各向异性主要包含了固有各向异性（inherent anisotropy）和应力诱发各向异性（induced anisotropy）， 前者由土骨架的结构各向异性所产生，后者由初始不 等向应力状态引起。
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数值模拟结果表明，该模型能有效地描述岩土材料的固有各向异性。
Numerical simulation results show that the inherent anisotropy of geotechnical material can be efficiently described with the model.
给出了岩土材料的一种各向异性模型，并用一个各向异性参数来描述岩土材料的固有各向异性。
A model of anisotropy for geotechnical material is presented. The inherent anisotropy of this kind of material is described with an anisotropy parameter.
用提出的模型对一些试验进行了模拟，结果表明该模型能有效地描述沉积岩的固有各向异性及其时间效应。
Several triaxial tests are simulated with the presented model, the results show the inherent anisotropy and time-dependent behavior in sedimentary rocks can be efficiently described with the model.
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