EFFECTOFFIREPARAMETERSON STRUCTURAL BEHAVIOUR OF A RESTRAINED STEEL BEAM

Abstract

When it comes to public and structural safety, fires are becoming a frequent hazard.      
Understanding the structural reaction of various elements exposed to fire resulted from the growing 
concern for structural fire safety. This starts with fire modeling, which simulates a fire scenario as 
fire curves of time temperature fluctuation and subsequently analyzes the reaction of structure for 
these fire curves. The opening factor, which measures the openings in a compartment; the thermal 
inertia of the compartment surroundings; and the fireload density, or the quantity of combustible 
materials available per unit floor area of a compartment, are some of the factors that are used to 
formulate the interpretation of fire scenarios as fire curves. Any change in these variables has an 
impact on the fire curve and, therefore, a structure's reaction. This work examines the impact of 
opening variation. The impact of thermal inertia, fuel load density, and factor on a beam's structural 
reaction. The variance in axial forces and deflections is its primary emphasis. Even though the 
percentage variation in its value is much higher (269.94%), the residual forces and deflections only 
varied by 0.4% and 2.13%, respectively, indicating that thermal inertia has the least effect on the 
beam's structural response. This is because the same is found to be higher for a comparatively lesser 
variation in the magnitudes of other factors.