Rotational Hardening and Uniqueness of Critical State Line in Clay Plasticity

摘要：

　　Rotational Hardening (RH) is the constitutive ingredient of clay plasticity models which allows the description of more realistic response than typical isotropic models under various loading conditions,and in particular under Ko consolidation,where isotropic models fail to capture the correct K0 value.Additional restrictions must be imposed to prevent excessive rotation when loaded at very high stress ratios.One important aspect of a RH law is its ability to obtain a unique critical state line (CSL) in the e-p space,while maintaining a realistic response before critical state failure.Some RH laws are critically examined and a novel proposition is outlined.

作者: Mahdi Taiebat Yannis F.Dafalias

作者单位: The University of British Columbia,Vancouver,BC,Canada University of California,Davis,CA,USA and National Technical University of Athens,Zographou,Greece

会议类型: 国际会议

会议名称: The Second International Symposium on Constitutive Modeling of Geomaterials: Advances and New Applications (第二届国际岩土本构模型研讨会(IS-Model 2012))

会议地点: 北京

会议语种:英文

页码: 223-230

在线出版日期: 2012-10-15（万方平台首次上网日期，不代表论文的发表时间）