Self-reset coupling beam based on super-elasticity shape memory alloy

Abstract

A self-reset coupling beam based on a super-elasticity shape memory alloy is mounted between two wall columns. The self-reset coupling beam comprises two reinforced concrete coupling beam sections (2)and a self-reset coupling beam section (1) connecting the two reinforced concrete coupling beam sections (2); the two reinforced concrete coupling beam sections (2) are correspondingly poured or fabricated on the two wall columns in a prefabricated mode; the self-reset coupling beam section (1) is made of the super-elasticity shape memory alloy; and the yield bearing capacity of the reinforced concrete coupling beam sections (2) is greater than that of the self-reset coupling beam section (1). The self-reset coupling beam can play the role of consuming energy in the earthquake action, and hasno or little residual deformation after an earthquake, and the structural self-reset effect is achieved. The self-reset coupling beam is simple in structure, flexible in design, high in practicability and convenient to construct, the cost for repairing or strengthening the structure can be effectively reduced through the self-reset ability of the self-reset coupling beam, the recoverable abilityof the structure after the earthquake can be effectively and rapidly improved, and the self-reset coupling beam has broad application prospects in the field of building structures.

Description

technical field [0001] The invention relates to the field of anti-seismic equipment, in particular to a self-resetting connecting beam based on a superelastic shape memory alloy. Background technique [0002] In current practical engineering, reinforced concrete shear walls are one of the main lateral force-resisting systems of high-rise and super high-rise structures. It is recognized that the yield mechanism of a reasonable shear wall structure system is that under the action of earthquakes, the coupling beams yield a large amount and bear the main energy consumption, while the yield of the wall piers should be delayed as much as possible, and most of them should be controlled at the bottom of the structure. As the first anti-seismic defense line in the shear wall structure system, the coupling beam plays an important role in the anti-seismic fortification. [0003] Usually, measures to improve the seismic performance of reinforced concrete coupling beams mainly include t...

AI Technical Summary

Problems solved by technology

Researchers have proposed a self-resetting connecting beam, which uses prestressed tendons to provide restoring force, and additional angle steel or friction devices to provide energy dissipation capacity, but the structure of this combined self-resetting connecting beam is relatively complicated

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