New Insight into Developing Mathematical Models for Predicting Deformation-Dependent Lateral Earth Pressure
Publication: International Journal of Geomechanics
Volume 17, Issue 8
Abstract
All existing mathematical models for predicting deformation-dependent lateral earth pressure assume the at-rest state as the turning point for the relationship between lateral earth pressure and soil deformation. However, this assumption lacks rigorous consideration of the physical meaning of the turning point. In this study, the physical implications of the turning point in a general relationship between lateral earth pressure and soil deformation are analyzed. A simple hyperbolic model is subsequently developed and then validated using experimental results from plane strain loading tests. It is found that it is more appropriate to take the isotropic stress state as the turning point, because the principal stress orientation begins to rotate at this point. This finding is helpful and constructive for developing mathematical models that predict deformation-dependent lateral earth pressure. The proposed simple hyperbolic model can be used to describe well the measured nonlinear relationship between lateral earth pressure and soil deformation.
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Acknowledgments
The authors acknowledge the financial support from Research Grants 51322807 and 51578196 provided by the National Natural Science Foundation of China, Research Grant 2016A030310368 provided by Guangdong Provincial Department of Science and Technology, and Research Grant JCYJ201513155231754 provided by the Shenzhen Science and Technology Innovation Commission.
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Published In
International Journal of Geomechanics
Volume 17 • Issue 8 • August 2017
Copyright
© 2017 American Society of Civil Engineers.
History
Received: May 26, 2016
Accepted: Dec 16, 2016
Published online: Mar 9, 2017
Published in print: Aug 1, 2017
Discussion open until: Aug 9, 2017
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