Research on the Design of Guide Wall of Diaphragm Wall doubled as Retaining Wall in Deep Foundation Pit

Abstract

It was repeated in the traditional design and construction process of the retaining wall and guide wall of diaphragm wall, resulting in prolonged construction period, increased the amount of temporary structural concrete pouring and demolition, and caused data waste and environmental pollution, which does not meet the requirements of green construction. In this paper, based on the deep foundation pit project of the standard underground station of rail transit, the structural form of the guide wall of diaphragm wall is reformed by coordinating the construction sequence of guide wall and retaining wall. The traditional scheme is optimized by calculating the stress on guide wall, which was doubled as a retaining wall. It reduces the dosage of concrete of guide wall and retaining wall engineering 18.16%. Further, we systematically evaluated in the economic and social benefits of the guide wall doubled as a retaining wall in this paper. The results show that the optimized scheme has perfect design function and safe and reliable structure. Compared with the traditional scheme, the optimized scheme can reduce the total cost of related projects by about 24.36% and shorten construction period. The research in this paper has significant engineering economic value and social benefit, which can provide reference for the design and construction of similar projects.