论文部分内容阅读
建筑结构的主动控制和被动控制可以有效地减少地震荷载时结构的动力反应。被动隔震控制已被广泛应用于实际的结构控制。为了进一步降低结构震动,主动控制无疑是一种比较理想的方法,它对于提高结构抵抗外界激励不确定性的能力,直接减少输入的干扰,以及在震动发生时连续自动的调整结构动力特性方面均优于被动控制。通过试验对建筑结构主动隔震控制进行研究,试验在伊利诺伊大学香槟分校的智能实验室进行。试验模型是3层2跨的剪切型结构,设置在底层的3个伺服千斤顶提供不超过2%建筑自重的控制力,控制结构的面内运动(X方向,Y方向和XY平面内的转动)。试验结果表明该控制技术不仅可以有效的控制基础隔震层的位移,而且可以控制基底剪力在5%结构自重以内。
The active control and passive control of the building structure can effectively reduce the dynamic response of the structure under earthquake load. Passive isolation control has been widely used in practical structural control. In order to further reduce the structural vibration, active control is undoubtedly an ideal method to improve the structure to resist the external excitation uncertainty, directly reduce the input interference, as well as the vibration occurs automatically and continuously adjust the structural dynamic characteristics Better than passive control. Through experiment, the active isolation control of building structure is studied, and the experiment is carried out at the intelligent laboratory of University of Illinois at Urbana-Champaign. The test model is a three-story, two-span shear structure with three servo jacks on the ground floor providing control of no more than 2% of the building’s deadweight and controlling the in-plane movement of the structure (rotation in X, Y and XY planes ). The experimental results show that the control technology not only can effectively control the displacement of the basement isolation layer, but also can control the base shear within 5% of the weight of the structure.