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Infrastructure Inspection During and After Unexpected Events - Phase I.
| 题名： | Infrastructure Inspection During and After Unexpected Events - Phase I. |
| 作者： | Rahmatalla, S.; Karimpour, A. |
| 关键词： | Structural health monitoring (SHM), Transmissibility Based Damage Detection (TBDD), Damage detection (DD), Highway bridges, Ground vibration data |
| 摘要： | This report presents the development of a vibration-based damage-detection methodology for the structural health monitoring and damage detection of vital line structures and highway bridges under extreme conditions, including seismic and water interactions. The damage-detection method uses the transmissibility function—the ratio between the output signals at two locations on the structure—of the acceleration, angular velocity, and strain signals to generate a damage index. The validity of the proposed damage index was tested on a small-scale model of a highway bridge under impact loading, with ground vibration, and inside a water flume. The initial experimental results showed a very promising performance of the proposed damage index in detecting changes in the integrity of the structure under different loading/damage conditions. The results also showed the benefits of deploying heterogeneous kinds of sensors rather than just using one type of sensor. |
| 报告类型： | 科技报告 |
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