【摘要】 针对基础隔震局限于减小地震波高频成分对结构影响的缺点,将磁流变(MR)阻尼器与滚动隔震支座相结合形成MR智能基础隔震系统并应用到结构控制中。基于MR阻尼器的Sigmoid模型,进行模糊半主动控制策略设计。在不同种类不同强度的地震波作用下,对智能基础隔震控制下2层钢框架结构的反应进行了仿真分析。结果表明,MR智能基础隔震系统是一种可靠而有效的控制系统,模糊半主动控制策略能够有效控制结构的地震反应。更多还原

【Abstract】 According to the disadvantages of the effects that base isolation is limited to high frequency components of seismic wave,smart base isolation system consisting of rolling isolation bearing and magnetorheological(MR) damper is applied to structural vibration control.Based on magnetorheological damper employing a Sigmoid model,a fuzzy semi-acive control strategy suitable for smart base isolation is presented.Simulation analysis is carried out to a two-story steel frame structure employing smart base isolation in the action of different kinds and magnitudes of earthquake wave.The results show that smart base isolation system is reliable and effective,and seismic response can be controlled effectively by fuzzy semi-active control strategy.更多还原