负刚度惯性阻尼器控制高层结构振动的试验与模拟研究  

Tests and simulations on the vibration control of a high-rise structure with a tuned viscous mass damper with negative stiffness

作　　者：赵玮伟 全涌[1] ZHAO Weiwei;QUAN Yong(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程防灾减灾全国重点实验室,上海200092

出　　处：《振动与冲击》2025年第2期167-176,共10页Journal of Vibration and Shock

基　　金：国家自然科学基金(51778493);土木工程防灾国家重点实验室自主课题(SLDRCE19-A-05,SLDRCE19-B-13)。

摘　　要：建立了控制多自由度高层建筑风致振动的负刚度惯性调谐阻尼器(negative stiffness-tuned viscous mass damper, NS-TVMD)系统的理论模型,通过3D打印技术设计制造了以齿轮齿条式惯容器元件和预压弹簧式负刚度元件组装而成的NS-TVMD系统,并将该系统安装在一个6自由度高层建筑气动弹性模型上进行了风洞试验研究。然后通过数值模拟和试验结果相互验证,并分析得到了NS-TVMD的最优参数。结果表明,准确调谐的NS-TVMD系统比传统调谐惯性黏滞阻尼器系统对高层建筑的风致振动具有更好的控制效果。由于负刚度组件在静态情况下具有高刚度,而在动态情况下具有低刚度,当NS-TVMD系统被调频至受控结构的一阶自振频率附近时,它不仅能有效控制结构的一阶模态响应,还能通过其低动态刚度特性控制结构的高阶模态响应。The theoretical model of a tuned viscous mass damper with negative stiffness-tuned viscous mass damper(NS-TVMD)system for controlling wind-induced vibrations of a multi-degree-of-freedom model was established.The NS-TVMD system was designed and manufactured using 3D printing technology,incorporating a gear-rack inerter device and a pre-compressed spring negative stiffness device.The system was installed on a 6-degree-of-freedom high-rise building aeroelastic model for wind tunnel testing.Numerical simulations and experimental results were cross-validated to determine the optimal parameters for the NS-TVMD.The results indicate that the accurately tuned NS-TVMD system exhibits better control ability on the wind-induced vibrations in high-rise buildings compared to traditional tuned viscous mass damper systems.Because the negative stiffness system exhibits high stiffness in static conditions and low stiffness in dynamic conditions,tuning the NS-TVMD system’s frequency to conform to the first natural frequency of the controlled structure effectively controls not only the first modal response but also the higher modal responses.

关 键 词：惯性阻尼器 负刚度弹簧 风洞试验 风振控制 

分 类 号：TU352.2[建筑科学—结构工程]