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Robustness of Prototype Steel Frame Buildings against Column Loss: Assessment and Comparisons



Joseph A. Main, Judy Liu


This paper considers the robustness of prototype 10-story steel moment-frame and braced-frame buildings. Reduced modeling approaches are presented for steel moment-frame and braced-frame buildings with composite floor slabs, and these approaches are used to analyze the nonlinear system behavior of these types of structures under column loss scenarios. The three-dimensional reduced structural models include the composite floor slab and incorporate assemblies of nonlinear spring elements to represent the beam-to-column connections. For the braced-frame buildings, modeling of the buckling behavior of braces incorporates nonlinear rotational springs representing the out-of-plane behavior of the gusset-plate connections. Analysis results are presented, and the behavior of braced frame and moment frame buildings under column loss is compared.
Proceedings Title
Proceedings of the 2013 Structures Congress
Conference Dates
May 2-4, 2013
Conference Location
Pittsburgh, PA


Buildings, Connections, Composite materials, Finite element method, Floors, Nonlinear analysis, Progressive collapse, Steel structures


Main, J. and Liu, J. (2013), Robustness of Prototype Steel Frame Buildings against Column Loss: Assessment and Comparisons, Proceedings of the 2013 Structures Congress, Pittsburgh, PA, [online], (Accessed April 22, 2024)
Created May 2, 2013, Updated November 10, 2018