الفهرس 
Strengthening of steel beam to column connections to resist progressive collapse
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Abstract
Progressive collapse is currently one of the important research topics in structural engineering. It occurs when a primary structural component of a building fails to resist an accidental overloading. This failure leads to spreading of the forces to other neighboring load bearing components; if this distribution of loads exceeded the component capacity then this will lead to collapse of these components and ultimately to total collapse. In this research, the progressive collapse of a symmetric steel structure is examined and the effect of different strengthening techniques for the moment resisting frame connections is investigated. The principles presented in this research were examined by developing idealized models and carrying out the alternate path method with the nonlinear static progressive collapse analysis using SAP2000 software according to UFC 2009 guidelines