Vibration damping brace structure
The integration of adhesively joined viscoelastic dampers with wood-based support materials in a vibration-damping brace structure addresses stress concentration issues, ensuring effective vibration reduction and a wood-like appearance with a simplified attachment method.
Patent Information
- Application Number
- JP2025248260
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-02-24
AI Technical Summary
Existing vibration-damping brace structures using wood-based components face issues with stress concentration at mounting points, leading to reduced rigidity and ineffective vibration reduction, and complex attachment methods.
A vibration-damping brace structure combining a viscoelastic damper and a wood-based support material, where the damper is adhesively joined to the wood-based material, eliminating the need for steel fasteners and allowing the damper to effectively reduce vibrations while maintaining a wood-like texture.
The structure effectively reduces vibrations with a simple design by preventing the damper from sinking into the wood-based material and simplifying the connection process, enhancing the damping performance.
Smart Images
Figure 2026031803000001_ABST
Abstract
Description
[Technical Field]
[0001] The present invention relates to a vibration-damping brace structure that combines a viscoelastic damper and a wood-based support material. [Background technology]
[0002] Viscoelastic dampers are used to improve the vibration control performance of buildings. Viscoelastic dampers exert vibration control performance against building sway caused by wind and earthquakes. For example, Patent Document 1 discloses a seismic damper that includes an inner member attached to one part of the framework of a structure and on which an axial force acts, an outer member attached to the other part of the framework and on which an axial force acts, and a viscoelastic body interposed between the inner member and the outer member. Furthermore, Patent Document 2 discloses a seismic damper that consists of multiple steel plates and a viscoelastic body bonded between each steel plate, with one end of the steel plate connected to a connecting member on the frame side of the building. Patent Document 3 also discloses a vibration suppression device for a structure in which a steel inner brace component extending in the longitudinal direction of the brace is placed within a retaining hole in a steel outer brace component extending in the longitudinal direction of the brace, a viscoelastic layer is interposed between the peripheral surface of the part of the inner brace component that is placed within the outer brace component and the inner peripheral surface of the outer brace component and fixed thereto, and an expansion and contraction allowance gap is provided between the deepest part of the outer brace component and the tip of the inner brace component to form a vibration suppression brace component, and both ends of the vibration suppression brace component are connected to the frame of the building.
[0003] When using such a viscoelastic damper as, for example, a brace, it is conceivable to use wood-based components to create an exposed wood appearance in order to enhance the design. When using wood-based components, stress may concentrate between the mounting components, such as bolts, used to attach the wood-based components, and the wood-based components, causing the mounting components to sink into the wood-based components. When the mounting components sink into the wood-based components, the rigidity of the joint decreases. Therefore, even if a brace is constructed by combining wood-based components with a viscoelastic damper, the performance of the viscoelastic damper may not be fully utilized, and vibration may not be effectively reduced. Furthermore, when wooden members are attached using bolts or the like, the attachment may become complicated. It is desirable to use wood-based materials to create a wood-like texture while effectively reducing vibrations with a simple structure. [Prior art documents] [Patent documents]
[0004] [Patent Document 1] Patent No. 4950913 [Patent Document 2] Japanese Patent Application Laid-Open No. 2016-56605 [Patent Document 3] Japanese Patent Application Publication No. 3-262881 Summary of the Invention [Problem to be solved by the invention]
[0005] The problem that the present invention aims to solve is to provide a vibration-damping brace structure that uses wood-based components to give the brace structure the texture of wood, while having a simple structure that effectively reduces vibrations. [Means for solving the problem]
[0006] In order to solve the above problems, the present invention employs the following means. In other words, the vibration-damping brace structure of the present invention is a vibration-damping brace structure that combines a viscoelastic damper and a wood-based support material, and is characterized by comprising: a first connecting steel plate joined to a first part of the frame of a structure; the wood-based support material that is fixed to a second part of the frame, extends toward the first connecting steel plate, and is arranged so as to be movable relative to the first connecting steel plate; and a viscoelastic damper adhesively joined to the first connecting steel plate and the wood-based support material. When joining a component to a wood-based support material using steel fasteners such as bolts or nails, stress is concentrated around the bolts or nails on the wood-based support material, which can potentially cause the component to sink into the wood-based support material. In contrast, with the above-described configuration, the viscoelastic damper and the wood-based support material are adhesively joined. This reduces the likelihood of the viscoelastic damper sinking into the wood-based support material compared to when the viscoelastic damper is joined to the wood-based support material using steel fasteners such as bolts or nails. In this way, the viscoelastic damper joined to the wood-based support material is prevented from sinking into the wood-based support material, allowing the performance of the viscoelastic damper to be effectively demonstrated and vibrations to be effectively reduced. Furthermore, the viscoelastic dampers are adhesively bonded to both the wood support material and the first connecting steel plate. This eliminates the need to use bolts to attach the viscoelastic dampers. This eliminates the need to provide a joint margin on the viscoelastic dampers for fastening the bolts, simplifying the connection. In this way, it is possible to provide a vibration-damping brace structure that uses wood-based components to give the brace the texture of wood, while effectively reducing vibrations with a simple structure.
[0007] In one aspect of the present invention, the wood-based support material and the viscoelastic damper are each provided in pairs, and the pair of wood-based support materials are arranged to sandwich the first connecting steel plate via the pair of viscoelastic dampers. With this configuration, the viscoelastic damper and the wood-based support material are provided on both sides of the first connecting steel plate. By providing multiple viscoelastic dampers in this way, the vibration damping performance of the vibration-damping brace structure can be improved.
[0008] In one aspect of the present invention, the first connecting steel plate and the viscoelastic damper are each provided in pairs, and the pair of first connecting steel plates are arranged to sandwich the wood-based support material via the pair of viscoelastic dampers, and the first connecting steel plate and the viscoelastic damper, and the viscoelastic damper and the wood-based support material are each joined with structural adhesive. With this configuration, the viscoelastic damper and the first connecting steel plate are provided on both sides of the wood-based support material. By providing multiple viscoelastic dampers in this way, the vibration damping performance of the vibration-damping brace structure can be improved. [Effects of the Invention]
[0009] According to the present invention, it is possible to effectively reduce vibrations with a simple structure while providing the texture of wood by using wood-based members. [Brief explanation of the drawings]
[0010] [Figure 1] 1 is a view of a vibration-damping brace structure according to a first embodiment of the present invention, viewed from the wall thickness direction. FIG. [Figure 2] FIG. 1 is a cross-sectional view showing a vibration-damping brace structure according to a first embodiment of the present invention. [Figure 3] FIG. 2 is an enlarged cross-sectional view showing a viscoelastic damper disposed on the upper portion of the vibration-damping brace structure according to the first embodiment of the present invention. [Figure 4A] FIG. 2 is a plan view of the viscoelastic damper. [Figure 4B] FIG. 2 is a side view of the viscoelastic damper. [Figure 5] FIG. 1 is a cross-sectional view showing a vibration-damping brace structure according to a modified example of the first embodiment of the present invention. [Figure 6]FIG. 4 is a cross-sectional view showing a vibration-damping brace structure according to a second embodiment of the present invention. [Figure 7] FIG. 10 is a cross-sectional view showing a vibration-damping brace structure according to a modified example of the second embodiment of the present invention. [Figure 8] FIG. 1 is a diagram showing the planar configuration of a skeleton model used in a simulation study conducted to confirm vibration control performance. [Figure 9] FIG. 10 is a diagram showing the results of a simulation performed to confirm vibration damping performance. DETAILED DESCRIPTION OF THE INVENTION
[0011] The present invention is a vibration-damping brace structure 10 in which a viscoelastic damper, in which an upper steel plate and a lower steel plate sandwiching high-damping rubber are vulcanized and bonded, and a wood-based support material are adhesively joined with structural adhesive J. Specifically, in the first embodiment, a pair of viscoelastic dampers 50 and wooden support materials 40 are provided on both sides of connecting steel plates 20, 30 joined to the framework of the structure (Figs. 1 to 5). In the second embodiment, one wooden support material 40 is provided between the pair of connecting steel plates 20, 30 joined to the framework of the structure (Figs. 6 and 7). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out a vibration-damping brace structure according to the present invention will be described with reference to the accompanying drawings. (First embodiment) Fig. 1 shows a view of the vibration-damping brace structure according to the first embodiment of the present invention as seen from the wall thickness direction. Fig. 2 is a cross-sectional view showing the vibration-damping brace structure according to the first embodiment of the present invention. Fig. 3 is an enlarged cross-sectional view showing a viscoelastic damper arranged on top of the vibration-damping brace structure according to the first embodiment of the present invention. As shown in FIGS. 1 and 2 , the vibration-damping brace structure 10A is provided in a frame 2 of a structure 1 so as to extend diagonally between beams 3A and 3B positioned above and below each other and between columns 4A and 4B adjacent in the horizontal direction. In this embodiment, the beams 3A and 3B are each made of H-shaped steel and have an upper flange 3f, a lower flange 3b, and a web 3c provided between the upper flange 3f and the lower flange 3b. Each of the beams 3A and 3B has an end 3s on one side in the extension direction Da joined to one column 4A. Each of the beams 3A and 3B has an end 3t on the other side in the extension direction Da joined to the other column 4B. In this embodiment, the columns 4A and 4B are made of steel pipes whose cross-sectional shape when viewed from the vertical direction Dv is rectangular in plan view.
[0012] The vibration-damping brace structure 10A is a combination of a viscoelastic damper 50A and a wood-based support material 40A. The vibration-damping brace structure 10A includes a first connecting steel plate 20A, a second connecting steel plate 30A, a wood-based support material 40A, and a viscoelastic damper 50A. The first connecting steel plate 20A is fixed to a first portion P1 of the frame 2, which is the joint between one end portion 3s of the upper beam 3A and one column 4A. The first connecting steel plate 20A is joined to the underside of the lower flange 3b of the upper beam 3A and to the side surface of the column 4A, for example, by welding. The first connecting steel plate 20A may be joined to the underside of the lower flange 3b of the upper beam 3A and to the side surface of the column 4A via an appropriate bracket (not shown) by welding, bolting, or the like. The first connecting steel plate 20A extends vertically downward from the center of the lower flange 3b of the upper beam 3A in the beam width direction Dt, which intersects both the extension direction Da of the beams 3A, 3B and the up-down direction Dv. The second connecting steel plate 30A is fixed to a second portion P2 of the frame 2, which is the joint between an end portion 3t of the lower beam 3B opposite to the end portion 3s joined to one column 4A and the other column 4B adjacent to the column 4A. The second connecting steel plate 30A is joined to the upper surface of the upper flange 3f of the lower beam 3B and to the side surface of the other column 4B, for example, by welding. The second connecting steel plate 30A may be joined to the upper surface of the upper flange 3f of the lower beam 3B and to the side surface of the other column 4B via an appropriate bracket (not shown) by welding, bolting, or the like. The second connecting steel plate 30A extends vertically upward from the center of the upper flange 3f of the lower beam 3B in the beam width direction Dt. In this way, the vibration-damping brace structure 10A is provided so as to connect the corners located on the diagonal of the rectangular frame surface formed by two adjacent columns 4A, 4B, the upper beam 3A, and the lower beam 3B.
[0013] The wood-based supporting members 40A are long plates extending diagonally between the second portion P2 and the first portion P1 of the frame 2. As shown in Fig. 2, a pair of wood-based supporting members 40A are provided on both sides of the first connecting steel plate 20A and the second connecting steel plate 30A in the beam width direction Dt. The pair of wood-based supporting members 40A are provided with a gap in between in the beam width direction Dt. Each wood-based supporting member 40A is formed, for example, from CLT (Cross Laminated Timber). As shown in FIG. 3, one end 40t of the wood-based support material 40A is connected to the first portion P1 of the frame 2 via a viscoelastic damper 50A and a first connecting steel plate 20A.
[0014] The viscoelastic damper 50A is interposed between the surface 20f of the first connecting steel plate 20A facing outward in the beam width direction Dt and the surface 40f of the wood-based support material 40A arranged opposite to surface 20f. A pair of viscoelastic dampers 50A is provided on both sides of the first connecting steel plate 20A. As a result, each of the pair of wood-based support materials 40A is arranged to sandwich the first connecting steel plate 20A between each of the pair of viscoelastic dampers 50A. The viscoelastic damper 50A damps the relative movement between the first connecting steel plate 20A and the wood-based support material 40A. The viscoelastic damper 50A integrally includes a first steel plate 51, a second steel plate 52, and high-damping rubber 53. 4A and 4B are a plan view and a side view, respectively, of the viscoelastic damper. The viscoelastic damper 50A is integrally formed by laminating a first steel plate 51, a high-damping rubber 53, and a second steel plate 52 in this order. The first steel plate 51 and the second steel plate 52 are arranged parallel to each other and spaced apart from each other. The high-damping rubber 53 is provided between the first steel plate 51 and the second steel plate 52. In this embodiment, the viscoelastic damper 50A is manufactured by providing the first steel plate 51 and the second steel plate 52 spaced apart from each other and vulcanizing the high-damping rubber 53 between them, so that the first steel plate 51, the second steel plate 52, and the high-damping rubber 53 are vulcanization-bonded together and integrated into one piece. In particular, in this embodiment, the viscoelastic damper 50A is formed so that its shape is approximately square when viewed from the thickness direction, and is used as a unit.
[0015] The high-damping rubber 53 has low temperature dependency and low frequency dependency, and has a high damping capacity per unit area. The high-damping rubber 53 is a rubber with high hardness. Compared to other types of rubber that can be used as viscoelastic dampers, the high-damping rubber 53 has a high damping force and can be used for earthquake resistance. More specifically, in this embodiment, the high-damping rubber 53 is an isoprene-based rubber that has nonlinear characteristics, an allowable strain of 200%, a limit strain of 300%, and a maximum damping force of 400 kN. In this embodiment, the high-damping rubber 53 has a small temperature dependency of 0.70 (30°C / 10°C). More specifically, the amount of energy absorption of the high-damping rubber 53 decreases less than that of linear rubber when the temperature rises, for example, from 0°C to 40°C. Thus, the high-damping rubber 53 has a small temperature dependency and can absorb large amounts of energy even when the temperature rises. Furthermore, when the relationship between shear stress and strain is graphed, the high-damping rubber 53 has a larger hysteresis loop than linear rubber, and therefore can handle even large shear stresses. For example, "VS4" manufactured by Sumitomo Rubber Industries, Ltd. can be used as the high-damping rubber 53.
[0016] 3, at the end 40t of the wood-based support material 40A, the first steel plate 51 and the second steel plate 52 of each viscoelastic damper 50A are adhesively bonded to the surfaces 40f, 20f of the wood-based support material 40A and the first connecting steel plate 20A, respectively, via an adhesive layer 50j made of structural adhesive J. The wood-based support material 40A and the viscoelastic damper 50A, and the viscoelastic damper 50A and the first connecting steel plate 20A are each bonded with the structural adhesive J. The first steel plate 51 of each viscoelastic damper 50A abuts on its surface against the surface 40f of the wood-based support material 40A and is bonded to the surface 40f of the wood-based support material 40A with a structural adhesive J. The second steel plate 52 of each viscoelastic damper 50A abuts on its surface against the surface 20f of the first connecting steel plate 20A and is bonded to the surface 20f of the first connecting steel plate 20A with a structural adhesive J.
[0017] Structural adhesive J is an adhesive that is said to have a joining strength that is more than twice as strong as joining methods such as spot welding, bolt joining, rivet joining, etc. Therefore, structural adhesive J is characterized by high joining strength for connecting components and excellent durability, and includes epoxy-based adhesives, acrylic-based adhesives, urethane-based adhesives, etc. Specifically, in the vibration-damping brace structure of the present invention, the structural adhesive J is used as the high-damping rubber 53 of the viscoelastic damper 50A. 2) and sufficient peel strength (4.5N / mm or more) and shear strength (15N / mm 2 It is desirable to use a structural adhesive that meets the above requirements. For structural adhesive J, it is desirable to use a two-component acrylic resin that can adhere even if the surface is slightly uneven, oily, or dusty, and has a short curing time. For example, "Y618H" or "Y630D" from the two-component acrylic resin Metallock series manufactured by Cemedine Co., Ltd. can be used.
[0018] The other end 40s of the wood-based support material 40A, opposite the end 40t where the viscoelastic damper 50A is provided, is fixed to the second portion P2 of the frame 2 via the second connecting steel plate 30A. A spacer 70 having a predetermined thickness in the beam width direction Dt is sandwiched between the end 40s of the wood-based support material 40A and the second connecting steel plate 30A. The spacer 70 is made of wood, for example. The spacer 70 has the same thickness as the viscoelastic damper 50A. A surface 40f of the wood-based support material 40A facing inward in the beam width direction Dt abuts against a surface 70f of the spacer 70 facing outward in the beam width direction Dt. A surface 70g of the spacer 70 facing inward in the beam width direction Dt abuts against a surface 30f of the second connecting steel plate 30A facing outward in the beam width direction Dt. The surface 40f of the wood-based support material 40A and the surface 70f of the spacer 70, and the surface 70g of the spacer 70 and the surface 30f of the second connecting steel plate 30A are bonded together with a structural adhesive J, respectively. The wood-based support material 40A, the spacer 70, and the second connecting steel plate 30A may be joined with bolts. However, if bolts are used to join these components, stress may be concentrated around the bolted portion of the wood-based support material 40A, potentially causing deformation of the wood-based support material 40A. Therefore, it is more desirable to join these components using a structural adhesive J, as in this embodiment.
[0019] 1 and 2, between a pair of wood-based support members 40A, connecting members 80 are provided at predetermined intervals in the direction in which the wood-based support members 40A extend. The connecting members 80 are sandwiched between the pair of wood-based support members 40A. The connecting members 80 are made of wood, for example.
[0020] In this way, one end 40t of the wood-based support material 40A is connected via the viscoelastic damper 50A to the first connecting steel plate 20A joined to the first part P1 of the frame 2 of the structure 1, and the other end 40s is fixed to the second part P2 of the frame 2, so that the end 40t of the wood-based support material 40A is movable relative to the first connecting steel plate 20A. In this configuration, when the structure 1 equipped with the vibration-damping brace structure 10A shakes due to, for example, an earthquake or strong wind, the upper beam 3A and the lower beam 3B are displaced relative to each other. At this time, the second connecting steel plate 30A and the wood-based support member 40A are displaced integrally with the lower beam 3B, and the first connecting steel plate 20A is displaced integrally with the upper beam 3A. In the viscoelastic damper 50A, the first steel plate 51 and the second steel plate 52 then attempt to displace relative to each other. This relative displacement is damped by the high-damping rubber 53 of the viscoelastic damper 50A, which is provided between the first steel plate 51 and the second steel plate 52, thereby damping the shaking of the structure 1.
[0021] The vibration-damping brace structure 10A described above is a vibration-damping brace structure 10A in which the viscoelastic damper 50A and the wood-based support material 40A are combined, and includes a first connecting steel plate 20A joined to the first portion P1 of the framework 2 of the structure 1, a wood-based support material 40A fixed to the second portion P2 of the framework 2, extending toward the first connecting steel plate 20A and provided so as to be movable relative to the first connecting steel plate 20A, and a support material 40A interposed between the surfaces 20f, 40f of the first connecting steel plate 20A and the wood-based support material 40A, and the support material 40A is provided so as to be movable relative to the first connecting steel plate 20A. and a viscoelastic damper 50A that damps the relative movement between the wood-based support material 40A and the first connecting steel plate 20A. The viscoelastic damper 50A comprises a first steel plate 51 and a second steel plate 52 spaced apart from each other, and high-damping rubber 53 provided between the first steel plate 51 and the second steel plate 52. The first steel plate 51 and the second steel plate 52 are each vulcanization-bonded to the high-damping rubber 53, and the first steel plate 51 and the second steel plate 52 are adhesively bonded to the surfaces 40f, 20f of the wood-based support material 40A and the first connecting steel plate 20A via adhesive layers 50j, respectively. With this configuration, the viscoelastic damper 50A is provided such that the first steel plate 51 of the viscoelastic damper 50A is bonded to the surface 40f of the wood-based support material 40A, and the second steel plate 52 is bonded to the first connecting steel plate 20A. Because the viscoelastic damper 50A is bonded to the surface 40f of the wood-based support material 40A, the bonded surface between the viscoelastic damper 50A and the wood-based support material 40A is flat, while the bonded area is large, making it possible to distribute the stress acting from the first connecting steel plate 20A to the wood-based support material 40A over a wide area. This prevents the first steel plate 51 from sinking into the wood-based support material 40A. Furthermore, if steel fasteners such as bolts or nails are used to join any component to the wood-based support material 40A, stress may concentrate around the bolts or nails on the wood-based support material 40A, causing the component to sink into the wood-based support material 40A. In contrast, with the above-described configuration, the first steel plate 51 of the viscoelastic damper 50A and the wood-based support material 40A are adhesively joined via the adhesive layer 50j. This reduces the sinking of the first steel plate 51 into the wood-based support material 40A compared to when the first steel plate 51 is joined to the wood-based support material 40A using steel fasteners such as bolts or nails. In this way, the first steel plate 51 joined to the wood-based support material 40A is prevented from sinking into the wood-based support material 40A, allowing the performance of the viscoelastic damper 50A to be effectively demonstrated and vibrations to be effectively reduced. Furthermore, the first steel plate 51 and the second steel plate 52 of the viscoelastic damper 50A are adhesively bonded to the surfaces of the wood-based support material 40A and the first connecting steel plate 20A via adhesive layers 50j, respectively. This eliminates the need to use bolts to attach the viscoelastic damper 50A. This eliminates the need to provide joint margins in the first steel plate 51 and the second steel plate 52 for fastening the bolts, simplifying the connection of the joints. In this way, it is possible to provide a vibration-damping brace structure 10A that uses wood-based components to give the structure the texture of wood, while effectively reducing vibrations with a simple structure.
[0022] In addition, there are pairs of wood-based support materials 40A and viscoelastic dampers 50A, and each of the pair of wood-based support materials 40A is arranged to sandwich the first connecting steel plate 20A through each of the pair of viscoelastic dampers 50A.The wood-based support material 40A and the viscoelastic damper 50A, and the viscoelastic damper 50A and the first connecting steel plate 20A are each joined with structural adhesive J, and the structure further includes a second connecting steel plate 30A joined to the second part P2, and the surface 40f of the wood-based support material 40A is fixed to the second connecting steel plate 30A using structural adhesive J or bolts. According to this configuration, the viscoelastic dampers 50A and the wood-based support materials 40A are provided on both sides of the first connecting steel plate 20A. By providing multiple viscoelastic dampers 50A in this way, the vibration damping performance of the vibration-damping brace structure 10A can be improved. Furthermore, where the wood-based support material 40A is fixed to the second portion P2 of the frame 2, the wood-based support material 40A is firmly joined to the second connecting steel plate 30A joined to the second portion P2 using structural adhesive J or bolts. By firmly fixing the wood-based support material 40A to the second portion P2 of the frame 2 in this way, displacement between the first portion P1 and the second portion P2 of the frame 2 due to vibrations caused by an earthquake or the like is concentrated and acts on the viscoelastic damper 50A arranged between the wood-based support material 40A and the first connecting steel plate 20A joined to the first portion P1. This makes it possible to more effectively demonstrate the vibration damping performance of the viscoelastic damper 50A.
[0023] Furthermore, between the pair of wood-based support members 40A, connecting members 80 are provided at predetermined intervals in the extending direction. This configuration increases the compressive and tensile stiffness of the wood-based support material 40A that constitutes the vibration-damping brace. As a result, displacement between the first portion P1 and the second portion P2 of the frame 2 due to vibrations caused by earthquakes or the like acts primarily on the viscoelastic damper 50A, which is located between the wood-based support material 40A fixed to the second portion P2 and the first connecting steel plate 20A joined to the first portion P1. This allows the viscoelastic damper 50A to more effectively exert its vibration-damping performance.
[0024] (Modification of the first embodiment) The vibration-damping brace structure of the present invention is not limited to the first embodiment described above with reference to the drawings, and various modifications are possible within the technical scope. FIG. 5 is a cross-sectional view showing a vibration-damping brace structure according to a modified example of the first embodiment of the present invention. This modified example has a configuration in which the first embodiment is reversed vertically. Similar to the first embodiment, the vibration-damping brace structure 10B of this modified example is provided so as to connect corners located on diagonal lines of a rectangular frame surface formed by two adjacent columns 4A, 4B, an upper beam 3A, and a lower beam 3B. As shown in FIG. 5, the vibration-damping brace structure 10B includes a first connecting steel plate 20B, a second connecting steel plate 30B, a wood-based support material 40B, and a viscoelastic damper 50B. The first connecting steel plate 20B is fixed to a first portion P11 of the frame 2, which is the joint between the lower beam 3B and the column 4B. The first connecting steel plate 20B is joined to the upper surface of the upper flange 3f of the lower beam 3B and to the side surface of the column 4B, for example, by welding. The first connecting steel plate 20B extends vertically upward from the center of the upper flange 3f of the lower beam 3B in the beam width direction Dt. The second connecting steel plate 30B is fixed to the second portion P12 of the frame 2, which is the joint between the upper beam 3A and the other column 4A adjacent to the column 4B. The second connecting steel plate 30B is joined, for example, by welding, to the underside of the lower flange 3b of the upper beam 3A and to the side surface of the other column 4A. The second connecting steel plate 30B extends vertically downward from the center of the lower flange 3b of the upper beam 3A in the beam width direction Dt.
[0025] The wood-based support materials 40B are long plates that extend diagonally between the second portion P12 and the first portion P11 of the frame 2. A pair of wood-based support materials 40B is provided on both sides of the first connecting steel plate 20B and the second connecting steel plate 30B in the beam width direction Dt. The pair of wood-based support materials 40B is provided with a gap between them in the beam width direction Dt. One end 40t of the wood-based support material 40B is connected to the first portion P11 of the framework 2 via a viscoelastic damper 50B and a first connecting steel plate 20B. The first steel plate 51 and the second steel plate 52 of each viscoelastic damper 50B are adhesively bonded to the surfaces 40f, 20f of the wood-based support material 40B and the first connecting steel plate 20B, respectively, via an adhesive layer 50j made of structural adhesive J. The first steel plate 51 of each viscoelastic damper 50B has its surface in contact with the surface 40f of the wood-based support material 40B and is bonded to the surface 40f of the wood-based support material 40B with a structural adhesive J. The second steel plate 52 of each viscoelastic damper 50B has its surface in contact with the surface 20f of the first connecting steel plate 20B and is bonded to the surface 20f of the first connecting steel plate 20B with a structural adhesive J.
[0026] The wood-based support material 40B is fixed to the second portion P12 of the frame 2 via the second connecting steel plate 30B. A spacer 70 is sandwiched between the wood-based support material 40B and the second connecting steel plate 30B. A surface 40f of the wood-based support material 40B and a surface 70f of the spacer 70 facing outward in the beam width direction Dt are in contact and joined with a structural adhesive J. A surface 70g of the spacer 70 facing inward in the beam width direction Dt are in contact and joined with a structural adhesive J to a surface 30f of the second connecting steel plate 30B. The wood-based support material 40B, the spacer 70, and the second connecting steel plate 30B may be joined with bolts. Between the pair of wood-based support materials 40B, the connecting members 80 are provided at predetermined intervals in the direction extending on the wood-based support materials 40B. The connecting members 80 are sandwiched between the pair of wood-based support materials 40B.
[0027] In this way, one end 40t of the wood-based support material 40B is connected via the viscoelastic damper 50B to the first connecting steel plate 20B joined to the first part P11 of the frame 2 of the structure 1, and the other end 40s is fixed to the second part P12 of the frame 2, so that the wood-based support material 40B is arranged to be movable relative to the first connecting steel plate 20B. In this configuration, when the structure 1 equipped with the vibration-damping brace structure 10B shakes due to, for example, an earthquake or strong wind, the lower beam 3B and the upper beam 3A are displaced relative to each other. At this time, the second connecting steel plate 30B and the wood-based support member 40B are displaced integrally with the upper beam 3A, and the first connecting steel plate 20B is displaced integrally with the lower beam 3B. In the viscoelastic damper 50B, the first steel plate 51 and the second steel plate 52 then attempt to displace relative to each other. This relative displacement is damped by the high-damping rubber 53 of the viscoelastic damper 50B, which is provided between the first steel plate 51 and the second steel plate 52, thereby damping the shaking of the structure 1.
[0028] According to the vibration-damping brace structure 10B described above, the vibration-damping brace structure 10B is a combination of the viscoelastic damper 50B and the wood-based support material 40B, and includes: a first connecting steel plate 20B joined to the first portion P11 of the framework 2 of the structure 1; a wood-based support material 40B fixed to the second portion P12 of the framework 2, extending toward the first connecting steel plate 20B and provided so as to be movable relative to the first connecting steel plate 20B; and a second connecting steel plate 20B interposed between the surfaces 20f, 40f of the first connecting steel plate 20B and the wood-based support material 40B. and a viscoelastic damper 50B that damps the relative movement between the wood-based support material 40B and the first connecting steel plate 20B. The viscoelastic damper 50B comprises a first steel plate 51 and a second steel plate 52 spaced apart from each other, and high-damping rubber 53 provided between the first steel plate 51 and the second steel plate 52, and the first steel plate 51 and the second steel plate 52 are vulcanization-bonded to the high-damping rubber 53, and the first steel plate 51 and the second steel plate 52 are adhesively bonded to the surfaces 40f, 20f of the wood-based support material 40B and the first connecting steel plate 20B, respectively, via adhesive layers 50j.
[0029] In addition, there are pairs of wood-based support materials 40B and viscoelastic dampers 50B, and each of the pair of wood-based support materials 40B is arranged to sandwich the first connecting steel plate 20B through each of the pair of viscoelastic dampers 50B.The wood-based support material 40B and the viscoelastic damper 50B, and the viscoelastic damper 50B and the first connecting steel plate 20B are each joined with structural adhesive J, and the structure further includes a second connecting steel plate 30B joined to the second part P12, and the surface 40f of the wood-based support material 40B is fixed to the second connecting steel plate 30B using structural adhesive J or bolts.
[0030] Furthermore, between the pair of wood-based support members 40B, connecting members 80 are provided at predetermined intervals in the extending direction. It goes without saying that such a configuration provides the same effects as the first embodiment.
[0031] In the first embodiment and its modified examples, the connecting piece 80 is provided between the pair of wood-based support members 40A, 40B, but gap-filling wood may be provided to fill the gap between the pair of wood-based support members 40A, 40B instead of the connecting piece 80. In this case, too, the axial rigidity and shear rigidity of the wood-based support members 40A, 40B can be increased, and the vibration damping performance of the vibration-damping brace structures 10A, 10B can be improved.
[0032] (Second embodiment) FIG. 6 is a cross-sectional view showing a vibration-damping brace structure according to a second embodiment of the present invention. As in the first embodiment, the vibration-damping brace structure 10C of this second embodiment is configured to connect the corners located on the diagonal of a rectangular frame surface formed by two adjacent columns 4A, 4B, an upper beam 3A, and a lower beam 3B. As shown in FIG. 6, a vibration-damping brace structure 10C includes a first connecting steel plate 20C, a second connecting steel plate 30C, a wood-based support material 40C, and a viscoelastic damper 50C. The first connecting steel plate 20C is fixed to the first portion P1 of the frame 2, which is the joint between the upper beam 3A and the column 4A. A pair of first connecting steel plates 20C are provided with a gap in the beam width direction Dt. The pair of first connecting steel plates 20C are provided on both sides in the beam width direction Dt, sandwiching a wood-based support material 40C between them. Each first connecting steel plate 20C is joined, for example, by welding, to the underside of the lower flange 3b of the upper beam 3A and to the side surface of the column 4A. Each first connecting steel plate 20C extends downward in a vertical plane from the lower flange 3b of the upper beam 3A. The second connecting steel plate 30C is fixed to the second portion P2 of the frame 2, which is the joint between the lower beam 3B and the other column 4B adjacent to the column 4A. A pair of second connecting steel plates 30C are provided with a gap in the beam width direction Dt. The pair of second connecting steel plates 30C are provided on both sides in the beam width direction Dt, sandwiching a wood-based support material 40C between them. Each second connecting steel plate 30C is joined, for example, by welding, to the upper surface of the upper flange 3f of the lower beam 3B and to the side surface of the other column 4B. Each second connecting steel plate 30C extends upward in a vertical plane from the upper flange 3f of the lower beam 3B.
[0033] The wooden support material 40C is a long board extending diagonally between the second portion P2 and the first portion P1 of the framework 2. In this embodiment, unlike the first embodiment, one wooden support material 40C is provided. One end 40t of the wood-based support material 40C is connected to the first portion P1 of the framework 2 via a viscoelastic damper 50C and a first connecting steel plate 20C. The viscoelastic damper 50C is interposed between a surface 40h of the wood-based support material 40C facing outward in the beam width direction Dt and a surface 20h of the first connecting steel plate 20C, which is provided opposite the surface 40h. A pair of viscoelastic dampers 50C is provided on both sides of the wood-based support material 40C. As a result, each of the pair of first connecting steel plates 20C is arranged to sandwich the wood-based support material 40C between them, each with a pair of viscoelastic dampers 50C interposed therebetween.
[0034] The viscoelastic damper 50C is integrally formed by laminating a first steel plate 51, a high-damping rubber 53, and a second steel plate 52 in this order. The first steel plate 51 and the second steel plate 52 are arranged parallel to each other and spaced apart from each other. The high-damping rubber 53 is provided between the first steel plate 51 and the second steel plate 52. In this embodiment, the viscoelastic damper 50A is manufactured by providing the first steel plate 51 and the second steel plate 52 spaced apart from each other and vulcanizing the high-damping rubber 53 between them, so that the first steel plate 51, the second steel plate 52, and the high-damping rubber 53 are vulcanization-bonded together and integrated into one body. In particular, in this embodiment, the viscoelastic damper 50C is formed to have a substantially square shape when viewed from the thickness direction, and is used as a unit.
[0035] At the end 40t of the wood-based support material 40C, the first steel plate 51 and the second steel plate 52 of each viscoelastic damper 50C are adhesively bonded to the surfaces 40h, 20h of the wood-based support material 40C and the first connecting steel plate 20C, respectively, via an adhesive layer 50j made of structural adhesive J. The wood-based support material 40C and the viscoelastic damper 50C, and the viscoelastic damper 50C and the first connecting steel plate 20C are each bonded with structural adhesive J. The surface of the first steel plate 51 of each viscoelastic damper 50C abuts against the surface 40h of the wood-based support material 40C and is bonded to the surface 40h of the wood-based support material 40C with a structural adhesive J. The surface of the second steel plate 52 of each viscoelastic damper 50C abuts against the surface 20h of the first connecting steel plate 20C and is bonded to the surface 20h of the first connecting steel plate 20C with a structural adhesive J. The viscoelastic damper 50C and the structural adhesive J may be the same as those described in the first embodiment.
[0036] In each of the pair of second connecting steel plates 30C, the surface 30f facing inward in the beam width direction Dt is in contact with the surface 40h facing both sides in the beam width direction Dt of the wood-based supporting material 40C. The surface 30f of the pair of second connecting steel plates 30C and the surface 40h of the wood-based supporting material 40C are each joined with a structural adhesive J. As a result, the other end 40s of the wood-based supporting material 40C, which is opposite the end 40t where the viscoelastic damper 50C is provided, is fixed to the second portion P2 of the frame 2 via the pair of second connecting steel plates 30C. The wooden support member 40C and the second connecting steel plate 30C may be joined with bolts. However, if bolts are used to join them, stress may be concentrated around the bolted portion of the wooden support member 40C, potentially causing deformation of the wooden support member 40C. Therefore, it is more desirable to join them using structural adhesive J, as in this embodiment.
[0037] In this way, one end 40t of the wood-based support material 40C is connected via the viscoelastic damper 50C to the first connecting steel plate 20C joined to the first part P1 of the frame 2 of the structure 1, and the other end 40s is fixed to the second part P2 of the frame 2, so that the end 40t of the wood-based support material 40C is movable relative to the first connecting steel plate 20C. In this configuration, when the structure 1 equipped with the vibration-damping brace structure 10C shakes due to, for example, an earthquake or strong wind, the upper beam 3A and the lower beam 3B are displaced relative to each other. At this time, the second connecting steel plate 30C and the wood-based support member 40C are displaced integrally with the lower beam 3B, and the first connecting steel plate 20C is displaced integrally with the upper beam 3A. In the viscoelastic damper 50C, the first steel plate 51 and the second steel plate 52 then attempt to displace relative to each other. This relative displacement is damped by the high-damping rubber 53 of the viscoelastic damper 50C, which is provided between the first steel plate 51 and the second steel plate 52, thereby damping the shaking of the structure 1.
[0038] The vibration-damping brace structure 10C described above is a vibration-damping brace structure 10C in which a viscoelastic damper 50C and a wood-based support material 40C are combined, and includes a first connecting steel plate 20C joined to a first portion P1 of a frame 2 of the structure 1, a wood-based support material 40C fixed to a second portion P2 of the frame 2, extending toward the first connecting steel plate 20C, and provided so as to be movable relative to the first connecting steel plate 20C, and a second connecting steel plate 20C interposed between the surfaces 20h, 40h of the first connecting steel plate 20C and the wood-based support material 40C. and a viscoelastic damper 50C that damps the relative movement between the wood-based support material 40C and the first connecting steel plate 20C. The viscoelastic damper 50C comprises a first steel plate 51 and a second steel plate 52 spaced apart from each other, and high-damping rubber 53 provided between the first steel plate 51 and the second steel plate 52. The first steel plate 51 and the second steel plate 52 are each vulcanization-bonded to the high-damping rubber 53, and the first steel plate 51 and the second steel plate 52 are adhesively bonded to the surfaces 40h, 20h of the wood-based support material 40C and the first connecting steel plate 20C via adhesive layers 50j, respectively. With this configuration, the viscoelastic damper 50C is provided such that the first steel plate 51 of the viscoelastic damper 50C is bonded to the surface 40h of the wood-based support material 40C, and the second steel plate 52 is bonded to the first connecting steel plate 20C. Because the viscoelastic damper 50C is bonded to the surface 40h of the wood-based support material 40C, the bonded surface between the viscoelastic damper 50C and the wood-based support material 40C is flat, while the bonded area is increased, allowing the stress acting from the first connecting steel plate 20C to the wood-based support material 40C to be dispersed over a wide area. This prevents the first steel plate 51 from sinking into the wood-based support material 40C. Furthermore, if steel fasteners such as bolts or nails are used to join any component to the wood-based support material 40C, stress may concentrate around the bolts or nails on the wood-based support material 40C, causing the component to sink into the wood-based support material 40C. In contrast, with the above-described configuration, the first steel plate 51 of the viscoelastic damper 50C and the wood-based support material 40C are adhesively joined via the adhesive layer 50j. This reduces the sinking of the first steel plate 51 into the wood-based support material 40C compared to when the first steel plate 51 is joined to the wood-based support material 40C using steel fasteners such as bolts or nails. In this way, the first steel plate 51 joined to the wood-based support material 40C is prevented from sinking into the wood-based support material 40C, allowing the performance of the viscoelastic damper 50C to be effectively demonstrated and vibrations to be effectively reduced. Furthermore, the first steel plate 51 and the second steel plate 52 of the viscoelastic damper 50C are adhesively bonded to the surfaces of the wood-based support material 40C and the first connecting steel plate 20C via adhesive layers 50j, respectively. This eliminates the need to use bolts to attach the viscoelastic damper 50C. This eliminates the need to provide joint margins in the first steel plate 51 and the second steel plate 52 for fastening the bolts, simplifying the connection of the joints. In this way, it is possible to provide a vibration-damping brace structure 10C that uses wood-based components to give the structure the texture of wood, while effectively reducing vibrations with a simple structure.
[0039] In addition, there are pairs of first connecting steel plates 20C and viscoelastic dampers 50C, and each of the pair of first connecting steel plates 20C is arranged to sandwich a wood-based support material 40C through each of the pair of viscoelastic dampers 50C. The first connecting steel plate 20C and the viscoelastic damper 50C, and the viscoelastic damper 50C and the wood-based support material 40C are each joined with structural adhesive J, and the structure further includes a second connecting steel plate 30C joined to the second part P2, and the surface 40h of the wood-based support material 40C is fixed to the second connecting steel plate 30C using structural adhesive J or bolts. With this configuration, the viscoelastic damper 50C and the first connecting steel plate 20C are provided on both sides of the wood-based support material 40C. By providing multiple viscoelastic dampers 50C in this way, the vibration damping performance of the vibration-damping brace structure 10C can be improved. Furthermore, where the wood-based support material 40C is fixed to the second portion P2 of the frame 2, the wood-based support material 40C is firmly joined to the second connecting steel plate 30C joined to the second portion P2 using structural adhesive J or bolts. By firmly fixing the wood-based support material 40C to the second portion P2 of the frame 2 in this way, displacement between the first and second portions of the frame due to vibrations caused by earthquakes or the like acts concentratedly on the viscoelastic damper 50C arranged between the wood-based support material 40C and the first connecting steel plate 20C joined to the first portion P1. This allows the vibration damping performance of the viscoelastic damper 50C to be more effectively exerted.
[0040] (Modification of the second embodiment) The vibration-damping brace structure of the present invention is not limited to the second embodiment described above with reference to the drawings, and various modifications are possible within the technical scope. FIG. 7 shows a cross-sectional view of a vibration-damping brace structure according to a modified example of the second embodiment of the present invention. This modified example has a configuration in which the second embodiment is reversed vertically. As in the first and second embodiments, the vibration-damping brace structure 10D of this modified example is provided so as to connect corners located on diagonal lines of a rectangular frame surface formed by two adjacent columns 4A, 4B, an upper beam 3A, and a lower beam 3B. The vibration-damping brace structure 10D includes a first connecting steel plate 20D, a second connecting steel plate 30D, a wood-based support material 40D, and a viscoelastic damper 50D. The first connecting steel plate 20D is fixed to the first portion P11 of the frame 2, which is the joint between the lower beam 3B and the column 4B. A pair of first connecting steel plates 20D are provided with a gap in the beam width direction Dt. The pair of first connecting steel plates 20D are provided on both sides in the beam width direction Dt, sandwiching a wood-based support member 40D between them. Each first connecting steel plate 20D is joined, for example, by welding, to the upper surface of the upper flange 3f of the lower beam 3B and to the side surface of the column 4B. Each first connecting steel plate 20D extends upward in a vertical plane from the upper flange 3f of the lower beam 3B. The second connecting steel plate 30D is fixed to the second portion P12 of the frame 2, which is the joint between the upper beam 3A and the other column 4A adjacent to the column 4B. A pair of second connecting steel plates 30D are provided with a gap in the beam width direction Dt. The pair of second connecting steel plates 30D are provided on both sides in the beam width direction Dt, sandwiching a wood-based support material 40D between them. Each second connecting steel plate 30D is joined, for example, by welding, to the underside of the lower flange 3b of the upper beam 3A and to the side surface of the other column 4A. Each second connecting steel plate 30D extends downward in a vertical plane from the lower flange 3b of the upper beam 3A.
[0041] The wooden support material 40D is a long board material that extends obliquely between the second portion P12 and the first portion P11 of the framework 2. The viscoelastic damper 50D is interposed between the surface 40h of the wood-based support material 40D facing outward in the beam width direction Dt and the surface 20h of the first connecting steel plate 20D, which is provided opposite the surface 40h. A pair of viscoelastic dampers 50D is provided on both sides of the wood-based support material 40D. As a result, each of the pair of first connecting steel plates 20D is arranged to sandwich the wood-based support material 40D between them, each of the pair of viscoelastic dampers 50D interposed therebetween.
[0042] At the end 40t of the wood-based support material 40D, the first steel plate 51 and the second steel plate 52 of each viscoelastic damper 50D are adhesively bonded to the surfaces 40h, 20h of the wood-based support material 40D and the first connecting steel plate 20D, respectively, via an adhesive layer 50j made of structural adhesive J. The wood-based support material 40D and the viscoelastic damper 50D, and the viscoelastic damper 50D and the first connecting steel plate 20D are each bonded with the structural adhesive J. The first steel plate 51 of each viscoelastic damper 50D has its surface in contact with the surface 40h of the wood-based support material 40D and is bonded to the surface 40h of the wood-based support material 40D with a structural adhesive J. The second steel plate 52 of each viscoelastic damper 50D has its surface in contact with the surface 20h of the first connecting steel plate 20D and is bonded to the surface 20h of the first connecting steel plate 20D with a structural adhesive J.
[0043] In each of the pair of second connecting steel plates 30D, the surface 30h facing inward in the beam width direction Dt is in contact with the surface 40h facing both sides in the beam width direction Dt of the wood-based support material 40D. The surfaces 30h of the pair of second connecting steel plates 30D and the surfaces 40h of the wood-based support material 40D are each joined with a structural adhesive J. As a result, the other end 40s of the wood-based support material 40D, opposite the end 40t where the viscoelastic damper 50D is provided, is fixed to the second portion P12 of the frame 2 via the pair of second connecting steel plates 30D. The wood-based support material 40D and the second connecting steel plate 30D may be joined with bolts.
[0044] In this way, one end 40t of the wood-based support material 40D is connected via the viscoelastic damper 50D to the first connecting steel plate 20D joined to the first part P11 of the frame 2 of the structure 1, and the other end 40s is fixed to the second part P12 of the frame 2, so that the end 40t of the wood-based support material 40D is movable relative to the first connecting steel plate 20D. In this configuration, when the structure 1 equipped with the vibration-damping brace structure 10D shakes due to, for example, an earthquake or strong wind, the lower beam 3B and the upper beam 3A will displace relative to each other. At this time, the second connecting steel plate 30D and the wood-based support member 40D will displace integrally with the upper beam 3A, and the first connecting steel plate 20D will displace integrally with the lower beam 3B. In the viscoelastic damper 50D, the first steel plate 51 and the second steel plate 52 will then attempt to displace relative to each other. This relative displacement is damped by the high-damping rubber 53 of the viscoelastic damper 50D, which is provided between the first steel plate 51 and the second steel plate 52, thereby suppressing the shaking of the structure 1.
[0045] The vibration-damping brace structure 10D described above is a vibration-damping brace structure 10D in which the viscoelastic damper 50D and the wood-based support material 40D are combined, and includes a first connecting steel plate 20D joined to the first portion P11 of the framework 2 of the structure 1, a wood-based support material 40D fixed to the second portion P12 of the framework 2, extending toward the first connecting steel plate 20D and provided so as to be movable relative to the first connecting steel plate 20D, and a second connecting steel plate 20D interposed between the surfaces 20h, 40h of the first connecting steel plate 20D and the wood-based support material 40D. and a viscoelastic damper 50D that damps the relative movement between the wood-based support material 40D and the first connecting steel plate 20D. The viscoelastic damper 50D comprises a first steel plate 51 and a second steel plate 52 spaced apart from each other, and high-damping rubber 53 provided between the first steel plate 51 and the second steel plate 52, and the first steel plate 51 and the second steel plate 52 are each vulcanization-bonded to the high-damping rubber 53, and the first steel plate 51 and the second steel plate 52 are adhesively bonded to the surfaces 40h, 20h of the wood-based support material 40D and the first connecting steel plate 20D via adhesive layers 50j, respectively.
[0046] In addition, there are pairs of first connecting steel plates 20D and viscoelastic dampers 50D, and each of the pair of first connecting steel plates 20D is arranged to sandwich a wood-based support material 40D through each of the pair of viscoelastic dampers 50D.The first connecting steel plate 20D and the viscoelastic damper 50D, and the viscoelastic damper 50D and the wood-based support material 40D are each joined with structural adhesive J, and the structure further includes a second connecting steel plate 30D joined to the second part P2, and the surface 40h of the wood-based support material 40D is fixed to the second connecting steel plate 30D using structural adhesive J or bolts. It goes without saying that such a configuration provides the same effects as the second embodiment.
[0047] (Other Modifications of the First and Second Embodiments) Furthermore, in each of the above embodiments and their variations, the viscoelastic dampers 50A to 50D are configured to include high-damping rubber 53 between two steel plates, a first steel plate 51 and a second steel plate 52, but may also include three or more steel plates with multiple high-damping rubbers provided between them. In addition, the configurations given in the above embodiments can be selected or changed as appropriate without departing from the spirit of the present invention.
[0048] (Example of consideration) Next, the vibration-damping performance of the vibration-damping brace structures shown in the above embodiments was examined, and the results are shown below. When the vibration-damping brace structure 10A described above was installed on the structure 1, the response during an earthquake was verified by simulation. FIG. 8 is a diagram showing the plan configuration of the building skeleton model used in the simulation study conducted to confirm vibration control performance. Structure 1 is 13 stories tall and has a framework 2 as shown in Figure 8. The floor plan of each floor of framework 2 is 36.0m x 24.8m. The floor height is 5.0m on the first floor and 4.2m on the other floors. The vibration-damping brace structure 10A had a maximum damping force of 75 to 200 tons, and eight units were installed on each floor as shown in Figure 8, for a total of 104 units in the entire frame 2 (8 units x 13 floors). For this model, the maximum response values for seven waves of level 2, consisting of four announced waves and three observed waves, were obtained through simulation. For comparison, a similar simulation was also performed for a case where the vibration-damping brace structure 10A was not provided and a normal earthquake-resistant brace was used. FIG. 9 shows the results of a simulation study conducted to confirm vibration damping performance. As shown in Figure 9, the simulation results confirmed that when the vibration-damping brace structure 10A was installed, the inter-story deformation angle was reduced by up to approximately 30% compared to a structure using conventional earthquake-resistant braces. [Explanation of symbols]
[0049] 1 Structure 50A~50D Viscoelastic damper 2 framework 50j adhesive layer 10A~10D Vibration-damping brace structure 51 First steel plate 20A~20D 1st connection steel plate (connection steel plate) 52 2nd steel plate 20f, 20h Surface 53 High damping rubber 30A~30D Second connecting steel plate (connecting steel plate) 80 Splicing material 30f, 30h Surface J Structural Adhesive 40A~40D Wood-based support material P1, P11 First part 40f, 40h Surface P2, P12 Second part
Claims
1. A vibration-damping brace structure that combines a viscoelastic damper and a wood-based support material, a first connecting steel plate joined to a first portion of the framework of the structure; the wood-based support material being fixed to a second portion of the framework, extending toward the first connecting steel plate, and being movable relative to the first connecting steel plate; a viscoelastic damper adhesively bonded to the first connecting steel plate and the wood-based support material; A vibration-damping brace structure comprising:
2. The wood-based support material and the viscoelastic damper are provided in pairs, The pair of wood-based support members are provided so as to sandwich the first connecting steel plate via the pair of viscoelastic dampers. The vibration-damping brace structure according to claim 1 .
3. a pair of the first connecting steel plates and a pair of the viscoelastic dampers are provided; The pair of first connecting steel plates is provided so as to sandwich the wood-based support material via the pair of viscoelastic dampers, and the first connecting steel plates and the viscoelastic dampers, and the viscoelastic dampers and the wood-based support material are respectively bonded with a structural adhesive. The vibration-damping brace structure according to claim 1 .
Citation Information
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