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A Numerical Analysis on the Diaphragm Structures for Improving Fatigue Performance in Orthotropic Steel Decks  

Shin, Jae Choul (경희대학교)
An, Zu Og (경희대학교 토목공학과)
Yoon, Tae Yang (RIST 강구조연구소)
Publication Information
Journal of Korean Society of Steel Construction / v.19, no.6, 2007 , pp. 559-573 More about this Journal
Abstract
Orthotropic steel decks are manufactured by welding thin plates therefore it is inevitable that there are abundant works of welding process. On connection of transverse rib web, crossing point of longitudinal rib, transverse rib and deck plate and cut-out parts of transverse rib are the significant position of stress concentration because of out of plane and oil-canning deformation caused by longitudinal rib distortion with shear force and distortion. At the current research, the crossing point where the orthotropic steel decks's effect of improving fatigue performance are high, not placing scallop and diaphragm which have same plane with transverse rib placed inside of longitudinal rib at the same time, the reduce effects of stress concentration at the cut-out section and the crossing are high. Especially the installation of the diaphragm causing great effects based on research results to stress concentration appearance reduce effects at the cut-out section, putting radius of curvature of the diaphragm's top and bottom as a target, as a result of carrying out the parametric analysis an optimal diaphragm form that has great effects in fatigue performance came to a conclusion. Also based on optimal diaphragm form, an advantage of the diaphragm optimal setting position for improvement of the fatigue performance came to a conclusion.
Keywords
diaphragm form; diaphragm optimal setting position; orthotropic steel decks; fatigue; stress concentration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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