窗型調和質量阻尼器在結構減震控制上之應用

Earthquake Response Control of Building Using Skin Facades

丁柏廷(Bo-Ting Ding)

指導教授 ： 羅俊雄

國立臺灣大學/工學院/土木工程學研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.00587

摘要

本文以高樓外帷幕窗的構想，設計窗型調和質量阻尼器，目的為降低結構物第一模態的振動，達到制振的效果，在窗型版晃動的過程中，同時可調節空氣的流動，達到節能減碳的目的。一組窗型調和質量阻尼器包含一片窗型版及兩支液態黏性阻尼器。窗型版的擺動可提供結構物額外的勁度，窗型版上可供放置額外質量塊，增加額外質量，不同的質量可調整窗型版產生不同的擺動頻率，不同的擺動頻率對應不同的窗型版重量可產生不同的勁度。兩支液態黏性阻尼器做為窗型版擺動時消能的裝置，此窗型調和質量阻尼器和傳統的調和質量阻尼器概念類似，同樣都有一消能裝置及提供勁度的質量塊。試驗共進行三種不同的窗型調和質量阻尼器配置方式，並以EL Centro, Kobe及Chi-Chi TCU129等地震作為基底的輸入外力進行振動台試驗，進行振動台試驗前先進行液態黏性阻尼器的性能測試，以回歸方式求得液態黏性阻尼器的阻尼常數及非線性係數，並以ETABS有限元素分析軟體模擬控制效果。本文以國家地震工程研究中心的8層樓剪力構架作為試驗的結構，裝載本文所提出的窗型調和質量阻尼器後，結構物的擺動可獲得控制，並以子空間識別法識別窗型調和質量阻尼器的動態特性及結構物動態特性的改變，最後以ETABS有限元素分析軟體模擬最佳化的設計參數來改善此窗型調和質量阻尼器的機構。

關鍵字

skin facades ； 窗型調和質量阻尼器

並列摘要

This research designs a type of skin facade (SF system) to control 1st mode vibration of primary structure. Three experimental cases are conducted in order to compare the control effectiveness of each case. A set of SF system consists of a window-shaped plate and two viscos dampers. The vibration of the window-shaped plate can provide additional stiffness to the primary structure. The window-shaped plate can be installed additional mass to tune the vibration frequency. Thus, the stiffness provided by SF system can be altered. The installment of two viscos dampers can provide additional damping to the primary structure. The concept of this SF system is similar to the conventional tuned mass dampers. Both systems contain a dashpot system to absorb energy. Furthermore, the vibration of the window-shape plate can also regulate the atmosphere and make this SF system more eco-friendly. The primary structure is NEREE’s eight-floor shear frame building. Three cases are conducted on shaking table. The EL Centro, Kobe, and TUC129 excitations are used for shaking table test. Performance test of viscos dampers are conducted before shaking table test to identify damping coefficient. Use subspace identification method to identify the dynamic properties of SF systems and compare the results with each case. The primary structure motion can be substantially reduced by SF systems introduced in this research. However, some case’s control effectiveness is limited. Investigating the inferior case and the perfect case by analyzing transfer function of SF system can find difference between two cases and give a reasonable explanation. Further research is required for adjust the mechanism of the SF system to make the control effectiveness more effective.

並列關鍵字

skin facade ； tuned mass damper

參考文獻

[11] 羅俊雄，翁健煌(2010)，子空間識別法於系統識別及結構損壞診斷之應用，國立台灣大學土木工程學系博士論文。

[1] Moon,K.,(2005). “Dynamic interrelationship between technology and architecture in tall buildings.” Ph.D. dissertation, Dept. of Architecture, Messachusetts Institute of Technology, Cambridge, Mass.

[2] Moon, K.,(2009). “Tall Building Motion Control Using Double Skin Facades.” ,J. Archit. Eng. ASCE1076-0431.

[3] Smith, R. J., and Willford, M. R.,(2007). “The damped outrigger concept for tall buildings.” Struct. Des. Tall Spec. Build., 164, 501–517.

[7] Rahul, Rana and Soong, T. T.,(1998) “Parametric study and simplified design of tuned mass dampers” Engineering Structures, Vol. 20, No. 3, pp. 193-204