2025 Volume 4 Issue 1 Pages 191-200
The need for preventive maintenance of infrastructure such as road bridges is being discussed. However, in reality, maintenance of bridge bearings is often carried out in a reactive manner. In this study, we considered that the reason for this situation is that the mechanisms of degradation of bridge bearings and the relationship between degradation and function are not clear, therefore we conducted research to clarify these points. We conducted a corrosion acceleration test by spraying salt water on the movable parts of steel bearings installed on an actual size outdoor test bridge, and monitored changes in the displacement of bearings and other factors in response to temperature changes over a period of about six months. As a result, the mechanism by which the displacement following amount changes in response to the progression of corrosion was clarified, and in addition, the relationship between corrosion of the movable parts of the bearings and changes in the displacement following function was demonstrated empirically.
