting member. The brace material has a cross-shaped outer shape in the axial view, and each of its four ends in the axial view is positioned opposite the inner corner of the restraint material. A damper device characterized by having regulating members on both sides of the four end sides of the brace material in the axial view.
9. The damper device according to any one of claims 1, 4, or 8, characterized in that the brace material is formed to have an outer shape smaller than the inner shape of the restraint material in the axial view.
10. The damper device according to claim 9, characterized in that a predetermined gap is formed between the brace material and the inner surface of the restraint material in the axial view.
11. In the axial view, the brace material is provided with a reinforcing member on its side surface. The damper device according to claim 1 or 4, characterized in that the brace material is formed in a cross shape or H shape, the outer shape in the axial view being smaller than the inner shape of the restraint material in the axial view.