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Foundation pit excavation construction is a widespread underground engineering activity in urban construction. More and more foundation pit projects are adjacent to existing subway tunnels. Through the engineering example, the thesis analyzes the influence of deep foundation pit construction supported by double-row piles on the structural safety of adjacent subway tunnels. Firstly, the risks of the project are analyzed, and then the structural safety control standard is determined according to similar engineering and related specifications. On this basis, the finite element numerical simulation software is used to calculate and analyze the deformation and force of the subway tunnel structure during the foundation pit construction, and the safety impact of the subway tunnel structure during the foundation pit construction is evaluated.

Finite Element Analysis of the Influence of Deep Foundation Pit Excavation Construction on Adjacent Subway Tunnel Structure