2B13 Development of a new scour detector that enables monitoring of pier soundness (Condition Monitoring-Vehicle)

抄録

To ensure the safety of the railway operation, inclination angle of piers are constantly being monitored at risk of scour under flood conditions with scour detectors. Once that inclination exceeds a predetermined value, train operation control such as stopping trains and limiting speed is conducted. Scour may, however, gradually proceed without inclination of piers, with inclination suddenly occurring at a certain point, so constant monitoring of the soundness of piers is desirable. From this perspective, we have developed a new scour detector that has a monitoring function for pier soundness based on indicators such as peak frequency of microtremors or displacement of train-induced vibration, in addition to the inclination detection function. Furthermore, we installed the new scour detectors on the pier of several bridges, and confirmed its possibility to capture a change in the trend of the health of the pier. In this paper, we will introduce an overview of this new scour detector.