MTMD系统抗震控制研究  

SEISMIC CONTROL OF STRUCTURE WITH MULTIPLE TUNED MASS DAMPER SYSTEM

作　　者：刘保东[1] 朱晞[1] 

机构地区：[1]北方交通大学土木建筑工程学院,北京100044

出　　处：《工程力学》2003年第1期127-130,136,共5页Engineering Mechanics

基　　金：国家自然科学基金资助项目(59678027)

摘　　要：MTMD利用一组频率分布在结构被控模态频率周围的单TMD控制结构的振动,它可以克服单TMD控制效果不稳定,适用激励频带过窄的缺点。研究了多自由度结构附加MTMD后的频率响应特性,计算了不同频谱特性的地震激励下MTMD系统的时程响应。通过计算和分析表明,MTMD系统可以增大单TMD抗震控制的适用范围,增强控制效果的鲁棒性;MTMD系统的设计需考虑结构所处的建筑场地条件,并应根据结构的具体情况优化选择MTMD系统的参数。The multiple tuned mass dampers (MTMD) consist of a group of single tuned mass damper (STMD) and the frequencies of the STMD group are distributed around the frequency of the controlled mode of the structure. The MTMD can overcome the disadvantage of instability of the control effect of the STMD and can enlarge the controllable frequency range of the STMD. The characteristics of frequency response of the multiple degrees structures with appending MTMD are studied. The time-history responses of the MTMD system excited by seismic waves under different site conditions are calculated. The theoretic analysis and simulating results show that the MTMD system can enlarge the applicable scope of seismic control of the STMD system and enhance the robustness of the control effect. It is concluded that the design of the MTMD system must take into consideration of the influence of the site conditions and the optimal selection of the parameters of the MTMD system must take into consideration of the specific conditions of the structure.

关 键 词：MTMD系统 抗震控制 抗震设计 结构振动控制 调谐质量阻尼器 

分 类 号：O328[理学—一般力学与力学基础]