Abstract

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Title:: Research on Finite Element Simulation and Monitoring of Influence Subway Deep Foundation Pit Excavation on Adjacent Building

Author(s):: -; School of Mechanical and Civil Engineering, China University of Mining & Technology (Beijing)

Keywords:: foundation pit excavation; subway station; numerical simulation; influence analysis; monitoring analysis

Abstract:: Taking a highrise building of deep foundation pit surrounding Chaoyangmen subway station in Beijing as background,a three-dimension numerical model with considering displacement field and seepage field was established using finite element software PLAXIS to simulate the influence of deep foundation pit excavation on adjacent high-rise building. The deformation and settlement of high-rise buildings caused by dewatering and foundation pit excavation were analyzed and calculated. Combined with the actual data, the loading and unloading effects caused by the relative location of pit and high-rise buildings and excavation depth were discussed. The results show that numerical simulation results are close to actual data, which provides a reference to analysis of surrounding environment change caused by deep foundation pit excavation and similar engineering.