Assembly type self-reset annular metal damper

Abstract

The invention discloses an assembly type self-reset annular metal damper comprising a steel plate combined member, a piston member, a box-shaped member, a bottom plate, a fastening piece, an elastic piece and energy dissipation members; the steel plate combined member comprises a flange plate and a web plate; a plurality of energy dissipation members are arranged, and the energy dissipation member comprises an annular inner plate, an annular outer plate, connecting base plates and connecting pieces; the annular inner plate is arranged in the annular outer plate in a sleeved mode; a plurality of connecting base plates are clamped between the side plates on the two sides of the annular inner plate and the annular outer plate respectively; a plurality of connecting pieces penetrate through the side plates of the annular inner plate, the connecting base plates and the side plates of the annular outer plate and are respectively fixedly connected with the side plates of the piston member and the box-shaped member; and the designed yield displacement of the annular inner plate is smaller than the designed yield displacement of the annular outer plate. The damper provided by the invention has the function of staged yield energy dissipation, and the energy dissipation is good; and meanwhile, the members of the damper can be disassembled and replaced timely after fatigue damage to the members happens, and the self-reset capability is high.

Description

technical field [0001] The invention relates to the technical field of energy dissipation and shock absorption, in particular to an assembled self-resetting annular metal damper. Background technique [0002] In recent years, many relatively large earthquakes have occurred at home and abroad, causing great casualties and property losses. Earthquake disasters have become one of the most serious natural disasters faced by human beings. The traditional anti-seismic method mainly relies on the deformation and energy consumption of the building itself to resist the earthquake force. This anti-seismic method will cause irreparable damage to the building. For decades, after continuous research by domestic and foreign scholars, it is proposed to add a damper to the building, and use the energy-dissipating element of the damper to absorb the energy input by the earthquake to protect the main load-bearing components of the building, that is, passive energy dissipation and shock absorp...

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Problems solved by technology

[0004] However, there are still many defects in the design and performance of the ring-shaped metal damper used for energy dissipation and shock absorption. Among them, one of the more common defects is: the damper produces yield deformation during the energy dissipation process. After the energy dissipation, due to Lack of self-resetting ability or self-resetting ability is too small, and the energy-dissipating elements still have large yield deformation. At this time, the residual deformation of the energy-dissipating elements will bring negative effects that are difficult to repair on the stress and use functions of the building structure

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