강교량의 부식 및 파손에 대한 수명평가 = An Evaluation of Life for Corrosion and Damage of Steel Bridges

다국어 초록 (Multilingual Abstract)

Recently, steel has been very frequently chosen in building many civil infra-structures including bridges due to its several beneficial advantages as compared to concrete structures. However, for the most cases, damage such as section reduction, that is resulted from corrosion, was natural and inevitable. Therefore, it becomes very important to evaluate the structural safety and to assess the life for the worst cases. In this study, many year used steel box bridge, whose section was reduced due to corrosion, was considered to evaluate damage for design loads in the simplified numerical model. The boundary condition was changed to find how much damage can occur. Finally, the change of fatigue lives was investigated in terms of the used time of structures and the horizontal and longitudinal movements of bridge support.