In recent years, hybrid rocking columns incorporating post-tensioned (PT) tendons and energy dissipation devices become prevalent on account of the superior self-centering capacity. In this paper, the simplified analysis method based on interface section analysis is employed to conduct parametric analyses on the hybrid rocking columns with external buckling-restrained devices, which are adopted as the external energy-dissipators. The effects of four parameters including the aspect ratio, the initial PT force, the area of PT tendons and the area of energy-dissipators are investigated. Furthermore, a simplified design method for hybrid rocking columns with external energy-dissipators is proposed using the parametric analysis results. In the design procedure, the performance index [Formula: see text] is employed considering the requirement of residual drift. The efficiency of the design method is verified by a numerical design example to show the application. The results show that the design objectives of lateral force and residual drift can be achieved through a small number of iterations.

中文翻译：

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外消能器混合摇柱的循环特性及简化设计方法

近年来，由于具有优越的自定心能力，结合后张（PT）筋和能量耗散装置的混合摇摆柱变得普遍。本文采用基于界面截面分析的简化分析方法，对采用外置屈曲约束装置作为外消能器的混合摇摆柱进行参数分析。研究了纵横比、初始PT力、PT筋面积和消能器面积4个参数的影响。此外，利用参数分析结果，提出了一种带有外部消能器的混合摇摆柱的简化设计方法。在设计程序中，性能指标[公式：考虑到残余漂移的要求，请参阅文本]。通过数值设计实例验证了该设计方法的有效性，以展示应用。结果表明，侧向力和残余漂移的设计目标可以通过少量的迭代来实现。