Pile foundation reinforcing method

Abstract

The invention discloses a pile foundation reinforcing method. The method comprises the steps of drilling, grouting, pressure grouting and plugging. The pile foundation reinforcing method has the beneficial effects as follows: the upper ends of a plurality of hollow positions are drilled through a drill rod, and during reinforcing of a pile foundation, the efficiency of drilling a hollow position of the pile foundation is improved, so that the overall work reinforcing efficiency of the pile foundation reinforcing method is improved, a plurality of drilling frames are driven to synchronously rotate and move through rotation of a rotary table, it is guaranteed that the drilling frames on a drilling device drill the hollow position of the pile foundation more precisely, and more time and laborare saved during pile foundation reinforcing work; a fourth hydraulic pump pushes a slurry box to turn over front and back through a third hydraulic rod, so that a slurry passing opening and a grouting pipe are turned over and adjusted, slurry in the grouting pipe is prevented from being blocked, it is guaranteed that a grouting device conducts grouting on the hollow position of the pile foundation more smoothly, it is guaranteed that the hollow position of the pile foundation is filled with the slurry more fully and comprehensively, and the pile foundation reinforcing quality is improved.

Description

technical field [0001] The invention relates to the technical field of pile foundation reinforcement, in particular to a pile foundation reinforcement method. Background technique [0002] Pile foundation refers to a deep foundation composed of piles and pile caps (referred to as caps) connected to the top of the piles or a single pile foundation connected by columns and pile foundations. If the pile body is completely buried in the soil and the bottom of the cap is in contact with the soil, it is called a low cap pile foundation; if the upper part of the pile body is exposed to the ground and the bottom of the cap is above the ground, it is called a high cap pile foundation. Pile foundations are widely used in high-rise buildings. [0003] After the pile foundation is erected, the pile foundation needs to be reinforced. During the use of the existing pile foundation reinforcement method, the efficiency of drilling the preset hollow groove of the pile foundation is poor, an...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor drilling efficiency of the preset hollow grooves of the pile foundation during the use of the existing pile foundation reinforcement method, and the overall implementation of the pile foundation reinforcement method takes a long time, which affects the overall pile foundation. The construction progress of the foundation reinforcement, and the drilling device used in the reinforcement process is not accurate and suitable for the drilling position of the hollow groove of the pile foundation, which is easy to cause friction damage to the pile foundation components at the edge of the hollow groove, and the pile foundation is grouted During the reinforcement process, the efficiency of grouting to the hollow groove is slow, and the grouting is not dense enough, resulting in the problem of low overall strength of the pile foundation after reinforcement, and a reinforcement method for the pile foundation is proposed

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