Blast-Induced Damage Mapping Framework for Use in Threat-Dependent Progressive Collapse Assessment of Building Frames
Publication: Journal of Performance of Constructed Facilities
Volume 31, Issue 2
Abstract
This paper proposes a methodology for mapping structural damage onto building frames due to exterior blast threats for use in a threat-dependent progressive collapse assessment. The proposed approach contrasts with current practice, which typically relies on a threat-independent approach for progressive collapse analysis. Damage is mapped to the structure based on the calculated response of the discrete structural components (particularly the columns) to a blast-induced pressure time history. Contours of structural damage can then be mapped over the building face for discrete combinations of charges and standoffs. For a prototype reinforced concrete building frame, calculated distributions of damage for conventional explosive threats suggest that the current state-of-practice approach (in which damage is represented with a single column removal) may not constitute a generally conservative strategy for progress collapse-resistant design. The proposed framework can be used to determine standoff distances needed to reduce progressive multicolumn failure scenarios in building frames for high-risk facilities and can be used as input for a progressive collapse assessment of these frames.
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Published In
Journal of Performance of Constructed Facilities
Volume 31 • Issue 2 • April 2017
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Sep 30, 2015
Accepted: Jun 16, 2016
Published online: Jul 28, 2016
Discussion open until: Dec 28, 2016
Published in print: Apr 1, 2017
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