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Type: Journal article
Title: Three-dimensional discrete-element modeling of geocell-reinforced ballast considering breakage
Author: Liu, Y.
Deng, A.
Jaksa, M.
Citation: International Journal of Geomechanics, 2020; 20(4):04020032-1-04020032-21
Publisher: American Society of Civil Engineers
Issue Date: 2020
ISSN: 1532-3641
Statement of
Yang Liu, An Deng, and Mark Jaksa
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.
Keywords: Discrete element; railway ballast; geocell; breakage; cyclic loading
Rights: © 2020 American Society of Civil Engineers.
DOI: 10.1061/(ASCE)GM.1943-5622.0001552
Appears in Collections:Aurora harvest 8
Civil and Environmental Engineering publications

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