Squeeze-expansion type steel pipe pile

Abstract

The invention discloses a squeeze-expansion type steel pipe pile, comprising a pipe pile main body, wherein the pipe pile main body is provided with an upper pipe orifice and a lower pipe orifice, thelower pipe orifice is provided with a sealing plate, and the side wall of the pipe pile main body is provided with a plurality of squeeze-expansion hole groups from bottom to top, and each squeeze-expansion hole group comprises a squeeze-expansion hole I and a squeeze-expansion hole II; the number of squeeze-expansion assemblies is the same as that of the squeeze-expansion hole groups, each squeeze-expansion assembly comprises a squeeze-expansion bottom plate, two sides of each squeeze-expansion bottom plate are respectively provided with a squeeze-expansion side plate, each squeeze-expansionside plate is provided with a load top plate, and comprises a first fixed plate, a first movable plate, a second movable plate and a second fixed plate which are hinged to each other from bottom to top, the first fixed plates are fixedly connected with the squeeze-expansion bottom plates, and the second fixed plates are fixedly connected with the load top plate; when the load top plate is close to the squeeze-expansion bottom plate, the first movable plates and the second movable plates are rotated to form forming corner parts bulging outward, and the forming corner parts respectively extendout of the squeeze-expansion hole I and squeeze-expansion hole II. The steel pipe pile has the characteristics of great lateral resistance and strong carrying capacity.

Description

technical field [0001] The invention relates to the technical field of building construction, more specifically, it relates to an extruded and expanded steel pipe pile. 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. [0003] In addition, the side resistance of the steel pipe pile only depends on the friction force generated by the pile side soil and the outer wall of the steel pipe pile, so the bearing capacity is limited, and the steel pipe pile is often used for the foundation of the building with a large upper load, and the price is relatively high. Therefore, how to It is particularly important to improve the side friction resistance and ...

AI Technical Summary

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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