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A calibrated verification model for fatigue assessment of road bridges
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Bro- och stålbyggnad.ORCID-id: 0000-0002-2833-4585
KTH, Skolan för arkitektur och samhällsbyggnad (ABE), Byggvetenskap, Bro- och stålbyggnad.ORCID-id: 0000-0002-3699-0814
2019 (engelsk)Inngår i: Proceeding of Nordic Steel 2019, 2019Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The format suggested in the Eurocode for fatigue verification of road bridges is under scrutiny in thispaper. The model is easy to use in practice, which is important for design purposes, but its accuracyhas been questioned. For this reason, a reliability-based evaluation of the safety level has beenperformed and is briefly recapitulated in this paper. It shows a large scatter in reliability index rangingfrom unacceptably low to overly conservative. A calibration of the existing model has been performedshowing a more consistent reliability level. Results from comparisons of the existing and calibratedmodels are shown for real bridges considering the influence on design stress ranges. The results showthat the Eurocode model is conservative for short span bridges subjected to low traffic volume. Forother cases, the Eurocode model is non-conservative.

sted, utgiver, år, opplag, sider
2019.
Emneord [en]
Steel bridge; Fatigue; Reliability; Eurocode; Calibration
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-259748DOI: 10.1002/cepa.1098OAI: oai:DiVA.org:kth-259748DiVA, id: diva2:1353368
Konferanse
The 14th Nordic Steel Construction Conference (NSCC)
Merknad

QC 20191111

Tilgjengelig fra: 2019-09-23 Laget: 2019-09-23 Sist oppdatert: 2019-11-11bibliografisk kontrollert

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Totalt: 37 treff
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