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http://dx.doi.org/10.11112/jksmi.2010.14.2.176

An Analysis and Retrofit of U-rib Fatigue Cracks in the Steel Deck Bridge  

Ryu, Duck-Yong (한국시설안전공단 진단본부)
Jung, Hie-Young (서울시립대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.14, no.2, 2010 , pp. 176-183 More about this Journal
Abstract
In the steel deck box girder bridges, the deck is composed of deck plate, longitudinal and lateral direction ribs. The bridge, that is considered in this study, has been used for about 40 years and, recently, several cracks were found in the connection area of U-ribs. Further, additional cracks were occurred after some lateral rib plates and longitudinal frames were attached for the purpose of reinforcement. Therefore, the connection method in the U-ribs reinforcement was changed from the bolting to the weldment to get rid of stress concentration and further cracking. In this study, the stress in the U-ribs connection was analysed numerically and variable amplitude stress for the real traffic loads was measured experimentally before and after the frame reinforcement. Finally, the effects of reinforcement method were investigated and discussed.
Keywords
Steel Deck Box Girder Bridge; U-Rib; Fatigue Crack; Variable Amplitude Stress;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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