Optimal Damper Slip Force for Vibration Control Structures Incorporating Friction Device with Sway-Rocking Motion Obtained Using Shaking Table Tests
Optimal Damper Slip Force for Vibration Control Structures Incorporating Friction Device with Sway-Rocking Motion Obtained Using Shaking Table Tests
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DOI：
10.1155/2019/6356497
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发表时间：
2019-02
影响因子：
1.8
通讯作者：
K. Shirai;A. Nagaoka;N. Fujita;T. Fujimori
中科院分区：
文献类型：
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作者：
K. Shirai;A. Nagaoka;N. Fujita;T. Fujimori
在这项研究中，进行了一系列的振动台试验，使用的标本，包括一个上部结构，包括一个摩擦装置和摇摆摇摆机构下的上部结构，以确定最佳的阻尼器滑移力的被动振动控制系统考虑摇摆摇摆运动的影响。采用简单的摩擦装置，由橡胶带和不锈钢板组成，允许滑动力的大小很容易设置。通过振动台试验确定了摩擦装置的最佳滑移力，使上部结构在地震作用下的峰值和均方根响应最小化。根据计算结果，发现摩擦装置的最佳滑移力根据地震动输入水平和摇摆摇摆条件而变化。研究结果表明，在被动控制结构的设计和确定最佳阻尼滑移力时，应考虑摇摆-摇摆运动的影响。
In this study, a series of shaking table tests were conducted using a specimen that consisted of a superstructure, incorporating a friction device and a sway-rocking mechanism under the superstructure to determine the optimal damper slip force of a passive vibration control system considering the effects of sway-rocking motion. The adopted simple friction device, composed of rubber bands and stainless steel plates, allowed the magnitude of the slip force to be easily set. The optimal slip force of the friction device, which minimizes the peak and root-mean-square response of the superstructure subjected to earthquakes, was determined from the shaking table tests. Based on the results, the optimal slip force of the friction device was found to vary according to the input level of the ground motions and the sway-rocking conditions. The obtained results suggest that the effect of sway-rocking motion should be considered in the design of passive control structures and the determination of their optimal damper slip force.