Numerical simulation and field experiment of high-speed train-track-bridge system dynamics

作者：Wanming Zhai, Chengbiao Cai, K Y Wang · 年份：2026 · DOI：10.1201/9781003760825-69 · 被引用次数：15 · 研究领域：Railway Engineering and Dynamics、Civil and Geotechnical Engineering Research、Simulation and Modeling Applications

A numerical simulation technique is developed to analyse the train-track-bridge system dynamic responses when a train traverses a bridge. The basic idea of the simulation is to consider the train, the track and the bridge as a whole interactive system. The modelling aspect of the train-tack-bridge system is presented. A large-scale software, TTBSIM, is designed to simulate the dynamic responses of the complete train-track-bridge system so as to assess the running safety and the ride comfort of trains traversing bridges in the design stage. Two high-speed running experiments were earned out on the Qinhuangdao-Shenyang line, which were used to validate the TTBSIM technique. Results show good con-elation between simulation and measurement. TTBSIM software has provided a dynamic assessment tool for the design of bridges on new high-speed railways.