Fatigue resistance of rib to deck, crossbeam to deck and deck to deck welds in orthotropic decks using structural stress
Johan Maljaars (TNO, Eindhoven University of Technology)
Richard Pijpers (TNO)
Weijian Wu (Technical University of Denmark (DTU), TU Delft - Steel & Composite Structures)
Henk Kolstein (TU Delft - Steel & Composite Structures)
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Abstract
This study derives the fatigue resistance of welded details in orthotropic decks using structural stress (hot-spot stress where possible) based on tests described in literature and tests by the authors. The data are supported with linear elastic fracture mechanics simulations. Details covered are the rib to deck weld, the crossbeam to deck weld and the deck butt weld. High fatigue resistances are found, caused by favourable loading modes (bending and compression) and reduced driving force with the growth of cracks. The technical specification TS 1993-1-901, part of the new generation of Eurocodes, is based on the results of this study.
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