A steel and recycled concrete composite beam slab and its assembly method

Abstract

The invention discloses a novel steel and recycled concrete composite beam slab, which comprises two rigid beams, and a concrete rigid slab is connected between the two rigid beams; each rigid beam comprises a box-shaped steel with a rectangular section, and the box-shaped steel is The side plate a is welded on the opposite side of the direction, the two side plates a form a groove with the upper bottom of the box steel, the upper beam is fixedly connected in the groove, and the concrete rigid plate is fixedly connected between the two upper beams; the steel and the concrete beam Combination, giving full play to the mechanical properties of concrete in compression and steel in tension, avoiding the cracking of the lower part of the beam and making it have good ductility; the combination of beam and steel frame in the slab makes the connection between the beam and the concrete rigid slab reliable and achieves common work The purpose; the hollow cold-formed thin-walled box-shaped steel pipe is used in the concrete rigid slab to reduce the self-weight of the overall structure and can be used as a large-span floor structure; the box-shaped steel in the beam is used as a hollow channel, which can be used to set up pipelines.

Description

technical field [0001] The invention belongs to the technical field of building structures, and in particular relates to a steel and recycled concrete composite beam slab, and also relates to an assembly method for a steel and recycled concrete composite beam slab. Background technique [0002] The composite structure of steel and concrete has developed rapidly in China in recent years, and its structural forms are various, which are widely used in various projects. However, there are also many problems in the structure. When traditional concrete beams and steel-steel concrete beams are damaged, most of them show cracks in the lower part of the beams, resulting in a reduction in the bearing capacity of the components; traditional steel beams are unstable to varying degrees due to insufficient rigidity and excessive loads; in addition, the beams and floors are separated. , resulting in unreliable connection, and the designed beam section size is large; the solid concrete flo...

AI Technical Summary

Problems solved by technology

When traditional concrete beams and steel-steel concrete beams are damaged, most of them show cracks in the lower part of the beams, resulting in a reduction in the bearing capacity of the components; traditional steel beams are unstable to varying degrees due to insufficient rigidity and excessive loads; in addition, the beams and floors are separated. , resulting in unreliable connection, and the designed beam section size is large; the solid concrete floor is too heavy, and the material is wasteful; the laying of pipelines is a more troublesome problem during the second decoration, etc.

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