• ISSN 0258-2724
  • CN 51-1277/U
  • EI Compendex
  • Scopus
  • Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
  • Chinese S&T Journal Citation Reports
  • Chinese Science Citation Database
Volume 25 Issue 1
Mar.  2012
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Article Contents
LI Chuanxun, XIE Kanghe, HU Anfeng. Semi-analytical Solutions for One-Dimensional Consolidation of Layered Soil Obeying Exponential Flow Law[J]. Journal of Southwest Jiaotong University, 2012, 25(1): 84-89. doi: 10.3969/j.issn.0258-2724.2012.021.01.014
Citation: LI Chuanxun, XIE Kanghe, HU Anfeng. Semi-analytical Solutions for One-Dimensional Consolidation of Layered Soil Obeying Exponential Flow Law[J]. Journal of Southwest Jiaotong University, 2012, 25(1): 84-89. doi: 10.3969/j.issn.0258-2724.2012.021.01.014

Semi-analytical Solutions for One-Dimensional Consolidation of Layered Soil Obeying Exponential Flow Law

doi: 10.3969/j.issn.0258-2724.2012.021.01.014
  • Received Date: 30 Apr 2011
  • Publish Date: 25 Feb 2012
  • To calculate one-dimensional consolidation settlement of layered soil obeying an exponential flow law, an exponential flow law model was introduced into the classical consolidation theory for layered soil. The governing equation for one-dimensional consolidation of layered soil was established by considering the exponential flow law and time-dependent loading. A semi-analytical method combining the analytical method with numerical discretization was adopted to solve the governing equation. On condition that the exponential flow law is degenerated into the Darcy's flow law, the reliability of semi-analytical solutions was verified by comparing the results of the semi-analytical method with those of the analytical method. Finally, consolidation behaviors under different parameters were analyzed by combining with a case study of the consolidation of double-layered soil obeying an exponential flow law. The results show that it is simple and reliable to apply the semi-analytical method to the one-dimensional consolidation of layered soil obeying an exponential flow law; compared with the bottom soil layer, the flow exponent of upper soil layer has a great effect on the rate of consolidation; the consolidation rate increases with increasing the thickness of soil layer with low compressibility and high permeability; and the faster the loading rate, the faster the rate of consolidation.

     

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