A curved steel plate damper with replaceable two-stage energy-dissipating damping plate

Abstract

The invention provides a two-stage energy-dissipation arc-shaped steel plate damper provided with a replaceable damping plate. The two-stage energy-dissipation arc-shaped steel plate damper provided with the replaceable damping plate comprises a composite elastic body, an upper column end connector, a lower column end connector and a beam end connector, wherein the upper column end connector and the lower column end connector are arranged at one end of the composite elastic body, and the beam end connector is arranged at the other end of the composite elastic body; the composite elastic body is an arc-shaped device, and the upper column end connector, the lower column end connector and the beam end connector are all made of rectangular steel plates; and beam end fixing bolt mounting holes are formed in the periphery of the steel plate of the beam end connector, and column end fixing bolt mounting holes are arranged on the peripheries of the steel plates of the upper column end connector and the lower column end connector. According to the two-stage energy-dissipation arc-shaped steel plate damper provided with the replaceable damping plate, various energy dissipation forms are achieved; in the first stage, shearing energy-dissipation discs are broken for energy dissipation; in the second stage, after the shearing energy-dissipation discs are destroyed, memory alloy wire rings and memory alloy strips can be stretched or compressed for energy dissipation, so that the damper is prevented from losing the energy dissipation capacity; after an earthquake, the two-stage energy-dissipation arc-shaped steel plate damper can be used repeatedly by replacing the shearing energy-dissipation discs; and the two-stage energy-dissipation arc-shaped steel plate damper can be directly mounted at a beam-column joint, is easy to operate, wide in application range, simple in structure, small in size and low in cost, and does not occupy too much service space.

Description

technical field [0001] The invention provides a shock-absorbing energy-dissipating device that can be recycled and used in building nodes, and in particular relates to a two-stage energy-dissipating damping plate replaceable arc-shaped steel plate damper, which is applied to the field of anti-seismic structures. technical background [0002] Our country is located in an earthquake-prone area, and the losses caused by earthquake disasters are very heavy. In the past ten years of earthquake damage investigation, it has been found that the frame building structure is prone to damage at the column ends and joints during strong earthquakes, that is, during an earthquake, the frame column ends first yield and appear plastic hinges, resulting in the collapse of the structure. The traditional joint seismic design method is too passive, mainly relying on increasing the section size of the column or increasing the reinforcement of the beam-column joint, which is easy to cause waste of...

AI Technical Summary

Problems solved by technology

These all-metal dampers have the advantages of strong damping capacity and good fatigue resistance. However, the previous all-metal dampers mostly relied on shearing lead cores or relying on friction to consume node energy. After a large earthquake, the damper is prone to damage and the damping sheet cannot be replaced. , the damper is for one-time use, and its energy consumption effect is small during the subsequent aftershocks. It is impossible to achieve two-stage energy consumption, and it cannot guarantee that the node position will not be damaged. Moreover, the maintenance cost of replacing the damper after the earthquake is high, and it is easy to cause waste of materials. Not in line with economic, environmental and sustainable building principles

At present, there is no arc-shaped steel plate damper with replaceable two-stage energy-dissipating damping plate at home and abroad.

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