饱和土体一维固结理论的修正——饱和多孔介质流固耦合渗流模型之应用  

A modified form for the uniaxial consolidation theory in saturated soils——An application of mathematical models for flow-deformation coupling in saturated porous media

作　　者：李培超[1] 李贤桂 卢德唐[3] 

机构地区：[1]上海工程技术大学机械工程学院,上海201620 [2]创生医疗器械(中国)有限公司,江苏常州213164 [3]中国科学技术大学近代力学系,安徽合肥230027

出　　处：《中国科学技术大学学报》2010年第12期1273-1278,共6页JUSTC

基　　金：上海高校选拔培养优秀青年教师科研专项基金(GJD09029);上海工程技术大学科技发展基金(校启09-27);上海市重点学科建设项目(P1401)资助

摘　　要：针对饱和土体一维固结沉降问题,以饱和多孔介质流固耦合渗流模型为基础,推导给出一个新的固结方程.然后与经典固结理论进行了定性的对比分析,并对某软土地基沉降工程实例进行了定量计算和阐述.研究结果表明,经典固结方程可认为是所提出的固结方程的简化和近似,后者更能反映固结过程土体的真实性状,其结果与前者比较更加接近于实际.On the basis of mathematical models for hydro-mechanical coupling in saturated porous media,the uniaxial consolidation equation was obtained.It was then compared qualitatively with the traditional consolidation equation and illustrated quantitatively by means of one case of soft clay foundation settlement.It turns out that the traditional one can be regarded as a particular case of the modified one. The latter can more rigidly reflect the physical characteristics of soil in the process of consolidation,which makes its result much closer to the reality than that of the former.

关 键 词：有效应力原理 流固耦合 固结系数 沉降量 孔压消散 

分 类 号：TU46[建筑科学—结构工程]