Concrete composite pile foundation

Abstract

The invention discloses a concrete composite pile foundation which comprises an anti-settlement pile buried into a soil layer, a pile cap coaxially arranged outside the top of the anti-settlement pilein a sleeving manner, and a bearing platform supported at the top of the pile cap, wherein the pile cap is a concrete prefabricated tubular pile; a space between the pile cap and the anti-settlementpile is filled with concrete for fixed connection; the anti-settlement pile comprises a steel pipe body and an anti-settlement mechanism arranged in the pipe body; the anti-settlement mechanism comprises four anti-settlement rods arranged in a 'cross' manner and four screw rod and nut pairs which correspond to the anti-settlement rods one to one and are used for driving the anti-settlement rods toextend out of the pipe body; a screw rod of each screw rod and nut pair is provided with a bevel gear. The pile foundation disclosed by the invention is reasonable in structure; looseness and longitudinal sliding during anti-settlement pile pulling on soft soil can be avoided; the anti-settlement pulling performance and the dynamic load resistance are improved.

Description

technical field [0001] The invention relates to the field of pile foundations, in particular to a concrete composite pile foundation. Background technique [0002] At present, a large number of concrete pile foundation structures are used in municipal engineering and house foundations in cities such as plains and seasides. It is difficult to carry out construction on soft soil using traditional methods. It is easy to loosen and slide longitudinally, and there are defects such as insufficient anti-sinking and pulling force, insufficient lateral shearing force and insufficient dynamic load resistance, which directly affect the stability and reliability of the building foundation. In the project "Research on Deformation Mechanism and Settlement Control Technology of High Railway Embankment Slope" declared by the inventor of this application (this project is an open project of the key laboratory of the Ministry of Education jointly established by the Ministry of Education for ro...

AI Technical Summary

Problems solved by technology

[0003] In view of this, the purpose of the present invention is to solve the problem that the existing anti-sinking and pulling-out structure is simple, and the anti-sinking and pulling-out piles on the soft soil are easy to loosen and slide longitudinally, and the anti-sinking and pulling-out performance and the dynamic load resistance are insufficient, resulting in the construction foundation Based on the defects and deficiencies of poor stability and reliability, a reasonable structure is provided, and the anti-sinking and uplifting pile on soft soil will not loosen and longitudinally slide, and the anti-settling and pulling-out performance and dynamic load resistance have been improved. A concrete composite pile foundation for soft soil with good stability and reliability of the building foundation

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