Under the combination of high temperature and load

significant creep deformations develop in steel and thus significantly affect the deformation and load capacity of steel structures in fire.However

creep effect was not taken into account so far in fire resistance research on steel structures.In order to investigate the effect of creep on bearing capacity of steel columns

high temperature creep parameter is incorporated into finite element model of steel columns and an analysis was carried out using ANSYS.Finite element model established in ANSYS was validated by comparing the fire test data of steel columns and full agreement was found.The validated model was utilized to investigate the effect of multiple parameters on bearing capacity of steel columns

which considered the creep effect

and was compared with different design codes on steel structures.It is shown that the fire behavior of steel columns can more accurately predicted by considering creep effect.The creep has great influence on fire response of steel columns

and the bearing capacity of steel columns in current design codes gives unsafe results.