Steel-recycled concrete composite beam component with composite structure

Abstract

The invention provides a steel-recycled concrete composite beam component with a composite structure. The steel-recycled concrete composite beam component is mainly applied to residential buildings, public places and other civil buildings; a tensile steel plate of the component is positioned on the upper surface of concrete in a hogging moment area; the lower surface of the steel plate is a rough surface, and pouring holes are formed to ensure that the concrete is poured compactly; stud connecting pieces and channel steel connecting pieces are welded on the upper surface of a steel beam and reliably welded with the bottoms of profiled steel plates; the upper parts of tie bolts are bolted with the tensile steel plate, and the lower parts are bolted with the convex parts of the corresponding profiled steel plates; and the recycled concrete is densely filled between the profiled steel plates and the tensile steel plate, and is concrete which is completely or partially made of recycled coarse aggregate, recycled fine aggregate, recycled micro powder or doped with other waste materials. By arranging the composite structure in the composite beam, the bending resistance of the hogging moment area can be greatly improved, the problem that the width of a hogging moment crack of recycled concrete is too large is solved, the connection degree of all parts is remarkably increased, and the material performance of the concrete is fully played.

Description

technical field

[0001] The invention relates to a steel-regenerated concrete composite beam component with a composite structure, belonging to the technical field of composite beam components. Background technique

[0002] In recent years, the exploitation of global sand and gravel resources has exceeded its natural recovery capacity, and concrete sand and gravel account for a large proportion. At the same time, the output of waste concrete in my country is huge, but the utilization rate is less than 5%, and the disposal methods are still piled up and landfilled. . Crushing and screening waste concrete to make recycled coarse aggregate, recycled fine aggregate and recycled micropowder, and replacing natural sand and gravel to prepare recycled concrete is an effective means to solve the above environmental problems. However, due to the decrease in the mechanical properties of recycled concrete and the increase in shrinkage and creep, when recycled concrete is applied to compo...

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