RCONSTITUTIVE MODELING OF KAOLIN CLAY UNDER UNDRAINED AND DRAINED CONDITION

摘要：

This paper presents the results of an experimental study of the stress-strain behavior of a normally-consolidated, saturated Kaolin clay in triaxial compression tests under undrained and drained conditions. Results of undrained tests have consistently shown existence of the softening part in the deviatoric stress-strain diagram at high strains. This feature of the observed undrained response of a normally-consolidated clay can not be modeled using conventional Cam-clay models (e.g., standard or modified Cam-Clay). This paper suggests a constitutive elasto-plastic non-associative model based on the critical state concept with minimum modification which allows to predict undrained and drained experimental results, in particular the deviatoric stress peak in the undrained stress-strain response.

作者: Jian Hu Dayakar Penumadu Dmitry I.Garagash

作者单位: GeoEngineers, Inc.8410 154th Avenue NE, Redmond, WA 98052 Department of Civil and Environmental Engineering, University of Tennessee,Knoxville, TN 37996 Civil and Environmental Engineering Department, Clarkson University,Potsdam, NY 13699

会议类型: 国际会议

会议名称: 第二届国际应力-水流-热-化学耦合学术大会(2nd International Conference on Coupled Thermo-Hydro-Mechanical Processes in Geosystems and Engineering：Geoproc2006)

会议地点: 南京

会议语种:英文

页码: 593-598

在线出版日期: 2006-05-22（万方平台首次上网日期，不代表论文的发表时间）