摘要
将椭圆－抛物线双屈服面模型与修正的Ｋｏｒｍａｎｕｒａ－Ｈｕａｎｇ模型结合起来，提出一种粘弹－粘塑性本构模型；通过室内三轴试验测定其参数，再用于排水预压软基的三维有限元分析。计算结果与工地实测结果吻合，证明所提本构模型和分析方法是合理的和有效的。
he elastoplastic model with two elliptic-parabolic yield surfaces is combined with Modified Kormunura-Huang's Model and a new viscoelastic/viscoplastic constitu-tive model is presented in this paper.With its parameters obtained from laboratory triaxial test,the new mode is used for 3-D FEM analysis of soft foundation with drainage preloading.the good agreement in comparison of computed results with field measurements demonstrates the reasonableness and efficiency of the new constitutive modeland the analysis method.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1995年第5期1-7,共7页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金
关键词
软土地基
排水预压法
有限元
弹性
塑性
viscoelasticity-viscoplasticity constitutive model drainage preloading method 3-D FEM analysis
