基于SMP准则的上海软土本构模型

A constitutive model of Shanghai soft clay based on SMP criterion

摘要: 根据上海典型软土的真三轴排水试验,文章提出了基于SMP(Spatially Mobilized Plane,空间滑动面)准则的平面上的形状函数,通过试验结果对形状函数进行了验证;提出基于SMP准则的上海软土的新的屈服函数,并与剑桥模型、关口-太田模型进行了理论比较,结果表明新的屈服函数能更好地反映屈服面的空间形态。

Abstract: Based on the tests’ results of true tri-axial apparatus,the shape function of yield locus on-plane is presented,which is based on the SMP criterion.The shape function is verified through experiments.A yield function based on SMP criterion is also presented.A theoretical compare is made among the new yield function,the Cambridge model and the Ohta-Sekiguchi model.The new yield function is proved to be better to reflect the space shape of the yield plane.