Concrete-filled steel tube pile structure and construction method thereof

Abstract

The invention provides a concrete-filled steel tube pile structure and a construction method thereof, and belongs to the technical field of concrete-filled steel tube piles. The concrete-filled steeltube pile structure comprises a steel pipe pile body and a tightening mechanism; the steel pipe pile body comprises seamless steel pipes and connecting steel pipes, and the end-to-end joints of the two seamless steel pipes are sleeved with the two ends of the seamless steel pipes. The tightening mechanism comprises a connecting ring, a first mounting rod, a baffle, a first spring, a second mounting rod, a tightening shaft and a first connecting block; one end of the first mounting rod is fixed to the connecting ring, and the other end of the first mounting rod is fixed to the first connectingblock; the first spring is arranged in the first mounting rod, and one end of the second mounting rod is fixed to the first connecting block while the other end is fixed to the seamless steel pipe; the tightening shaft is arranged in the second mounting rod and penetrates through the pipe wall of the seamless steel pipe; and the baffle is arranged between the first spring and the tightening shaft.According to the concrete-filled steel tube pile structure and the construction method thereof, automatic alignment is achieved through the steel pipe pile body of the structure, then poured concreteis the same in thickness, the steel pipe pile body is perpendicular to the ground, and the bearing capacity of the steel pipe pile body cannot be reduced.

Description

technical field [0001] The invention relates to the technical field of steel pipe concrete piles, in particular to a steel pipe concrete pile structure and a construction method thereof. Background technique [0002] Concrete for concrete piles includes piles made of ordinary reinforced concrete and prestressed concrete. It has the advantages of saving wood and steel, being difficult to use for a long time, and low cost. It has been widely used in foundation engineering of hydraulic construction, industrial construction, civil construction and bridges. , It is also commonly used for anti-skid or water isolation of slope and foundation pit support. When constructing super high-rise buildings in areas with very thick soft soil cover, and constructing important buildings such as bridges and wharfs across water, super-long piles of 50M to 70M are often used. Practice has proved that the bearing capacity of super-long piles is often controlled by the strength of the pile body. B...

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Problems solved by technology

[0004] In order to make up for the above deficiencies, the present invention provides a steel pipe concrete pile structure, which aims to improve the eccentricity of the bottom hole when the steel pipe is installed, resulting in the uneven thickness of the concrete poured between the bottom hole and the steel pipe in the later stage, and the bearing capacity is greatly reduced. The ground is not vertical, further causing the problem of load drop

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