- 學位論文
連棟結構物被動與半主動控制研究
Couple Structures Control Using Passive Control and Semi-Active Control
摘要
摘要 相鄰的結構物之間加裝一個額外的阻尼器是一個可行且可以有效降低地震反應的方法，在此報告中研究兩棟中間彼此相連的結構外加一個磁流變阻尼器用以降低地震反應。首先我們利用Bouc-Wen模型以不同的固定電壓對應到不同的遲滯迴圈模擬磁流變阻尼器控制，探討模擬不同地震力之下兩個單自由度結構系統受不同地震力下的反應。 從數值模擬來瞭解結構的特性，最後再由NCREE國家地震中心架設兩棟不同樓層結構，一個為六層樓另一個為八層樓的連結控制來探討磁流變阻尼器的控制效果，使用了包含被動控制伏特關閉、被動控制伏特全開，及半主動控制方法。 如果掌握阻尼特性及結構系統特性如：質量、系統自然震動頻率等…。根據震動台詴驗我們可以觀察到磁流變阻尼器是一個有效控制兩棟結構物反應的控制裝置。
並列摘要
Abstract Coupling adjacent buildings with supplemental damping devices are a practical and an effective approach to mitigating structural seismic response. In this report two interconnecting adjacent structures supplemented with MR-dampers to reduce the seismic responses are studied.. In the beginning, we use the Bouc-Wen model differential hysteresis model to simulate the MR-damper (3kN) with constant voltage, a random seismic response analysis method for adjacent structures (each was modeled as a single-degree-of- freedom system) coupled with non-linear hysteretic dampers under non-white earthquake excitation is examined. Through parametric study the features of structural system were examined. Finally, the effectiveness of implementation of MR-damper to the coupling adjacent building is examined for seismic response mitigation on NCREE shaking table test, The two interconnected structure are: one is 6-story and the other is 8-story steel structure, under coupled building control scheme, involving passive-off, passive-on and semi-active control strategies are examined. Based on the shaking table test, it is observed that installation of MR-damper in the coupling adjacent buildings is a method to control the structural responses of both buildings if the damper capacity and the building characteristics (such as mass, system natural frequency, etc.) are carefully examined.