路基工程Issue(6)：70-73,4.
考虑土体渗透性径向变化的砂井地基数值模拟分析
Numerical Simulation of Sand Drains Foundation with a Consideration of Permeability Coefficient Changing along the Radial Direction
摘要
Abstract
The permeability of soil is an important factor which affects sand drain foundation consolidation. To analyze the consolidation behavior of sand drain foundation under complex conditions, user subroutine is programmed in ABAQUS to set up a numeric calculation model of sand drain foundation consolidation whose permeability coefficient changes along the radial direction. The pore pressure distribution and consolidation behavior during the process of consolidation are also analyzed. The results show that the changes of permeability coefficient along the radial direction have a big effect on the consolidation behavior of sand drain foundation. When assuming the permeability coefficient of smear zone constant, the degree of consolidation is slowest. When assuming the permeability coefficient of smear zone changes in shape of a parabola, the degree of consolidation is fastest. When assuming the permeability coefficient of smear zone changes in a linear fashion, the degree of consolidation is between the degrees of two situations above. Besides, the consolidation behavior of sand drain foundation is also affected by drainage condition and soil properties.关键词
用户子程序/渗透性/砂井地基/数值模拟Key words
User subroutine/Permeability/Sand Drains Foundation/Numerical Simulation分类
建筑与水利引用本文复制引用
李文翔..考虑土体渗透性径向变化的砂井地基数值模拟分析[J].路基工程,2012,(6):70-73,4.基金项目
国家自然科学基金项目 （）
科技部科技基础性工作专项重大项目 （）
