Projects(51708558,51878673,U1734208,52078485,U1934217,U1934209)supported by the National Natural Science Foundation of China;Project(2020JJ5740)supported by the Natural Science Foundation of Hunan Province,China;Project(KF2020-03)supported by the Key Open Fund of State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures,China;Project(2020-Special-02)supported by the Science and Technology Research and Development Program of China Railway Group Limited。
Random dynamic responses caused by the uncertainty of structural parameters of the coupled train-ballasted track-subgrade system under train loading can pose safety concerns to the train operation.This paper introduce...