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Progressive collapse mitigation of 2D steel moment frames

TitleProgressive collapse mitigation of 2D steel moment frames
Publication TypeJournal Article
Year of Publication2015
AuthorsGerasimidis S, Baniotopoulos CC
JournalStahlbau
Volume84
Issue5
Start Page324
Pagination324-331
Keywordsbeam, buckling, Conservation and maintenance, earthquake, Experimental set-ups, IT in steel construction, Loss of stability, resilience, Steel buildings, structural failure
Abstract

The problem of the progressive collapse of structures is today at the forefront of structural engineering because of multiple natural and man-made hazards, the aging of the infrastructure and the catastrophic consequences associated with that. This paper investigates the effects of different strengthening techniques for mitigating the phenomenon of progressive collapse for 2D steel moment frames. These techniques are applied to a series of moment frames of varying heights and designs using a finite element analysis involving both material and geometric non-linearities. The results of this work demonstrate that, when analyzed as 2D assemblies, realistic, similar steel frame structures undergo different collapse mechanisms and that a general strengthening scheme cannot be applied to all collapse mechanisms.

DOI10.1002/stab.201510261