| Civil Engineering |
|
|
|
|
| One-dimensional nonlinear consolidation of soft clay with the non-Darcian flow |
| Chuan-xun Li, Kang-he Xie |
| Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China; Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China |
|
|
|
Abstract Based on the non-Darcian flow law described by exponent m and threshold gradient i1 under a low hydraulic gradient and the classical nonlinear relationships e-lgσ′ and e-lgkv (Mesri and Rokhsar, 1974), the governing equation of 1D nonlinear consolidation was modified by considering both uniform distribution of self-weight stress and linear increment of self-weight stress. The numerical solutions for the governing equation were derived by the finite difference method (FDM). Moreover, the solutions were verified by comparing the numerical results with those by analytical method under a specific case. Finally, consolidation behavior under different parameters was investigated, and the results show that the rate of 1D nonlinear consolidation will slow down when the non-Darcian flow law is considered. The consolidation rate with linear increment of self-weight stress is faster than that with uniform distribution one. Compared to Darcy’s flow law, the influence of parameters describing non-linearity of soft soil on consolidation behavior with non-Darcian flow has no significant change.
|
|
Received: 14 December 2012
Published: 03 June 2013
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
