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Dynamic loading tests and seismic response analysis of a stud-type damper composed of multiple friction units with disc springs

机译:用圆盘弹簧组成的螺柱型阻尼器的动态加载试验和地震反应分析

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This paper presents an experimental study on the performance of a shear-sliding stud-type damper composed of multiple friction units with high-tension bolts and disc springs. A numerical evaluation of the response reduction effects achieved by the stud-type damper is also presented. In dynamic loading tests, the behavior of stud-type multiunit friction damper specimens was investigated. Three different full-scale damper specimens, which were composed of five, six, or seven friction units with two or four sliding surfaces, were incorporated into loading devices for testing. The stud-type friction dampers demonstrated stable rigid-plastic hysteresis loops without any remarkable decrease in the sliding force even when subjected to repetitive loading, in addition to showing no unstable behavior such as lateral buckling. The damper produced a total sliding force approximately proportional to the number of sliding surfaces and friction units. The total sliding force of the stud-type damper can thus be estimated by summing the contributions of each friction unit. In an earthquake response simulation, the control effects achieved by stud-type dampers incorporated into an analytical high-rise building model under various input waves, including long-period, long-duration and pulse-like ground motions, were evaluated. A satisfactory response reduction was obtained by installing the developed stud-type dampers into the main frame without negatively impacting usability and convenience in terms of building planning.
机译:本文介绍了一种剪切滑动螺柱型阻尼器的性能的实验研究,该剪切式螺柱型阻尼器与具有高张力螺栓和圆盘弹簧的多种摩擦单元组成的性能。还提出了由螺柱型阻尼器实现的响应减少效应的数值评估。在动态加载试验中,研究了螺柱型多单​​摩擦阻尼标本的行为。三种不同的全尺度阻尼标本由五个,六个或七个具有两个或四个滑动表面的摩擦单元组成,被纳入装载装置中进行测试。螺柱型摩擦阻尼器显示出稳定的刚性塑料磁滞回路,即使在经受重复的载荷之外也没有任何显着降低的滑动力,除了显示不稳定的行为,例如横向屈曲。阻尼器产生了与滑动表面和摩擦单元的数量成比例的总滑动力。因此,可以通过求和每个摩擦单元的贡献来估计螺柱型阻尼器的总滑动力。在地震响应模拟中,评估了在各种输入波下掺入分析高层建筑模型中的螺柱型阻尼器实现的控制效果,包括长期,长持续时间和脉冲状地运动。通过将开发的螺柱型阻尼器安装到主框架中而不会对建筑规划方面的可用性和便利性进行负面影响而获得令人满意的反应减少。

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