Steel-Rubber Concrete Fastener Composite Box Girder

Abstract

The invention discloses a steel-rubber concrete fastener type combined box beam. The steel-rubber concrete fastener type combined box beam comprises a top plate and a bottom plate arranged below the top plate, wherein profile steel webs are arranged at two ends between the top plate and the bottom plate, and the top plate is prepared from a rubber concrete material; fastener type connecting pieces facilitating horizontal connection are arranged at two ends of the top plate, the profile steel webs and the top plate are connected through bolts, round steel pipe rubber-concrete beams are arranged at the bottom of the bottom plate, and storage devices are arranged at the bottoms of the round steel pipe rubber-concrete beams; curved surfaces matched with the bottoms of the round steel pipe rubber-concrete beams are formed in the bottom of the bottom plate and upper ends of the storage devices, and lower ends of the storage devices are planes. According to the steel-rubber concrete fastener type combined box beam, two ends of the top plate are connected through fasteners, and fabricated construction is facilitated; the profile steel webs and the top plate of the box beam are connected through the bolts, and the fabrication is convenient; steel pipes at the bottom are filled with rubber concrete, so that resistance to bending and ductility of the box beam are improved, and by means of the storage devices at the bottom of the round steel pipes, mounting and positioning of the box beam are greatly facilitated.

Description

technical field [0001] The invention relates to a steel-rubber concrete fastener type composite box girder, which belongs to the field of steel-concrete composite structures. Background technique [0002] Concrete is a material that is weak in tension but strong in compression. From the principle of concrete hoops, it can be known that when the lateral displacement of concrete is restrained, its compressive capacity will be improved. The steel-concrete composite member is made by filling the thin-walled steel plate with concrete material. When it is under pressure, because the steel plate acts as a hoop for the surrounding concrete, the compressive capacity of the concrete is greatly improved. At the same time, because the thin-walled steel plate is filled with concrete materials, the local stability of the thin-walled steel plate has been improved. In this way, the two materials can make up for each other's shortcomings and give full play to each other's strengths. It is a...

AI Technical Summary

Problems solved by technology

[0004] The connection between the existing composite box girders is cumbersome, and the connection construction is inconvenient. The bottom steel pipe is not filled with concrete, and the crack resistance, bending resistance and impact performance are poor.

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