456 www.ijergs.org Analysis of steel structure against Progressive collapse Prof.G.N.Narule

Abstract — A building undergoes progressive collapse when a primary structural element fails, resulting in the failure damage is disproportionate to the original cause, so the term disproportionate collapse is also used to describe this collapse type. Progressive collapse can be triggered by manmade, natural, intentional, or unintentional causes. Explosion, fires, earthquakes creates large amounts of stresses and the failure of supporting structural members can lead to a progressive collapse failure. Progressive collapse is a complicated dynamic process where the collapsing system redistributes the loads in order to prevent the loss of critical structural members. For this reason beams, columns, and frame connections must be designed in a way to handle the potential redistribution of large loads. This research provides insight into the structural configuration to achieve a demand to capacity ratio of appropriate quantity and prevent collapse in the event of a single column loss. Several relationships developed between various analysis procedure against shear forces. Ultimately, all this information can be used in design codes where there are currently very limited or no specific rules or guidelines