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Reliability evaluation of the Eurocode model for fatigue assessment of steel bridges
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-2833-4585
2018 (English)In: Journal of constructional steel research, ISSN 0143-974X, E-ISSN 1873-5983, Vol. 141, p. 1-8Article in journal (Refereed) Published
Abstract [en]

In European countries, the design of bridges is conducted following the specifications in the Eurocodes. For verification against fatigue of steel bridges, a simplified model is suggested based on a single vehicle load model together with λ factors to estimate a representative stress range. Since the release of the Eurocodes the accuracy of this format has been discussed and questioned. In the current paper, a probabilistic model for fatigue assessment is suggested estimating the load effect from bridge weigh-in-motion (BWIM) measurements. The probabilistic model has been used to estimate the reliability reached with the existing verification format for road bridges. The result shows a large scatter depending foremost on the bridge geometry and the traffic volume. A tentative calibration of the verification format has been performed and new functions for two of the λ factors have been derived. With these new functions a significant improvement in the consistency of the reliability level has been achieved. The study demonstrates the need for a more extensive calibration of the Eurocode model and indicates the parameters to focus on.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 141, p. 1-8
Keywords [en]
Fatigue, Steel bridges, Reliability, Calibration, Eurocode
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-219454DOI: 10.1016/j.jcsr.2017.11.010ISI: 000423897100001Scopus ID: 2-s2.0-85034833732OAI: oai:DiVA.org:kth-219454DiVA, id: diva2:1163184
Funder
Swedish Transport Administration, 2015-001
Note

QC 20171207

Available from: 2017-12-06 Created: 2017-12-06 Last updated: 2018-02-16Bibliographically approved

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CiteExportLink to record
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  • de-DE
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  • Other locale
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