主动调谐质量阻尼器对不规则建筑的减震行为研究
|
摘要
研究了不规则建筑主动调谐质量阻尼器(ATMD)减震的行为。基于建立的地震地面运动模型下不规则建筑-ATMD系统的状态空间方程,定义ATMD的最优参数准则为:设置ATMD不规则建筑的最大平动和扭转角位移动力放大系数最小值的最小化。评价ATMD有效性的准则定义为:设置ATMD不规则建筑的最大位移动力放大系数最小值的最小化与未设置ATMD不规则建筑的最大位移动力放大系数之比。使用定义的准则,研究了不规则建筑的标准化偏心系数(NER),扭转对侧向频率比(TTFR)及地震卓越频率(DGF)对ATMD控制不规则建筑位移响应时的最优参数和有效性的影响。
The main objective here is to investigate the behaviors of active tuned mass dampers(ATMD) for an asymmetric building under earthquake.Based on the space-state equation of the asymmetric building with ATMD,the criterion for searching the optimum parameters of ATMD then is defined as the minimization of the minimum values of the maximum displacement dynamic magnification factors of the asymmetric building with ATMD.The criterion for assessing the effectiveness of the ATMD is the ratio of the minimization of the minimum values of the maximum displacement dynamic magnification factors of the asymmetric building with the ATMD to the maximum displacement dynamic magnification factors of the asymmetric building without ATMD,using the optimum parameters obtained in reducing the displacment responses of the asymmetric building.Employing the above-defined criteria,the parametric studies then are carried out to find the influences of the normalized eccentricity ratio(NER),the torsional to translational frequency ratio(TTFR) of the asymmetric building,and the dominant ground frequencies(DGF) on the optimum parameters and effectiveness of the ATMD.
The main objective here is to investigate the behaviors of active tuned mass dampers(ATMD) for an asymmetric building under earthquake.Based on the space-state equation of the asymmetric building with ATMD,the criterion for searching the optimum parameters of ATMD then is defined as the minimization of the minimum values of the maximum displacement dynamic magnification factors of the asymmetric building with ATMD.The criterion for assessing the effectiveness of the ATMD is the ratio of the minimization of the minimum values of the maximum displacement dynamic magnification factors of the asymmetric building with the ATMD to the maximum displacement dynamic magnification factors of the asymmetric building without ATMD,using the optimum parameters obtained in reducing the displacment responses of the asymmetric building.Employing the above-defined criteria,the parametric studies then are carried out to find the influences of the normalized eccentricity ratio(NER),the torsional to translational frequency ratio(TTFR) of the asymmetric building,and the dominant ground frequencies(DGF) on the optimum parameters and effectiveness of the ATMD.
引文
[1]Bozorgnia Y,Tso W K.Inelastic earthquake response of asym-metric structures[J].Journal of Structural Engineering,ASCE 1986,112(2):383—399.
[2]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.
[3]Ankireddi S,Yang HTY.Simple ATMD control methodologyfor tall buildings subject to wind loads[J].Journal of Struc-tural Engineering,ASCE 1996,122(1):83—91.
[4]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.
[5]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.
[6]李春祥,韩兵康,张丽卿.地震作用下偏心结构最优ATMD控制的冲程评价[J].振动与冲击,2007,26(6):41—46.
[7]Nishitani A,Inoue Y.Overview of the application of active/semiactive control to building structures in Japan[J].Earth-quake Engineering and Structure Dynamics,2001,30:349—362.
[8]Li Chunxiang,Qu Weilian.Optimum properties of multipletuned mass dampers for reduction of translational and torsionalresponse of structures subject to ground acceleration[J].En-gineering Structures,2006,28(4):472—494.
[9]张丽卿.非对称结构主动单个和多重调谐质量阻尼器减震的行为[D]:[学位论文].上海:上海交通大学,2006.
[2]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.
[3]Ankireddi S,Yang HTY.Simple ATMD control methodologyfor tall buildings subject to wind loads[J].Journal of Struc-tural Engineering,ASCE 1996,122(1):83—91.
[4]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.
[5]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.
[6]李春祥,韩兵康,张丽卿.地震作用下偏心结构最优ATMD控制的冲程评价[J].振动与冲击,2007,26(6):41—46.
[7]Nishitani A,Inoue Y.Overview of the application of active/semiactive control to building structures in Japan[J].Earth-quake Engineering and Structure Dynamics,2001,30:349—362.
[8]Li Chunxiang,Qu Weilian.Optimum properties of multipletuned mass dampers for reduction of translational and torsionalresponse of structures subject to ground acceleration[J].En-gineering Structures,2006,28(4):472—494.
[9]张丽卿.非对称结构主动单个和多重调谐质量阻尼器减震的行为[D]:[学位论文].上海:上海交通大学,2006.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心