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標題: 扭轉耦合基礎隔震結構裝設調諧質量阻尼器之減震分析
Vibration Control of Torsionally-Coupled Base-Isolated Structures Using Tuned Mass Dampers
作者: 劉素妤
Liu, Su-Yu
關鍵字: 扭轉耦合基礎隔震結構;Torsionally-coupled base-isolated structures;調諧質量阻尼器(TMD);最佳化;位移均方反應比;Tuned mass dampers;Optimal;Mean-square displacement response ratio
出版社: 土木工程學系所
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This study deals with the practical design consideration and vibration control effectives of tuned mass damper (TMD) for torsionally-coupled base isolated structures under ground motions. The optimal parameters of TMD are determined by minimizing mean-square displacement response ratio contributed by the first three modes of controlled degree-of-freedom between the structures with and without TMD. A planar base-isolated structure under four selected ground motions is firstly simulated. The effectiveness of the TMD under different eccentricities of the primary structure is then discussed. A reduction of approximate 30% in base displacement and structure absolute acceleration of root mean square (RMS) under soft soil ground motion record. However, a reduction of approximate 15% in base displacement and structure absolute acceleration of root mean square (RMS) under firm soil ground motion records. The TMD is effective when the base isolated structure and the soft soil ground motion. However, the effectiveness is not obvious under firm soil ground motion, because of the well performance of the base isolation system.
其他識別: U0005-2008201217274200
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