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Full-scale experimental verification of resetable semi-active stiffness dampers

机译：可复位半主动刚度阻尼器的全面试验验证

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Because of many advantages over other control systems, semi-active control devices have received considerable attention for applications to civil infrastructures. A variety of different semi-active control devices have been studied for applications to buildings and bridges subject to strong winds and earthquakes. Recently, a new semi-active control device, referred to as the resetable semi-active stiffness damper (RSASD), has been proposed and studied at the University of California, Irvine (UCI). It has been demonstrated by simulation results that such a RSASD is quite effective in protecting civil engineering structures against earthquakes, including detrimental near-field earthquakes. In this paper, full-scale hardware for RSASD is designed and manufactured using pressurized gas. Experimental tests on full-scale RSASDs have been conducted to verify the hysteretic behaviours (energy dissipation characteristics) and the relation between the damper stiffness and the gas pressure. The correlation between the experimental results of the hysteresis loops of RASADs and that of the theoretical ones has been assessed qualitatively. Experimental results further show the linear relation between the gas pressure and the stiffness of the RSASD as theoretically predicted. Finally, shake table tests have also been conducted using an almost full-scale 3-storey steel frame model equipped with full-scale RSASDs at the National Center for Research on Earthquake Engineering (NCREE), Taipei, Taiwan, and the results are presented. Experimental results demonstrate the performance of RSASDs in reducing the responses of the large-scale building model subject to several near-field earthquakes.
机译：由于与其他控制系统相比有许多优势，半主动控制设备在民用基础设施中的应用受到了广泛的关注。已经研究了各种不同的半主动控制设备，用于在遭受强风和地震的建筑物和桥梁中的应用。最近，已经提出了一种新的半主动控制装置，称为可复位半主动刚度阻尼器（RSASD），并在加利福尼亚大学欧文分校（UCI）进行了研究。仿真结果表明，这种RSASD在保护土木工程结构免受包括有害的近场地震在内的地震方面非常有效。在本文中，使用加压气体设计和制造了用于RSASD的全尺寸硬件。已经对全尺寸RSASD进行了实验测试，以验证磁滞行为（能量耗散特性）以及阻尼器刚度和气压之间的关系。定性地评估了RASADs磁滞回线的实验结果与理论值之间的相关性。实验结果进一步表明，气体压力与RSASD刚度之间的线性关系如理论上预测的那样。最后，在台湾台北的国家地震工程研究中心（NCREE），使用配备了全尺寸RSASD的几乎全尺寸的三层钢框架模型，还进行了振动台测试，并给出了结果。实验结果证明了RSASD在减少大型建筑模型在几次近场地震中的响应方面的性能。

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