ANALYTICAL ASSESSMENT ON PROGRESSIVE COLLAPSE POTENTIAL OF NEW REINFORCED CONCRETE FRAMED STRUCTURE

Sumithra Chavan S, A R Rajendra

Abstract: Progressive collapse is a catastrophic partial or total failure that mostly occurs when a structure looses a primary structural component or more like a column or any vertical load resisting component due to natural or manmade hazard. In this research paper a new undergoing construction of Reinforced concrete 12 storied building located in Whitefield, Bangalore is modelled in accordance with the actual drawings according to Indian standard codes and analysed for progressive collapse potential by using structural design and analysis software Etabs2013. For evaluating the effect of progressive collapse in accordance with the guidance of U.S General Service Administration (GSA) linear static method is followed. The analytical model is checked for Demand capacity ratio by removing primary vertical support, one column at a time and evaluating whether the member is resistance to progressive collapse. Many such columns are removed and analysed to know the behaviour of building on abnormal loading conditions. The result shows that progressive collapse can be resisted by providing proper detailing and adequate reinforcement to the beams and columns

Keywords: Progressive collapse, Demand Capacity Ratio (DCR), General Service Administration standards (GSA), Design software Etabs2013, linear static

DOI: https://doi.org/10.15623/ijret.2015.0405050