One-dimensional electroosmosis consolidation model considering variable saturation
ZHOU Ya-dong1, 2, DENG An3, LIU Zhong-xian1, 2, YANG Ai-wu1, 2, ZHANG Hai1, 2
1. Key Laboratory of Soft Soils and Engineering Environment of Tianjin, Tianjin 300384, China; 2. Department of Civil Engineering, Tianjin Chengjian University, Tianjin 300384, China; 3. The University of Adelaide, Adelaide 5005, Australia
Abstract：The existing models for electroosmosis are based on the hypothesis of fully saturated soil regime. Variable saturation occurs in the soil regime, thus a new model is expected to improve the calculation accuracy. This study proposes a numerical model, UEC1, for one-dimensional electroosmosis consolidation considering variable saturation. This model employs piecewise linear finite difference method to account for the nonlinear variation of physical and electro-chemical soil properties caused by the large deformation occurring during the consolidation. The FORTRAN programming package is used to implement the computation of the model. An excellent agreement is obtained between the UEC1 and test results. This model is applied to example studies to demonstrate the consolidation progress of partially saturated soils. The numerical calculations indicate that the residual saturation degree has significant influence on soil settlement.
周亚东, 邓安, 刘中宪, 杨爱武, 张海. 考虑饱和度变化的一维电渗固结模型[J]. 岩土工程学报, 2017, 39(8): 1524-1529.
ZHOU Ya-dong, DENG An, LIU Zhong-xian, YANG Ai-wu, ZHANG Hai. One-dimensional electroosmosis consolidation model considering variable saturation. Chinese J. Geot. Eng., 2017, 39(8): 1524-1529.
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