岩土力学Issue(8)：2181-2188,8.
基于非达西渗流的软土一维非线性固结半解析解
Semi-analytical solution of one-dimensional nonlinear consolidation with non-Darcian flow
摘要
Abstract
Based on the non-Darcian flow in soft soil and nonlinearity during the process of consolidation, the governing equation of one-dimensional nonlinear consolidation was derived according to continuity condition of one-dimensional consolidation. Solutions for this question were obtained by adopting a semi-analytical method, and were verified by comparing with the results by finite difference method. Finally, the difference of consolidation behavior between non-Darcian flow and Darcy’s law and influence of distribution types of dead-weight stress on consolidation rate were emphatically analyzed. The results show that the rate of nonlinear consolidation will be slowed down when non-Darcian flow is considered; and the larger the exponent and threshold hydraulic gradient are, the slower the rate of nonlinear consolidation is. Furthermore, this retardation of nonlinear consolidation with non-Darcian flow will be more noticeable with an increase of thickness of soil layer and a decrease of external loading. The rate of nonlinear consolidation with linear distribution of dead-weight stress is faster than that with uniform distribution; and the difference between them will diminish with increasing the external loading and decreasing the thickness of a soil layer.关键词
非达西渗流/非线性固结/自重应力沿深度线性变化/半解析法Key words
non-Darcian flow/nonlinear consolidation/linear change of dead weight stress with depth/semi-analytical method分类
建筑与水利引用本文复制引用
李传勋,谢康和..基于非达西渗流的软土一维非线性固结半解析解[J].岩土力学,2013,(8):2181-2188,8.基金项目
国家自然科学基金资助（No.51109092）；中国博士后科学基金面上项目资助（No.2013M530237）；江苏大学高级人才启动基金资助（No.12JDG098）。 （）
