Abstract A damped outrigger system is developed to improve the conventional outrigger system by providing supplemental damping to control vibration in high-rise buildings. The optimal seismic performance of a buckling-restrained brace (BRB) outrigger system is investigated in this study using a spectrum-analysis-based simplified model. This simplified model is first calibrated by an ANSYS model via response history analysis. It is then used to perform numerous parametric analyses to determine the optimal damped outrigger location and damping ratio. Subsequently, a comprehensive dimensionless parameter associated with all the data obtained from the parametric analyses is obtained to solve a fitted equation of the optimal damped outrigger location. And the top displacement is also fitted with regard to the period to construct an equation of the top displacement spectra. These fitted equations can contribute to the preliminary design of BRB outrigger buildings.

中文翻译：

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抗屈曲支撑支腿系统高层建筑抗震优化分析

摘要 为了改进传统的悬臂梁系统，开发了一种阻尼悬臂梁系统，通过提供补充阻尼来控制高层建筑的振动。本研究使用基于频谱分析的简化模型研究了屈曲约束支撑 (BRB) 支腿系统的最佳抗震性能。该简化模型首先由 ANSYS 模型通过响应历史分析进行校准。然后用于执行大量参数分析，以确定最佳阻尼支腿位置和阻尼比。随后，获得与从参数分析获得的所有数据相关联的综合无量纲参数，以求解最佳阻尼支腿位置的拟合方程。并根据周期对顶位移进行拟合，构建顶位移谱方程。这些拟合方程有助于 BRB 支腿建筑的初步设计。