Rectangular concrete-filled steel tubular column and preparation method

Abstract

The invention relates to a rectangular concrete-filled steel tubular column. The rectangular concrete-filled steel tubular column comprises a first long-side steel plate, a second long-side steel plate, a first short-side steel plate and a second short-side steel plate, wherein the first long-side steel plate is parallel to the second long-side steel plate; the first short-side steel plate is parallel to the second short-side steel plate; the width-thickness ratios of the first long-side steel plate, the second long-side steel plate, the first short-side steel plate and the second short-side steel plate are equal respectively; the first long-side steel plate, the first short-side steel plate, the second long-side steel plate and the second short-side steel plate are sequentially connectedend to form a closed-loop rectangular steel tube; and the rectangular steel tube is filled with concrete. When the rectangular concrete-filled steel tubular column is pressed, the first long-side steel plate, the second long-side steel plate, the first short-side steel plate and the second short-side steel plate can be bent simultaneously, so that the utilization rate of materials is increased, the bearing capacity and the ductility are enhanced, and the seismic performance of a component is improved. The invention further relates to a preparation method of the rectangular concrete-filled steel tubular column.

Description

technical field [0001] The invention relates to the field of building structures, in particular to a rectangular steel pipe concrete column and a preparation method. Background technique [0002] In the field of civil engineering, concrete filled steel tube structure is a common form of steel-concrete composite structure, which is made by filling concrete into steel tubes. [0003] During the stress process of the concrete-filled steel tube column, the steel tube forms a rigid constraint on the core concrete. Both the steel tube and the concrete are in a three-dimensional stress state. brittle failure. [0004] In real life, due to reasons such as building space layout, people usually use rectangular steel tube concrete columns in some narrow and long areas. The rectangular steel tube includes two parallel long-side steel plates and two parallel short-side steel plates. The side steel plate and the short side steel plate are connected end to end in turn to form a closed lo...

AI Technical Summary

Problems solved by technology

[0006] When a rectangular concrete-filled steel tube column is subjected to axial compression, the steel plate on the long side usually buckles first, while the steel plate on the short side has not yet buckled, resulting in low material utilization, relatively poor bearing capacity and ductility, and poor seismic performance of the component. good

Images