SMW construction method pile applied to subway deep foundation pit engineering

Abstract

The invention discloses an SMW construction method pile applied to subway deep foundation pit engineering. The SMW construction method pile comprises a foundation, foundation pits, three-axis stirrers, slurry pipes, slurry filling areas, casing drills, foundation pit planes, H-shaped channel steel and lifting holes. The SMW construction method pile has the beneficial effects that the SMW construction method pile is applied to foundation pit enclosure construction, good economic and social benefits are obtained, compared with an underground diaphragm wall, the cost is saved by about 30%, the anti-permeability performance is good, the permeability coefficient reaches 9-6 cm / s, the pile body rigidity is similar to that of a cast-in-place pile, spoil is little, and pollution to the surroundingenvironment is small; and the SMW construction method pile has the characteristics of small disturbance during construction, no mud pollution, small vibration noise, good water stop performance, short construction period, less waste soil outward transportation, low construction cost and the like.

Description

technical field [0001] The invention relates to a construction method pile, in particular to a SMW construction method pile used in subway deep foundation pit engineering, and belongs to the technical field of building construction. Background technique [0002] SMW construction method pile, which is the abbreviation of Soil Mixing Wall, came out in Japan in 1975, and now accounts for about 40% of the ground connection walls in Japan. This construction method is now widely used in Southeast Asian countries, the United States, France, Germany and many other regions. In 2010, it was popularized very quickly in Shanghai, Hangzhou, Nanjing, Shaoxing and other places in our country. However, the traditional construction method piles cannot form a continuous, complete and seamless underground continuous wall with certain strength and rigidity, and the construction period is long, the cost is high, and the environmental pollution is large, so it is not suitable for deep foundation ...

AI Technical Summary

Problems solved by technology

However, the traditional construction method piles cannot form a continuous, complete, and seamless underground continuous wall with certain strength and rigidity, and the construction period is long, the cost is high, and the environmental pollution is large, so it is not suitable for deep foundation pit projects in cities.

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