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Characterisation of heavy traffic axle load spectra for mechanistic-empirical pavement design applications
KTH, School of Architecture and the Built Environment (ABE), Transport Science. Swedish National Road and Transport Research Institute, Sweden.
KTH, School of Architecture and the Built Environment (ABE), Transport Science. Swedish National Road and Transport Research Institute, Sweden; University of Iceland.
2015 (English)In: The international journal of pavement engineering, ISSN 1029-8436, E-ISSN 1477-268X, Vol. 16, no 6, 488-501 p.Article in journal (Refereed) Published
Abstract [en]

Heavy traffic axle load spectrum (ALS) is one of the key inputs for mechanistic-empirical analysis and design of pavement structures. Frequently, the entire ALS is aggregated into number of equivalent single axle loads or assumed to have constant contact area (CCA) or constant contact pressure. These characterisations affect the accuracy and computational performance of the pavement analysis. The objective of this study was to evaluate these characterisations based on predicted performances to rutting and fatigue cracking of several pavement structures subjected to ALS data collected from 12 bridge weigh in motion stations. The results indicated that for layers below the top 25cm, all characterisations produced similar values of predicted rutting. However, for the top 25cm, the methods differed in the predicted performances to rutting and fatigue cracking. Furthermore, an improvement to the CCA approach was proposed that enhanced the accuracy while maintaining the same level of computational performance.

Place, publisher, year, edition, pages
2015. Vol. 16, no 6, 488-501 p.
Keyword [en]
mechanistic-empirical design, performance models, rutting, fatigue cracking, axle load spectra
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:kth:diva-169120DOI: 10.1080/10298436.2014.943131ISI: 000354458200003Scopus ID: 2-s2.0-84929283717OAI: oai:DiVA.org:kth-169120DiVA: diva2:820376
Note

QC 20150612

Available from: 2015-06-12 Created: 2015-06-11 Last updated: 2017-12-04Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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