岩土力学2011，Vol.32Issue(1)：281-287,7.
基于非牛顿指数描述的非达西渗流一维固结分析
Analysis of one-dimensional consolidation with non-Darcy flow described by non-Newtonian index
摘要
Abstract
Based on the non-Darcy flow described by non-Newtonian index, the theory of one-dimensional consolidation is modified to consider a linear variation in the additional stress with depth and the effect of time-dependent loading.The numerical solutions are derived in detail by FDM for pore water pressure and the average degree of consolidation.The influence of various parameters on consolidation behavior is investigated.The results show that the rate of consolidation is reduced when non-Darcy flow is considered; furthermore, the greater the non-Newtonian index, the slower the rate of consolidation.The greater the thickness of a soil layer, the slower the rate of consolidation.Thus, the classical similitude with non-Darcy flow between laboratory samples and field layers is no longer satisfied.The greater the value of the additional stress in a foundation, the faster the rate of consolidation.The distribution of additional stress has a great influence on the rate of consolidation for the case of single drainage condition; on the contrary, the rate of consolidation is independent of the distribution of additional stress for the case of double drainage condition.The faster the loading rate, the faster the consolidation rate.Finally, applicability of Darcy's flow to consolidation deformation is discussed.关键词
非达西渗流/非牛顿指数/一维固结/变荷载分类
交通工程引用本文复制引用
李传勋,谢康和,卢萌盟,王坤..基于非牛顿指数描述的非达西渗流一维固结分析[J].岩土力学,2011,32(1):281-287,7.基金项目
国家自然科学基金资助(No.50878191). （No.50878191）
