Developing robust structure: Multi‐expression programming for anticipating mechanical properties of shape memory alloy‐confined concrete cylinders

Abstract This study emphasizes the expansion of novel relationships to determine maximum compressive stress, corresponding strain, ultimate stress, and strain in order to enhance the precision and practicality of predicting the behavior of SMA‐confined concrete (SMACC) with spirals. It develops predictive equations for the mechanical properties of SMACC cylinders using the multi‐expression programming (MEP) method. The MEPX software is employed to derive optimal relationships by collecting experimental data from 42 concrete cylindrical specimens subjected to uniaxial compression and confined with SMA spirals. The findings show that the developed MEP‐based relationships not only provide practical equations, but also produce more precise results.