Multistage energy dissipation device for triggering and controlling self-resetting by adjusting cable force and threshold with pulley

Abstract

The invention discloses a multistage energy dissipation device for triggering and controlling self-resetting by adjusting the cable force and threshold with a pulley. The multistage energy dissipationdevice comprises a high-strength metal plate, a special-shaped translation rod, a rotating rod, a metal chain rod, a metal rod, a positioning bracket, the pulley, a high-strength steel wire inhaul cable, a viscoelastic damper, an energy dissipation support, a hinged support seat and the like. When the earthquake action is small, earthquake energy is dissipated through shear deformation of viscoelastic materials in the viscoelastic damper. When the earthquake action is large (medium and large earthquakes), the energy dissipation and shock absorption effects are achieved by the viscoelastic damper first. When the translation amount of the special-shaped translation rod reaches a certain limiting value, the rotating rod is driven to rotate around a rotating support point by the special-shaped translation rod, and displacement amplification is achieved. According to the multistage energy dissipation device, the earthquake energy can be dissipated under the action of earthquakes, the structural earthquake response is reduced, additionally, a building structure can be assisted to achieve self-resetting through the high-strength steel wire inhaul cable under medium and large earthquakes,and the structural post-earthquake residual displacement is reduced.

Description

Technical field[0001]The invention relates to a multi-level energy consuming device that adopts a pulley to adjust the cable force and a threshold trigger to control self-reset. Under the action of a small earthquake or strong wind, a viscoelastic damper is used for energy dissipation and shock absorption, and a pulley is passed under the action of a moderate or large earthquake. Adjusting the cable force of a high-strength steel wire cable to realize self-reset and jointly perform energy dissipation and vibration reduction through viscoelastic dampers and energy dissipation supports, belonging to the field of seismic and vibration reduction technology in the field of civil engineering.Background technique[0002]Under the action of an earthquake, the damage or collapse of the building structure is the most important cause of personal injury and property loss. In order to improve the seismic performance of the building structure and control the response of the building structure under...

AI Technical Summary

Problems solved by technology

Under the action of medium and large earthquakes, the traditional self-resetting method will cause the energy-consuming device to fail to fully exert the hysteretic energy-dissipating capacity and directly return to the initial displacement, making the self-resetting function a negative factor limiting energy consumption, which needs to be improved

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