The most important issues that researchers are faced with are extensive damages and permanent deformations in the structures after earthquakes. This study proposes new hybrid smart dampers combined with shape memory alloy (SMA) plates, friction devices, and polyurethane springs (e.g., ASFP damper) with an aim to decrease structural damage as well as to mitigate residual deformation in the concentrically braced frames (CBFs). These dampers are simply fabricated, and the other parts are low cost except for the nitinol SMA plates. In addition, they can be employed for not only new construction but also rehabilitation of existing structures. In order to investigate the behavior of each key component (e.g., SMA plates, friction devices, and polyurethane springs), eight different cases are experimentally investigated under quasi‐static cyclic loading, and the effects of all components are evaluated in this study. In four cases, the SMA plates are replaced by the steel plates to better understand the effect of SMA plates on recentering capability. The details of experimental tests are described with more details. The final results demonstrate that the SMA dampers can restore more than half of residual displacement. In addition, these SMA dampers exhibit stable energy dissipation and adequately operates under both compressive and tensile loading.

中文翻译：

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新型形状记忆合金板轴向偏心阻尼器的实验研究

研究人员面临的最重要问题是地震后建筑物的广泛损坏和永久变形。这项研究提出了一种新型的混合智能减震器，结合了形状记忆合金（SMA）板，摩擦装置和聚氨酯弹簧（例如ASFP减震器），目的是减少结构损坏并减轻同心支撑框架（CBFs）中的残余变形。 ）。这些阻尼器制造简单，除镍钛诺SMA板外，其他部件成本低廉。此外，它们不仅可以用于新建建筑，还可以用于现有结构的修复。为了研究每个关键组件（例如SMA板，摩擦装置和聚氨酯弹簧）的行为，在准静态循环载荷下，通过实验研究了八种不同的情况，在本研究中评估了所有组件的效果。在四种情况下，SMA钢板被钢板替代，以更好地了解SMA钢板对扶正能力的影响。详细描述了实验测试的细节。最终结果表明，SMA阻尼器可以恢复一半以上的残余位移。此外，这些SMA阻尼器表现出稳定的能量耗散，并在压缩和拉伸负载下均能正常运行。最终结果表明，SMA阻尼器可以恢复一半以上的残余位移。此外，这些SMA阻尼器表现出稳定的能量耗散，并在压缩和拉伸负载下均能正常运行。最终结果表明，SMA阻尼器可以恢复一半以上的残余位移。此外，这些SMA阻尼器表现出稳定的能量耗散，并在压缩和拉伸负载下均能正常运行。