地震作用下不规则建筑AMTMD控制的动力特性-Ⅰ:平动振动控制
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摘要
主动多重调谐质量阻尼器(AMTMD)最优参数准则定义为:设置AMTMD不规则建筑的最大平动位移动力放大系数最小值的最小化。AMTMD有效性准则定义为:设置AMTMD不规则建筑最大平动位移动力放大系数最小值的最小化与未设置AMTMD不规则建筑最大平动位移动力放大系数之比。使用定义的准则,研究了不规则建筑标准化偏心系数(NER)和扭转对侧向频率比(TTFR)对AMTMD控制不规则建筑平动位移时的最优参数和有效性的影响。
The performance of active multiple tuned mass dampers(AMTMD) for eccentric structures subjected to ground acceleration is investigated. The optimum criterion for AMTMD optimum parameters are defined as the minimization of minimum values of maximum displacement(including the lateral and torsional displacement)dynamic magnification factors of an eccentric structure with AMTMD system. Evaluation criterion for the effectiveness of AMTMD system is the ratio of the minimization of minimum values of maximum displacement dynamic magnification factors of eccentric structure with AMTMD system to that without AMTMD system. With resorting to the evaluation criteria above defined, the influences of normalized eccentricity ratio(NER) and torsional to translational frequency ratio(TTFR) of eccentric structure are discussed on the optimum parameters and effectiveness of AMTMD system.
The performance of active multiple tuned mass dampers(AMTMD) for eccentric structures subjected to ground acceleration is investigated. The optimum criterion for AMTMD optimum parameters are defined as the minimization of minimum values of maximum displacement(including the lateral and torsional displacement)dynamic magnification factors of an eccentric structure with AMTMD system. Evaluation criterion for the effectiveness of AMTMD system is the ratio of the minimization of minimum values of maximum displacement dynamic magnification factors of eccentric structure with AMTMD system to that without AMTMD system. With resorting to the evaluation criteria above defined, the influences of normalized eccentricity ratio(NER) and torsional to translational frequency ratio(TTFR) of eccentric structure are discussed on the optimum parameters and effectiveness of AMTMD system.
引文
[1]李春祥.多重调谐质量阻尼器控制单层非对称结构扭转振动的设计参数[J].振动与冲击,2005,24(1):118—120.
[2]Li Chunxiang,Liu Yanxia,Wang Zhaomin.Active multiple tuned mass dampers:a new control strategy.Journal of Struc-tural Engineering,ASCE2003,129(7):972—977.
[3]Li Chunxiang,Qu Weilian.Optimum properties of multiple tuned mass dampers for reduction of translational and torsional response of structures subject to ground acceleration.Engineer-ing Structures2006;28(4):472—494.
[4]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:[学位论文].上海:上海交通大学,2006.
[2]Li Chunxiang,Liu Yanxia,Wang Zhaomin.Active multiple tuned mass dampers:a new control strategy.Journal of Struc-tural Engineering,ASCE2003,129(7):972—977.
[3]Li Chunxiang,Qu Weilian.Optimum properties of multiple tuned mass dampers for reduction of translational and torsional response of structures subject to ground acceleration.Engineer-ing Structures2006;28(4):472—494.
[4]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:[学位论文].上海:上海交通大学,2006.
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