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 Title: 鋼骨結構物之地震易損性分析 Authors: 徐銘志;Ming-Zhi Xu Contributors: 土木工程研究所 Keywords: 易損性分析;非線性動力分析;層間變位角;fragility curves;nonlinear dynamic analysis;story drift ratio Date: 2006-07-20 Issue Date: 2009-09-18 17:19:58 (UTC+8) Publisher: 國立中央大學圖書館 Abstract: 台灣處在地震頻繁的歐亞板塊與菲律賓板塊的交界處，所以發生大地震的機率也是相當大，換言之，對生命財產的威脅也相對的增加，所以希望在發生地震災害前就可以利用地震風險評估的事前預測，預測出在建築物所在的地震度大小對該建築物的損害程度，此時就要倚賴結構物易損性曲線，對應不同的震度下的損害率，將建築物可能造成的損害做出衡量，給風險管理者，例如保險公司甚至是再保險公司參考。 本文採用非線性動力分析作為建立易損性曲線的工具，非線性動力分析考慮結構物受震時其構件將材料性質延伸到塑性段，所以在分析上會更為精確。在定義損害指數上，本文採用層間變位角為衡量結構物損害程度之參考，依照不同的樓層高度及不同構材對應相對的門檻值，即可判斷建築物的損害程度。 本文針對民國93年耐震設計規範，分析5、8、12、22層樓之鋼構建築，以40筆地震歷時進行非線性動力分析，並由統計分析建立所建典型鋼構建築之易損性曲線，其可做為未來進行鋼構建築地震風險評估之用。 Taiwan is a high seismic zone since it located at the region between the Philippine Sea plate and the Eurasian plate. Strong earthquakes occur frequently. We want to predict the losses and the possible damage states of buildings before the, major earthquakes occurred. So the damage ratio can be calculated via fragility curves with the different spectral acceleration. The results can be refereed by seismic risk administrator, i.e. re-insurance company or insurance company. Nonlinear dynamic analysis is adopted to derive fragility curve in this research. Material plasticity is taken into account in nonlinear dynamic analysis, so the analysis results would be more precise. Damage index is defined as the simulated story drift ratio. Damage state can be determined via fragility curves for different building heights and members. 5, 8, 12, 22, stories buildings models which are compliant with 2004 seismic design code are simulated with 40 earthquake time-history data. The fragility curves which developed by statistical processes for typical steel structures can be referred for earthquake risk assessment. Appears in Collections: [土木工程研究所] 博碩士論文

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