CS3: Large Strain Consolidation Model for Layered Soils
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 140, Issue 8
Abstract
A numerical model, called CS3, is presented for one-dimensional, large strain consolidation of layered soils. The algorithm accounts for vertical strain, soil self-weight, conventional constitutive relationships, changing material properties during consolidation, unload/reload, time-dependent loading and boundary conditions, an externally applied hydraulic gradient, and multiple soil layers with different material properties. CS3 can accommodate equilibrium and nonequilibrium profiles for the initial void ratio as well as variable profiles for preconsolidation stress and applied stress increment. Verification checks show excellent agreement with available analytical and numerical solutions. Several numeric examples are used to illustrate the capabilities of CS3 and highlight errors that may occur when multilayer systems are modeled as a single layer with average properties. Finally, settlement estimates obtained using CS3 are in good agreement with field measurements for the Gloucester test fill.
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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. The authors also thank Dr. R. Kerry Rowe, Professor of the Department of Civil Engineering at Queen’s University, for providing additional information about the Gloucester test fill.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 140 • Issue 8 • August 2014
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© 2014 American Society of Civil Engineers.
History
Received: Sep 1, 2012
Accepted: Feb 25, 2014
Published online: Apr 28, 2014
Published in print: Aug 1, 2014
Discussion open until: Sep 28, 2014
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