地震作用下偏心结构最优ATMD控制的冲程评价
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摘要
评价了偏心结构主动调谐质量阻尼器(ATMD)减震时的冲程。基于建立的地震地面运动模型下偏心结构动力方程及其状态空间方程,ATMD最优参数的评价准则定义为设置ATMD结构的最大位移动力放大系数的最小值的最小化。ATMD有效性评价准则定义为设置ATMD结构的最大位移动力放大系数的最小值的最小化与未设置ATMD结构的最大位移动力放大系数之比。ATMD冲程的评价准则定义为:ATMD相对位移的最大位移动力放大系数。使用定义的评价准则,首先获得ATMD的最优参数,进而评价ATMD的冲程。
Evaluation has been made on the stroke of active tuned mass dampers(ATMD)for eccentric structure under earthquake.Based on the developed dynamic equations and the corresponding space-state equations of eccentric structure with ATMD,the criterion used for estimating the ATMD optimum parameters is defined as the minimization of minimum values of maximum displacement dynamic magnification factors of eccentric structure with ATMD.The criterion used to evaluate the effectiveness of ATMD is the ratio of the minimum of minimum values of maximum displacement dynamic magnification factors of structure with ATMD to that without ATMD.Evaluation criterion for the stroke of ATMD is selected as the maximum dynamic magnification factor of its relative displacement to the structure.The ATMD optimum parameters may be obtained first and then,the evaluation is carried out on the stroke of ATMD.
Evaluation has been made on the stroke of active tuned mass dampers(ATMD)for eccentric structure under earthquake.Based on the developed dynamic equations and the corresponding space-state equations of eccentric structure with ATMD,the criterion used for estimating the ATMD optimum parameters is defined as the minimization of minimum values of maximum displacement dynamic magnification factors of eccentric structure with ATMD.The criterion used to evaluate the effectiveness of ATMD is the ratio of the minimum of minimum values of maximum displacement dynamic magnification factors of structure with ATMD to that without ATMD.Evaluation criterion for the stroke of ATMD is selected as the maximum dynamic magnification factor of its relative displacement to the structure.The ATMD optimum parameters may be obtained first and then,the evaluation is carried out on the stroke of ATMD.
引文
[1]Ankireddi S,Yang HTY.Simple ATMD control methodology for tall buildings subject to wind loads[J].Journal of Structur-al Engineering,ASCE1996,122(1):83—91.
[2]李春祥.结构基于绝对加速度完整反馈ATMD控制[J].振动与冲击,2003,22(2):47—49.
[3]李春祥.基于刚度-阻尼器ATMD模型的性能评价[J].振动与冲击,2004,23(3):14—16,28.
[4]Nishitani A,Inoue Y.Overview of the application of active/semiactive control to building structures in Japan[J].Earth-quake Engineering and Structure Dynanics,2001,30:349—362.
[5]江宜城,唐家祥.单轴偏心的单层隔震框架结构地震扭转反应分析[J].世界地震工程,1999,15(4):57—61.
[2]李春祥.结构基于绝对加速度完整反馈ATMD控制[J].振动与冲击,2003,22(2):47—49.
[3]李春祥.基于刚度-阻尼器ATMD模型的性能评价[J].振动与冲击,2004,23(3):14—16,28.
[4]Nishitani A,Inoue Y.Overview of the application of active/semiactive control to building structures in Japan[J].Earth-quake Engineering and Structure Dynanics,2001,30:349—362.
[5]江宜城,唐家祥.单轴偏心的单层隔震框架结构地震扭转反应分析[J].世界地震工程,1999,15(4):57—61.
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