Building pile foundation construction method

Abstract

The invention discloses a building pile foundation construction method, relates to the field of building foundation construction, and solves the problems that dregs in pile holes are not cleaned completely and a drilling rig is inconvenient to move due to muddy ground after adoption of mud protection wall operation in the prior art. The method in the technical scheme is characterized by comprisingthe following steps of (1), site preparation before construction; (2), burying of a pile casing; (3), grouting; (4), drilling; (5), hole cleaning; (6), hanging of a reinforcement cage; (7), concretepouring; and (8), pile forming. According to the method, the dregs at the bottoms of the holes are cleaned more sufficiently by adopting a pneumatic stirring mode, furthermore, mud splashed on the ground is guided, so that the muddy degree of the ground of the construction site is reduced, and the drilling rig is convenient to move.

Description

technical field [0001] The invention relates to the field of building foundation construction, more specifically, it relates to a method for building pile foundation construction. Background technique [0002] With the development of civil engineering technology, more and more pile foundations are used in engineering construction. The commonly used method in pile foundation drilling construction is the percussion drilling rig drilling construction method. When using percussion drilling rigs for construction, mud protection is required. Drilling, and in order to better improve the quality of the post-pile foundation construction after the drilling, it is necessary to use double drill bits to clear the hole and other methods to clean up the dregs at the bottom of the hole, but in the construction of the mud retaining wall, the thickness of the dregs at the bottom of the hole Even after clearing the hole, there will often be the problem that the thickness of the ballast exceeds...

AI Technical Summary

Problems solved by technology

[0002] With the development of civil engineering technology, more and more pile foundations are used in engineering construction. The commonly used method in pile foundation drilling construction is the percussion drilling rig drilling construction method. When using percussion drilling rigs for construction, mud protection is required. Drilling, and in order to better improve the quality of the post-pile foundation construction after the drilling, it is necessary to use double drill bits to clear the hole and other methods to clean up the dregs at the bottom of the hole, but in the construction of the mud retaining wall, the thickness of the dregs at the bottom of the hole Even after clearing the hole, there will often be the problem that the thickness of the ballast exceeds the standard; and during the construction process, when the mud retaining wall is used for construction, the construction site will be muddy, which will cause the problem of inconvenient movement of the drilling rig. During the process, the soil layer will continue to be disturbed, so that the surface of the soil layer will be further stirred into mud, making the movement of the drilling rig more inconvenient or even impossible to move. At this time, it can only be solved by stopping work or using the method of laying steel plates. Increased construction cost; the existing pile foundation construction method has the problem that the thickness of the bottom of the hole exceeds the standard and the drilling rig is prone to inconvenient movement after the mud wall is used