Heavy-load large-span composite beam-column structure and construction method

Abstract

The invention relates to a heavy-load large-span composite beam-column structure and a construction method. The structure comprises a stand column, a cantilever beam, an end plate and a large-span composite beam, wherein the stand column is a steel column or a steel-reinforced concrete column; the cantilever beam is made of H-shaped steel, one end of the cantilever beam is welded to the stand column, and a notch is formed in the upper side of the other end of the cantilever beam; the end plate is vertically arranged in the notch and is connected with a web and an upper flange of the H-shaped steel in a welded mode; and the large-span composite beam is connected with the cantilever beam in a bolted and welded combined mode and is composed of a circular steel pipe and T-shaped steel, the circular steel pipe is arranged above a web of the T-shaped steel and is welded to the web, the end face of the circular steel pipe is connected with the outer surface of the end plate in a welded mode, and the web and a lower flange of the T-shaped steel are connected with the web and the lower flange of the H-shaped steel through connecting plates and high-strength bolts. The large-span composite beam-column structure is particularly suitable for bearing roof heavy loads, and is high in rigidity, clear in load force transmission, low in mid-span deflection, high in bearing capacity and good in integrity. The structure is simple, the height and width of the section are small, and materials are saved.

Description

technical field [0001] The invention relates to the field of building beam-column structures, in particular to a heavy-load large-span composite beam-column structure and a construction method. Background technique [0002] In recent years, with the improvement of living standards and the continuous development of economic level, some buildings with concentrated personnel and materials have higher and higher requirements for internal space, and more and more long-span structures are used. Large-span structures are mostly used in theaters, gymnasiums, exhibition halls, great halls, airport waiting halls and other large public buildings in civil buildings, large-span workshops, aircraft assembly workshops and large warehouses in industrial buildings. In these long-span buildings, a main beam with sufficient strength is required, and composite steel beams are widely used in them. [0003] The so-called combination must be formed by two or more materials, and the materials in t...

AI Technical Summary

Problems solved by technology

[0004] The composite beams in the prior art mainly resist compression through the upper flange of the concrete and steel beam, which requires the concrete to have sufficient height and width, and the upper flange of the steel beam cannot support the concrete slab well, and the concrete The slab will have a long overhang, poor torsional stiffness and not conducive to the transmission of vertical loads

Concrete and steel beams are mainly connected by shear connectors. Concrete and flange plates are prone to slip, and the integrity is poor, which is not conducive to the joint action of concrete slabs and steel beams

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