ABSTRACT
Due to the long-term environmental exposure, steel bridge is threatened by loading capacity degradation caused by corrosion. Service life prediction is essential for steel bridges using time-variant reliability methods. This paper attempts to present a reliability-based methodology for the serviceability assessment of a steel girder subjected to corrosion. A corrosion growth model is adopted in this paper to evaluate the reliability of a corroded steel girder over time. A stochastic model of load effects is developed, and the first passage probability with a developed analytical solution is employed. To facilitate the practical application of the proposed methodology, a case study is presented. The method presented in this paper can serve as a rational tool for developing rehabilitation or maintenance strategies for steel bridges
