采用复刚度阻尼TMD进行结构风振控制的优化设计.doc

文档介绍：
采用复刚度阻尼 TMD 进行结构风振控制的
优化设计#
彭凌云,康迎杰,薛涛*
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(北京工业大学工程抗震与结构诊治北京市重点实验室,北京 100124)
摘要:对具有复刚度阻尼特征的调频质量阻尼器(TMD)减振结构在简谐风荷载激励和平
稳随机过程激励下的稳态响应进行了分析,以主结构位移振幅最小为优化条件,推导了 TMD
的复刚度阻尼参数和频率最优参数的理论公式,并与粘滞阻尼条件下对应的结果进行了对
比。研究结果表明:复刚度阻尼 TMD 的减振效果非常接近于粘滞阻尼对应的结果,在应用
TMD 减振技术时,采用复刚度阻尼也是一种有益的选择方案。
关键词:复刚度阻尼;TMD;稳态响应;随机振动
中图分类号:TU973
Optimum design for tuned mass damper system with
complex stiffness damping excited by wind
PENG Lingyun, KANG Yingjie, XUE Tao
(Beijing University of Technology Beijing key Lab of Earthquake Engineering and Structural
Retrofit Beijing 100124,China)
Abstract: Steady state response of structure including tuned mass damper (TMD) with
characteristics plex stiffness damping disturded by harmonic wind excitation and stationary
random process wind excitation were analyzed. the theory formula of optimum value plex
strffness damping and frequency of the TMD was deduced to attain the minimum displacement
amplitude of main structure, and pared with the corresponding results of TMD with
viscous damping. the results show that the control effection of TMD plex stiffness
damping is very closely to the corresponding results of TMD with viscous damping. So, the
complex stiffness damping also is a very good options when the TMD being adopt in engineering.
Key words: complex stiffness damping; TMD; steady state response;random vibratio