Hollow corrugated pipe interlayer concrete-filled steel tubular column

Abstract

The invention relates to a hollow corrugated pipe interlayer concrete-filled steel tubular column, and belongs to the field of industrial buildings, high-rise buildings, large-span buildings and bridge engineering. An inner steel pipe of the hollow corrugated pipe interlayer concrete-filled steel tubular column is arranged in a pipe body of an outer steel pipe, and the outer steel pipe and the inner steel pipe are coaxially arranged; a pipe cavity between the outer steel pipe and the inner steel pipe is filled with self-compacting concrete; and the inner steel pipe is a hollow corrugated pipe body. The hollow corrugated pipe interlayer concrete-filled steel tubular column has the advantages of being high in bearing capacity, good in ductility, high in buckling resistance, capable of enhancing the core concrete constraint effect, good in durability, high in factory prefabrication degree, capable of achieving standardized production and the like.

Description

technical field [0001] The invention relates to a hollow corrugated pipe interlayer concrete-filled steel pipe column, which belongs to the fields of industrial buildings, high-rise buildings, long-span buildings and bridge engineering. Background technique [0002] The hollow interlayer concrete-filled steel tube column is a new type of structural column developed on the basis of the traditional steel tube concrete column. It is a composite member formed by placing two concentric steel tubes and pouring concrete between them. Compared with traditional concrete-filled steel tube concrete columns, hollow corrugated tube sandwich concrete-filled steel tube columns have the advantages of light weight, high bearing capacity, good plasticity, good fire resistance, and convenient fabrication and installation, and have broad application prospects in high-rise or super high-rise and industrial buildings . At present, hollow concrete-filled steel tube columns mainly have several s...

AI Technical Summary

Problems solved by technology

At present, hollow concrete-filled steel tube columns mainly have several structural forms such as circle-covered circle, square-covered square, and square-covered circle. The wall of the steel pipe is thin, and it is very easy to have inward buckling prematurely, which will lead to a decrease in the circumferential restraint of the concrete, and cause a weakening of the ductility and bearing capacity of the member. Now try to improve this performance by setting stiffeners and other measures , but its construction process is too cumbersome and has little effect

Therefore, the above problems greatly restrict the application and development of hollow concrete filled steel tube columns in civil engineering.

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