Abstract
Progressive collapse is a chain reaction of structural element failures due to a relatively local structure damage. Different design codes began considering progressive collapse guidelines and specifications following the collapse of the Ronan Point building in 1996 and the world trade center in 2001. Researchers and government agencies were inclined to study means of enhancing progressive collapse resistance of structures in order to mitigate the destructive effect of accidents and/or reoccurring disasters. A common type of progressive collapse occurs as a results of a sudden column removal. The resulting dynamic straining actions can be resisted by three mechanisms; vierendeel action in framed structures, catenary action in the beams and membrane action in the slabs. This paper aims to enhance progressive collapse resistance of framed structures using retrofitting with steel plates. Using steel plates retrofitting to enhance progressive collapse resistance of existing structures can provide a clever and innovative solution for smart city applications. In this paper, the effect of the proposed scheme on progressive collapse resistance was investigated for multi-story reinforced concrete framed structures. A dynamic, non-linear, analysis following the guidelines of the ASCE 41 and the GSA was performed to accurately portray the behavior of the structures and assess their progressive collapse resistance in the event of sudden column removal. The findings of the parametric study conducted shows the potential of this method on the behavior of the retrofitted structures.
Published Version
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