隔震結構系統遇近斷層地震會產生較大之隔震位移，容易造成隔震元件破壞或結構傾覆。本研究開發一種新型阻尼器，稱為「旋轉液態黏滯阻尼器」，透過直線運動轉換成旋轉運動的機制，將阻尼器的速度放大數倍，以期在速度小的情形仍能提供足夠的阻尼力。本研究中透過不同頻率及不同振幅之正弦波進行實驗測試，考慮旋轉阻尼器的物理性質，開發其物理的數值模型。此外，使用生物共生演算法進行數值模型的參數識別最佳化，並透過隨機波驗證其模型之正確性。
本研究使用即時複合實驗，驗證含有旋轉液態黏滯阻尼器之隔震結構的受震行為，以大幅降低結構試體製作之成本和時間。以狀態空間線性模型模擬隔震結構，作為複合實驗中的數值子結構，旋轉液態黏滯阻尼器做為實驗子結構。在每個積分步中得到數值子結構的隔震層相對位移，以此位移作為致動器命令驅動阻尼器，在將其阻尼力傳回至隔震結構之隔震層。實驗結果顯示，旋轉液態黏滯阻尼器可有效降地隔震結構受近斷層作用時隔震層之相對位移。

It is realized that large deformation of seismic isolation devices is expected when the isolated building is subjected to a near-fault earthquake, resulting in damage to the building. Therefore, a novel rotary fluid viscous damper is proposed in this study. The numerical model of the rotary damper is developed and proposed based on the physical properties of the damper mechanism. The parameters of the numerical model are identified through the experimental data of sinusoidal tests with different frequencies and amplitudes. Meanwhile, the Symbiotic Organisms Search (SOS) algorithm is applied to optimize the parameters of the numerical model. Finally, the accuracy of the model is evaluated through validating tests with random waves.
Real-time hybrid simulation (RTHS) has been demonstrated effective in verifying the seismic behavior of buildings subjected to earthquakes. In this study, RTHS is applied to evaluate the seismic performance of a base-isolated building with the rotary fluid viscous dampers installed at the isolation layer. In the RTHS, the base-isolated building is numerically simulated representing by a linear state-space model, while the rotary fluid viscous damper is experimentally tested in the laboratory. At each integration time step, the relative displacement of the isolation layer is treated as the desired displacement of the actuator. The actuator then drives the damper and the damping force is measured and transmitted back to the numerical substructure. Experimental results show that the proposed rotary fluid viscous damper can effectively reduce the deformation of isolation devices when the isolated building is subjected to near-fault earthquakes.

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