Constitutive Modeling for Overconsolidated Clays Based on Disturbed State Concept. II: Validation
Publication: International Journal of Geomechanics
Volume 19, Issue 9
Abstract
The disturbed state concept (DSC)-based model for overconsolidated clay was proposed mainly in a previous paper that aims to analyze the influences of the model parameters on model predictions, calibrations of the model parameters, and the model validation through different overconsolidated clays. It is found that the disturbance parameter in the model predictions can greatly influence the evolution of stress, volumetric strain, undrained shear strength, and excess pore pressure with axial strain. Detailed calibrations of the model parameters, such as the disturbance parameter, potential-failure and dilatancy parameters, and plastic modulus parameters, are introduced. The comparison results demonstrate that the DSC-based model predictions are in good agreement with the test data of different overconsolidated clays on strain softening and volumetric expansion under the drained condition, as well as the evolution of undrained shear strength and excess pore pressure during the undrained shearing process.
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Acknowledgments
The authors would like to acknowledge financial support from the 111 Project (Grant B13024), the National Natural Science Foundation of China (Grant 51678094, 51509024, and 51578096), and the China Postdoctoral Science Foundation (Grant 2017T100681).
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Published In
International Journal of Geomechanics
Volume 19 • Issue 9 • September 2019
Copyright
© 2019 American Society of Civil Engineers.
History
Received: Jan 4, 2018
Accepted: Mar 15, 2019
Published online: Jun 18, 2019
Published in print: Sep 1, 2019
Discussion open until: Nov 18, 2019
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