노후교량의 진동 사용성 평가를 위한 IoT 계측시스템 적용

초록

This study used an IoT measurement system to evaluate the vibration usability of 20 aging bridges by analyzing acquired vibration acceleration data and referencing the Reiher-Meister curve as a usability criterion. Following the initial analysis, a model was developed to calculate exceedance probabilities for each vibration usability grade, leading to several conclusions. Through the use of long-term measurement data and the Reiher-Meister curve, the usability analysis for aging bridges indicated a range of usability grades from A to F, demonstrating a straightforward method for assessing vibration usability. A probability distribution model was created to establish exceedance probabilities for each vibration grade by bridge, revealing dominant vibration characteristics specific to each bridge’s structural properties. In conclusion, the study suggests that in maintaining aging bridges, those with higher exceedance probabilities in the upper grades should be prioritized for repair and reinforcement. This research highlights the value of combining long-term data with probabilistic models to support informed decision-making in bridge maintenance and management.

키워드