The Study Of Reasonable Bending Stiffness Values And The Dynamic Response Law Of Rail Joints On30t Axle Load Heavy Haul Railway

In this thesis, it makes a simulation under30t axle load of two rail joint bars (standarddouble-headed plywood and full-section plywood) on the use of25t axle load heavy haulrailway, studies the effects of axle load and bending rigidity of plywood on the force anddeformation of plywood. In addition, according to the Hertz contact theory, the thesis writesthe rail joint dynamic response finite element program, which uses the principle of mini-mum potential energy to create dynamic differential equations and solving principle ofWilson-θ method. In this way, it researches the influence of incentive parameters of railjoint, the train speed and track stiffness on the dynamic response, gives the range of bendingstiffness of plywood that is adapted to30t axle load and provides a theoretical basis of de-sign of30t axle load heavy rail joint track structure.