Foundation pit supporting composite retaining wall and construction method thereof

Abstract

The invention provides a foundation pit supporting composite retaining wall. The foundation pit supporting composite retaining wall comprises a plurality of pipe piles arranged in the circumferentialdirection, and a cement soil retaining wall part positioned between two adjacent pipe piles and connected with the pipe piles to form a circumferentially closed retaining wall, wherein a grouting structure corresponding to the cement soil retaining wall part is arranged on the pipe wall of the pipe pile. The foundation pit composite cement soil retaining wall is simple in structure, simple in overall construction operation, short in construction period and low in cost. The invention further provides a construction method for the foundation pit supporting composite retaining wall.

Description

technical field [0001] The invention relates to a construction method of a retaining wall in the field of foundation pit support, in particular to a foundation pit support composite retaining wall and a construction method thereof. Background technique [0002] The cement-soil retaining wall in the prior art is usually drilled into the soil body through the drill pipe and drill bit of the drilling rig, and then the cement slurry is injected into the soil body through the grouting pipe to form the cement-soil pile body; For the cement-soil pile retaining wall, the pile holes drilled by the drilling rig need to have overlapping parts. However, although the pure cement-soil occlusal pile retaining wall has good water-stop performance, its ability to retain soil is poor; The soil capacity of the concrete piles is the reason for the retaining wall. Concrete pile retaining wall has better soil retaining capacity because of its strong structure and better compressive performance....

AI Technical Summary

Problems solved by technology

Although this kind of retaining wall reduces the number of piles and reduces the reduction compared with the double-row pile retaining wall; compared with the plug-in sheet pile retaining wall, it reduces the requirements for insertion accuracy, and Water-stop components can also be recycled and reused, but the construction period of concrete piles is long, and the number of concrete piles that play the main role of retaining soil is large, resulting in relatively high costs

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