Modified Bounding Surface Hypoplasticity Model for Sands under Cyclic Loading
Publication: Journal of Engineering Mechanics
Volume 140, Issue 1
Abstract
A modified bounding surface hypoplasticity model is developed to capture distinct dilatancy behaviors of loose and dense sandy soils during various phases of undrained cyclic loading. Based on observations from laboratory tests, new modulus formulations are proposed to improve the simulation of cyclic mobility and postliquefaction behaviors of both loose and dense sands. The state-dependent dilatancy and effects of accumulated plastic strains on the plastic moduli are also incorporated in this model. The model demonstrates excellent capabilities through systematic comparison between the model predictions and a series of undrained cyclic simple shear tests on Fraser River sand.
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Acknowledgments
The authors thank Dr. Zhi-Liang Wang for his many insightful discussions during the course of this study. Financial support from Research Project Competition (UGC/HKUST) Grant No. RPC11EG27 and Hong Kong Research Grants Council Grant No. RGC 620311 is gratefully acknowledged.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 140 • Issue 1 • January 2014
Pages: 91 - 101
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Jul 2, 2012
Accepted: Apr 3, 2013
Published online: Apr 5, 2013
Published in print: Jan 1, 2014
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