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对饱和黄土试样进行不排水三轴剪切试验,总结了围压、超固结比、偏压固结比对饱和黄土力学性能的影响规律。分析表明:饱和黄土的抗变形能力由两部分组成:一是结构性;二是颗粒间的摩擦。其中前者对初始变形模量的影响较大;而后者则对土体的残余不排水强度起决定作用。同时指出结构性在饱和黄土力学性能研究中的重要性。
The undrained triaxial shear tests on saturated loess samples were carried out. The influence of confining pressure, overconsolidation ratio and bias consolidation ratio on the mechanical properties of saturated loess was summarized. The analysis shows that the anti-deformation capacity of saturated loess consists of two parts: one is structural; the other is the friction between particles. Among them, the former has a great influence on the initial deformation modulus, while the latter has a decisive effect on the residual undrained strength of the soil. At the same time, it points out the importance of structure in the study of mechanical properties of saturated loess.