Progressive Collapse of Steel Building Subjected to Fire Load

Abstract

Progressive Collapse in a steel building occurs when any heavy structural load carrying member leads to collapse of adjacent members, which is turn in to the additional collapse. In this paper, the G + 8 moment resisting steel frame building is analysed for progressive collapse considering two methods namely as linear static and non-linear static method by using ETABS 2018 software. In this model analysis, the columns at different levels are subjected to varying temperatures ranging from 300℃-1000℃ with the material properties of steel and yield strength as per IS 800-2007. load combinations are considered as per IS 875 part I & II. According to General Service Administration (GSA) 2016 guidelines fire load is applied additionally at different storeys to the selected columns. The structure is analysed by using software and the DCR values of column obtained are checked as per GSA 2016 permissible limits.