A review on Progressive Collapse of Steel Buildings

Abstract

Progressive collapse of buildings is generally begun by a local failure due to unexpected actions continued by subsequent chain effect of the structures which may result in extended range failure or even collapse of the entire buildings. Progressive collapse of building structures has been widely studied by designers and researchers last years. This paper assesses and compares the current researches on this object from experimental study, numerical simulation and theoretical analysis. Given the limitation of costs and problems of experimental tests, the experimental studies investigate the collapse mechanism such as development of stresses and strains of materials and also damage to failure extending of them mainly via the scaled down samples of structural constituents and substructures. On the other hand, the collapse behavior of entire building structures is analyzed via the numerical procedures such as the finite element method. Furthermore the collapse resistance demand and the stability assessment for building structures are theoretically studied in depth at simplified theoretical models.