Double-acting self-stressing combined uplift pile and pile forming method

Abstract

The invention relates to a double-acting self-stressing combined uplift pile and a pile forming method. The problems of influence on the durability of a pile body because a traditional prestressed concrete uplift pile is easy to generate cracks, large use quantity of reinforcing steel bars, high engineering cost and long construction period can be effectively solved. The invention has the solving technical scheme that the invention comprises a soil-cement stirring pile, prefabricated reinforcing steel bar-reinforced concrete core piles and a pile forming method thereof. The prefabricated reinforced concrete core piles are arranged in the soil-cement stirring pile, the upper part of a second reinforced concrete core pile is connected with a basic bottom plate, one end of a steel stranded wire is connected with a first anchor ingot plate in the lower part of a first reinforced concrete core pile by an anchor device, and the other end is connected with a third connecting steel plate in the basic bottom plate. According to the double-acting self-stressing combined uplift pile and the pile forming method, the problem of crack resistance of concrete is solved. The operation of prestressed tensioning is carried out before the bottom plate is poured with the concrete, the probability of water seepage of the bottom plate is lowered, the construction period is shortened, the construction difficulty is lowered, the cost is saved, the construction period is short, and the application range is extensive. The double-acting self-stressing combined uplift pile has favorable social and economic benefits.

Description

technical field [0001] The invention relates to a building foundation foundation pile and a pile forming method, in particular to a dual-action self-stress combined uplift pile and a pile forming method. Background technique [0002] In recent years, with the continuous emergence of high-rise and super high-rise buildings, the foundation is buried deeper and deeper. At the same time, the development and utilization of pure basements, podiums or relatively independent underground structures such as sunken squares, underground garages, underground shopping malls, civil air defense projects, pump rooms, etc. , the resulting anti-floating problem of underground structures has become increasingly prominent. In this regard, it is usually solved by adding anti-lift floating piles and anti-floating anchors. [0003] Some of the current anti-floating pile designs use ordinary reinforced concrete cast-in-situ piles. The design specifications for this anti-floating pile require that ...

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Problems solved by technology

[0006] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a dual-action self-stress combined uplift pile and pile forming method, which can effectively solve the problem that existing prestressed concrete uplift piles are prone to cracks and affect the pile. The durability of the body, the large amount of steel bars, the high cost of the project, and the long construction period

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