中文摘要：

从理论和实验两个方面对国内外主应力轴旋转情况下土的各向异性研究进行了对比和总结,并提出了一些研究建议。指出：在理论方面,应对屈服面方程采用应力分量表示的模型在三维空间里进行屈服面性状的描述,并考虑不同加载方向下屈服面的变化特性以及旋转硬化的问题;而实验方面,则应多以粘性土为研究对象,结合理论进行对加载方向变化时土体屈服面变化特性的实验研究以及旋转硬化规律的实验验证。

英文摘要：

From two aspects of theory and experimen,research on soil＇s anisotropy under principal stress rotation in home and abroad are compared and summarized,also some research suggestions are proposed.It is pointed out that in theory,the three-dimensional description for the yield surface of constitutive model,whose yield surface equation is expressed by stress components,should be well studied,and the change characteristics of yield surface under different load directions as well as rotational hardening should be taken into account.In experiment,the experimental subject should better be clay,and along with the theoretical research,the experimental study on the change characteristics of yield surfaces under different load directions and verification of the rotational hardening is worth looking into.