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http://dx.doi.org/10.7781/kjoss.2012.24.1.101

Characteristic of Local Behavior in Orthotropic Steel Deck Bridge with Open Ribs according to Running Vehicle  

Lee, Sung-Jin (한국해양대학교 토목공학과)
Kyung, Kab-Soo (한국해양대학교 토목공학과)
Park, Jin-Eun (나고야대학 사회기반공학과)
Lee, Hee-Hyun ((주)씨티씨)
Publication Information
Journal of Korean Society of Steel Construction / v.24, no.1, 2012 , pp. 101-108 More about this Journal
Abstract
The orthotropic steel deck bridge made by using relatively thin steel plate, and structural members such as transverse and longitudinal ribs, cross beam, etc. in the bridge are fabricated with complex shape by welding. Therefore, the possibility occurring deformation and defects by welding is very high, and stress states in the welded connection parts are very complex. Also, the fatigue cracks in orthotropic steel deck bridge are happening fromthe welded connection parts of secondary member than main member. However, stress evaluation for main members is mainly carried out in the design process of the bridge, detailed stress evaluation and characteristic analysis is not almost reviewed in the structural details which fatigue crack occurred. For the orthotropic steel deck bridge with open ribs which has been serviced for 29 years, in this study, the cause of fatigue crack is investigated and the fatigue safety of the bridge is examined based on fieldmeasurement by the loading test and real traffic condition. Also, structural analyses using gridmodel and detailed analysis model were carried out for the welded connection parts of longitudinal rib and diaphramthat fatigue crack occurred. Additionally, the behavior characteristics due to running vehicles were investigated by using influence area analysis for these structural details, and the occurrence causes of fatigue crack in the target bridge were clarified.
Keywords
orthotropic steel deck bridge; local behavior; fatigue damage; fatigue behavior; running vehicle;
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