請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/70607
標題: | 浸水效應下跨河橋梁耐震易損性分析 Seismic fragility analysis of a water-surrounded river bridge |
作者: | An-Hsun Lee 李安勳 |
指導教授: | 廖國偉 |
關鍵字: | 橋梁,地震,重現期距,洪水水位,附加質量,易損性,破壞機率, Bridges,earthquake,fragility,return period,flood level,added mass,failure probability, |
出版年 : | 2018 |
學位: | 碩士 |
摘要: | 本篇之研究考量橋梁受到浸水效應,並模擬其在地震威脅下之破壞機率。為模擬橋梁在浸水效應下之反應,將橋梁之材料之質量重新定義,並進行非線性動力分析。而後透過考量之外力計算出橋梁之可靠度,並探討橋梁在特定重現期距之洪水水位、附加質量方法、地動強度下之易損性。為探討地震事件下之破壞機率,分別求取地震強度、事件發生機率與易損性曲線,而在探討地震威脅發生機率,再取保守計算求得。最後便可依此結構易損性與地震威脅之發生機率求得破壞機率。 The purpose of this study is to assess the failure probability for a water-surrounded river bridge under seismic excitations within its design service period. To simulate the water-surrounded effect of a bridge structure, developing the constitutive law of materials behavior of piers is necessary. In addition, the aforementioned data is utilized to construct a bridge model for performing nonlinear time-history analysis. Based on analysis results, the structural demand is acquired. The structural capacity can be determined from design guideline. The fragility of water-surrounded river bridge and seismic intensity can be evaluated with the information of demand and capacity. This study evaluates seismic intensity and fragility to obtain the failure probability. Finally, the failure probability under seismic and water-surrounded effect within its design service period is calculated by combining structural fragility and the occurrence probability of seismic event. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/70607 |
DOI: | 10.6342/NTU201802109 |
全文授權: | 有償授權 |
顯示於系所單位: | 生物環境系統工程學系 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-107-1.pdf 目前未授權公開取用 | 7.51 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。