Forensic diagnosis on flood-induced bridge failure. II: Framework of quantitative assessment

NCUIR > Engineering College > Department of Civil Engineering > journal & Dissertation > Item 987654321/100028

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/100028

Title:	Forensic diagnosis on flood-induced bridge failure. II: Framework of quantitative assessment
Authors:	王仲宇;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
Contributors:	工學院土木工程學系
Keywords:	Technical Papers
Date:	2014-02-01
Issue Date:	2026-04-21 13:45:17 (UTC+8)
Publisher:	American Society of Civil Engineers (ASCE);American Society of Civil Engineers
Abstract:	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： American Society Of Civil Engineers ASCE Journals 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
Appears in Collections:	[Department of Civil Engineering] journal & Dissertation

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