Parametric Study on Dynamic Performance of Transition Section of Steel Spring Floating Slab Track

The steel spring floating slab track (SSFST) has been adopted in lots of track engineering due to good vibration isolation efficiency; however, how to reasonably handle with the transition section of SSFST is still a big problem in the design phase. In this paper, the influence of various parameters on the dynamic performance of transition section of SSFST is researched. These parameters related to the layout of steel spring, the stiffness of steel spring, neighboring track style and the speed of passing train are considered as different factors including different level values. Based on the theory of orthogonal experimental design, a parametric study is performed by a series of three-dimensional finite element dynamic models, considering the moving loads of wheel set are directly applied on the railhead surface. The displacement and acceleration of the rail and slab are obtained to analyze the dynamic performance of the transition section of SSFST. The numerical results could be regarded as a reference for the design of the transition section of SSFST.