Dynamic Response And Comfort Analysis Of Intercity High-speed Railway Bridge Under Crossing Of Two Trains

The crossing of two face-to-face moving trains has become a basic operation mode, the study of dynamic response under this condition is necessary. In this paper, a dynamic response and comfort analysis model of intercity high-speed railway bridge under crossing of two trains was developed by ANSYS, and the dynamic response of trains, tracks and bridges caused by single train or crossing of two trains was calculated and analyzed based on LS-DYNA. The following aspects were included in this paper.1. Based on finite element analysis platform, a dynamic analysis model of intercity high-speed railway under crossing of two trains is developed with full consideration of the high-speed train, bridge structure, track irregularity and other characteristics, and the theoretical model is validated using the measure data for Shanghai-Nanjing Intercity High Speed Railway.2. Using the dynamics analysis model to simulate a single, two-way train through the whole process of intercity high-speed railway bridge under the speed of300km/h, and as a case study, dynamic response during a single train and two-way train is calculated.3. The differences of dynamic response indicators are obtained between single and crossing of two trains after compared their dynamic response law. The law of dynamic response are analyzed under different influence factors such as speed, rack irregularity and so on, at the same time, the influenced degree of different factors is obtained on the ride comfort and safety under the condition of crossing of two trains.