Journal of Shanghai Jiao Tong University ›› 2010, Vol. 44 ›› Issue (06): 721-725.doi: 10.16183/j.cnki.jsjtu.2010.06.001

Special Issue: 王建华教授学报发文专辑

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Fluid-Structure Coupling Analysis of Dewatering and Excavation in 500 kV Shanghai Expo Underground Substation

LIU Jing, CHEN Jin-jian, WANG Jian-hua()   

  1. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2009-10-27 Online:2010-06-01 Published:2010-06-30


On the background of 500 kV Shanghai Expo underground substation, a fluid-structure 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 back-analysis of displacement and pore pressure. A fluid-structure coupling model was built to analyze dewatering and excavation with steady analysis method and birth-death element method respectively. Seepage and stress fields were solved at the same time. With comparison of the calculated and measured values, the fluid-structure coupling method used in the analysis of dewatering and excavation was proved to be correct and feasible.

Key words: fluid-structure coupling, pumping test, dewatering in excavation, finite element mathod (FEM)

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