Anti-crack SMW construction method pile and construction method thereof

Abstract

The invention relates to the technical field of deep foundation pit supporting, in particular to an anti-crack SMW construction method pile and a construction method thereof. The anti-crack SMW construction method pile is characterized in that a certain quantity of vinylon staple fibers are arranged in a pile body of the SMW construction method pile, the vinylon staple fibers are put in the pile body construction process of the SMW construction method pile, and the vinylon staple fibers are uniformly mixed with cement soil of the SMW construction method pile. The anti-crack SMW construction method pile has the advantages that the toughness of the cement soil is greatly improved, so that the deformation of the cement soil can be coordinated with the deformation of interpolated profile steel, and cracks are reduced; and the construction is convenient, existing construction method pile construction equipment can be used without transformation, and existing processes do not need to be changed.

Description

technical field [0001] The invention relates to the technical field of deep foundation pit support, in particular to a crack-resistant SMW construction method pile and a construction method thereof. Background technique [0002] The SMW construction method pile is to use special multi-axis mixing to drill and cut the soil on the spot, and at the same time inject the cement slurry into the soil at the end of the drill bit. Before the mixture is hardened, insert H-shaped steel or other profiles into the mixing pile body to form a continuous, complete, and seamless underground continuous wall with certain strength and rigidity. This wall can be used as the foundation pit for underground excavation Soil retaining and watertight structures. The most commonly used construction equipment for SMW construction method piles is the three-axis drilling and excavation mixer. Its main features are simple structure, good water-stop performance, short construction period, low cost, and low...

AI Technical Summary

Problems solved by technology

However, when the foundation pit is deep, the deformation of the SMW construction method pile is large, resulting in small cracks in the pile body, which affects its water-stop performance. The problem is particularly prominent in the biogas-containing soil layer. Methane is released in the pit, forming a leakage channel, destroying the soil structure inside and outside the foundation pit, and causing the foundation pit to become unstable