超高层建筑风振控制方案的对比分析

Comparison and analysis of wind vibration control schemes for super high-rise buildings

以天津某超高层结构的风振控制为研究对象,分析了风荷载的动力特性。针对该工程的自身特点提出了设置粘滞阻尼器(A)、设置双向调频质量阻尼器(B)、设置粘滞阻尼器和双向调频质量阻尼器(C)的三种减振控制方案,采用具有三维空间相关性的自回归过滤技术,进行了不同控制方案下的风振控制动力分析,对比分析了不同方案下的控制效果。结果表明:在特定的加强层处设置粘滞阻尼器及在顶层设置调谐质量阻尼设备均能够耗散风振作用输入能量的30%以上,进而有效衰减结构的风致振动响应,保证主体结构的正常使用工作状态。依据分析结果对超高层结构体系风振控制的分析与设计提出了建议。

Based on the wind-induced vibration control of a super high rise structure in Tianjin,the dynamic characteristics of wind load are analyzed. According to the characteristics of the project,three kinds of damping control schemes are put forward： set up viscous damper（ A）,set up multiple tuned mass dampers（ B）,and mix these two above（ C）,the autoregressive filtering technology which takes the three-dimensional spatial correlation into consideration is used to study the wind-induced vibration in different control programs,comparative analysis of the control effect under different programs. The results show that a viscous damper provided at the specific reinforcement layer and a tuning mass damping device set on the top floor are capable of dissipating more than 30%of the input energy,then the wind-induced vibration response is effective attenuation,to ensure the normal use of the main body of the structure. According to the analysis results,the analysis and design of wind vibration control for high-rise structure system are put forward.