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Structural Engineering and Mechanics Volume 39, Number 2, July25 2011, pages 287-301 DOI: http://dx.doi.org/10.12989/sem.2011.39.2.287 |
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Pressure impulse diagrams for simply-supported steel columns based on residual load-carrying capacities |
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Jong Yil Park and Theodor Krauthammer
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| Abstract | ||
| This paper is focused on the residual capacity of steel columns, as a damage criterion. Load-Impulse (P-I) diagrams are frequently used for analysis, design, or assessment of blast resistant structures. The residual load carrying capacity of a simply supported steel column was derived as a damage criterion based on a SDOF computational approach. Dimensionless P-I diagrams were generated numerically with this quantitative damage criterion. These numerical P-I diagrams were used to show that traditional constant ductility ratios adopted as damage criteria are not appropriate for either the design or damage assessment of blast resistant steel columns, and that the current approach could be a much more appropriate alternative. | ||
| Key Words | ||
| residual load carrying capacity; blast; steel column; P-I diagram | ||
| Address | ||
| Jong Yil Park: Agency for Defense Development, Joint Modeling and Simulation Center, PO Box 35-5 Yuseong, Daejon 305-600, Korea Theodor Krauthammer: Center for Infrastructure Protection and Physical Security (CIPPS), University of Florida, 365 Weil Hall, PO Box 116580, Gainesville, FL 32611-6580, USA | ||