Title Effect of Rebar on Ductility of Moment-resisting Frame with Concrete-filled Tube Column Type JournalPaper Keywords Concrete-filled steel tube columns (CFT), Finite element, Ductility, Hysteresis curve, ABAQUS Software, RC. Abstract Today, many developed countries use the Concrete-Filled Steel tube columns (CFT) to construct high-rise building and bridge piers Researchers saman mohebbi (Second Researcher), alireza babaeian amini (First Researcher)