Chumyen, P, Connolly, DP, Woodward, PK et al. (1 more author) (2022) The effect of soil improvement and auxiliary rails at railway track transition zones. Soil Dynamics and Earthquake Engineering, 155. 107200. ISSN 0267-7261
Abstract
Railway track transition zones are areas where there is a sudden change in the track-ground structure. They include changes between ballasted and slab track, bridge approaches, and tunnel entry/exits. They are often the location of rapid track deterioration, and therefore this paper investigates the use of auxiliary rails and soil improvement to minimise train-track-ground dynamic effects. To do so, a 3D finite element model is developed using eight-node solid elements and a perfectly matched layer absorbing boundary condition. A moving train load is simulated using a sprung mass model to represent train-track interaction. After presenting the model, it is validated against field data collected on both a plain line and at a transition zone. Once validated, a sensitivity study is performed into auxiliary rails and soil improvement. It is found that auxiliary rails can improve the dynamic characteristics of the track across the transition, and that more widely spaced auxiliary rails provide greater benefit compared to closely spaced ones. Regarding soil improvement, a large benefit is found, and for the material properties under investigation, the effect of soil stiffening is greater than using auxiliary rails.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2022 Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Soil Dynamics and Earthquake Engineering. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | 3D numerical railway mode; Railway transition zones; Railroad auxiliary rail; Trackbed soil stiffness; Ballast-slab track |
Dates: |
|
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: | 01 Apr 2022 14:14 |
Last Modified: | 23 Feb 2023 01:13 |
Status: | Published |
Publisher: | Elsevier BV |
Identification Number: | 10.1016/j.soildyn.2022.107200 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:185341 |