會議論文
| 學年 | 105 |
|---|---|
| 學期 | 2 |
| 發表日期 | 2017-05-10 |
| 作品名稱 | Indirect frequency measurement of cable-stayed bridges in cross winds |
| 作品名稱（其他語言） | 英文 |
| 著者 | 姚忠達 |
| 作品所屬單位 | |
| 出版者 | |
| 會議名稱 | 10th Finite Differences, Finite Elements, Finite Volumes and Boundary Elements (F-and-B '17) |
| 會議地點 | 巴塞隆納, 西班牙 |
| 摘要 | In conventional bridge health monitoring, a number of sensors are deployed on a bridge directly for detecting its various dynamic properties. This is so called “direct method”. But the drawbacks of the direct method are: laborious deployment of sensors, time-consuming, and not portable. Following the previous Yang’s works (2004) in indirect method by using a passing test vehicle as a message receiver of bridge response, this study regards cross winds as lateral excitational sources to detect the lateral bridge frequencies from the lateral response of the moving test vehicle. To account for the wind-vehicle-bridge interactions in performing dynamic analysis, an iteration-based 3D vehicle-bridge interaction (VBI) finite element method is developed. The whole wind/VBI system is decomposed into two subsystems: the wind-bridge subsystem and the wind-vehicle subsystem. Then the iterative scheme is carried out to compute the interaction response between the two subsystems independently and iterate for removing unbalance forces. The numerical results indicated that the present indirect bridge monitoring is a simple and feasible method to measure the lateral frequency of a long-span bridge in cross winds. |
| 關鍵字 | indirect measurement;VBI;wind engineering |
| 語言 | en |
| 收錄於 | |
| 會議性質 | 國際 |
| 校內研討會地點 | 無 |
| 研討會時間 | 20170510~20170512 |
| 通訊作者 | 姚忠達 |
| 國別 | ESP |
| 公開徵稿 | |
| 出版型式 | |
| 出處 | Proceeding of FB-17 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/110295 ) |