Development of maintenance systems for bridge members

Recently, the number and total length of Korean bridges are increasing aged 30 years after completion of construction. In particular, 46% of bridges are more than 20 years old, and the ratio of old bridges will surge after 10 years. In fact, the collapse of the “Seongsu Bridge” occurred in 1994, and the cause of the collapse is a failure of proper maintenance, and there is a need for an active bridge maintenance scenario. So, there is a growing social interest in bridges and infrastructure that has deteriorated, Also, studies on performance prediction and maintenance decision making of structures are underway. Therefore, the trend of increase in maintenance costs can be expected, thus more rational bridge maintenance is needed. Therefore, in this study, the condition of the bridge is predicted by using a deterioration model using bridge maintenance data in Korea so that a limited maintenance budget can be effectively utilized. And through the degradation model, a cost optimization technique is used. Therefore, it is possible to reduce the maintenance budget and support realistic maintenance decision-making model compared to the existing maintenance scenarios.