基于最优二级阻尼的TMD设计以及控制效果分析

摘要

调谐质量阻尼器(TMD)作为一种被动控制装置,常设置在高耸结构中来控制结构的风振响应.同时,该控制装置安装在实际结构上时存在空间位置有限、TMD行程受限的问题.针对以上问题提出TMD控制装置设置二级阻尼的优化方法.利用Den Hartog公式优化TMD一级阻尼参数;运用遗传算法优化TMD二级阻尼参数.然后,采用频域分析方法对脉动风作用下的高耸结构-TMD体系作随机风振响应分析.结果表明:提出的最优二级阻尼优化设计方法能够使主结构风振响应得到较好的控制,同时能很好的限制TMD的行程.%Tuning quality damper(TMD),a passive control device,is usually designed in high-rise structure to control structural wind-induced vibration response.In the same time,when it is installed in the real structure,there is the problem that the spatial location is limited and TMD journey is limited.For the above problems,the optimal method that TMD device set secondary damping is put forward.The Den Hartog formula is used to optimize the first level TMD so as to analyze randomly wind-induced vibration response.Then,use frequency-domain analysis to analysis wind-induced vibration response of high-rise structure under fluctuating wind.The result shows that the optimal secondary damping design method can control wind-induced vibration response of main structure,as well as limit TMD journey.