Stepped viscous-friction damper
A friction damper and viscous technology, which is applied in the direction of building components, earthquake resistance, building types, etc., can solve the problems of low energy dissipation capacity, insufficient energy dissipation capacity of viscous dampers, poor fatigue performance, etc., and achieve energy dissipation capacity High, good frictional energy dissipation effect, and the effect of improving fatigue performance
Active Publication Date: 2021-05-28
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
[0004] Aiming at the technical problems existing in the prior art, the present invention provides a stepwise viscous-friction damper to solve the problem of poor fatigue performance and low energy dissipation capacity of the existing friction damper under small shocks. Technical Problems of Insufficient Energy Dissipation Capability of Viscous Damper Under Large Earthquake
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[0065] as attached Figure 1-13 As shown, this embodiment provides a stepped viscous-friction damper, including a top plate 1, a bottom plate 2, a first end plate 3, a second end plate 4 and a composite damper body; the top plate 1 and the bottom plate 2 are arranged in parallel , the top plate 1 is horizontally spaced above the bottom plate 2; the first end plate 3 and the second end plate 4 are vertically arranged between the top plate 1 and the bottom plate 2 in parallel, and the upper ends of the first end plate 3 and the second end plate 4 are aligned with the The two ends of the top plate 1 are welded and fixed, and the lower ends of the first end plate 3 and the second end plate 4 are respectively welded and fixed with the two ends of the bottom plate 2; the top plate 1, the bottom plate 2, the first end plate 3 and the second end plate 4 are combined to form Rectangular box structure.
[0066] The main body of the composite damper is arranged in a rectangular box, and...
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The invention discloses a stepped viscous-friction damper. The stepped viscous-friction damper comprises a top plate and a bottom plate, wherein a first end plate and a second end plate are vertically arranged between the top plate and the bottom plate at intervals; one end of a first friction assembly is fixedly connected with the first end plate, and the other end of the first friction assembly is embedded with one end of a second friction assembly in a crossed mode and fixedly connected with the second friction assembly through a fastener; the other end of the second friction assembly is fixedly connected with the second end plate; and a viscous assembly is arranged between the first friction assembly and the second friction assembly, one end of the viscous assembly penetrates through the first end plate, and the other end of the viscous assembly penetrates through the second end plate. According to the stepped viscous-friction damper, under a small load, the viscous assembly plays an energy dissipation role, can be reused and plays a role in the whole life cycle of the structure; under a large load, the friction assemblies and the viscous assembly jointly dissipate energy, and the energy dissipation effect of the damper is effectively improved; and under different magnitudes of seismic energy, energy consumption is achieved step by step, the purposes of shock absorption, buffering and energy dissipation are achieved, and the safety of the structure is ensured.
Description
technical field [0001] The invention belongs to the field of anti-seismic and shock-absorbing technology of civil engineering, and in particular relates to a stepwise viscous-friction damper. Background technique [0002] At present, the energy dissipation mechanism of the friction damper in the friction zone is that when the external force between the friction plates does not exceed its sliding friction force, the friction zone can be regarded as a rigid body, and the elastic stiffness of the friction zone is very large; when the external force reaches the sliding friction force When the load is high, the seismic energy is dissipated through the friction and plastic deformation between the friction plates; but for small earthquakes, the fatigue performance of the friction damper is poor, and repeated loads always cause static friction between the friction plates. The loss of the friction plate is also irreversible, so that the energy dissipation capacity of the friction zon...
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IPC IPC(8): E04B1/98E04H9/02
CPCE04B1/98E04H9/021
Inventor 王威林忠良苏三庆王冰洁李鹏洛刘磊
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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