Feasibility investigations on bridge damage detection using BWIM focusing on changes in deflection influence line / たわみ影響線の変化に着目したBWIMによる橋梁の異常検知の可能性検討
- Resource Type
- Journal Article
- Authors
- Chul-Woo Kim; Daizo Ikeda; Soichiro Hasegawa; Takato Saito; Takumi Yokoyama; 横山 拓海; 池田 大造; 金 哲佑; 長谷川 聡一朗; 齊藤 隆仁
- Source
- 構造工学論文集 A / Journal of Structural Engineering, A. 2022, 68A:329
- Subject
- BWIM
damage detection
displacement
influence line
変位
影響線
損傷検知
- Language
- Japanese
- ISSN
- 1881-820X
This study investigates feasibility of bridge damage detection using BWIM and deflection of the bridge. A virtual axle is introduced to the vehicle so that increase of identified wheel loads caused by changes in deflection influence line due to damage can be distributed to the virtual axle. Investigating the identified wheel load of the virtual axle which should be zero in a pristine condition of the bridge theoretically, we can examine the possibility of damage in the bridge. Both model bridge damage experiments and simulations showed changes in the wheel load of the virtual axle due to damage in the bridge. Observations imply that selecting a proper location of the virtual axle would improve the accuracy of delivering increased virtual wheel load due to bridge damage.