考虑渗流起始比降的三维固结方程及数值模拟研究  

Three Dimensional Consolidation and Numerical Simulation Consdering Initial Slope Seepage

作　　者：刘飞乐 陈超核[2] 

机构地区：[1]海南大学土木建筑工程学院,海南海口570228 [2]华南理工大学土木与交通学院,广东广州510006

出　　处：《海南大学学报（自然科学版）》2014年第2期147-151,共5页Natural Science Journal of Hainan University

基　　金：国家自然科学基金(51049010)

摘　　要：将非达西定律引入到饱和土的Biot三维固结方程,建立了考虑起始比降的三维固结方程,同时采用空间8节点等参单元,得到了考虑起始比降的三维固结的数值方程式,并在此基础上构建了有限元渗流模型,根据数值计算结果得出考虑起始比降的三维固结方程,该方程可以很好地反映起始比降对孔隙水压力消散以及平均固结度的影响,与文献[8]的试验结果相吻合.In the report,non-Darcy law was introduced into Biot three-dimensional consolidation equation of saturated soils,three-dimensional gradient consolidation equation considering starting gradient ratio was deduced.Space eight-node isoparametric element was used to obtain the three-dimensional consolidation numerical equation considering starting gradient ratio,on which the finite element seepage model was constructed. The model reflected the initial slope of the dissipation of pore water pressure and average consolidation degree very well,and the results are agreement with that of literature[8].

关 键 词：三维固结 非达西定律 起始比降 

分 类 号：TU352.1[建筑科学—结构工程]