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Some railroad settlement models - A critical review
Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Solid Mechanics .
2001 (English)In: Proceedings of the Institution of mechanical engineers. Part F, journal of rail and rapid transit, ISSN 0954-4097, E-ISSN 2041-3017, Vol. 215, no 4, 289-300 p.Conference paper, Published paper (Other academic)
Abstract [en]

Mathematical models to simulate railroad track settlements are reviewed and commented upon. There do not seem to be any generally accepted damage and settlement equations describing the long-term behaviour of the track. This also seems to be the case for the ballast material. Most descriptions of the settlement found in the literature are empirical, only different suggestions to describe the track settlement from a phenomenological point of view are available. The track settlement is mostly considered to be a function of number of loading cycles and/or a function of the magnitude of the loading. The settlement should also be a function of the properties of the ballast and subground materials, but very little has been found on this in the literature. By use of the finite element program LS-DYNA, a computer model (very simple) has been created to simulate the long-term behaviour of the track. The model consists of a rail, rigid sleepers, non-linear ballast springs (stiffnesses) and ballast damping. In a solid element beneath each ballast spring, track settlement can be accumulated. Settlement will occur if the stresses in that element exceed a yield limit of the element material. Also 'hanging sleepers' may be modelled and obtained as a result of the track settlement.

Place, publisher, year, edition, pages
2001. Vol. 215, no 4, 289-300 p.
Keyword [en]
Railroad ballast, Settlement models, Track deterioration, Track settlement, Train-track interaction
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-47204DOI: 10.1243/0954409011531585OAI: oai:DiVA.org:liu-47204DiVA: diva2:268100
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Dahlberg, Tore

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • Other style
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  • de-DE
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  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
  • html
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