Comparative Study On Multistoried Building With Steel Columns And Composite Columns Subjected To Fire Load

Abstract

Due to the increasing number of fire accidents that are able to leave behind great losses and complete collapse of structures, structural fire safety has become a major consideration in the design of high rise buildings. Fire is considered to be a major threat for buildings and its surroundings. Fire can be occurred at any stage of construction and the time or intensity cannot be predicted earlier. Concrete encased composite beams are those in which structural steel is fully covered by concrete. Concrete is considered to be a fire resistant material to an extent. So by providing concrete as cover to the structural member the fire resistance of the member can be improved. But as the temperature increases there will be spalling of concrete and steel get exposed to more fire. Design of multi storied structure is finished utilizing ETABS software dependent on [IS-1893: 2002] Considering live load, dead load, wind load and earth quake load. In this investigation, Response spectrum is finished. The columns are subjected to different load combinations along with fire loading ranging from 8000C-15000C.Comparative investigation on multistoried structure with STEEL, CFST and CES section for Fire loading. Seismic response of the structure in terms of Storey Displacement, Storey Drift, Base Shear, Natural Time period. To recommend the reasonable columns for fire load. Time temperature chart for the member is also plotted in this paper.