Steel　structures　often　experience　significant　durability　degradation　over　time　due　to　extreme　environments.　To　better　understand　the　impact　of　chloride　environments　on　the　mechanical　properties　of　steel　compression　members,　accelerated　corrosion　tests　were　conducted　on　H-shaped　steel　short　columns　with　applied　current.　Monotonic　tensile　tests　were　also　performed　on　steel　specimens,　and　axial　compression　tests　were　carried　out　on　H-shaped　steel　short　columns　with　varying　degrees　of　corrosion.　The　results　revealed　that　the　corrosion　rate　increased　with　higher　current　intensity　and　longer　electrification　duration　while　changing　with　different　chloride　ion　concentrations.　As　the　corrosion　rate　increased,　the　steel　material　exhibited　a　linear　decrease　in　yield　strength,　ultimate　strength,　and　elastic　modulus.　Consequently,　the　mechanical　properties　of　the　H-shaped　steel　columns,　such　as　stiffness,　ductility　coefficient,　and　load-bearing　capacity,　were　adversely　affected.　Based　on　these　findings,　a　predictive　formula　was　proposed　to　estimate　the　ultimate　load-bearing　capacity　of　H-shaped　steel　columns　with　different　degrees　of　corrosion　in　chloride　salt　environments.　The　experimental　results　were　further　validated　through　numerical　simulations,　and　parameter　analysis　indicated　a　negative　correlation　between　flange　width-to-thickness　ratio,　web　height-to-thickness　ratio,　and　ultimate　load-bearing　capacity　of　H-shaped　steel　columns.　Finally,　a　random　corrosion　pit　generation　algorithm　is　proposed,　effectively　simulating　the　actual　corrosion　pit　distribution　and　calculating　the　ultimate　bearing　capacity　of　columns.　©　2023