Triaxial experiments were performed to study the mechanical behavior of fissured loess. The experimental results showed that confining pressure and fissure dip each yield influence on the mechanical characteristics of loess. As the confining pressure increased, the peak strength of fissured loess was found to consistently increased; conversely, the increasing trend differed for samples with various fissure dips. Additionally, the stress–strain relationship of fissured loess was analyzed via a double parameter binary-medium model. This model was designed based on the homogenization theory and regarded fissured loess as a composite material comprising loess matrix elements and fissure elements. The Duncan–Chang hyperbolic model and modified Cam-Clay model were employed to describe the stress–strain relationship of loess matrix elements and fissure elements, respectively. The fitting results demonstrate that this model is suitable for modeling fissure development in loess.
Engineering Geology – Elsevier
Published: Mar 26, 2018
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