岩土工程学报2011，Vol.33Issue(7)：1117-1122,6.
一维软土地基非达西流固结分析
One-dimensional consolidation of soft ground considering non-Darcy flows
摘要
Abstract
The flows of pore water in the soil and drainge boundaries have great influence on the dissipation of excess pore pressures.Based on the non-Darcy flows suggested by Hansbo described by the power function for the lower velocity of flows and the linear function for higher velocity of flows,finite element formulations are derived by Galerkin＇s weighting residual method for one-dimensional consolidation of ground with impeded boundaries.A program is developed based on the finite element formulations.The existing one-dimensional consolidation explicit analytical solution based on the Darcy flows of the ground with partially drained boundaries is used to verify the validity of the present method and correctness of the program.Then the one-dimensional consolidation behavior of ground with impeded boundaries based on the non-Darcy flows is investigated.The numerical results indicate that partially drained boundaries parameter Rt=200 can be thought as conventional pervious boundaries.There is a boundary depth for the non-Darcy flow consolidation under impeded boundaries.The pore pressures of the soil above the boundary depth dissipate more quickly than those of Darcy flows,whereas pore pressures of the soil below the boundary depth dissipate more slowly than those of Darcy flows.Boundary depth becomes deep with the increase of m,however it becomes shallow with the increase of i1.关键词
一维固结/半透水边界/非达西流/有限元Key words
one-dimensional consolidation/impeded boundary/non-Darcy flow/finite element分类
建筑与水利引用本文复制引用
刘加才,雷国刚,王育新..一维软土地基非达西流固结分析[J].岩土工程学报,2011,33(7):1117-1122,6.基金项目
国家自然科学基金项目 （）
