Wang, J, Yu, H-S orcid.org/0000-0003-3330-1531 and Liu, S (2021) Shakedown Limits of Slab Track Substructures and Their Implications for Design. In: Direct Methods: Methodological Progress and Engineering Applications. PCM-CMM 2019, 08-12 Sep 2019, Kraków, Poland. Springer International Publishing , pp. 211-225. ISBN 9783030488338
Abstract
This paper presents an approach to shakedown of slab track substructures subjected to train loads. The train load is converted into a distributed moving load on the substructure surface using a simplified track analysis. Based on the lower-bound dynamic shakedown theorem, shakedown solutions for the slab track substructures are obtained over a range of train speeds between zero and the critical speed of the track. It is found the shakedown limit is largely influenced by the ratio of layer elastic moduli and the ratio of train speed to critical speed rather than their absolute values. An attenuation factor, as a function of the critical speed and the friction angle of subsoil, is proposed to effectively obtain the shakedown limit of the slab track substructure at any train speed. In light of the shakedown solutions, improvements to the existing design and analysis approaches are also suggested.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Switzerland AG 2021. This is an author produced version of a proceedings paper published in Direct Methods. Lecture Notes in Applied and Computational Mechanics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Slab track; Shakedown; Design; Train loads; Trains speed |
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: | 06 May 2021 09:10 |
Last Modified: | 17 Jul 2021 00:38 |
Status: | Published |
Publisher: | Springer International Publishing |
Identification Number: | 10.1007/978-3-030-48834-5_11 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:173544 |