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在边界层风洞试验中应用气弹模型技术对深圳京基金融中心(KFT)进行风振控制试验,通过在KFT顶层设计安装悬臂式调谐质量阻尼器(TMD)对结构横风向风振响应进行控制,研究了不同TMD参数对控制效果的影响,并将试验结果和基于刚性模型的高频压力积分(HFPI)计算结果进行比较。结果表明:使用TMD能有效抑制KFT的风致振动响应,当TMD频率接近结构1阶自振频率时,减振效果最佳,且由于结构阻尼的存在,最佳TMD频率略小于结构自振频率;TMD阻尼比为3.86%和1.67%时,结构顶层加速度响应分别减小20%和15%,而TMD阻尼比不大于0.07%时则可能对结构风致振动响应的控制不起作用。
In the boundary layer wind tunnel test, the aeroelastic model was applied to test the wind-induced vibration control of Shenzhen Kingbase Financial Center (KFT). Through the design and installation of the cantilever tuning mass damper (TMD) at the top of the KFT, the wind-induced wind vibration response The influence of different TMD parameters on the control effect was studied and compared with the results of HFPI calculation based on the rigid model. The results show that the TMD can effectively suppress the wind induced vibration response of the KFT. When the TMD frequency approaches the natural frequency of the first order structure, the damping effect is the best. Due to the structural damping, the optimal TMD frequency is slightly less than the natural frequency of the structure. When TMD damping ratio is 3.86% and 1.67%, the top layer acceleration response is reduced by 20% and 15% respectively, while TMD damping ratio is not greater than 0.07%, it may not be effective in controlling wind-induced vibration response.