Auxiliary rails as a mitigation measure for degradation in transition zones

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Abstract

This paper studies the effectiveness of adding auxiliary rails as a mitigation measure for degradation in transition zones of railway tracks. More specifically, it investigates the settlement mechanisms counteracted by the additional rails. Results show that when the system’s response is in the quasi-static regime, adding auxiliary rails over the soft part of the transition zone is beneficial while adding them over the whole transition zone is not. Furthermore, the auxiliary rails have a beneficial impact also when the system’s response is in the dynamic regime; the beneficial effect is caused by the improved load distribution to the supporting structure and not from counteracting the dynamic response amplification that occurs at transition zones. While this mitigation measure has been previously investigated, the contribution of this study lies in a more in-depth analysis of the mechanism through which auxiliary rails can mitigate the degradation at transition zones.
Original languageEnglish
Title of host publicationProceedings of The Fifth International Conference on Railway Technology: Research, Development and Maintenance
EditorsJ. Pombo
Place of PublicationEdinburgh, UK
PublisherCivil-Comp Press
Number of pages7
VolumeCCC 1
DOIs
Publication statusPublished - 2023

Publication series

NameCivil-Comp Conferences
PublisherCivil-Comp Press
Volume1
ISSN (Electronic)2753-3239

Keywords

  • Transition zone
  • Auxiliary rails
  • Settlement mechanisms

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