A Construction Method of Triaxial Mixing Pile in High Local Strength Stratum

Abstract

The invention relates to a construction method of a three-axis stirring pile in a stratum with relatively high local strength. The steps are: construction preparation → measurement and lofting → trench excavation → empty stirring to determine the processing range → rotary digging and backfilling sand → three-axis stirring pile Construction→grouting reinforcement→acceptance. In the present invention, the specific construction range affecting the three-axis mixing pile is determined by consulting the drawings and on-site survey, combined with the three-axis mixing drilling rig, and then using the rotary drilling rig to dig out the soil that affects the construction of the three-axis mixing pile and using machine-made sand Backfill the borehole, then carry out the construction of the three-axis mixing pile, and finally carry out surface grouting reinforcement on both sides of the three-axis mixing pile, which can effectively improve the construction efficiency, ensure the smooth progress of the construction, and ensure the construction quality. The input of materials such as concrete and concrete can reduce dust pollution in the process of earthwork excavation, storage, and transportation, and has a small impact on the environment.

Description

technical field [0001] The invention relates to the technical field of enclosure structure construction, in particular to a construction method of a three-axis stirring pile in a stratum with relatively high local strength. Background technique [0002] The construction method of three-axis mixing pile, as a construction method of retaining soil and water-stop curtain for foundation pit, has been more and more widely used in engineering construction, and has obtained relatively mature construction experience. With the continuous expansion of the scope of engineering construction, the three-axis mixing pile usually needs to be constructed under special conditions such as the foundation of the original building that has been demolished. Due to geological reasons, the foundation of the original building has been treated to varying degrees during construction. Due to the sudden change of geological conditions, and due to the improper storage or lack of original construction engi...

AI Technical Summary

Problems solved by technology

With the continuous expansion of the scope of engineering construction, the three-axis mixing pile usually needs to be constructed under special conditions such as the foundation of the original building that has been demolished. Due to geological reasons, the foundation of the original building has been treated to varying degrees during construction. Due to the sudden change of geological conditions, and due to the improper storage or lack of original construction engineering data, the layout of geological survey holes, etc., it is impossible to control the current stratum in detail. During the construction of three-axis mixing piles, it is easy to encounter local In the stratum with high strength, it is difficult to drill and form piles in the construction of three-axis mixing piles, which has a serious impact on the construction progress and construction quality.

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