Reamed carrier and stiffness core multi-component composite pile and soft soil foundation strengthening construction method

Abstract

The invention relates to a reamed carrier and stiffness core multi-component composite pile and a soft soil foundation strengthening construction method. The reamed carrier and stiffness core multi-component composite pile comprises a discrete pile, a stiffness core pile is inserted into the discrete pile vertically and penetratingly, the bottom end of the stiffness core pile is flush with the bottom end of the discrete pile, and the bottom ends of the stiffness core pile and the discrete pile are jointly connected with a spherical carried reamed head to form the reamed carrier and stiffness core multi-component composite pile. The soft soil foundation strengthening construction method by the reamed carrier and stiffness core multi-component composite piles includes driving a plurality of the discrete piles, the reamed carrier and stiffness core composite piles and / or stiffness core composite piles into a soft soil foundation; the construction steps of the discrete piles, the reamed carrier and stiffness core composite piles and the stiffness core composite piles include (1) discrete pile construction, (2) reamed carrier and stiffness core composite pile construction and (3) stiffness core composite pile construction. The composite pile has the advantages of good drainage effect and high bearing capacity, and the method has the advantages of simple and mature technology, remarkable strengthening superiority and high benefit.

Description

technical field [0001] The invention relates to a multi-component composite pile reinforcement technology for soft soil foundations, in particular a composite technology based on loose piles, rigid core piles and tamping carriers, which is suitable for reinforcement of soft foundations with uneven stratum distribution or different bearing capacity requirements. Background technique [0002] In highway soft soil foundation treatment technology, the methods to improve the bearing capacity of piles in composite foundation include the following three methods: ① Increase the stiffness of the pile body to reduce the compression deformation, ② Increase the diameter of the pile body to increase the side friction resistance and ③ Increase the volume of the pile tip Increase the bearing area. Each of these methods has its own limitations, and the individual use will be restricted by various factors, so that the pile-soil interaction and its bearing characteristics cannot be maximized....

AI Technical Summary

Problems solved by technology

[0004] Another object of the present invention is to provide a multi-component composite pile reinforcement soft foundation construction method, which has the characteristics of simple and mature technology, significant reinforcement advantages, low cost and high benefit; it can realize the harmless treatment and recycling of building demolition waste, And solve the problem of soft foundation reinforcement under special conditions such as complex stratum distribution and different bearing capacity requirements

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