Professor National Yang Ming Chiao Tung University
Taiwan has experienced a significant increase in extreme rainfall in recent years, resulting in severe consequences of disasters. It is notable that the exacerbation of flood-related issues, particularly the erosion of bridge foundations. Consequently, the real-time monitoring of bridge piers has become essential for early disaster prevention. However, traditional underwater measurement instruments typically require installation in the soil and rock surrounding the pier, incurring substantial financial and labor costs and being susceptible to flood-induced damage. In response to these challenges, this study tried to propose an approach for estimating pier scour using a triaxial accelerometer instrument. We have developed a triaxial accelerometer measurement device for continuous monitoring. Through signal conversion calculation, we translate the recorded acceleration data into frequency. The formula derived from our research converts real-time scour data from the bridge pier. We have implemented in-situ scouring monitoring at the Baibufan Bridge to validate our method. Our monitoring system incorporates float-out devices and the LSPIV system for comprehensive data collection. The analysis of these data sets serves to corroborate the effectiveness of our proposed method in estimating pier scour, thus enhancing the early warning system for flood-related disasters.
