A staged yield type mild steel damper and its construction method

Abstract

A staged yield type mild steel damper and a construction method thereof, comprising a connection base and an energy dissipation member, the connection base includes two bases, the energy dissipation member is located between the two bases, and the energy dissipation member includes a first yielding member and the second yielding member, the first yielding member is divided into two parts, which are located on both longitudinal sides of the body and are symmetrically arranged, each part includes a first yielding unit group, and each row of the first yielding unit group includes a group of first yielding units , the second yielding piece is centrally arranged in the center of the body, and the second yielding piece includes a second yielding unit group. In the present invention, the curved steel sheet and its locator form a curved mild steel damper through the structure. Under a small shock, the curved steel sheet in the first yield section enters into work, yielding energy consumption, and the sheared steel sheet in the second yield section does not enter the working state, and does not enter the working state. Affecting the energy dissipation of the first yield section, under moderate or large earthquakes, the stiffness and energy dissipation capacity of the second yield section are much larger than those of the first yield section, which greatly improves the application range of metal dampers.

Description

technical field [0001] The invention belongs to the field of structural earthquake resistance, in particular to an energy dissipation and shock absorption structure and a construction method thereof. Background technique [0002] Seismic action has always been a major challenge for structural engineers due to its sudden and random nature. The energy dissipation and shock absorption structure system changes the damping, stiffness or strength of the structure by installing the energy dissipation shock absorber, and absorbs or dissipates the energy input by the earthquake through the energy dissipation shock absorber, thereby reducing the seismic response of the structure and reducing the key components of the main structure. It has been widely used in engineering seismic design. Common energy-consuming shock absorption devices mainly include metal dampers, friction dampers, viscoelastic dampers and viscous fluid dampers. Among them, metal dampers have clear force, simple stru...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a staged yield type mild steel damper and its construction method to solve the problem that the first yield section of the existing staged yield mild steel damper is affected by the second yield section in parallel under the action of a small earthquake, The technical problem that it is impossible to better realize the staged yield

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