磁流变阻尼器在基础智能隔震建筑中的研究

针对橡胶隔震垫作为一种被动控制装置，存在最优控制范围窄的局限性。将磁流变阻尼器与橡胶隔震垫相结合，组成智能基础隔震系统应用于结构振动控制中，数值模拟分析了在地震力作用下原结构，普通隔震结构，隔震层附加MR阻尼器在Passive—off状态，Passive—on状态和磁流变阻尼器半主动智能状态下结构的反应。试验结果表明，结构在磁流变阻尼器半主动智能状态下控制效果最优，能有效克服被动隔震最优控制频带窄的缺点，其相对一般被动隔震装置，能同时减小隔震层位移，上部结构层间位移和各层最大加速度。

RESEARCH ON INTELLIGENT BASE-ISOLATION BASED ON MR DAMPER

For the rubber isolation pads as a passive control device,there are limitations of a narrow range of optimal control. In this paper the smartbase isolation system,which is combined with rubber bearing and MR damper,is applied to structural vibration control, and has numerical simulation of the original structure, the general base-isolated structure ,the structure in the isolation layer attached MR damper in Passive-off state, Passive-on state and semi- active state response under seismic forces. The results show that structure in the MR Damper in the semi-active mental state, the optimal control effect, can effectively overcome the narrow-band passive isolation shortcomings of optimal control, compared with the passive isolation device that can reduce the displacement of isolation layer,the upper layers of the structure layer displacement and maximum acceleration.