American Society of Civil Engineers


Modeling and Stability Assessment of Locally Damaged Steel Columns


by J. Fogarty, (Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 48109 E-mail: jefogart@umich.edu), N. M. Yossef, Ph.D., (Department of Structural Engineering, Tanta University, Tanta, Egypt E-mail: nashwa.yossef@gmail.com), and S. El-Tawil, Ph.D., P.E., F.ASCE, (Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI 48109 E-mail: eltawil@umich.edu)
Section: Evaluation and Design of New and Existing Buildings against Disproportionate Collapse, pp. 498-509, (doi:  http://dx.doi.org/10.1061/9780784412374.044)

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Document type: Conference Proceeding Paper
Part of: 20th Analysis and Computation Specialty Conference
Abstract: The stability of steel columns that have suffered localized damage is investigated through analytical and computational means. An analytical model based on the Rayleigh-Ritz technique is proposed and used to study the effect of damage extent and location on column load carrying capacity. The analytical model is run in parallel with detailed finite element models that are validated using available experimental results. Analytical and simulation results show that localized flange loss in a column could lead to a severe reduction in its axial resistance.


ASCE Subject Headings:
Steel columns
Damage
Stability