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本文通过两个状态边界面的概念,并利用正常压密粘土典型的规格化性状,建立了描述土的应力应变关系的一个非线性模型。该模型既能反映土的应力应变非线性,又能反映球应力和偏应力对应变的交叉影响。并引出了描述土的变形特性的四个模量的概念,认为用四个模量描述土的应力应变关系是合理的。
In this paper, a nonlinear model describing the stress-strain relationship of soil is established by using the concept of two state boundary surfaces and using the typical normalized properties of normal compacted clay. The model can not only reflect the nonlinear stress and strain of soil, but also reflect the cross effect of the corresponding change of the ball stress and deviatoric stress. The concept of four moduli describing the deformation characteristics of soil is derived. It is considered that the use of four moduli to describe the stress-strain relationship of soil is reasonable.