研究生: |
廖奕翔 I-HSIANG LIAO |
---|---|
論文名稱: |
考慮回復性能影響之橋梁補強策略益本比分析 Benefit-cost ratio Analysis of Retrofit Strategies for Bridges Considering the Resilience Effect |
指導教授: |
邱建國
Chien-Kuo Chiu |
口試委員: |
劉光晏
Kuang-Yen Liu 廖國偉 Kuo-Wei Liao 楊亦東 I-Tung Yang 邱建國 Chien-Kuo,Chiu |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2018 |
畢業學年度: | 106 |
語文別: | 中文 |
論文頁數: | 151 |
中文關鍵詞: | 橋柱補強 、系統可靠度 、敏感性分析 、回復性能 、益本比 、橋梁 |
外文關鍵詞: | Bridge column retrofit, System reliability, Sensitivity analysis, Resilience, Benefit-cost ratio, Bridge |
相關次數: | 點閱:268 下載:2 |
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本研究將著重於橋柱補強之效益分析,如RC包覆及鋼板包覆補強,引用系統可靠度及回復性能評估來分析各補強方案之效益。評估橋梁補強效益時,須先了解橋梁於災害下之損傷機率,本研究定義損傷等級時,根據國外學者及規範的建議,除原始橋柱耐震性能外,亦加入構件/元件之檢核,如帽梁強度、橋柱穩定性、基礎強度等,故橋梁整體各損傷等級皆由數個檢核項目來決定,並以系統可靠度方法來計算損傷等級發生機率。此外,以可靠度敏感性分析找出橋梁敏感性構件/元件,以此提供補強之配套措施。本研究將矩法與蒙地卡羅模擬之結果進行比較,以此提供給合適之可靠度分析方法。在回復性能評估中,本研究以構件/元件損傷等級所對應之修復天數來建立各損傷等級之回復曲線,結合系統可靠度來建立橋梁整體之功能性曲線並計算回復性能指標,以此反映各補強方案下所引致之交通流量變化而計算所對應之間接成本。最後,本研究將以台北市兩座橋梁為例,以益本比來計算各補強方案之效益,以此提供給決策者執行補強之依據。
This study focuses on the analysis of the benefits of the bridge column retrofit, such as reinforced concrete jacketing and steel jacketing. A system reliability and resilience assessment are used to analyze the benefit of each retrofitted method. For the benefit evaluation of the retrofit of a bridge, it is necessary to understand the probability of damage of the bridge under the disaster. In addition to the seismic performance of piers, the components/members of cap beams, stability of piers, foundation, etc. are used to define the various damage states of the bridge. Furthermore, the system reliability is used to calculate the probability of occurrence of each damage state. This study also adopts Reliability sensitivity analysis that is used to determine the most influenced component for providing the complementary of retrofit. Additionally, the comparison of reliability method provides engineers with applicability. For the indirect cost within the retrofit, this work combines the system reliability and the recover time corresponding to the repair works of each component under specified damage state to establish functional curve and calculate the resilience index to consider the change of transportation capacity under the retrofit. Finally, this study also presents the analysis of two bridges in Taipei as examples to determine the benefits of each retrofit method to provide decision makers with the retrofit reference.
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