同济大学学报（自然科学版）2012，Vol.40Issue(4)：541-548,8.DOI:10.3969/j.issn.0253-374x.2012.04.007
考虑非Darcy渗流和自重应力的一维固结分析
One-dimensional Consolidation with a Consideration of Non-Darcy Flow and Self-gravity Stress
摘要
Abstract
Based on the non-linear deformation of saturated clay and the non-Darcy flow in the soil, Terzaghi' s one-dimensional consolidation equation was modified and generalized by taking into account of the effects of the buried depth and self-gravity stress of soil layer. The effective stress was set as the dependent variable of the presented nonlinear consolidation equation, and a numerical analysis was made with the finite difference method. The effects of the parameters of the non-Darcy flow, the compressibility index of the soil, the buried depth and the self-gravity stress of soil layer on the consolidation process were investigated respectively. The numerical results indicated that both of the pore pressure dissipation rate and the settlement rate with a consideration of the self-weight stress of soil layer are greater than those without consideration. In addition, they are likely greater than the theoretical values of Terzaghi's theory in the early period of consolidation while possibly less in the following period when all the parameters are taken into account.关键词
土力学/饱和黏土/非线性固结/非达西渗流/有限差分法/固结度/初始有效应力Key words
soil mechanics/saturated clay/ non-linear consolidation/ non-Darcy flow/ finite difference method/degree of consolidation/ initial effective stress分类
建筑与水利引用本文复制引用
纠永志,刘忠玉,乐金朝,孙丽云..考虑非Darcy渗流和自重应力的一维固结分析[J].同济大学学报（自然科学版）,2012,40(4):541-548,8.基金项目
河南省教育厅自然科学研究计划(2010B560015) （2010B560015）
河南高速公路发展有限责任公司科技项目(2007GF009) （2007GF009）
