Concrete filled steel tube combination column

Abstract

The invention relates to the technical field of building structures, and discloses a concrete filled steel tube combination column. The column comprises a steel-encased tube, a connecting steel plate is fixedly connected to the inner side of the steel-encased tube, a concrete structure body is arranged at the position, located at the side of the connecting steel plate, in the steel-encased tube, and a steel bar structural part is arranged in the concrete structure body. According to the concrete filled steel tube combination column, the connecting strength of the steel tube and the concrete is enhanced through the connecting steel plate, the steel tube and the concrete are prevented from being separated after the concrete is solidified, the connecting steel plate provides supporting force for the steel tube, surface deformation of the steel tube is avoided, and the deformation resistance of a steel bar structural part is improved through tie bars, so that the strength of the concrete filled steel tube combination column is greatly improved. The outer surface of the steel tube is protected through a protective coating, the steel tube is prevented from being corroded and damaged, meanwhile, impact force borne by the combination column can be well dissipated through energy dissipation particles, and therefore the good anti-seismic performance is achieved, and the stability of the concrete filled steel tube combination column is guaranteed.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a steel pipe concrete composite column. Background technique [0002] With the development of the national economy and the advancement of the construction industry, there are more and more high-rise buildings, large-area buildings, and bridges in cities. At present, concrete columns are the most basic load-bearing components in engineering structures in construction. Steel tube concrete Composite column refers to the component formed by filling concrete in the steel pipe. Compared with the traditional reinforced concrete column, it is not only much simpler to construct, but also has a smaller volume, which increases the effective use of underground space. Therefore, it is the most suitable in the subway ring line project. It was first used, and then, in industrial plants, blast furnaces, boiler frames, and power substation and transmission towers, CFST has been populari...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a concrete-filled steel pipe composite column to solve the problem that the connection strength between the steel pipe and the concrete is low during construction of the existing concrete-filled steel pipe composite column proposed in the above-mentioned background technology, and after the concrete is solidified, its The shrinkage of the volume will easily cause the inner surface of the steel pipe to be separated from the concrete, resulting in the formation of a cavity inside the steel pipe, which is easy to deform and greatly reduces the structural strength of the steel pipe concrete composite column. The problem of resistance to bending

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