Composite retaining pile and construction method thereof

Abstract

The invention relates to a composite retaining pile and a construction method thereof. The composite retaining pile comprises a pipe pile and a flexural member. The pipe pile is provided with an innercavity and connected with the flexural member. The flexural member comprises an extension part, and the extension part is arranged below the pile bottom of the pipe pile and used for being inserted into a hole below the pipe pile and being connected with a soil body. The construction method of the composite retaining pile comprises the steps that the pipe pile is vertically arranged on the ground; a soil body below the pipe pile is dug to form a hole in the soil body below the pipe pile, and the pipe pile is sunk; when the depth of the hole reaches the preset elevation, the flexural member isplaced in the hole, and the part, located below the pile bottom of the pipe pile, of the flexural member is inserted into the hole; and concrete is poured into an inner cavity of the pipe pile, so that the flexural member is connected to the pipe pile, and the part, located below the pile bottom of the pipe pile, of the flexural member is connected to the inner wall of the hole. Thus, the lengthof the pipe pile is increased, the built-in depth of the pipe pile is guaranteed, and the foundation pit meets the stability and anti-overturning stability. In addition, cost increase caused by the fact that the construction scheme is changed due to the fact that the pipe pile cannot be driven into a hard rock stratum can be avoided.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a composite enclosure pile and a construction method thereof. Background technique [0002] The foundation pit is an earth pit excavated at the foundation design position according to the elevation of the foundation and the plane size of the foundation. In order to ensure the safety of underground construction personnel and the surrounding environment of the foundation pit, surrounding protection piles are usually used to support the foundation pit. [0003] Prefabricated pipe piles are a commonly used form of enclosure for excavation of foundation pits. They have the advantages of low comprehensive cost, fast construction speed, high pile quality, less material waste and less environmental pollution. They are widely used in construction engineering, water conservancy, Electricity, highway and other fields. However, during the construction process, ordinary prefabrica...

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a composite retaining pile and its construction method, which can ensure the embedding depth of the pipe pile, so that the foundation pit can meet the overall stability and anti-overturning stability; moreover, it can also solve the problem that the pipe pile cannot be driven into the hard The problem of cost increase caused by changing the construction plan due to rock formation

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