Grouped drilling and pile implanting construction method

Abstract

A grouped drilling and pile implanting construction method comprises the following steps of (1) making preparations before construction; (2) installing two groups of power head assemblies; (3) drilling for cutting by the first group of power head assembly and drill pipes, a spiral drill pipe and a drilling tool thereof; (4) drilling for cutting by the second group of power head assembly and drillpipes thereof, the spiral drill pipe and the drilling tool; (5) performing guniting and stirring operation by the second group of power head assembly and the drill pipes thereof, the spiral drill pipeand the drilling tool; (6) lifting and detaching the drill pipes and the drilling tool; and (7) implanting precast piles. According to the grouped drilling and pile implanting construction method, the two groups of power head assemblies arranged on long guide rails of a column of a walking pile frame can perform drilling and tunneling, stirring and chambering operations in sequence, so that the surface flatness of pore walls is increased; and through horizontal shifting fine adjustment of the walking pile frame, the drill pipes fixedly arranged on the two groups of power head assemblies are accurately butted, so that frequent butting and detachment between the drill pipes and between the drill pipes and the drilling tool are avoided, the operation strength of an operator is reduced, the operation efficiency of drilling and pile implanting is increased, pile implanting construction quality is effectively guaranteed, and the equipment procurement cost is greatly reduced.

Description

technical field [0001] The invention relates to a construction method for planting piles in groups by drilling into holes, grouting and stirring, and implanting prefabricated piles into the ground. Background technique [0002] In the process of continuous development of urban construction, land resources are becoming less and less, and housing construction is developing towards high-rise buildings. Therefore, high-rise and super high-rise buildings have higher and higher requirements for the bearing capacity of pile foundations, and the requirements for anti-settlement deformation of buildings are also increasing. Higher and higher, buildings (structures) have higher and higher requirements for pull-out and horizontal resistance. In order to meet the requirements of bearing capacity and control deformation, the existing technology often adopts deep and long pile foundations, but the construction of hammering or static pressure pipe piles often cannot meet the performance re...

AI Technical Summary

Problems solved by technology

Therefore, in the two stages of running in and pulling out the drill, the operator needs to spend more time to connect and remove the drill pipe, which seriously affects the efficiency of pile planting; in addition, due to the grouting and mixing construction in the pre-drilled hole There is a certain time schedule requirement, too frequent drilling pipe and drilling tool connection procedures will affect the quality of prefabricated piles, and then reduce the technical performance of implanted piles

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