Enhanced CS2 Model for Large Strain Consolidation
Publication: International Journal of Geomechanics
Volume 12, Issue 5
Abstract
Since original publication in 1997, the CS2 numerical model has been widely used for consolidation analysis and has formed the basis for several more advanced consolidation models. In this paper, an enhanced version of the CS2 model is presented along with simulations to illustrate its new capabilities. The algorithm includes features of the original model with the addition of time-dependent loading, an external hydraulic gradient, and unload/reload effects. Verification checks show excellent agreement with analytical solutions for time-dependent loading under small strain conditions. A variety of numerical examples indicates that the new capabilities describe important considerations for consolidation analysis. The simulations also indicate that failure to correctly account for compressibility and hydraulic conductivity constitutive relationships and self-weight of the soil in particular can lead to significant errors.
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Acknowledgments
Financial support for this investigation was provided by Grant No. CMMI-1001023 from the Geotechnical Engineering Program of the U.S. National Science Foundation. This support is gratefully acknowledged.
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Information
Published In
International Journal of Geomechanics
Volume 12 • Issue 5 • October 2012
Pages: 574 - 583
Copyright
© 2012 American Society of Civil Engineers.
History
Received: Mar 10, 2011
Accepted: Aug 10, 2011
Published online: Aug 12, 2011
Published in print: Oct 1, 2012
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