Numerical analysis of electroosmostic consolidation based on coupled electrical field-seepage field-stress field

WANG Liu-jiang; LIU Si-hong; WANG Jun-bo; ZHU Hao

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Numerical analysis of electroosmostic consolidation based on coupled electrical field-seepage field-stress field

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- Numerical analysis of electroosmostic consolidation based on coupled electrical field-seepage field-stress field
- Vol. 33, Issue 6, (2012)
- 作者机构：
  
  1. 河海大学水利水电学院,南京,210098
  2. 西安热工研究院有限公司,西安,710032
  3. 南水北调中线干线建设管理局,北京,100038
- 作者简介：
- 基金信息：
- DOI：
  CLC： O242.21
- Online First：14 June 2012，
  
  Published：2012
- 稿件说明：
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WANG Liu-jiang, LIU Si-hong, WANG Jun-bo, et al. Numerical analysis of electroosmostic consolidation based on coupled electrical field-seepage field-stress field[J]. 2012, 33(6).
DOI：

WANG Liu-jiang, LIU Si-hong, WANG Jun-bo, et al. Numerical analysis of electroosmostic consolidation based on coupled electrical field-seepage field-stress field[J]. 2012, 33(6). DOI：

摘要

在非饱和土多孔介质力学理论的基础上，根据电荷守恒原理、质量守恒原理、应力平衡方程、达西定律以及欧姆定律，推导了考虑电场、渗流场以及应力场相互耦合作用的电渗固结理论方程。采用Galerkin加权余量法对电渗固结理论方程进行空间离散，得到其有限元计算列式，编制了相应的计算程序，对室内电渗模型试验进行了数值模拟。结果表明，数值模拟与试验结果基本吻合，表明该电渗固结理论方程能够定量预测电渗固结过程中土体的孔隙水压力和位移发展规律。

Abstract

Based on the mechanical theory of unsaturated porous media

an equation of electroosmostic consolidation theory which considers the coupling of electrical field

seepage field and stress field is derived by applying the principles of charge and mass conservation

stress equilibrium equation

Darcy’s law and Ohm’s law. The equation is discretized by using the Galerkin method of weighted residuals to get the formulation for finite elements; and then a code is developed. A model test of the electroosmosis combining with vacuum drainage is simulated. The simulated results agree well with the measured ones; it is shown that the proposed theory can predict the development of pore water pressure and displacements quantitatively in the electroosmosis consolidation process.

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