Foundation pile construction method

Abstract

The invention discloses a method for constructing a foundation pile. By the method, integrity of a precast pile can be ensured in the construction process, the precast pile cannot be damaged, a compaction effect is avoided basically, mud discharge and raw material consumption are low, and pollution to surrounding construction environment is light. The method comprises the following steps of: 1, drilling a selected pile position to obtain a pile arranging hole, wherein the diameter of the pile arranging hole is greater than that of the precast pile; 2, reaming the lower part of the pile arranging hole to obtain a bottom enlarging part; 3, injecting cement paste into the bottom enlarging part, wherein 50 to 100 volume percent of mud in the bottom enlarging part is replaced by the cement paste; 4, injecting cement paste into other parts, except the bottom enlarging part, of the pile arranging hole, wherein the replacement ratio is 20 to 60 percent; 5, putting the precast pile into the pile arranging hole; and 6, standing the precast pile, and performing natural curing.

Description

technical field [0001] The invention relates to the technical field of pile foundation construction, in particular to a foundation pile construction method. Background technique [0002] The foundation pile construction method refers to the single pile construction method in the pile foundation construction process. At present, there are three main pile foundation construction methods: hammering type, static pressure type and embedded type. The hammering type and the static pressure type refer to the construction methods of driving or pressing the prefabricated piles into the ground, and the embedded type refers to pouring concrete piles into the ground at the construction site. [0003] Since the hammering type and the static pressure type are construction methods that use physical methods to drive or press the prefabricated piles into the ground, there is a possibility of damage to the prefabricated piles, which will affect the integrity of the prefabricated piles and affe...

AI Technical Summary

Problems solved by technology

In order to meet the requirements of bearing capacity and deformation control, the existing technology often adopts deep and long pile foundations, and the construction of hammered or static pressure pipe piles often cannot meet the performance requirements such as pullout resistance and horizontal force resistance. Many high-rise, super high-rise buildings and roadbeds, etc. Bored cast-in-situ piles (embedded) are basically used for foundations with dynamic load requirements, but bored piles are expensive, unstable in quality, and mud discharge pollutes the environment, which does not conform to the development concept of low-carbon and environmental protection