The wind‐induced acceleration responses at the top of the Guangzhou West Tower (GZWT; 432 m) and the wind speed and direction at the top of Guangzhou Tower (532 m), which is located across the GZWT, were measured during the passage of Typhoon Mangkhut. The two buildings are separated by a river. The variation characteristics of the first two natural frequencies and damping ratios of the GZWT under strong vibrations are obtained by using random decrement technique (RDT) and modified Bayesian spectral density approach (MBSDA). Finally, field measurements of the maximum peak accelerations are compared with wind tunnel test results. The damping ratios identified by MBSDA are found to be greater than the results obtained by RDT. The natural frequencies decrease with increasing maximum acceleration of the corresponding acceleration segment. Besides, they decrease firstly and then increase with time elapses, reaching a minimum value at the maximum mean wind speed. The damping ratios are completely discrete, and no obvious linear correlation exists between the damping ratios and maximum acceleration of the corresponding acceleration segment. The peak accelerations at the top of the GZWT obtained from wind tunnel experiment agree well with that of full‐scale measurements.

中文翻译：

---

广州西塔风场的实测与风洞实验研究

广州西塔（GZWT; 432 m）顶部的风加速度响应和广州塔（GZWT）两端的广州塔（532 m）顶部的风速和风向在穿越时进行了测量。台风山竹。这两座建筑被一条河隔开。利用随机减量技术（RDT）和改进的贝叶斯频谱密度法（MBSDA），获得了强振动条件下GZWT的前两个固有频率的变化特性和阻尼比。最后，将最大峰值加速度的现场测量结果与风洞测试结果进行比较。发现MBSDA所确定的阻尼比大于RDT获得的结果。固有频率随着相应加速度段的最大加速度的增加而降低。除了，它们先下降然后随时间增加而增加，在最大平均风速下达到最小值。阻尼比是完全离散的，并且阻尼比与相应加速段的最大加速度之间不存在明显的线性相关性。通过风洞实验获得的GZWT顶部的峰值加速度与全面测量的峰值加速度非常吻合。