Double steel plate concrete composite energy dissipation coupling beam, and construction method

Abstract

The invention relates to a double steel plate concrete composite energy dissipation coupling beam. The coupling beam comprises a first steel plate and a second steel plate which are arranged in parallel, a steel skeleton connected between the two steel plates, and filled concrete poured between the two steel plates; and the two steel plates and the filled concrete form a "sandwich" structure, andthe two ends of the two steel plates extend into shearing wall columns separately. The two ends of the steel plates penetrate through constrained edge members of the shearing wall columns, and angel steel is welded at the ends of the steel plates for reinforcement and anchoring. The invention further relates to a construction method of the coupling beam. According to the coupling beam, by using the composite effect formed by the steel plates and the concrete and the film effect of the steel plates, the problems that the ductility and shear capacity of a reinforced concrete deep coupling beam are low are solved, and the coupling beam is prevented from being sheared and damaged fragilely; and the anti-seismic performance of a coupled shear wall is optimized. The structure and the construction method can be further applied to post-earthquake repair and reinforcement of the coupling beam. The coupling beam provided by the invention is simple in structure, and the construction method is convenient in operation, and facilitates popularization.

Description

technical field [0001] The invention relates to a double-steel plate concrete composite connecting beam with good energy dissipation capacity and ductility performance and a construction method thereof, which can be used in a small-span-height ratio deep connecting beam of a joint shear wall, and belongs to the technical field of civil engineering. Background technique [0002] The application of combined shear walls in high-rise buildings is very common, and it is an effective lateral force-resisting component. In the combined shear wall system, the design of coupling beams is very important, which not only restrains the walls at both ends, but also affects the shear wall. It is also the key seismic energy-dissipating component in the combined shear wall. In the seismic design, it is usually required that the coupling beam yields before the wall pier, a plastic hinge with limited rotation is formed at the beam end to dissipate energy, and there is also enough ductility so t...

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Problems solved by technology

The deformability and energy dissipation capacity of this kind of damage are poor, and it is difficult to meet the expected requirements

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