地震卓越频率(EDF)对主动调谐质量阻尼器抗震控制设计的影响评价

Assessment of influence of earthquake dominant frequency on active tuned mass damper resistant control design

基于Kanai Tajimi地震动模型,建立了设置主动调谐质量阻尼器(ATMD)结构的传递函数。于是,ATMD最优参数的评价准则定义为:设置ATMD结构的最大动力放大系数的最小值的最小化。ATMD有效性的评价准则定义为:设置ATMD结构的最大动力放大系数的最小值的最小化与未设置ATMD结构的最大动力放大系数之比。ATMD冲程的评价准则定义为:ATMD的最大动力放大系数。基于选择的评价准则,研究了地震卓越频率(EDF)对ATMD在控制结构位移响应时的最优参数、有效性和冲程的影响。

Based on the Kanai-Tajimi model for ground motions,the transfer functions are formulated for the structure with Active Tuned Mass Damper(ATMD).The criterion for the ATMD optimum parameters can then be defined as the minimization of the minimum values of the maximum dynamic magnification factors(DMF)of the structure with the ATMD.The criterion used to evaluate the effectiveness of the ATMD is the ratio of the minimization of the minimum values of the maximum DMF of the structure with the ATMD to the maximum DMF of the structure without the ATMD.The criterion used to assess the ATMD stroke is the maximum DMF of the ATMD.Employing the criteria defined above,parametric studies for the effects of earthquake dominant frequency(EDF)are then carried out on the optimum parameters,effectiveness,and stroke of the ATMD in reducing the displacement response of structures.