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Progressive Collapse Evaluation of High Rise Steel Structures due to Sudden Loss of Structural Members

Research output: Contribution in Book/Report/ProceedingsPaper

Published

Publication date2012
Host publicationAdvances in steel concrete composite and hybrid structures : proceedings of the 10th International Conference on Steel Concrete Composite and Hybrid Structures, 2-4 July 2012, Singapore
EditorsJ. Y. Richard Liew, Siew Chin Lee
Place of publicationSingapore
PublisherResearch Publishing Services
ISBN (Print)978-981-07-2616-4
Original languageEnglish

Abstract

Damage or instantaneous loss of critical structural members due to unforeseen events like impact, blast and natural disasters often propagates progressive collapse as a result of complex redistribution of stresses within the structural system. In severe conditions, in which the structure lacks the ability to absorb the stresses in seeking a new equilibrium state, it could result in partial or total collapse of the building. Current design guidelines such as GSA 2003 recommend single removal of load bearing member for progressive collapse assessment. However, triggering events may affect one or more structural member resulting in partial or total collapse of the structure. This paper presents the various effect of sudden column loss on the redistribution of forces in structural members that determine the equilibrium state of the structure.