上海交通大学学报

上海交通大学学报 ›› 2010, Vol. 44 ›› Issue (06): 721-725.doi: 10.16183/j.cnki.jsjtu.2010.06.001

所属专题： 王建华教授学报发文专辑

• •    下一篇

上海世博500 kV地下变基坑降水流固耦合分析

刘婧, 陈锦剑, 王建华()   

  1. 上海交通大学土木工程系，上海 　200240
  • 收稿日期:2009-10-27 出版日期:2010-06-01 发布日期:2010-06-30
  • 作者简介:刘婧（1983-)，女，重庆市人，硕士生，研究方向：基坑工程．|王建华（联系人），男，教授，博士生导师，电话（Tel.):021-34207003; E-mail: wjh417@sjtu.edu.cn.
  • 基金资助:
    国家自然科学基金资助项目(50679041);上海市科委科技攻关资助项目(08201200903);上海市重点学科建设资助项目(B208)

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

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摘要：

以上海500 kV世博地下输变电站为工程背景，以Biot固结理论为基础，采用数值方法对深基坑降水开挖过程进行了流固耦合分析．模拟抽水试验，并采用位移和孔压反分析法确定土层计算参数．建立流固耦合分析模型，分别采用稳态分析法和生死单元法模拟基坑的降水和开挖过程，同时求解出渗流场和位移场的变化．通过计算值与实测值的比较，证明了流固耦合方法分析基坑降水的正确性和可行性．

关键词: 流固耦合, 抽水试验, 基坑降水, 有限元方法

Abstract:

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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