The　study　of　the　durability　of　steel-reinforced　concrete　(SRC)　columns　under　the　influence　of　coastal　moisture–heat　coupling　has　grown　in　prominence.　In　this　study,　electrochemical　corrosion　and　axial　pressure　loading　tests　were　performed　on　10　SRC　columns.　These　tests　studied　the　effects　of　varying　corrosion　rates　and　CL−concentration　on　the　axial　pressure　performance　of　the　SRC　columns　when　conducted　in　an　energized　medium,　and　the　results　revealed　the　modes　of　failure　and　the　degradation　laws.　The　ultimate　bearing　capacity　and　stiffness　of　SRC　columns　increasingly　deteriorate　with　increasing　corrosion　rate;　the　ductility　index　also　deteriorates　to　certain　extent.　When　the　corrosion　rate　exceeds　20　%,　each　index　parameter　of　the　test　column　deteriorates.　During　the　axial　compression　test,　the　concentration　of　CL−in　the　energized　medium　primarily　increases　the　growth　rate　of　strain　in　the　elastic-plastic　phase　during　the　middle　and　late　loading　stages.　This　leads　to　further　deterioration　of　the　SRC　columns　in　multiple　ways,　such　as　cracking　of　the　protective　layer　of　concrete,　weakening　of　the　material　properties,　and　damage　to　the　cross-section.　Based　on　this　experimental　study,　the　modeling　of　SRC　columns　under　chloride　salt　erosion　was　performed　using　a　new　finite-element　method.　In　addition,　the　Mander　constrained　concrete　model　and　the　Biondini　concrete　cracking　model　were　used　to　theoretically　derive　the　ultimate　bearing　capacity　of　the　corroded　SRC　column.　©　2024　Elsevier　Ltd