Two-stage energy-dissipation arc-shaped steel plate damper provided with replaceable 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 absorption and energy consumption device that can be recycled for use in building nodes, in particular to an arc steel plate damper with replaceable two-stage energy consumption damping plates, which is applied to the field of structural earthquake resistance. [0002] technical background [0003] my country is in an area with a high incidence of earthquakes, and the losses caused by earthquake disasters are very heavy. In the earthquake damage investigation in the past ten years, it has been found that the column ends and joints of the frame building structure are prone to damage during the process of strong earthquakes. That is, during an earthquake, the end of the frame column first yields and plastic hinges appear, causing the structure to collapse. The traditional seismic design method of joints is too passive, mainly relying on increasing the cross-sectional size of the column or increasing the reinforcement of the beam-c...

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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