Pile construction method

Abstract

The invention discloses a pile construction method which includes the steps of placing a pipe sinking system at a proper position, sinking a pipe and carrying out pouring. After the pipe is sunk, bottom expanding is conducted firstly, and pouring is conducted secondly. The pipe sinking system comprises a single-steel outer pipe with the set rigidity, a single-steel inner ramming pipe and a connecting device. The outer diameter of the inner ramming pipe is smaller than the inner diameter of the outer pipe. A bottom expanding method includes the steps that filler is fed according to the set feeding amount, wherein the feeding height H is equal to the feeding volume V; the upper portion of the inner ramming pipe is provided with an upper ramming plate with the diameter not smaller than the inner diameter of the outer pipe, and the lower portion of the inner ramming pipe is provided with a lower ramming plate with the diameter not larger than the inner diameter of the outer pipe; and an inner ramming pipe hammer is formed by the upper ramming plate, the lower ramming plate and the inner ramming pipe. By means of the pile construction method, the pipe sinking technology, the feeding technology and the bottom expanding technology are improved, the working efficiency is improved, and the pile construction method is a novel bottom expanding pile technology which is controllable in process and reliable in quality.

Description

technical field [0001] The invention relates to a pile construction method. Background technique [0002] The existing construction techniques of static pressure cast-in-place piles, prefabricated piles, bottom-expanded piles, and composite piles, among them, sinking pipe pile technology, bottom-expanding technology, feeding technology, and core-inserting pile technology need to be improved, and the work efficiency needs to be improved. [0003] The existing pile driver has a maximum pile pressing force of 1,200 tons (self-weight + counterweight), a maximum pile pulling force of 800 tons, and a maximum full load of 1,200+800=2,000 tons, which is difficult to meet the construction requirements in general sites. Contents of the invention [0004] The object of the present invention is to provide a construction method of piles with convenient construction and less counterweight of pile drivers. [0005] Technical solution of the present invention is: [0006] A construction...

AI Technical Summary

Problems solved by technology

[0003] The existing pile driver has a maximum pile pressing force of 1,200 tons (self-weight + counterweight), a maximum pile pulling force of 800 tons, and a maximum full load of 1,200+800=2,000 tons. It is difficult for general sites to meet the construction requirements.