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| FluidStructure Coupling Analysis of Dewatering and Excavation in 500 kV Shanghai Expo Underground Substation |
LIU Jing,CHEN Jinjian,WANG Jianhua |
| (Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China) |
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Abstract On the background of 500 kV Shanghai Expo underground substation, a fluidstructure coupling FEM analysis of dewatering and excavation was made based on the Biot’s consolidation theory. A pumping test was simulated to determine soil parameters by backanalysis of displacement and pore pressure. A fluidstructure coupling model was built to analyze dewatering and excavation with steady analysis method and birthdeath element method respectively. Seepage and stress fields were solved at the same time. With comparison of the calculated and measured values, the fluidstructure coupling method used in the analysis of dewatering and excavation was proved to be correct and feasible.
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Received: 27 October 2009
Published: 30 June 2010
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