Forming method of pressing-resistant plucking-resistant pile base

Abstract

The invention relates to an anti-pressure and anti-floating pile, comprising a cylinder pile body constituted by reinforced steel bar and concrete, characterized in that the reinforced steel expands outside at the bottom of pile body so as to form a big capitate chassis at the bottom of pile body, whose dimension in radial direction is larger than the pile body. The invention also discloses a pile method that multiple via holes are machined on the pipe wall at the lower end of steel pipe mold and the angle between the axes of via hole and the axes of steel pipe mold is acute angle; multiple reinforced steel bars are set in the steel pipe mold and ends of reinforced steel bars insert into via holes at the lower end of steel pipe mould; steel pipe mold and reinforced steel bars are driven into the foundation to the presetting depth together; Then the steel pipe mold is not driven and reinforced steel bars are driven to protrude with a certain length in outer oblique direction furthermore; and then steep pipe mold is drawn out and concrete is filled in so that concrete is used to fill in the space under steel pipe mold from the bottom of steel pipe mold; reinforced steel bars out of steel pipe mold are covered; finally the pile with larger bottom is formed. The formation is convenience. The pile structure can increase the anti-pressure and anti-floating capacity.

Description

technical field [0001] The invention relates to a pile foundation for buildings or bridge structures, in particular to a pile foundation with high bearing capacity. Background technique [0002] For high-rise buildings and bridges, pile foundations are required when the bearing capacity of the foundation is insufficient. This piling method, such as figure 1 As shown, a reinforced concrete pile 2 whose lower end is a tapered steel pipe pile head 1' is first driven into the foundation to the bearing layer or bedrock layer. Or pour concrete into the hole after drilling the foundation to form a pile, that is, a cast-in-situ pile. [0003] However, at present, whether it is piling or cast-in-place pile, the pipe pile is a straight column, which has a certain bearing pressure, but its ability to resist compression and pullout is limited. Contents of the invention [0004] Aiming at the problems of low pressure resistance and poor pullout resistance existing in current pile fo...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low pressure resistance and poor pullout resistance existing in current pile foundations, the purpose of the present invention is to provide a novel pile-forming method for high bearing capacity, compression and pullout pile foundations. The pile foundations formed by this method Good resistance to compression and pull-out

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