[S02D-03] FE-based simulation method for wheel-track vibration analysis of a jointed railway track with several types of sleepers
Keywords:rail joint, wheel-track vibration, grid sleeper
We develop the FE-based simulation method of wheel-track vibration phenomena of jointed railway track with several railjoint structures. Two rails are connected by a supported joint or a suspended joint, and supported by PC sleepers or grid sleepers. The vibration of a grid sleeper is modeled as a non-prismatic beam supported by elastic foundation. In the track supported by only the standard PC sleepers, the difference in joint support structures does not have influence on the maximum values of the underface stress and and the vertical acceleration of sleepers. The railjoint supported by a grid sleeper enables us to reduce the ballast traction and vertial accelaration because of high stiffness and heavy weight of the grid sleeper.