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台北101大楼主塔楼总高508m共101层,在台风“马莎”和“泰利”影响下,对其风致响应实测资料进行统计分析,评估了典型超高层建筑的风致振动特性。结果表明两次测试的结构模态参数基本吻合,有限元分析的自振频率小于实测结果,计算的振型与测试结果符合较好,利用随机减量方法识别的结构阻尼比与振幅之间呈现非线性关系,并不同程度的表现出随振幅增大而增大的特性,实测的结构一阶阻尼比大于同类超高层建筑物的测试结果,两次台风作用下89层、101层的加速度峰值和均方根均小于规范相应限值,满足舒适度的要求。测试结果为超高层建筑设计及相关研究提供有用的资料及依据。
Under the influence of typhoon “Martha ” and “Taili ”, the main tower of Taipei 101 Tower has a total height of 508m, and its wind-induced response data are statistically analyzed to evaluate the wind-induced vibration characteristics of typical super tall buildings. The results show that the modal parameters of the two tests agree well with each other. The natural frequencies of the finite element analysis are less than the measured ones. The calculated modes agree well with the test results. The damping ratio and the amplitude of the structure identified by the random decrement method Non-linear relationship, and to varying degrees showed the amplitude increases with the increase of the characteristics of the first-order damping ratio measured structure is higher than similar high-rise buildings test results, the 89th and the 101st layer under the action of two typhoons peak acceleration And root mean square are less than the corresponding specification limits to meet the comfort requirements. The test results provide useful information and basis for super high-rise building design and related research.