Check valve for jacking construction of concrete-filled steel tubular column and using method of check valve

Abstract

The invention relates to the technical field of civil engineering construction, and particularly discloses a concrete filled steel tubular column jacking construction check valve and a use method thereof. The check valve comprises a steel pipe column, a flow guiding device, a gate plate, a pressing plate strip, a pouring pipe and a high-strength bolt, and is characterized in that the steel pipe column is provided with a concrete pouring hole and an inner threaded hole, the gate plate is provided with a pouring hole and a slotted hole, and the high-strength bolt is connected with the steel pipe column and the gate plate. The using method of the check valve for the concrete-filled steel tubular column jacking construction comprises the following eleven links in sequence: welding the steel tubular column and the flow guide device, manufacturing an internal threaded hole in the steel tubular column, installing the steel tubular column, installing the check valve flashboard, installing the pressing plate strip, installing the pouring pipe, pouring concrete, closing the check valve, dismantling the pouring pipe, dismantling the pressing plate strip and dismantling the flashboard. Field welding and cutting operation of the steel pipe column and the concrete pouring short pipe is avoided, the construction efficiency is guaranteed, and meanwhile the turnover rate of the gate valve is increased.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a construction check valve of a steel pipe concrete column jacking method and a use method thereof. Background technique [0002] Concrete-filled steel pipe column is a steel-concrete composite structure formed by pouring concrete in steel pipes. The structure gives full play to the superior tensile properties of steel and provides strong restraint for the concrete filled inside, thereby increasing the compressive strength of concrete. The concrete filled in the steel pipe also provides lateral support for the steel pipe, making it less prone to buckling failure. [0003] The construction of CFST columns is divided into two parts: steel structure installation and concrete pouring. The method of concrete pouring is further divided into pumping jacking method and high-level drop method. Wherein, the pumping jacking method refers to that the concrete is pumpe...

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Problems solved by technology

[0006] In order to overcome the cumbersome on-site welding and cutting process and non-reusable technical defects of the existing steel pipe concrete column jacking method construction check valve, the present invention provides a steel pipe

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