Study on the Recovery Performance of RC Beams Reinforced by Shape Memory Alloy Wire

Abstract

Using the superelasticity and one-way memory function of shape memory alloy SMA to generate greater driving force, a smart concrete beam was developed. Through experiments, the bending resistance and deformation laws of smart concrete beams with shape memory alloy wires are studied, and the optimal solution of composite SMA wires in the mechanical properties of the beams is found. The test results show that laying a one-way memory composite super-elastic shape memory alloy wire on the bottom of the RC beam can effectively improve the deformation ability of the test beam, and the content of the memory wire and the super-elastic wire are different, and their deformation laws and flexural properties are also different.% Memory wire compound 50% super elastic wire has the best repair effect when the damage degree is 70%.