地震作用下不规则建筑ATMD控制的动力特性研究
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摘要
主要研究地震作用下不规则建筑主动调谐质量阻尼器(ATMD)控制的动力特性。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。基于定义的准则,研究了不规则建筑的标准化偏心系数(NER)和扭转对侧向频率比(TTFR)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 criterion for seaching the opirnum parameters of the ATMD is defined as the minimization of the minimum values of the maximum translational and torsional displacement dynamic magnification factors of an asymmetric building with ATMD. The crierion for assessing the effectiveness of the ATMD is selected as the ratio of the minmum of the minimum values of the maximum displacement dynamic magnification factors of the asymmetric building with ATMD to the maximun sisplacement dynamic magnification factor of the asymmetric building without ATMD. With resorting to two criteria above defined, the influences of the normalized eccentricity ratio (NER) and torsional to translational frequency ratio (TTFR)of the asymmetric building on the optimum parameters and the effectiveness of ATMD are discussed.
The criterion for seaching the opirnum parameters of the ATMD is defined as the minimization of the minimum values of the maximum translational and torsional displacement dynamic magnification factors of an asymmetric building with ATMD. The crierion for assessing the effectiveness of the ATMD is selected as the ratio of the minmum of the minimum values of the maximum displacement dynamic magnification factors of the asymmetric building with ATMD to the maximun sisplacement dynamic magnification factor of the asymmetric building without ATMD. With resorting to two criteria above defined, the influences of the normalized eccentricity ratio (NER) and torsional to translational frequency ratio (TTFR)of the asymmetric building on the optimum parameters and the effectiveness of ATMD are discussed.
引文
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[4]李春样,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.
[5]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.
[6]Li Chunxiang,Qu Weilian.Optimum properties of multiple tuned mass dampers for reduction of translational and torsional response of structures Subject to ground acceleration[J].Engi-neering Structures,2006;28(4):472—494.
[7]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]李春样.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.振动与冲击,2004;23(3):14—16,28.
[4]李春样,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.
[5]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.
[6]Li Chunxiang,Qu Weilian.Optimum properties of multiple tuned mass dampers for reduction of translational and torsional response of structures Subject to ground acceleration[J].Engi-neering Structures,2006;28(4):472—494.
[7]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.
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