Abstract
Incorporating openings within reinforced concrete (RC) beams poses significant risks to their structural integrity and performance, presenting a formidable challenge in structural engineering. This research employs numerical simulations to assess the efficacy of Iron-based Shape Memory Alloy (Fe-SMA) reinforcement in mitigating these adverse effects. Focusing on two critical factors, the size of the opening and the level of pre-stress applied to the Fe-SMA reinforcements, findings demonstrate that strategically positioned Fe-SMA bars significantly improve the structural response of RC beams. Such enhancements include increased stiffness, reduced crack propagation, and improved ductility and load-carrying capacity compared to control beams. These attributes collectively contribute to a more robust and durable structural system. Although pre-stressing the Fe-SMA bars at 50% does not significantly impact the beams’ ultimate load capacity and ductility, the overall results underscore the potential of Fe-SMA reinforcements to enhance the durability and performance of RC beams with openings. This research provides crucial insights into optimizing RC beam designs to surmount the challenges posed by openings, thus paving the way for developing more resilient and efficient structural systems.
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