The Mitigation Of The Progressive Collapse
Of A 9-storey Structure Incorporating
United States Department Of Defence Guidelines
Author(s)
M. Izadifar, R. Naghshbandi, R. Abadi & Ir. A. Ahmad
Abstract
Many failures such as those due to blast, impact, wind pressure and earthquakes
can be caused by the progressive collapse in structures. This paper will discuss
different mitigation methods for progressive collapse corresponding numerical
analysis for a 9-storey reinforced concrete structure by SAP2000 following
severe initial damage. After removing specified critical columns the demand
capacity ratio (DCR) of the members will be measured by the latest revision of
Department of Defence of the United States (DOD) guideline, which is one
of the most complete sets of criteria in terms of providing useful guidance to the
designers in 2013. The structure has a potential of progressive collapse if DCR is
more than 2 for symmetrical structure. Two approaches will be presented to
diminish the potential of progressive collapse in the structures. They are
adequate increase in the size of structural elements throughout the structure and
establishing of bracing system at the top level. To gain the best method among
all that have been presented for the mitigation of progressive collapse, providing
Bracing at the top level is the most effective and economical method.
Keywords: blast, impact, wind pressure, earthquake, progressive collapse,
demand capacity ratio.
Keywords
blast, impact, wind pressure, earthquake, progressive collapse,
demand capacity ratio.
Related Book
Other papers in this volume
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