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基于室内不排水动三轴试验,研究了5种因素,即围压、超固结比、偏压固结比、动剪应力比、加载频率等对饱和黄土动力特性的影响。本文强调了结构性在饱和黄土动力特性研究中的重要性,结构性的破坏是影响土体动力力学特性的一个重要转折点。并阐明了用塑性残余变形来表征土体内部结构的变化并以此作为孔压增长函数自变量的合理性。
Based on the undrained triaxial test in laboratory, five factors were studied, including confining pressure, overconsolidation ratio, biasing consolidation ratio, dynamic shear stress ratio and loading frequency on the dynamic characteristics of saturated loess. This paper emphasizes the importance of structural properties in the dynamic behavior of saturated loess. Structural failure is an important turning point that affects the dynamic properties of soil. It is also demonstrated that the plastic residual deformation can be used to characterize the change of the internal structure of the soil and use it as the rationality of the independent variable of pore pressure increasing function.