A nonlinear consolidation model of soft clay under the combination of electroomosis and vacuum preloading
ZHOU Yadong1，FU Jiyu1，DENG An2，CHAI Shouxi1
(1. Key Laboratory of Soft Soil Engineering Characteristics and Engineering Environment of Tianjin，Tianjin Chengjian University，Tianjin 300384，China；2. The University of Adelaide，Adelaide 5005，Australia)
Abstract：Based on the piecewise linear difference method，a new model of simulating the large strain consolidation of soft clay under the combination of electroomosis and vacuum preloading was developed. The model considers soil nonlinearity and was implemented using FORTRAN. The model was validated by the small strain analytical approach and large strain experiment. The modelling results agree with the analytical solutions and the experimental results. A parametric study was conducted to examine the effects of different combinations of vacuum preloading and electroosmosis. The results show that the combined method outperformed the single-process method. The final average settlements of the soil under varied combinations of vacuum preloading and electroosmosis are approximate. The process of applying the electric field after the surcharge preloading can reduce energy consumption. Further energy reduction can be obtained by confining the degree of consolidation within 80%.
周亚东1，付继宇1，邓 安2，柴寿喜1. 真空预压–电渗联合作用下软黏土非线性大变形固结模型[J]. 岩石力学与工程学报, 2019, 38(8): 1677-1685.
ZHOU Yadong1，FU Jiyu1，DENG An2，CHAI Shouxi1. A nonlinear consolidation model of soft clay under the combination of electroomosis and vacuum preloading. , 2019, 38(8): 1677-1685.
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2019, Vol. 38 
