High‐frequency force balance test is a major technical means to evaluate the wind effect of super high‐rise buildings. Most super high‐rise buildings have the characteristic that the first two‐order modal frequencies are close, and thus, considerable modal coupling effects (MCEs) may occur under wind load. For a balance model system (BMS), MCEs increase the difficulty of correcting aerodynamic distortion signals. For the wind‐induced vibration analysis of a structural system (PSS), the calculation results of the wind‐induced response and the equivalent static wind load (ESWL) may be significantly affected without considering MCE. Based on the above‐mentioned signal distortion of BMS and the modal coupling problem of PSS, this study proposes a wind‐induced vibration calculation method for the two coupled systems (BMS and PSS). The method uses the second‐order blind identification technique based on complex modal theory and the Bayesian spectral density method considering full aerodynamic characteristics to achieve effective correction of the distortion signal in BMS. In addition, it deduces the calculation method of the wind‐induced response and ESWL considering the three‐dimensional coupled vibration of a super high‐rise building. The wind effect calculation results of a 528‐m super high‐rise building confirm the necessity and effectiveness of the proposed method.

中文翻译：

---

基于高频力平衡技术的超高层建筑三维风振耦合计算方法

高频力平衡测试是评估超高层建筑风影响的主要技术手段。大多数超高层建筑的特征是前两个模态频率很接近，因此，在风荷载下可能会发生相当大的模态耦合效应（MCE）。对于平衡模型系统（BMS），MCE增加了校正空气动力学失真信号的难度。对于结构系统（PSS）的风致振动分析，在不考虑MCE的情况下，风致响应和等效静风荷载（ESWL）的计算结果可能会受到显着影响。基于上述BMS的信号失真和PSS的模态耦合问题，本研究提出了两种耦合系统（BMS和PSS）的风致振动计算方法。该方法使用基于复杂模态理论的二阶盲识别技术和考虑了完整空气动力学特性的贝叶斯光谱密度方法，可以对BMS中的失真信号进行有效校正。此外，它还考虑了超高层建筑的三维耦合振动，推导了风响应和ESWL的计算方法。528 m的超高层建筑的风效应计算结果证实了该方法的必要性和有效性。考虑超高层建筑的三维耦合振动，推导了风响应和ESWL的计算方法。528 m的超高层建筑的风效应计算结果证实了该方法的必要性和有效性。考虑超高层建筑的三维耦合振动，推导了风响应和ESWL的计算方法。528 m的超高层建筑的风效应计算结果证实了该方法的必要性和有效性。