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http://dx.doi.org/10.5000/EESK.2018.22.6.353

Progressive Collapse-Resistant Rotational Capacity Evaluation of WUF-W Connection by Fracture Index Analysis  

Kim, Seonwoong (Department of Smart City Engineering, Youngsan University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.22, no.6, 2018 , pp. 353-360 More about this Journal
Abstract
This paper is to investigate the micro-behavior of the double-span beams with WUF-W seismic connection under combined axial tension and moment and to propose the rational rotational capacity of it for progressive collapse-resistant analysis and design addressing the stress and strain transfer mechanism. To this end, the behavior of the double-span beams under the column missing event is first investigated using the advanced nonlinear finite element analysis. The characteristics of fracture indices of double-span beams with WUF-W connection under combined axial tension and flexural moment are addressed and then proposed the rational rotational capacity as the basic datum for the progressive collapse-resistant design and analysis. The distribution of fracture indices related to stress and strain for the double-span beams is investigated based on a material and geometric nonlinear finite element analysis. Furthermore, the micro-behavior for earthquake and progressive collapse is explicitly different.
Keywords
Progressive collapse; Steel moment frames; Connection; Numerical analysis; Catenary action; Fracture index;
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Times Cited By KSCI : 1  (Citation Analysis)
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