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Midas-GTS Three-dimensional Numerical Simulation Analysis of the Impact of Deep Excavation on Subway Safety Assessment

Author(s)

Su Gao1,*, Honggang Yang2

Affiliation(s)

1College of Building and Engineering, Nantong Vocational University, Nantong, Jiangsu, China 2Shanghai Underground Space and Engineering Design and Research Institute, East China Architectural Design and Research Institute Co., Ltd., Shanghai, China *Corresponding Author.

Abstract

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.

Keywords

Midas-GTS; Complex Environment; Near the Subway Deep Foundation Pit; The Impact on the Surrounding Environment; Numerical Simulation Analysis

References

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