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- W2053303330 abstract "Dynamic wheel-rail force can be limited to high-frequency components owing to imperfections in the wheel-rail contact surface (P1) and may also contain low-frequency components owing to coupled wheel-rail vibrations in phase on the ballast (P2). Previous studies on dynamic wheel-rail forces have focused on the quality index of surface roughness (QI) of only rail welds. In this study, the influences of rail surface roughness and track stiffness of a ballasted track on dynamic wheel-rail forces currently employed in high-speed lines were assessed by performing field measurements using actual vehicles running along the service lines. The theoretical dynamic wheel-rail force determined using a previous theory was compared with the dynamic wheel-rail force determined through field measurements. At a constant QI, an increase in the vertical track stiffness caused an increase in P2. Therefore, the vertical track stiffness affects P2 more strongly than P1. Hence, P1 is more affected by QI and train velocity than is P2. Further, it is inferred that the results of multiple regression analysis obtained using measured data such as QI, vertical track stiffness, and P2 can be used to predict the peak dynamic forces acting on ballasted tracks." @default.
- W2053303330 created "2016-06-24" @default.
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- W2053303330 date "2013-07-01" @default.
- W2053303330 modified "2023-10-14" @default.
- W2053303330 title "Influence of Track Support Stiffness of Ballasted Track on Dynamic Wheel-Rail Forces" @default.
- W2053303330 cites W2016613456 @default.
- W2053303330 cites W2136267079 @default.
- W2053303330 doi "https://doi.org/10.1061/(asce)te.1943-5436.0000543" @default.
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