摘要
在混合物理论的框架内，提出了一个处理饱和与非饱和的岩土类材料变形和强度本构建模的新方法。该方法将多相工程材料看成由两个层次的三种混合物模型组成。针对非饱和岩土类材料的特点，应用该方法，给出了一个具体的弹塑性损伤本构方程，可描述材料性质的劣化过程（即损伤和软化）以及非饱和程度对材料变形强度特性的影响，并编制了专用的有限元程序。作为算例，对常规三轴试件进行了有限元分析，得出了一些具体的结果。
In the frame of the Theory of Mixtures, the paper proposed and developed a new method for the constitutive modelling of saturated and unsaturated porous media. In the new model, realistic porous media is viewed as three kinds of mixtures within two levels. In order to simulate the degradation and softening properties of geomaterials, an elasto plastic damage model is also proposed, which, in addition, can also take into account of the influence of unsaturation on the overall properties of geomaterials. As an example, finite element analysis is performed to simulate the deformation and strength properties of a conventional triaxial specimen.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1998年第5期58-63,共6页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金
关键词
非饱和
岩土类材料
混合物理论
弹塑性损伤模型
unsaturated geomaterials, mixture theory, constitutive modelling, elasto plastic damage model, FE implementation and application.
