Title: Simplified methodologies
for preliminary blast-resistant design
of precast concrete wall panels
Date Published: July - August 2019
Volume: 64
Issue: 4
Page Numbers: 55 - 70
Authors: Omar M. Alawad, Matthew J. Gombeda, Clay J. Naito, and Spencer E. Quiel
https://doi.org/10.15554/pcij64.4-03
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Abstract
This paper presents two simplified blast-resistant
design methodologies for rapid generation of pressure-impulse
(P-I) curves for solid precast concrete
wall panels with conventional reinforcement: a normalization approach and a curve-fitting methodology.
Both methods are primarily intended for preliminary
design calculations that would be conducted during the
bidding phase. The normalization approach involves
shifting a control
P-I curve to determine the respective curve for any panel configuration based on its
constitutive properties. This method generally results
in low error and, due to its streamlined computational
efficiency, was used to develop a spreadsheet-based
design tool. The curve-fitting approach, which uses
an analytical formula to calculate the dynamic region
of the
P-I curve, is suited for simplified hand calculations or design handbooks. Both approaches exhibit
superior computational efficiency relative to traditional
single degree of freedom analyses and are well suited
for rapid assessments of panel performance during the
preliminary design phase.