本研究將探討增設黏性阻尼器之減震結構的非彈性地震反應。在相同的添加阻尼比情況下，設計三種不同形式的二維構架：規則型結構、具軟層結構及Setback Building，地震歷時考慮符合工址最大考量設計地震力之人工地震歷時，並依五種阻尼係數分配法分配：阻尼係數依平均分配、層間剪力分配、剪力應變能全樓層分配、剪力應變能有效樓層分配與簡化序列搜尋法分配(SSSA)，再以數值分析程式SAP2000於構架的桿端設定彎矩塑性鉸，進行非彈性動力歷時分析，由輸出之數據結果來比較，並分析各阻尼分配法之效益與結構物在各阻尼分配法下之非彈性地震力反應。經分析可知，各分配法對反應的抑制、塑性轉角的折減都相當接近，而剪力應變能有效樓層分配法之減震效益、經濟價值、時間成本都較簡化序列搜尋法佳；且分析過程中發現SAP2000預設的塑鉸性質於動力歷時分析時不合理，故本研究再針對此一問題探討，並建議採使用者自訂的塑鉸性質改成完全彈塑性的形式來設定塑性鉸性質。

The inelastic seismic responses of three types of moment resisting frames equipped with viscous dampers are investigated. The three types of frames include a regular building frame, two vertically irregular frames respectively with a soft story and a setback. The added damping ratio is set to be the same for all three frames. However, the damping coefficient is distributed based on five different distribution methods. The inelastic seismic responses are compared for each type of frame with and without added viscous dampers. The pattern of plastic hinging, maximum hinge rotation, maximum story drift and floor acceleration, story shear and maximum damper force, and total number of dampers are all compared in the study. In order to enhance the computational efficiency, only linear viscous dampers are used for the study.

The study has concluded that no significant difference has been found for the frames with added damping coefficient with the five distribution methods. Nevertheless, the distribution method proportional to the story shear strain energy and only to the “efficient stories” (SSSEES) may be more cost-effective than the renowned simplified sequential search algorithm (SSSA) and the other existing method.

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