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http://dx.doi.org/10.12652/Ksce.2012.32.6D.663

The Fatigue Life Evaluation of Rail on the Concrete Track of High Speed Railway by Analysis of the Vehicle/Track Interaction  

Lim, Hyoung-Jun (서울과학기술대학교 철도전문대학원)
Sung, Deok-Yong (대원대학교 철도건설과)
Park, Yong-Gul (서울과학기술대학교 철도전문대학원)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.32, no.6D, 2012 , pp. 663-671 More about this Journal
Abstract
The demand of CWR is rapidly increasing because of the adaptation of concrete track, the need for rapid and comfortable ride, and the reduction of maintenance cost. Because of short applying period of the concrete track, there is not a case of CWR fracture in Korea caused by repeated load of the train, which makes it difficult to calculate replacement period of rail based on rail fatigue life using an actual field data. This study thus inspected the bending stress at rail bottom through analyzing the vehicle/track interaction, performed multiple regression analysis on the data, deducted the bending stress prediction equations by the speed and the surface irregularity. Finally, the fatigue life of CWR on the concrete track was predicted based on the prediction equations for bending stress at rail bottom.
Keywords
vehicle/track interaction analysis; concrete track; bending stress at rail bottom; multiple regression analysis; fatigue life;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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