Hollow type combination beam for quick construction and construction method

Abstract

The invention discloses a hollow type combination beam for quick construction, and a construction method. The hollow type combination beam for quick construction comprises a beam structure unit including a concrete made beam body, a neutral shaft positioned at side of the beam body, a closed profiling steel plate prefabricated along the neutral shaft and sidewall of the beam body, welding nails pre-embedded at two sides of the beam body on upper part of the neutral shaft, a steel web welded and fixed to the closed profiling steel plate via welding nails and angle irons, and a steel plate welded and fixed with the steel web and forming a cavity. The combination beam for quick construction has an inside hollow cavity and has advantages of materials conservation, low cost, and light self-weight. In a further embodiment, the combination beam can be casted with a combined board, a concrete column as a whole and the combination beam has advantages of good integration, free of template, quick and convenient construction, and reliable connection with steel beams and concrete columns.

Description

technical field [0001] The invention relates to building components, in particular to a composite beam. Background technique [0002] Steel-concrete composite beam members can make full use of the good compressive properties of concrete and the good tensile properties of steel to improve the bearing capacity and ductility of the structure. At present, there are two commonly used steel-concrete composite beams: steel-concrete slab composite Beams and steel-concrete filled beams. Contents of the invention [0003] After research, the applicant found that: from the perspective of stress and material use, the two composite beams have the following defects: the steel upper flange of the steel-concrete slab composite beam generally bears compressive stress, and it acts as a bridge in the compression zone. Concrete slabs have the same function, this part of the flange is not necessary, resulting in a waste of steel; the concrete of the steel-concrete filled beam bears tensile st...

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Problems solved by technology

[0003] After research, the applicant found that: from the perspective of stress and material use, the two composite beams have the following defects: the steel upper flange of the steel-concrete slab composite beam generally bears compressive stress, and it acts as a bridge in the compression zone. Concrete slabs have the same function, this part of the flange is not necessary, resulting in a waste of steel; the concrete of the steel-concrete filled beam bears tensile stress in the lower part, because the tensile strength of concrete is very low, this part is under load. Concrete, because it cannot bear the load, becomes an unnecessary load on the structure instead, which not only wastes materials, but also affects the overall performance of the structure

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