第五部門：応用数理問題―計算機科学から社会科学まで

[24007-12-04] Damage detection for steel arch bridge model utilising natural frequencies and rotation angles (Proceedings of Symposium on Applied Mechanics)

*Kana Akahoshi¹, Gen Hayashi¹, Yu Chen¹, Takashi Yamaguchi¹ (1. Osaka Metropolitan University)

Keywords:Arch bridge, Natural frequency, Damage detection

In vibration based structural health monitoring, the detection of multiple damage locations and degrees is important, but there are many problems. The purpose of this study is to improve the accuracy of multiple damage detection. FE analysis was performed to investigate the effect of damage location on low-order natural frequencies and rotation angles, and it was found that detecting multiple damages is possible.