Dong, K, Connolly, DP, Laghrouche, O et al. (2 more authors) (2018) Non-linear soil behavior on freight vs passenger lines. In: Computers in Railways XVI. COMPRAIL 2018 16th International Conference on Railway Engineering Design and Operation, 02-04 Jul 2018, Lisbon, Portugal. , pp. 507-516. ISBN 978-1-78466-285-1
Abstract
Upgrading existing passenger-only railway lines to carry freight traffic is becoming increasingly desirable. This is challenging because freight trains have larger axle loads and thus can have a negative effect on track longevity, particularly on ballasted lines supported by sub-optimal ground conditions. These additional loads can cause large subgrade strains resulting in non-linear behaviour, which should be considered before permitting freight vehicles on passenger routes. To do so requires the modelling of non-linear soil behaviour which is challenging. Therefore, this paper presents a solution in the form of an equivalent non-linear, thin layer element soil model, coupled to an analytical track model. The model has low computational demand and can adjust subgrade stiffness depending upon strain levels. Therefore, it is well suited to computing track response induced by freight trains. This paper validates the model and then uses it to compare the differences between the response of a ballasted line to freight and passenger vehicles.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 WIT Press. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | railway freight; railroad; non-linear soil |
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: | 13 Nov 2019 11:38 |
Last Modified: | 13 Nov 2019 11:38 |
Status: | Published |
Identification Number: | 10.2495/CR180451 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:153406 |