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| 題名: | Forensic diagnosis on flood-induced bridge failure. II: Framework of quantitative assessment |
| 作者: | 吳祚任;Wu, Tso-Ren;Wang, Helsin;Ko, Yung-Yen;Chiou, Jiunn-Shyang;Hsieh, Shih-Chun;Chen, Cheng-Hsing;Lin, Cheng;Wang, Chung-Yue;Chuang, Mei-Hui |
| 貢獻者: | 地球科學學院水文與海洋科學研究所 |
| 關鍵詞: | Technical Papers |
| 日期: | 2014-02-01 |
| 上傳時間: | 2026-04-23 11:07:57 (UTC+8) |
| 出版者: | American Society of Civil Engineers (ASCE);American Society of Civil Engineers |
| 摘要: | 摘要： AbstractThe failure of the Shuang-Yuan Bridge in Taiwan caused by floods associated with Typhoon Morakot in August 2009 prompted this forensic investigation into its causes. The investigation found multiple factors for the bridge failure: (1) flood flows, (2) river-bend-induced skewed flow, and (3) the effects induced by extended foundation caps and rafted woody debris. A qualitative assessment framework, which includes hydraulic computation, a fluid-solid-coupled model, and foundation stability analysis, is introduced to develop scenario simulations and forensic diagnosis to identify the main causes of the bridge failure. The watershed-wide and local hydraulic conditions are reconstructed using hydraulic computation. The flow field, dynamic water-pressure distributions, scour formation, flood resistance, and flood thrust are efficiently simulated using a fluid-solid-coupled model and foundation stability analysis around the bridge foundations under different hydraulic and environmental conditions. The forensic diagnosis results show that river flooding, extended foundations, skewed flow, and rafted wood aggravated the scour depths and undermined the flood-resistant capacity of the bridge at different severities. In particular, rafted wood contributed to individual fracturing of the bridge piles.
出版者： American Society of Civil Engineers
出版日期： 2014-02-01
出處： Journal of performance of constructed facilities, 2014-02, Vol.28 (1), p.85-95
資源來源： EBSCOhost Academic Search Premier
版權： 2014 American Society of Civil Engineers.
識別號： ISSN: 0887-3828
識別號： EISSN: 1943-5509
識別號： DOI: 10.1061/(ASCE)CF.1943-5509.0000393 |
| 顯示於類別: | [水文與海洋科學研究所] 期刊論文
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