Fatigue Life Assessment of Key Fatigue Details of the Corroded Weathering-Steel Anchor Boxes of a Cable-Stayed Bridge

In order to study the influence of corrosion on fatigue life weathering steel bridges, firstly nominal stress method is employed identify key details a typical weathering-steel anchor box cable-stayed bridge and then, multi-scale refined finite-element model for established. The established fatigue-life assessment corroded extended model, remaining under are predicted, initial pit size structures analyzed. research results show that pits can be equated introduction cracks in structure, calculated when crack 1 mm, 2 3 mm 0 with 20.3%, 12.7%, 11.5%, respectively. Therefore, equivalent structure and, even if small, greatly reduced. this paper based finite element fracture mechanics, which offer universal applicability generalizability make up lack bridges service.