Prefabricated prestressed concrete filled steel tubular column and construction method

Abstract

The invention belongs to the technical field of building construction, and discloses a prefabricated prestressed concrete filled steel tubular column and a construction method. The prefabricated prestressed concrete filled steel tubular column is mainly composed of steel pipes, an oil separant, positioning frames, concrete, steel formworks, bolts, column top connecting pieces and column foot connecting pieces, wherein the steel formworks are located outside the whole device, the inner wall of the outer steel pipe is coated with the oil separant, and the concrete is poured, so that the steel pipe and the concrete are kept in an isolated state; the column top connecting pieces and the column foot connecting pieces are located on the whole column top and the whole column foot respectively and play a role of a support, and the positioning frames are divided into an upper positioning frame and a lower positioning frame. The prestressed concrete filled steel tubular column manufactured through the construction method of the prefabricated prestressed concrete filled steel tubular column is simple in structure, compressive pre-stress is applied to internal concrete in advance, and therefore, the compressive strength of the concrete is improved, the restraining effect of the steel pipe can be achieved at the initial loading stage, and the stress performance is good.

Description

Technical field [0001] The present invention belongs to the field of building construction, and in particular, the present invention relates to a prefabricated prestressed steel pipe concrete column and construction method. Background technique [0002] At present, the stress resistance of the steel pipe concrete column is good, the concrete is about the cross-cutting of the outer steel pipe, and the pressure strength is increased, and the outer steel pipe is in the support of the internal concrete, it is not easy to malfine. However, the external steel pipe is constrained in the internal concrete. The porks of steel is larger than the Poisson of the concrete, and the steel pipe is unconstrained. When the concrete Poisson is more than steel, concrete The transverse deformation is larger than the lateral deformation of the steel pipe, and the concrete is constrained by the lateral constraint of the steel pipe, the concrete is three-way, and the intensity is improved. However, the ...

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Problems solved by technology

[0004] (1) Ordinary concrete-filled steel tube columns cannot reduce the passive restraint of the outer steel tubes on the inner concrete, making the inner concrete stress uneven

[0005] (2) The traditional ordinary concrete-filled steel tube column consumes a lot of cost, but the effect is not good, and the overall efficiency is low

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