此研究主要目的為探討含摩擦阻尼器外伸臂桁架結構系統的最佳化分析與耐震性能。所探討之結構包含外伸臂結構系統及摩擦阻尼器。外伸臂結構系統主要由核心結構、外周結構及外伸臂組成，而其中外伸臂系統可以增加結構物側向勁度與強度，而摩擦阻尼器加裝於外伸臂端部，通過摩擦行為消散能量並增加結構物阻尼比。本研究之含摩擦阻尼器外伸臂結構系統為利用OpenSees建立一樓高為9公尺共分為10層總重約15公噸之鋼結構縮尺振動台數值模型，外伸臂可配置於其中任一層。利用多振態非線性反應譜分析探討10種不同外伸臂位置(2F、3F、4F、5F、6F、7F、8F、9F、10F、RF)以及6種不同摩擦阻尼器正向力(2kN、5kN、10kN、20kN、50kN、100kN)分別探討模態週期、模態等效質量、模態等效勁度。反應譜分析需考慮摩擦阻尼器滑動時增加等效阻尼比帶來的反應折減，利用迭代找出含摩擦阻尼器的結構物的最大變形。利用SRSS將各模態反應疊加以探討不同配置對於頂層位移、層間位移角分佈、外周柱軸力、傾覆彎矩、等效阻尼比的影響。為更加精準掌握摩擦阻尼器於外伸臂上運作之行為以及摩擦係數，另設計一摩擦阻尼器並以反覆載重試驗進行測試。此摩擦阻尼器與振動台相同，同樣以不銹鋼304作為摩擦材料、具兩個摩擦面、以螺栓作為正向力加載來源、以荷重計觀察正向力變化。試驗以不同頻率(0.05~4Hz)不同位移(15~6mm)進行反覆加載，在試驗過程中，摩擦係數在不同正向力與加載頻率及溫度下之變化極小。縮尺振動台數值模型之反應譜分析所得最佳化設計，與實際振動台試驗結果趨勢相近，針對振動台試驗環境及試驗實際配置修正數值模型，並以5組地震歷時分別為BCJL2、ElCentro、ImperialValley、Tabas、ChiChi根據日本規範等級二反應譜正規化後進行非線性歷時分析，探討外伸臂於3種不同位置6F、8F、RF配置下對於頂層位移、層間位移角、外周柱軸力、核心結構彎矩之影響，以及在3種不同正向力5kN、10kN、20kN的摩擦阻尼器之消能表現。比較反應譜分析、動力歷時分析與振動台試驗之趨勢，並整合三者趨勢提出含摩擦阻尼器外伸臂結構受震特性與最佳耐震配置。

The main purpose of this study is to investigate the optimization design and seismic performance of the damped-outrigger system incorporating friction dampers. The studied model consists of an outrigger truss system and the friction dampers. The outrigger truss structure system consists of a core structure, perimeter structures, and the outriggers. The outrigger increases the lateral stiffness and strength of the core structure. The friction damper installed between the end of the outrigger and perimeter column dissipates energy through the relatively deformation between outrigger end and perimeter column. The energy dissipation from the friction damper increases the damping ratio of the structure.

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