Double parameter binary-medium model of fissured loess

Double parameter binary-medium model of fissured loess 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Engineering Geology Elsevier

Double parameter binary-medium model of fissured loess

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0013-7952
eISSN
1872-6917
D.O.I.
10.1016/j.enggeo.2017.09.014
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Engineering GeologyElsevier

Published: Mar 26, 2018

References

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