Fatigue behaviour of toe crack at the lower end of crossbeam-to-stiffener weld with cut-outs in OBDs

Weijian Wu, Johan Maljaars, David Malschaert*, Milan Veljkovic, Henk Kolstein, Richard Pijpers

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Steel Orthotropic Bridge Decks (OBDs) are widely used in the superstructures of movable and long-span bridges. There is a high concentration of stress at many welded connections, which are governing the fatigue performance of OBDs. The fatigue behaviour of the lower end of weld in crossbeam-to-stiffener connection with cut-outs is studied from multiple experimental results obtained from a 48m2 full-scale specimen, as well as finite element simulations. The fatigue resistance of the detail is recommended based on 8 experiments reported in the current study and experiments in the literature using the hot spot stress method. The influence of the load location on the hot spot stress is analysed. The effective notch stress method is used to evaluate the fatigue resistance with different weld profiles.
Original languageEnglish
Article number108887
Number of pages13
JournalJournal of Constructional Steel Research
Volume222
DOIs
Publication statusPublished - 2024

Keywords

  • Crossbeam-to-stiffener
  • Cut-outs
  • Fatigue resistance
  • Hot spot stress
  • Influence surface
  • Orthotropic bridge deck

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