岩土工程学报2012，Vol.34Issue(11)：2058-2065,8.
考虑非达西渗流的比奥固结有限元分析
Finite element analysis of Biot's consolidation with non-Darcian flow
摘要
Abstract
Based on the classic Biot's consolidation theory,the consolidation equation considering non-Darcian flow is set up and then solved numerically with the aid of the finite element method.Firstly,the well-known Hansbo's non-Darcian flow model is incorporated and the selection of the input parameters is analyzed correspondingly.Then,with a further simplification of the hydraulic gradient combining with the flow continuity condition and the force equilibrium condition,the governing equations for the Biot's general consolidation theory with non-Darcian flow are formulated.Based on this,the finite element formulations for the spatial eight-node block element are deduced by means of the weighted residual method.A program considering the effect of the non-Darcian flow is developed based on an existing procedure correspondingly.With this modified program,the obtained governing equations can be solved numerically.Finally,the reliability of the numerical method is verified against the established theoretical solutions.The results show that(1) the difference of the calculated results for the two methods increases with the increase of the non-Darcian flow parameters,and the maximum difference is smaller than 10%;(2) the consolidation rate will slow down when considering the effect of non-Darcian flow,and this effect is significant when the property of the non-Darcian flow is apparent.关键词
Biot固结理论/非达西流/有限元法/加权残数法Key words
Biot's consolidation theory/non-Darcian flow/finite element method/weighted residual method分类
建筑与水利引用本文复制引用
邓岳保,谢康和,李传勋..考虑非达西渗流的比奥固结有限元分析[J].岩土工程学报,2012,34(11):2058-2065,8.基金项目
国家自然科学基金项目 （）
