Treatment method of deviation and fracture remediation of pile body of filling pile

Abstract

The invention discloses a remedial treatment method for cast-in-place pile deflection and fracture, which is characterized in that it includes: 1) measuring and measuring the defect position of the pile with low strain; 2) implementing correction of the pile body; Core, the core length exceeds the defect position, and the excess length is 1-2 times the diameter of the pile body; 4) High-pressure hole washing, remove mud, sand and other fillings in the defect position; 5) Clean the hole, return the sediment in the core hole Outside the core orifice; 6) High-pressure cement slurry punching and grouting: fill the crack at the defect position; 7) Intubation, inserting the grouting pipe, the special pipe for the quick-setting agent and the unloading pipe; 8) Sealing: seal the top of the core hole; 9) High-pressure grouting, filling the core hole with grout. 10) Carry out backfill consolidation grouting for the unloaded soil area and the hollow area at the pile side. The method of the invention is simple and easy to implement, the construction period for remedial treatment of cast-in-place pile quality defects is short, the remedial construction cost is low, the original engineering design is less changed, and the remedied piles are of reliable quality, and the original defective piles can all be repaired up to the standard after low-strain dynamic testing and retesting.

Description

technical field [0001] The invention relates to the technical field of pile foundations of construction engineering, in particular to a remedial treatment method for quality defects such as deflection and fracture of cast-in-situ piles. Background technique [0002] The pile foundation is the infrastructure of the building, and the solidity of the pile foundation project is the basic guarantee for the stability of the building for a century. Therefore, during construction, the cast-in-place piles must be up to standard. However, the quality defects of cast-in-situ piles will inevitably occur in construction, so how to take reasonable remedial measures for the quality defects of cast-in-situ piles, and how to make cast-in-situ piles with defective quality can reach the standard quickly, simply and economically has become a pile Research topics for basic engineering and technical personnel. [0003] At present, the commonly used methods for treating the defects of cast-in-si...

AI Technical Summary

Problems solved by technology

Therefore, the amount of design modification is huge, which is not conducive to the overall benefit and organizational management of the project

In the event of a large-scale pile foundation accident, the design cannot be modified to meet the requirements

[0008] To sum up, the existing technical methods have different limitations in terms of safety, quality, cost input, construction period and application conditions.

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