Three-Dimensional Discrete-Element Modeling of Geocell-Reinforced Ballast Considering Breakage
Publication: International Journal of Geomechanics
Volume 20, Issue 4
Abstract
This paper presents a three-dimensional discrete-element method (DEM) study examining the settlement and breakage behavior of geocell-reinforced ballast. The reinforced ballast chamber reproduced the geocell in configuration and the ballast particles in shape and breakage characteristics. The reinforced ballast chamber was subjected to monotonic and cyclic loads. Parametric studies were conducted on the geocell embedment depth and ballast shape. For each case, ballast settlement, geocell responses, and ballast breakage behavior were evaluated. This study demonstrates that the geocell can effectively reduce settlement and ballast breakage. The geocell stiffens its embedded layer and reduces stress propagation into the underlying layer.
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Data Availability Statement
All data, models, or code generated or used during the study are proprietary or confidential in nature and may only be provided with restrictions.
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Published In
International Journal of Geomechanics
Volume 20 • Issue 4 • April 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Oct 23, 2018
Accepted: Jun 12, 2019
Published online: Feb 11, 2020
Published in print: Apr 1, 2020
Discussion open until: Jul 11, 2020
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