Self-resetting swinging wall assembly based on shape memory alloy bar

Abstract

The invention provides a self-resetting swinging wall assembly based on a shape memory alloy bar. The self-resetting swinging wall assembly is mounted between the bottom of a swinging wall and a foundation beam and comprises a V-shaped supporting seat and a memory alloy self-resetting device; the memory alloy self-resetting device comprises a shape memory alloy assembly, a hinged supporting seat and a fixed supporting seat, wherein the hinged supporting seat and the fixed supporting seat are arranged at the upper end and the lower end of the shape memory alloy assembly; the shape memory alloyassembly is composed of an alloy bar in the middle, a connecting plate on the top and a limiting stop block at the bottom; and the upper end and the lower end of the alloy bar are correspondingly connected with the connecting plate and the limiting stop block. According to the self-resetting swinging wall assembly based on the shape memory alloy bar, design of a self-resetting swinging wall is realized by utilizing a shape memory alloy damper and a V-shaped support at the bottom, and it can be ensured that a frame-swinging wall structure system can not only give a full play to the swinging performance of a wall body and dissipate earthquake kinetic energy under a strong earthquake, but also the frame-swinging wall structure system has the characteristic of self-resetting after the earthquake, structural earthquake damage and residual deformation are reduced, and quick repairing of the structure and component replacing are facilitated.

Description

technical field [0001] The invention belongs to the technical field of civil engineering structures, in particular to a self-resetting swinging wall assembly based on shape memory alloy rods, which can ensure that the frame-swinging wall structure system can fully exert the swinging performance and dissipation capacity of the wall under strong earthquakes. Earthquake energy, and at the same time have self-resetting characteristics, reduce structural earthquake damage and residual deformation, and facilitate rapid structural repair and component replacement after earthquakes. Background technique [0002] The results of early seismic damage investigations showed that the proper lifting of the foundation can help reduce the seismic action of the superstructure, thus revealing the shock absorption mechanism of the rocking structure. As a form of swing structure, the swing wall can be combined with prestressed tendons or other self-resetting elements to form a self-resetting swi...

AI Technical Summary

Problems solved by technology

[0003] The main implementation forms of swing walls can be divided into two types: self-resetting swing walls based on unbonded prestress and energy-dissipating swing walls based on manifest hinge points. The former has limited swing range and the toe of the wall is prone to collision damage, which is still difficult to overcome. , and the lack of the latter's self-resetting function makes the function of the swinging wall greatly reduced

In addition, the obvious difference between the existing research and the actual engineering is that the current research objects are all swinging walls without openings, but in actual engineering, openings for doors and windows are often required for swinging walls, which will make it difficult to apply the prestressed self-resetting form. The design of the swinging wall also faces challenges

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