Construction method of pipe pile in mixing pile

Abstract

The invention belongs to the technical field of prefabricated pipe pile construction, and discloses a construction method for planting pipe piles in stirring piles, which includes determining the pile position of the pipe pile, opening a through hole on the front side wall of the pipe pile; Stir to form a stirring pile. When stirring, use cement slurry as a curing agent to spray grout; put the front end of the pipe pile downwards and penetrate the stirring pile in a vertical direction, and detect the pore water pressure of the sinking depth in real time ; If the pore water pressure is greater than the threshold, the soil inside the pipe pile is extracted; the pipe pile is sunk to the design elevation. The invention fully combines the advantages of cement mixing piles and pipe piles, and can improve the construction efficiency and construction quality of pipe piles; by monitoring the circumferential and axial pore water pressures of the mixing piles, it is possible to timely perform partial monitoring of the soil body. Extraction can effectively solve the soil squeezing effect generated when the pipe pile penetrates, improve the bearing capacity of the pipe pile, avoid damage to the pipe pile during the implantation process, and further improve the construction quality.

Description

technical field [0001] The invention relates to the technical field of prefabricated pipe pile construction, in particular to a construction method for pipe piles planted in stirring piles. Background technique [0002] Cement-soil mixing piles are often used to reinforce saturated soft clay foundations. Using cement as a curing agent, the soft soil and curing agent are forcibly stirred deep in the foundation through a mixing pile machine, and a series of physical forces generated between the curing agent and soft soil are used. The chemical reaction makes the soft soil harden into a high-quality foundation with integrity, water stability and certain strength. Cement mixing piles are applicable to a wide range of soil types, with a large reinforcement depth, a wide range of applicable projects, a short construction period and low cost. The pipe pile is to squeeze the prefabricated pipe pile into the soil through hammering method and static pressure method to meet the bearin...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a construction method for planting pipe piles in mixing piles, so as to solve the problem that the pipe piles are easily damaged during the construction process of pipe piles implanted in mixing piles, thereby affecting the construction progress and construction quality.

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