地震作用下不规则建筑ATMD控制的动力特性研究  

CHARACTERISTICS OF ACTIVE TUNED MASS DAMPER FOR ASYMMETRIC BUILDINGS UNDER GROUD ACCELERATION

作　　者：李春祥[1] 朱碧蕾[1] 张丽卿[2] 

机构地区：[1]上海大学土木工程系,上海200072 [2]上海交通大学土木工程系,上海200030

出　　处：《振动与冲击》2007年第12期88-95,共8页Journal of Vibration and Shock

基　　金：上海市教委资助项目(No.212652)

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.

关 键 词：主动调谐质量阻尼器 振动控制 不规则建筑 最优参数 动力特性 

分 类 号：TU311[建筑科学—结构工程]