ABSTRACT
A steel-concrete composite column is a composite member subjected primarily to compression and bending. Composite columns are classified into two principal categories: steel-reinforced concrete sections and concrete-filled hollow steel sections. Generally, steel reinforced concrete (SRC) columns provide better fire performance in comparison with pure steel columns and concrete filled steel tubes (CFT) columns because the external concrete cover provides protection for the steel section. Composite columns are constructed using normal-strength steel (NSS) and normal-strength concrete (NSC). Local buckling is a major problem for high-strength steel (HSS). To overcome these problems, SRC columns came into existence, where the ductility of concrete can be improved and the local buckling of steel sections can be prevented or minimized. As material research and manufacturing technology improve, the use of higher-strength concrete and steel materials will continue to increase as wider applications are being sought in the construction of modern cities.
