Nonlinear Stress-Strain Relationship of Soil Reinforced with Flexible Geofibers
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 132, Issue 6
Abstract
A nonlinear stress-strain relationship of soil reinforced with flexible geofibers under static loading is derived based on a nonlinear elastic stress-strain relationship of soil and a linear elastic stress-strain relationship of geofibers in the paper. This investigation includes the following aspects: First, the homogenization technique is introduced to find the volume average stress tensor and volume average strain tensor and further an elastic incremental stress-strain relation is introduced to describe deviatoric shear stress-axial strain relationship of equivalent homogeneous geofiber-reinforced soil. Second, the relation of geofiber numbers, content, mechanical behavior, distribution, and geometrical features to shear modulus of geofiber-reinforced soil is expressed and assessed by employing an elastic energy method. Third, the deviatoric shear stress and axial strain curves of geofiber-reinforced soil are calibrated by laboratory testing data of geofiber reinforced soil samples. Finally, the theoretical computational curves of geofiber reinforced soil are compared with the curves calibrated by testing data of geofiber reinforced soil. The model prediction has a good agreement with experimental results.
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Acknowledgments
The writers are grateful to the National Transportation Center at Morgan State University for the constant support and partnership in research.
References
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© 2006 ASCE.
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Received: Jan 6, 2005
Accepted: Nov 16, 2005
Published online: Jun 1, 2006
Published in print: Jun 2006
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