Six-axis cement soil mixing pile

Abstract

The invention provides a six-axis cement soil mixing pile. Six cement soil mixing piles are formed at one time and overlapped seamlessly, so that joints formed by original single-axis or two-axis cement soil mixing pile are reduced, the water-stopping effect and construction efficiency can be improved, the amount of labor used is reduced, and the construction period can be shortened by more than 2 / 3.

Description

Technical field [0001] The invention relates to a cement-soil mixing pile for strengthening soft soil and supporting foundation pits in geotechnical engineering, and particularly relates to a six-axis cement-soil mixing pile in the field of improving the strength of soft soil and supporting water and soil retaining of foundation pits. Background technique [0002] When strengthening the weak soil layer and supporting the foundation pit, the method of mixing cement slurry and soil is often used to form a cement-soil mixing pile, thereby greatly improving the strength and water resistance of the weak foundation. Compared with three-axis mixing piles, traditional single-shaft mixing piles and two-shaft mixing piles have the advantages of low water-cement ratio, less replacement soil, small cement content, and low cost within a certain range. However, single-shaft mixing piles or two-shaft mixing piles are formed by connecting one or two equal-diameter cylinders, such as figure 1 As ...

AI Technical Summary

Problems solved by technology

However, single-shaft stirring piles or two-shaft stirring piles are formed by the intersection of one or two equal-diameter cylinders, such as figure 1 As shown, a lap joint is formed between each pile or every two piles, which is easy to cause splits and leakage, which has a great impact on the water-tightness of the cement-soil mixing wall

For the single-axis or two-axis cement-soil mixing pile machine, its power is small, and the stability of the pile frame is poor. The pile machine is moved manually with wire rope traction. During construction, the machine needs to be moved frequently, which takes up a lot of working time and affects the construction efficiency. For the above problems, in order to reduce the number of moving machines and lap joints, reduce construction costs and improve work efficiency, single-axis mixing piles or two-axis mixing piles, the number of cement-soil mixing piles formed in one construction is small

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