Support pile structure with adjustable prestress and construction method

Abstract

The invention discloses a support pile structure with adjustable prestress and a construction method. The support pile structure comprises a support pile body, an anchor cable, a prestress device for applying tension, and a bottom plate horizontally arranged on soil. The support pile body is formed by pouring concrete, a steel reinforcement cage for fixing the anchor cable is arranged inside the support pile body, and the steel reinforcement cage is of a meshed metal structure formed by fixing a plurality of criss-crossed steel bars. The support pile body is fixedly arranged at the edge of the soil. The anchor cable is arranged in the support pile body and fixedly connected with the steel reinforcement cage. According to the support pile structure with the adjustable prestress and the construction method, the anchor cable and the steel reinforcement cage are embedded in the support pile body together, and the bearing capacity of the support pile to soil can be improved; the free section of the anchor cable is of an arch structure, prestress on the anchor cable can be adjusted in real time according to loads borne by the soil, and thus the surroundings are well protected and the construction safety is well ensured. The support pile structure with the adjustable prestress further has the advantages of being simple in structure, easy to implement and good in support effect.

Description

technical field [0001] The invention relates to the field of support piles, in particular to a support pile structure provided with prestressed anchor cables and capable of adjusting the size of the prestress according to soil loads, and a construction method for the support piles. Background technique [0002] The foundation pit support construction of construction engineering is the foundation of construction engineering. With the emergence of a large number of buildings in the city center, there are more and more foundation pit projects. At the same time, dense buildings and complex underground facilities around deep foundation pits make Foundation pit engineering support has been widely valued and applied. The main function of the foundation pit support structure is to support the soil wall. In addition, the enclosure structures such as steel sheet piles, concrete sheet piles and cement mixing piles also have different degrees of water isolation. The original support me...

AI Technical Summary

Problems solved by technology

The original support method is mainly to do support on the side of the pile without soil, which will not only waste manpower, material and financial resources in the later stage, but also cannot be applied to various emergencies. If the load on the upper part of the foundation pit increases, there will be May cause pile support to become unstable

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