Abstract Post-tensioned rocking systems have proved to be highly effective in controlling structural damage during strong ground motions. However, recent events have highlighted the importance of looking at both the structural and non-structural components within a holistic framework. In this context, the high rotations and accelerations associated with the rocking motion can cause significant non-structural damage and affect the performance and functionality of the entire system. In this paper, we analytically examine the fundamental dynamics of post-tensioned rocking structures and investigate the benefits of using supplemental rotational inertia to reduce their seismic demands and improve their overall performance. The newly proposed strategy employs inerters, a mechanical device that develops a resisting force proportional to the relative acceleration between its terminals. Analyses conducted for a wide range of acceleration pulses and real pulse-like ground motions show that post-tensioned structures equipped with inerters consistently experience lower demands and have reduced probabilities of exceeding limit states typically associated with damage. Importantly, the new vibration control strategy advanced in this paper opens the door for an expedient modification of the fundamental dynamic response of rocking systems without altering their geometry.

中文翻译：

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带惰化器的后张摇摆结构动力响应

摘要 后张式摇摆系统已被证明在强烈地震动下能有效控制结构损坏。然而，最近的事件凸显了在整体框架内同时审视结构性和非结构性组成部分的重要性。在这种情况下，与摇摆运动相关的高旋转和加速度会导致显着的非结构损坏并影响整个系统的性能和功能。在本文中，我们分析了后张摇摆结构的基本动力学，并研究了使用补充转动惯量来减少抗震要求和提高整体性能的好处。新提出的策略采用惰性，一种机械装置，可产生与其端子之间的相对加速度成正比的阻力。对广泛的加速度脉冲和真实的类脉冲地面运动进行的分析表明，配备有惰化器的后张结构始终具有较低的要求，并且超出通常与损坏相关的极限状态的可能性也降低。重要的是，本文中提出的新振动控制策略为在不改变其几何形状的情况下方便地修改摇摆系统的基本动态响应打开了大门。对广泛的加速度脉冲和真实的类脉冲地面运动进行的分析表明，配备有惰化器的后张结构始终具有较低的要求，并且超出通常与损坏相关的极限状态的可能性也降低。重要的是，本文中提出的新振动控制策略为在不改变其几何形状的情况下方便地修改摇摆系统的基本动态响应打开了大门。对广泛的加速度脉冲和真实的类脉冲地面运动进行的分析表明，配备有惰化器的后张结构始终具有较低的要求，并且超出通常与损坏相关的极限状态的可能性也降低。重要的是，本文中提出的新振动控制策略为在不改变其几何形状的情况下方便地修改摇摆系统的基本动态响应打开了大门。