The effect of increasing train speed on track transition performance

R. Sanudo Ortega, VL Markine, L. Dell'olio

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

This paper shows the effect of increasing train speed on track transition performance. Earlier studies has been presented with high speeds and low speeds. The aim of these studies was to create a more gradual rail support transition on both sides of the structure. Most of the results presented show that the rail displacement and ballast stresses in the transition zone can be reduced by making several changes in the track superstructure elements and subgrade. In these studies all these modifications were studied for punctual high velocities but the effects between low and high speeds are still not analysed.
This research is presented as continuation of previous authors' work. The behaviour of track performance for higher train speeds in relation with vertical stresses and vertical displacements under sleepers (over ballast layer) is analysed numerically using the finite element program DARTS_NL.

The influence in sleeper separation from the slab track has been also analysed. The results show that the effect of increasing speed seems to be detrimental under sleeper's vertical displacements and stresses on ballast layer. When a train goes from slab to ballast increasing sleeper distance from the slab has a negative effect over the ballast stress.
Original languageEnglish
Title of host publicationProceedings of the 3rd international conference on railway technology: Research, development and maintenance
EditorsJ Pombo
Place of PublicationStirlingshire
PublisherCivil-Comp Press
Pages1-10
Number of pages10
Volume110
ISBN (Print)978-1-905088-65-2
DOIs
Publication statusPublished - 2016
EventRailways 2016: 3rd International Conference on Railway Technology: Research, Development and Maintenance - Cagliari, Italy
Duration: 5 Apr 20168 Apr 2016
http://www.civil-comp.com/conf/rw2016/rw2016_flyer.pdf

Publication series

Name
PublisherCivil-Comp Press

Conference

ConferenceRailways 2016: 3rd International Conference on Railway Technology: Research, Development and Maintenance
CountryItaly
City Cagliari
Period5/04/168/04/16
Internet address

Keywords

  • track transition
  • high speed
  • superstructure
  • subgrade
  • vertical displacements
  • vertical stresses

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