A self-resetting steel plate shear wall based on a superelastic shape memory alloy screw

Abstract

The invention relates to a self-resetting steel plate shear wall based on a hyperelastic shape memory alloy screw, and the shear wall comprises a boundary beam, boundary columns, an embedded steel plate, a shear-resistant element, and a foundation beam. The foundation beam is disposed at a lowermost part, and the number of boundary columns is two, wherein the two boundary columns are arranged to be parallel. The boundary columns and the foundation beam are connected through the hyperelastic shape memory alloy screw arranged at the lowermost part. The boundary beam is connected with the upper ends of the two boundary columns, and the embedded steel plate is disposed between the two boundary columns. The shear-resistant element is disposed between the bottom of the embedded steel plate and the foundation beam. According to the invention, the hyperelastic shape memory alloy screw plays a role in consuming energy and providing a self-resetting effect, and also achieves the self-resetting effect. Compared with the prior art, the shear wall is simple in structure, is flexible in design, and is convenient to construct. The self-resetting capability can effectively reduce the cost of post-earthquake repair or reinforcement of the structure, and improves the recovery capability of post-earthquake use of the overall structure.

Description

technical field [0001] The invention belongs to the technical field of building structures, in particular to the technical field of recoverable functional structures, in particular to a self-resetting steel plate shear wall based on a superelastic shape memory alloy screw. Background technique [0002] Steel plate shear wall is a new type of structural lateral force resistance system developed in the 1970s. It is currently mainly used in multi-story buildings in Japan, the United States, Canada, Mexico and China. Steel plate shear walls are mainly composed of embedded steel plates, vertical boundary columns and horizontal boundary beams. The traditional unstiffened steel plate shear wall mainly uses the buckling characteristics of the steel plate to form a tensile field to provide lateral bearing capacity under earthquake action, and undertakes the main energy dissipation function. Properly designed boundary columns and beams will result in a uniformly yielding mechanism wi...

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Problems solved by technology

[0003] Although the steel plate shear wall can achieve the purpose of energy dissipation and increase the structural ductility through the plastic deformation of its own different components during the earthquake, and realize the expected anti-seismic fortification goal of the structure, but its own damage is serious

Under the action of strong earthquakes, it will not only make it difficult to repair itself, but also have large residual deformation in the structure after the earthquake. It is difficult to strengthen and repair the overall structure, the economic cost and time cost of repair are high, and it is difficult to quickly restore the structural function. recover

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