Megatall and supertall buildings often adopt megastructure systems characterized by secondary structure systems, and the serviceability problem caused by wind-induced vibrations often becomes the dominant factor in the structural design. Because the deformation of a supertall building usually presents bending characteristics, a viscous damped outrigger can reduce the wind-induced vibration of a supertall building with the installation of a small number of viscous dampers. However, time history analysis of the prototype model considering the nonlinear characteristics of viscous dampers is time-consuming, which is not conducive for iterative design optimization. Additionally, the conventional simplified model composed of one cantilever beam cannot be used for the analysis and design of a viscous damped outrigger. In this study, a simplified wind-induced vibration prediction model is proposed based on the mechanical characteristics of megastructures. This simplified model is a plane model that includes both core walls and frames whose member size can be extracted from the original structure. Parametric analysis shows that the simplified model has high acceleration prediction accuracy. An optimal design method combined with the simplified model, which aims to minimize the damped outrigger system cost, is proposed. A 600-m supertall building is presented as a case study. The accuracy and effectiveness of the simplified model and the optimal design method proposed in this study are illustrated. Thus, applying this optimal design method in combination with the simplified model can save significant analysis and design time and is conducive to the application of viscous damped outriggers in practical engineering.

中文翻译：

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装有粘性阻尼支腿的巨型框架核心墙结构在风荷载下的人体舒适性能优化设计

超高层和超高层建筑往往采用以二级结构体系为特征的巨型结构体系，风振引起的可使用性问题往往成为结构设计中的主导因素。由于超高层建筑的变形通常呈现弯曲特性，粘性阻尼支腿可以通过安装少量粘性阻尼器来降低超高层建筑的风振。然而，考虑粘性阻尼器非线性特性的原型模型时程分析耗时，不利于迭代设计优化。此外，传统的由一根悬臂梁组成的简化模型不能用于粘性阻尼支腿的分析和设计。在这项研究中，提出了一种基于巨型结构力学特性的简化风振预测模型。这个简化模型是一个平面模型，包括核心墙和框架，其构件尺寸可以从原始结构中提取。参数分析表明，简化模型具有较高的加速度预测精度。提出了一种结合简化模型的优化设计方法，旨在最小化阻尼支腿系统成本。以一栋 600 米的超高层建筑作为案例研究。说明了本研究中提出的简化模型和优化设计方法的准确性和有效性。因此，