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Improvement of the Design and Construction Technique of Orthotropic Steel Deck Bridges : Fatigue Strength of Three Dimensional Full-scaled Model  

Oh, Soon Taek (서울산업대학교 구조공학과)
Publication Information
Journal of Korean Society of Steel Construction / v.18, no.1, 2006 , pp. 23-32 More about this Journal
Abstract
This study was conducted to improve the design and construction technique of orthotropic steel-deck bridges. After conducting an F.E.M. analysis of the various rib types of the connection details, static and fatigue tests were conducted, using a three-dimensional, full-scaled, orthotropic, steel-deck-plate model with internal diaphrams, to check the fatigue strength depending on the types of details. The model structure was made of two types of longitudinal ribs: the domestic standard and the European rabbit types. The fatigue strength of the steel-deck system was found to have improved through the installation of an internal diaphram, as no cracks were found on the bottom round part of the scallop with a diaphram. There were no differences between the domestic and the European types of details in terms of strength may be partially influenced by the shape of the scallop and by the installation of an internal diaphram, but it can be improved more significantly according to the quality of the welding that will be done.
Keywords
longitudinal rib; transversal rib; internal diaphragm; in-plane behavior; fatigue test;
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