Abstract:An analytical model is presented to predict the response of restrained steel columns to elevating temperatures due to fire. A locally heated column was idealised as stub column in series with a spring representing restraint from the structure. The model incorporates thermal, creep and elasto-plastic effects which represents the most important material factors of the behaviour of steel columns when exposed to fire. The significance of these effects at different stages of a fire is clearly identified. Axial defo… Show more
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