A Nonlinear Cable Bracing Inerter System for Vibration Control
A Nonlinear Cable Bracing Inerter System for Vibration Control
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DOI：
10.21741/9781644901311-20
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发表时间：
2021-02
期刊：
影响因子：
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通讯作者：
S. Xue;J. Kang;K. Ikago;L. Xie;X. Ban
中科院分区：
文献类型：
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作者：
S. Xue;J. Kang;K. Ikago;L. Xie;X. Ban
摘要。本文提出了索撑干涉系统（CBIS）的非线性索模型。在CBIS中，引入了电缆来连接互连系统和用于平移到旋转转换的结构。该CBIS采用了一个干涉元件、一个非线性索支撑元件和一个附加阻尼元件，以利用它们的协同效益。本文旨在研究非线性CBIS对弯剪型高层建筑的控制效果。首先，在单自由度系统中加入非线性干涉系统，建立其力学模型；在此基础上，提出了一种高层建筑系统的优化设计方法，并通过时程分析验证了系统的控制效果。综上所述，采用CBIS可以显著提高结构性能。利用遗传算法可以获得最优的CBIS参数，从而更有效地降低高层建筑的动力响应。
Abstract. This study proposes a nonlinear cable model for the cable-bracing inerter system (CBIS). In a CBIS, cables are introduced to connect inerter systems and the structure for translation-to-rotation conversion. This CBIS employs an inerter element, a nonlinear cable bracing element and an additional damping element to utilize their synergy benefits. This paper aims to investigate the control effect of the nonlinear CBIS for high-rise buildings that are represented as bending-shear type models. First, a nonlinear inerter system is incorporated into a single-degree-of-freedom (SDOF) system and the mechanical model is proposed. An optimum design method is then developed for a high-rise building system equipped with a CBIS and the time-history analyses are conducted to validate the control effect of the CBIS. It is concluded that the employment of a CBIS can substantially improve the structural performance. A genetic algorithm can be used to obtain optimal parameters of a CBIS, thereby more effectively reducing the dynamic response of high-rise buildings.