Then the structure is checked for the Demand Capacity Ratio as per GSA 2013. The structure is analysed for gravity load and seismic load. In this study, a column at the different position and different story level is removed to simulate an effect of an extreme event and the remaining structure is analysed using a finite element software ETABS 2015. A linear static analysis based on the GSA-2013 guidelines is used as preliminary study to determine progressive collapse analysis of low rise steel frame structure with and without bracing system. This paper compares the influences of several modelling approach for progressive collapse assessment of steel frame structure, considering sudden column loss as design scenario.
The most common local failure is framed structural is to be column failure. Hence the total damage is disproportionate to the original cause. Progressive Collapse is a local failure of a primary structural component leads to collapse of adjoining member which leads to additional collapse.
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