SummaryTime history analysis is sometimes used in an estimation of the wind‐induced response of a tall building. However, time history analysis for the wind‐induced behavior by the ensemble‐averaging wind force costs much computation time. This paper provides a reliable prediction method for the wind‐induced response of the viscoelastic (VE)‐damped system considering its frequency dependency coupling with frame damping effect with frequency spectral method. VE damper used in high‐rise buildings can dissipate energy from excessive vibration induced by seismic or wind excitation. Fractional derivative (FD) model of VE dampers can express VE frequency dependency clearly, but it is computationally complicated. The herein proposed prediction method is based on frequency spectral method and evaluated wind‐induced responses of the single degree of freedom (SDOF) VE‐damped system with a FD VE damper subjected to the respective 1st modal along‐ and across‐wind force. The maximum error of wind‐induced responses of the VE‐damped system, such as the root mean square value of responses, the total input energy, and the total energy dissipation, is within . In summary, the proposed method had high accuracy in the prediction of wind‐induced responses of the VE‐damped system considering its frequency dependency with the coupling effect of frame damping.

中文翻译：

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考虑粘弹性阻尼结构频率依赖性的高层建筑风致响应预测

摘要时程分析有时用于估计高层建筑的风致响应。然而，通过集合平均风力对风引起的行为进行时程分析需要花费大量的计算时间。本文利用频谱法考虑了粘弹性（VE）阻尼系统与框架阻尼效应的频率依赖性耦合，为风致响应提供了一种可靠的预测方法。高层建筑中使用的 VE 阻尼器可以消散由地震或风激励引起的过度振动所产生的能量。VE阻尼器的分数阶导数（FD）模型可以清楚地表达VE频率依赖性，但计算复杂。本文提出的预测方法基于频谱方法，并评估了带有 FD VE 阻尼器的单自由度 (SDOF) VE 阻尼系统的风致响应，该系统受到各自的第一模态顺风和横风力的影响。VE阻尼系统风致响应的最大误差，如响应均方根值、总输入能量和总能量耗散，在 范围内。总之，考虑到其频率依赖性与框架阻尼的耦合效应，所提出的方法在预测 VE 阻尼系统的风致响应方面具有较高的准确性。