Hyperelastic multi-stage friction limit energy dissipator for controlling residual displacement of structural nodes

Abstract

The invention discloses a super-elastic multi-stage friction limit energy dissipator for controlling the residual displacement of structural nodes. , a metal cylinder, and a metal rod. When an earthquake occurs, the tension and compression rods start to reciprocate in the axial direction, causing the zigzag grooves of different depths that were completely engaged to be misaligned, and the zigzag half cylinder begins to squeeze the outer metal rubber cylinder, and the metal The rubber cylinder exerts a force on the zigzag half cylinder, which makes the zigzag groove play a greater role in frictional energy consumption when it is staggered. Different depths of the groove can achieve the purpose of grading energy consumption. Through the embedded parts, the force can be transmitted to the building structure itself, reducing the reciprocal displacement of the structure under the earthquake, reducing the residual displacement of the structure after the earthquake, and achieving the purpose of controlling the residual displacement of the structural nodes.

Description

technical field [0001] The invention relates to a super-elastic multi-level friction limiter for controlling the residual displacement of structural nodes. Under the action of an earthquake, the multi-level friction device and metal rubber are used for energy consumption and shock absorption, and at the same time, the super-elasticity of the metal rubber is used. Significantly reduce the residual displacement of the frame structure nodes after the earthquake. The invention belongs to the field of anti-shock and shock-absorbing technology of civil engineering. Background technique [0002] Building structures will inevitably be damaged and damaged to varying degrees under the action of earthquakes, resulting in a large number of economic losses and casualties. In order to reduce the response of structures under the action of earthquakes and reduce casualties and property losses, a large number of experts and scholars at home and abroad have developed different types of energ...

AI Technical Summary

Problems solved by technology

Even after the normal function of the building structure is restored, the large residual displacement angle will cause the residents to clearly perceive the tilt of the building, causing psychological symptoms of panic and discomfort, which seriously affect the daily life of the residents

[0005] At present, the dampers used to reduce the seismic response of structures cannot fully achieve the purpose of controlling the residual deformation of structures after earthquakes, especially the displacement-related dampers represented by metal dampers

This type of damper dissipates seismic energy through deformation under earthquake action, but it enters a failure state after deformation, and cannot reduce the reciprocal displacement of the building structure under long-term earthquakes, and reduce the residual displacement of the structure after the earthquake

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