The shape memory alloys (SMAs) are special materials able to withstand large non-elastic deformations regaining their original form by removing stress. High fatigue strength and proper resistance to corrosive agents are the specific characteristics of these alloys. This article explores the SMA and carbon fiber reinforced polymer (CFRP) at designated points of reinforced concrete (RC) structures to evaluate the behavior against selected earthquakes. Three RC frames with 5, 10 and 15 stories were modeled and various cases were considered for SMA location in different story levels and for each structure, there are 8 different cases. In the first part, the incremental dynamic analysis (IDA) was employed to assess the entire range of structural dynamic behavior using 13 ground-motion far-field records set. In the second part, by using the produced data from IDA method, fragility evaluation was conducted on multiple limit states to provide a comprehensive performance assessment for each case. The extracted graphs show that the strengthening of the frames studied by the SMA rebar and the CFRP layers, causes an increase in the maximum drift rates and spectral acceleration (Sa) and thus increases the ductility. Consequently, the rate of probability of seismic damage decreased and the frame is more resistant to collapse.

形状记忆合金 (SMA) 是一种特殊材料，能够承受较大的非弹性变形，通过消除应力恢复其原始形状。高疲劳强度和适当的耐腐蚀性是这些合金的特性。本文探讨了钢筋混凝土 (RC) 结构指定点处的 SMA 和碳纤维增强聚合物 (CFRP)，以评估抗震性能。模拟了 5、10 和 15 层的三个 RC 框架，并考虑了不同层级的 SMA 位置的各种情况，对于每个结构，有 8 种不同的情况。在第一部分中，使用增量动力分析 (IDA) 来评估使用 13 个地面运动远场记录集的结构动力行为的整个范围。在第二部分，通过使用IDA方法产生的数据，对多个极限状态进行脆性评估，为每个案例提供全面的性能评估。提取的图形显示，SMA 钢筋和 CFRP 层研究的框架的加强，导致最大漂移率和谱加速度 (Sa) 的增加，从而增加了延展性。因此，地震损坏的概率降低，框架更耐倒塌。导致最大漂移率和谱加速度 (Sa) 增加，从而增加延展性。因此，地震损坏的概率降低，框架更耐倒塌。导致最大漂移率和谱加速度 (Sa) 增加，从而增加延展性。因此，地震损坏的概率降低，框架更耐倒塌。