黏性阻尼器應用於二維與三維建築結構之最佳化設計

Optimal Design of Viscous Dampers for Two and Three-Dimensional Building Structures

詹鵬台(Peng-Tai Chan)

指導教授 ： 呂良正

國立臺灣大學/工學院/土木工程學研究所/碩士(2016年)

https://doi.org/10.6342/NTU201601292

摘要

近年來，被動消能裝置被廣泛的應用於建築結構中。在現行的規範當中，如FEMA273/274 僅提供工程師黏性阻尼器等效阻尼比設計之建議，但更有效益的阻尼器最佳化設計卻鮮少提及過。
儘管許多效益極佳能幫助建築結構抵抗地震的阻尼最佳化方法陸續被提出，但其中一些最佳化方法夾帶著繁瑣且複雜的計算，較難以被實際工程界所接受及使用。因此，在此研究裡，主要是利用較為簡單且同時兼具理想抗震效益的方法以設計線性與非線性阻尼器之最佳化配置。
在此論文中將會把目前現存的配置法做討論。此外，為了使配置法能將阻尼消能向上提升以增進結構物抵抗地震力，本文提出了兩種新的配置方法。
本文將不同的阻尼最佳化配置方法，如簡化循序搜尋演算法 (Simplified Sequential Search Algorithm, SSSA)、元素交換法(Element Exchange method, EEM)以及分配法(Distribution Method)應用於不同的剪力構架以及三維不對稱結構中。此外，利用多筆真實地震歷時以及符合設計反應譜的人造地震歷時對這些方法做檢核。最後，以統計的方法來探討各種方法應用於不同建築結構之適用性。

關鍵字

線性黏性阻尼器 ； 非線性黏性阻尼器 ； 阻尼最佳化配置 ； 剪力構架 ； 三維不對稱建築結構

並列摘要

Nowadays, passive energy dissipation devices are used widely in many buildings. The current code such as FEMA273/274 is only suggested the equivalent damping ratio of supplemental viscous dampers, but more efficient optimal design of viscous dampers was less mentioned.

Although many optimal damper placement methods, have been proposed, these methods could improve the seismic performance of structure efficiently. Some of them contain such complicated procedure that may difficultly apply to practical engineering. Therefore, in this study, we primarily focus on the simple way to find the optimal placement of linear viscous dampers and nonlinear viscous dampers.

Existing distribution method will be discussed in this thesis. In addition, the purpose of two distribution methods is proposed by our research group is to make dampers dissipate the maximum energy.

Different kinds of optimal damper placement methods such as Simplified Sequential Search Algorithm (SSSA), Element Exchange method (EEM) and distribution methods have been applied to different shear type buildings and three-dimensional asymmetric-plan buildings. Moreover, the results have been examined by ground motion records and artificial ground motions. Finally, statistical methods are used to demonstrate that the applicability of each optimal damper placement method for different kinds of buildings under a series of ground motion records and artificial ground motions.

並列關鍵字

linear viscous dampers ； nonlinear viscous dampers ； optimal placement of dampers ； shear type buildings ； three-dimensional asymmetric-plan buildings

參考文獻

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