Evaluation and Analysis of Influence of Foundation Pit Excavation on Simulation Results of Adjacent Existing Subway Station Section Structure
In this paper,the Midas GTS NX finite element software is used to establish a three-dimen-sional model.Combined with the solid foundation pit excavation project,the influence of the foundation pit excavation process on the adjacent subway section structure is simulated and analyzed,and the influence of its deformation and displacement is evaluated.The results show that the deformation displacement of the auxiliary structure of the station adjacent to the excavated foundation pit is larger than that of the main body of the station and the tunnel section as a whole,and the deformation influence trend is stable,in which the influence of the vertical displacement is greater than that of the horizontal displacement.Most of the extreme values of the influence occur when the diagonal bracing is removed,and the change rate is large.The research conclusion can provide control experience and technical guidance for similar projects in the future.
excavation of foundation pitexisting metro stationsnumerical simulationdisplacement due to deformation
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