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Fatigue Life Estimation Method Considering Traffic Properties for Steel Highway Girder Bridge  

Lee, Hee-Hyun (씨티씨(주))
Kyung, Kab-Soo (한국해양대학교 토목환경공학부)
Jeon, Jun-Chang (씨티씨(주))
Publication Information
Journal of Korean Society of Steel Construction / v.22, no.3, 2010 , pp. 209-218 More about this Journal
Abstract
The fatigue phenomenon, which is induced by stress accumulation due to the repeated loading of vehicles in the long term, is one of the main factors of the span of life of a steel bridge. In this paper, the effects of traffic properties on the fatigue life of ordinary short- and medium-span steel plate girder bridges that are exposed to relatively large dynamic effects are investigated. From the analysis, it was known that the fatigue life of the bridge becomes shorter with increasing traffic volume and number of large vehicles, and is affected by the weights of the vehicles. Based on the analysis results, a new parameter that can represent the traffic property that affects the fatigue life of the subject bridge is suggested, and the validity of the parameter is confirmed.
Keywords
steel highway bridge; fatigue; fatigue life; loading property; equivalent load;
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