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Stress Concentration at Connection and Cut-Out Parts according to Existence of Scallop and Diaphragms on Orthotropic Steel Decks  

Shin, Jae Choul (포항산업과학연구원 강구조연구소 토목구조연구실 연구원)
Publication Information
Journal of Korean Society of Steel Construction / v.18, no.3, 2006 , pp. 289-299 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 phenomenon because of out of plane and oil-caning deformation caused by longitudinal rib distortion with shear force and distortion. In order to reduce the stress concentration phenomenon and improving fatigue performance at the crosing point and cut-out, structural analysis was performed considering the existence of scalop at conection and diaphragm which have same plane with transverse rib placed inside of longitudinal rib. Result o f the analysis show that there are the largest efect of stres concentration reduction when diaphragms are installed without scallop at connection, therefore these detail can improve the fatigue performance of orthotropic steel decks.
Keywords
orthotropic stel decks; fatigue; longitudinal ribs; transverse rib; diaphragms;
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