Probabilistic Model for Fatigue Crack Growth in Welded Bridge Details

Henrik Stensgaard Toft, John Dalsgaard Sørensen, Thierry Yalamas, Julien Baussaron

Research output: Contribution to book/anthology/report/conference proceedingConference abstract in proceedingResearchpeer-review


In the present paper a probabilistic model for fatigue crack growth in welded steel details in road bridges is presented. The probabilistic model takes the influence of bending stresses in the joints into account. The bending stresses can either be introduced by e.g. misalignment or redistribution of stresses in the structure. The fatigue stress ranges are estimated from traffic measurements and a generic bridge model. Based on the probabilistic models for the resistance and load the reliability is estimated for a typical welded steel detail. The results show that large misalignments in the joints can have a significant influence on the reliability level.
Original languageEnglish
Title of host publicationIABSE Conference Rotterdam 2013 : Assessment, upgrading and refurbishment of infrastructures
EditorsIABSE Switzerland
Number of pages2
PublisherInternational Association for Bridge and Structural Engineering
Publication date2013
ISBN (Print)978-3-85748-123-9
Publication statusPublished - 2013
EventIABSE Conference Rotterdam 2013: Assessment, upgrading and refurbishment of infrastructures - Rotterdam, Netherlands
Duration: 6 May 20138 May 2013


ConferenceIABSE Conference Rotterdam 2013
SeriesIABSE Conference Reports


  • Fracture Mechanics
  • Reliability
  • Steel
  • Welded Details
  • Traffic Load
  • Fatigue

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