强夯加固饱和地基土的数值模拟  

Numerical simulation on saturated soil with dynamic compaction method

作　　者：周世良[1] 庞博[1] 郑红娟[1] 

机构地区：[1]重庆交通大学河海学院,重庆400074

出　　处：《水运工程》2009年第4期140-146,共7页Port & Waterway Engineering

基　　金：重庆市教委科技项目(040406);重庆市水利水运工程重点实验室开放基金(SLK2006A04)

摘　　要：综合分析国内外有关饱和地基土强夯加固研究资料的基础上,考虑强夯作用下饱和土的流固耦合特性、土体非线性、强夯处理大变形理论,利用多孔介质模型,推导出有限元动力平衡方程,对强夯处理饱和地基土进行数值模拟,得到夯坑变形、流场分布、孔隙水压力分布等情况,为精确模拟分析强夯加固机理提供有效途径。Based on the synthetic analysis of relevant information of saturated soil consolidation with dynamic compaction method,considering the powerful bond action between the liquid and soil,nonlinear character of soil,large deformation theory of dynamic compaction,and using porous media model,the dynamic balance equation on finite element method was deducted.Through numerical simulation of the dynamic consolidation process,the ramming hole deformation,flow field distribution,and pore water pressure distribution were obtained,which offer an effective path for precise simulation and analysis of the consolidation mechanism.

关 键 词：强夯 饱和土 流固动力耦合 弹塑性大变形 数值模拟 

分 类 号：TU472.3[建筑科学—结构工程]