A heavy-duty long-span composite beam-column structure and its construction method

Abstract

The invention relates to a heavy-duty large-span composite beam-column structure and a construction method. The structure includes: a column, which is a steel column or a steel-reinforced concrete column; Incision; end plate, vertically arranged in the incision, and welded with the web and upper flange of H-shaped steel; long-span composite beam, connected with cantilever beam by bolt welding, composed of round steel pipe and T-shaped steel, round steel pipe Arranged above the web of the T-shaped steel and welded with the web, the end face of the round steel pipe is welded to the outer surface of the end plate, the web and lower flange of the T-shaped steel are connected with the web and lower flange of the H-shaped steel by connecting plates and high-strength bolts connect. The long-span composite beam-column structure provided by the present invention is especially suitable for bearing heavy loads on the roof, and has high rigidity, clear load transmission, low mid-span deflection, high bearing capacity and good integrity. The structure is simple, the height and width of the section are small, and the material is 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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