A model for vehicle vibration analysis of a heavy haul train with 6-DOF and a beam segment element for a heavy haul railway bridge were established, and the coupling motion equations of a heavy haul vehicle-bridge system were built using the compatible condition of displacements and the balance relation of wheel-rail interaction forces at wheel-rail contact points. Adopting the iteration technique, the vehicle-bridge coupled vibration analysis program was established. The factors influencing the mid-span deflection of a simply-supported girder railway bridge were investigated systematically. T...
