A Modified Bounding Surface Hypoplasticity Model for Sands

摘要：

　　A modified bounding surface hypoplasticity model is developed to capture distinct dilatancy behaviors of sandy soils during various phases of cyclic loading.The model features a new modulus formulation,a phase transformation surface that is dependent on a state variable and soil density.The effects of accumulated plastic strains on the plastic moduli are also considered.The modified model improves simulation of cyclic mobility and post-liquefaction behavior of both loose and dense sands.The model capacity is demonstrated by comparing the model simulations with a series of undrained cyclic simple shear tests on Fraser River sand.

关键词： constitutive model bounding surface hypoplasticity cyclic response

作者: Gang Wang Yongning Xie

作者单位: Department of Civil and Environmental Engineering Hong Kong University of Science and Technology Clearwater Bay,Kowloon,Hong Kong SAR,China

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: 231-237

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）