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Characterisation of heavy traffic axle load spectra for mechanistic-empirical pavement design applications
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap. Swedish National Road and Transport Research Institute, Sweden.
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Transportvetenskap. Swedish National Road and Transport Research Institute, Sweden; University of Iceland.
2015 (engelsk)Inngår i: The international journal of pavement engineering, ISSN 1029-8436, E-ISSN 1477-268X, Vol. 16, nr 6, s. 488-501Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2015. Vol. 16, nr 6, s. 488-501
Emneord [en]
mechanistic-empirical design, performance models, rutting, fatigue cracking, axle load spectra
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-169120DOI: 10.1080/10298436.2014.943131ISI: 000354458200003Scopus ID: 2-s2.0-84929283717OAI: oai:DiVA.org:kth-169120DiVA, id: diva2:820376
Merknad

QC 20150612

Tilgjengelig fra: 2015-06-12 Laget: 2015-06-11 Sist oppdatert: 2017-12-04bibliografisk kontrollert

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Ahmed, Abubeker W.Erlingsson, Sigurdur
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