Double-perforated steel plate-concrete combined coupling beam

Abstract

The invention discloses a double-perforated steel plate-concrete combined coupling beam comprising a concrete beam, and a reinforcement framework arranged in the concrete beam and formed by longitudinal reinforcements, waist reinforcements and stirrups horizontally wound around the longitudinal reinforcements and the waist reinforcements, a reinforced concrete coupling beam is formed by the concrete beam and the reinforcement framework, a section steel framework including the double perforated steel plates are arranged in the reinforced concrete coupling beam, and a combined coupling beam is formed by the reinforced concrete coupling beam and the section steel framework; and the section steel framework is composed of a pair of perforated steel plates distributed symmetrically, a binding bar connecting the pair of perforated steel plates and shear-resistant studs vertically and uniformly distributed on the pair of perforated steel plates, and the pair of perforated steel plates is provided with holes respectively. According to the double-perforated steel plate-concrete combined coupling beam, the resistance moment is jointly resisted by the reinforced concrete and the perforated steel plates, the good bearing capacity and the plastic deformation capacity of the steel plates are utilized for resisting shearing, and an energy dissipation mechanism is achieved by the holes so that the bonding of the steel and the concrete is strengthened; and therefore, the shear capacity and the ductility and energy dissipation capacity of the coupling beam are obviously improved, and consequently the seismic performance of the coupling beam is greatly improved.

Description

technical field [0001] The invention relates to a steel and concrete composite structure and a composite connecting beam of a mixed structure, in particular to a steel-concrete composite connecting beam, that is, a double steel plate-concrete composite connecting beam with openings. Background technique [0002] Coupling beams are the key components in the shear wall or core tube structural system of high-rise buildings. They have always been the key components studied by civil engineering scholars at home and abroad. At present, a lot of research work has been done on reinforced concrete coupling beams. By improving the reinforcement form and material composition of coupling beams, improving the shear bearing capacity of components and improving the ductility of coupling beams has become one of the main directions of coupling beam research. In recent years, the vast majority of structures in my country still use reinforced concrete coupling beams, but studies have shown tha...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a new cross-section steel-concrete composite coupling beam, that is, open-hole double steel plate-concrete composite coupling beam, which overcomes the disadvantages of poor ductility and energy dissipation capacity of traditional reinforced concrete coupling beams, thereby greatly Improving the Seismic Performance of Coupling Beams

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