关于破坏准则和屈服函数的总结

Summary on the Failure Griteria and Yield Functions

本文对３０多年来建议过的有关π平面和子午面的各种破坏准则和屈服函数的表达式进行分类和归纳，并认为继续进行这类问题的研究已经没有必要。

In this paper a double hardening model with two hardening parameters(i.e.plastic volumetric strain and shear strain) and a single smooth yield function has been proposed.The model is characterized by its simplicity in determination of soil constants and adaptation for a variety of stress paths.Its yield locus not only can enlarge or contract,but also can change the shape in the successive yielding,and its ability to simulate the stress-strain behaviour both for normally consolidated and overconsolidated clays is demonstrated through comparison of computed results with experimental data of clay samples under 3 typical stress paths.