复摩擦摆支座应用于楼面隔震研究

对复摩擦摆支座在楼面隔震中的应用进行了研究.在长期使用过程中,隔震楼板的上部质量可能发生较大变化,考虑到摩擦摆支座自身隔震周期与上部质量无关的特性以及复摩擦摆支座相较于单曲面摩擦摆支座更好的隔震效益,因此推荐复摩擦摆支座用作楼面隔震支座.为控制隔震楼板相对结构楼面的位移,可通过提高复摩擦摆支座的摩擦系数或附加粘滞阻尼器而实现.以一工程实例为背景,对比研究粘滞阻尼器+低摩擦系数复摆支座方案与高摩擦系数复摆支座的隔震效果,发现前一方案 可以保证不同加速度水平作用下隔震楼面的隔震效果,是一种较好的隔震配置组合.

Study on Floor Isolation with Multiple Friction Pendulum System

Floor isolation with multiple friction pendulum system(MFPS) has been researched in the paper.In the process of its usage,the mass on the isolated floor may change a lot.Because the isolated period of FPS does not depend on the upper mass and the efficiency of the MFPS is better than FPS,MFPS is a recommended isolator using in floor isolation.To control the displacement between the isolated floor and the structural floor,the friction coefficient of MFPS can be increased and viscous dampers can be combined with MFPS.With the background of an engineering project,two floor isolation schemes that are MFPSs of low friction coefficient combined with viscous dampers and MFPSs of high friction coefficient were compared.It was found that the former scheme has better performance in different level earthquakes.