Coupled Continuum-Discrete Model for Saturated Granular Soils
Publication: Journal of Engineering Mechanics
Volume 131, Issue 4
Abstract
A coupled hydromechanical model was used to analyze the mesoscale pore fluid flow and microscale solid phase deformation of saturated granular soils. The fluid motion was idealized using averaged Navier–Stokes equations, and the discrete element method was employed to model the assemblage of solid particles. The fluid–particle interactions were quantified using established semiempirical relationships. Simulations were conducted to investigate the three-dimensional response of sandy deposits when subjected to critical and overcritical upward pore fluid flow. These simulations revealed complex response patterns after the onset of quicksand conditions and provided valuable insight into the associated mechanisms. The employed model provides an effective tool to assess the microscale mechanisms and characteristics of the partially drained response of saturated granular media.
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Acknowledgment
This research was supported by the National Science Foundation, Grant No. CMS-0084591. This support is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 131 • Issue 4 • April 2005
Pages: 413 - 426
Copyright
© 2005 ASCE.
History
Received: Jan 7, 2003
Accepted: Sep 9, 2004
Published online: Apr 1, 2005
Published in print: Apr 2005
Notes
Note. Associate Editor: Jin Y. Ooi
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