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This study investigates the fatigue performance and failure mechanisms of a new rib-to-floorbeam (RTF) welded joint in orthotropic steel decks (OSDs). Full-scale fatigue tests reveal that the new RTF joint exhibits significantly improved fatigue life, approximately twice that of traditional RTF joints, with crack initiation occurring at different locations. The analysis indicates that weld residual stress is a key factor influencing fatigue crack initiation and propagation in these welded joints.

Author

lyuzhilin363

Language

EN