Taking the deep foundation pit project of a high-rise building near the subway as an example, this paper analyzes the engineering overview and geological conditions. Based on the subway safety protection and monitoring items and control indicators of the foundation pit project, Midas-GTS software is used to treat the deep foundation pit, surrounding soil, adjacent buildings, and subway engineering as a system, and establish a three-dimensional simulation model of the foundation pit. Complete the simulation of the step-by-step excavation construction process of the foundation pit, and conduct numerical simulation analysis to obtain the horizontal and vertical deformation cloud maps of the subway structure under different working conditions. It Summarizes the maximum vertical and horizontal displacement of the subway, and compare it with the actual monitoring results. The results show that the model established by Midas-GTS is reliable, and the subway safety meets the requirements. The model establishment method and analysis method provide data support for similar projects in the future.
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Gao et al. (2024) studied this question.
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