Abstract
In this study, the fatigue test conditions for reproducing weld toe cracking into U-rib wall in orthotropic bridge decks (OBD) are investigated by both experimental and numerical methods. The traction structural stress method is shown effective for evaluating this fatigue failure mode (referred to as “toe-U rib” hereafter) and its associated test conditions. Experimental validations were then performed in this study, in which toe-U rib failure mode was consistently observed. It is found that the toe-U rib failure mode and its fatigue capability are not impacted by typical variations in weld penetration in both single-sided and double-sided welds.
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