Esen, AF, Woodward, PK, Laghrouche, O et al. (4 more authors) (2021) Full-scale laboratory testing of a geosynthetically reinforced soil railway structure. Transportation Geotechnics, 28. 100526. ISSN 2214-3912
Abstract
Railway lines typically use traditional sloping embankments as the principal means of track support. However, the use of Geosynthetically Reinforced Soil (GRS) systems have gained popularity as alternatives to conventional embankments, particularly for high-speed lines in Japan. This system requires less ground stabilization/improvement and less land take than conventional embankments due to its smaller base area. This research investigates the immediate and long-term settlement behaviour of a Geosynthetically Reinforced Soil with Retaining Wall (GRS-RW) system subject to cyclic loading for two track forms: a concrete slab track and a ballasted track. First, a three-sleeper concrete slab section is constructed at full-scale under controlled laboratory conditions, followed by a ballasted track. Both are supported on a 1.2 m deep subgrade and a frost protection layer in accordance with railway design standards. Two different axle load magnitudes are applied statically, and then cyclically/dynamically, using 6 actuators to replicate moving train axle loads. It is observed that the slab track performs significantly better in terms of elastic and plastic deformation under both static and cyclic loading. Overall, the amplitude of the rail displacement under an individual cycle loading was approximately 25% lower for the slab track and the amplitude of the sleeper displacement on the ballasted track was approximately 6–7 times higher.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2021 Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Transportation Geotechnics. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | Full-scale cyclic loading; Railway track settlement; Geosynthetically reinforced soil; Long-term rail track behaviour; Ballast and concrete slab track; Railway embankment |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 25 Aug 2021 14:56 |
Last Modified: | 01 Mar 2022 01:38 |
Status: | Published |
Publisher: | Elsevier BV |
Identification Number: | 10.1016/j.trgeo.2021.100526 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:177455 |