Steel concrete composite beam structure and construction method

Abstract

The invention discloses a steel-concrete composite beam structure and a construction method. The steel-concrete composite beam structure comprises a steel truss and a concrete layer; the steel truss comprises a plurality of longitudinal sectional materials, a plurality of transverse sectional materials, a plurality of vertical sectional materials and a plurality of horizontal sectional materials, the longitudinal sectional materials distributed at intervals are connected through the transverse sectional materials, and the vertical sectional materials are connected into a whole; the concrete layer comprises a concrete body and a profiled steel sheet or a template, and the profiled steel sheet or the template is fixed below the horizontal profile; and the concrete body is poured on the profiled steel sheet or the template to wrap the horizontal section bar. And for a structure with a larger span, the span of the structure is increased by increasing the prestress on the steel truss. The structure is simple, the overall structure is stable, the tension and compression performance of different materials is fully utilized, meanwhile, the self weight of the structure can be reduced through the construction method, the formwork erecting procedure and formworks are omitted, the construction period is shortened, meanwhile, the steel consumption can be reduced, stability and integrity are improved, and later inspection, detection, maintenance and reinforcement are facilitated.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a steel-concrete composite beam structure and a construction method. Background technique [0002] Concrete main girders are mostly used in bridge construction at present, which is prone to disease, self-heavy, and the concrete is easy to crack and cannot continue to provide resistance after cracking. The cracked concrete provides only weight load, which will greatly protect the rust protection of steel bars. Lower, difficult to repair later. And during construction, the cast-in-place construction needs to set up brackets, and the construction is complicated. If the prefabrication method is used, there is a problem of heavy hoisting weight. [0003] Therefore, it is an urgent problem for those skilled in the art to provide a steel-concrete composite beam structure and a construction method with simple and fast construction. Contents of the invention [0004] In vi...

AI Technical Summary

Problems solved by technology

[0002] Concrete girders are mostly used in bridge construction at present, which is prone to disease, self-heavy, and the concrete is easy to crack and cannot continue to provide resistance after cracking. The cracked concrete provides only weight load, which will greatly protect the rust protection of steel bars. Reduced, difficult to repair later

And during the construction, the cast-in-place construction needs to set up supports, and the construction is complicated. If the prefabrication method is used, there will be a problem of heavy hoisting weight

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