Steel pipe pile capable of achieving convertible grouting at pile end and pile side and pouring technology of steel pipe pile

Abstract

The invention discloses a steel pipe pile capable of achieving convertible grouting at a pile end and a pile side and a pouring technology of the steel pipe pile. The steel pipe pile comprises an outer sleeve and a grouting device rotationally connected with the interior of the outer sleeve; the grouting device is rotated, and when first pile side grouting holes and second pile side grouting holescorrespond to each other one to one, first pile end grouting holes and second pile end grouting holes are overlapped staggeredly; when the first pile end grouting holes and the second pile end grouting holes are in one-to-one correspondence, the first pile side grouting holes and the second pile side grouting holes are staggered but not communicated with each other, and the pre-drilling diameteris 80% of the designed outer diameter of the outer sleeve so that pre-drilling can obviously reduce the soil squeezing effect generated in the steel pipe pile driving process. The grouting device is placed into the outer sleeve after the outer sleeve is driven into soil, and the relative positions of the grouting holes in the grouting device and the grouting holes in the outer sleeve are adjustedby rotating the grouting device, so that the convertible grouting design of the pile end and the pile side is achieved, grouting is carried out on the pile end and the pile side separately, the bearing performance of the steel pipe pile can be improved after grouting, the overall function is complete, and the practicability is high.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a steel pipe pile with convertible grouting at the pile end and pile side and its pouring process. Background technique [0002] At present, steel pipe piles used in pile foundations are adopted: the steel pipes are directly driven into the soil, and the bearing capacity of the pile foundation is provided by the frictional resistance of the soil on the side of the pile and the pile end force. , which is not conducive to the bearing performance of the pile side and pile tip soil. In addition, it is difficult to realize pile side and pile tip grouting, but pile side and pile tip grouting can effectively improve pile side friction resistance and pile tip soil bearing capacity. [0003] Therefore, the steel pipe pile structure and pouring process of the pile end and the pile side that can be converted to grouting according to the present invention can better solve the ...

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Problems solved by technology

[0002] At present, steel pipe piles used in pile foundations are adopted: the steel pipes are directly driven into the soil, and the bearing capacity of the pile foundation is provided by the frictional resistance of the soil on the side of the pile and the pile end force. , which is not conducive to the bearing performance of pile side and pile tip soil

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