Testing and Modeling of Soil-Structure Interface
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 130, Issue 8
Abstract
An accurate modeling of soil-structure interfaces is very important in order to obtain realistic solutions of many soil-structure interaction problems. To study the mechanical characteristics of soil-structure interface, a series of direct shear tests were performed. A charged-coupled-device camera was used to observe the sand particle movements near the interface. It is shown that two different failure modes exist during interface shearing. Elastic perfect-plastic failure mode occurs along the smooth interface, while strain localization occurs in a rough interface accompanied with strong strain-softening and bulk dilatancy. To describe the behavior of the rough interface, this paper proposes a damage constitutive model with ten parameters. The parameters are identified using data from laboratory interface shear tests. The proposed model is capable of capturing most of the important characteristics of interface behavior, such as hardening, softening, and dilative response. The interface behaviors under direct and simple shear tests have been well predicted by the model. Furthermore, the present model has been implemented in a finite element procedure correctly and calculation results are satisfactory.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 130 • Issue 8 • August 2004
Pages: 851 - 860
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Dec 20, 2000
Accepted: Oct 6, 2003
Published online: Jul 15, 2004
Published in print: Aug 2004
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