Radial Consolidation Analysis Using Delayed Consolidation Approach
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 145, Issue 10
Abstract
The paper offers an analytical solution for radial consolidation that captures isotaches with a strain-rate dependency of preconsolidation pressure. These relationships are obtained based on constant-rate-of-strain (CRS) and long-term consolidation (LTC) tests and then used in the radial consolidation model incorporating the field strain rate, which is generally much lower compared with the typical laboratory environment. In this study, the calculated settlement and associated excess pore-water pressure are obtained using the equivalent preconsolidation pressure from the reference isotache within the domain. Moreover, the change in ratio (i.e., secondary compression index/compression index) with decreasing strain rate is used to calculate the long-term settlement. This method is then validated using various case histories in Australia and Southeast Asia, where excess pore-water pressure is dissipated at a slower rate in relation to the observed settlement.
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Acknowledgments
This research was supported by the Australian Government through an equivalent DECRA through the ARC Centre of Excellence in Geotechnical Science and Engineering (Project No. CE110001009). The first author would like to thank the Australian Research Council (ARC) Centre of Excellence in Geotechnical Science and Engineering (CGSE), Australian Research Council (ARC) Industrial Transformation Training Centre for Advanced Technologies in Rail Track Infrastructure (IC170100006), and the Centre for Geomechanics and Railway Engineering (CGRE), University of Wollongong, for financial support during his Ph.D.
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Journal of Geotechnical and Geoenvironmental Engineering
Volume 145 • Issue 10 • October 2019
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©2019 American Society of Civil Engineers.
History
Received: Sep 27, 2018
Accepted: Mar 8, 2019
Published online: Jul 17, 2019
Published in print: Oct 1, 2019
Discussion open until: Dec 17, 2019
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