土木分野におけるセンサ技術の利用と可能性 (6)

[CS9-46] Long-term Monitoring of Existing Six Bridges using Low-frequency Accelerometer

*井関 晃広¹、遠藤 義英¹、皆川 翔輝¹、山岸 貴俊¹ (1. 能美防災株式会社)

Keywords:Existing bridge, Monitoring system, Three-axis accelerometer, Degradation, Live load displacement, Natural frequency

In Japan, upgrading bridge maintenance technology and cost cutting for over 700,000 existing bridges are required. We aim to develop practical monitoring technique for bridge using three-axis accelerometer. Previously, we experimented with several existing-bridges and a mock floor board for degragation diagnosis. In this paper, we discuss the result of the analysis of bridge displacement and vibration while existing six bridges had been monitored for over a year.