Theoretical Analysis on Dynamic Safety of Speed-Raised Train Passing through Curved-Track

摘要

In order to theoretically investigate the negotiation safety of speed-raised train in Chinese railway, dynamic indices and the lateral dynamic interaction between trains and tracks are simulated and analyzed when typical trains pass through different curved tracks, based on a theory of vehicle and track coupling dynamics. These simulations consist of vehicles passing through small-radius curved tacks, and speed-raised passenger trains and freight trains through different tracks at speeds of 160 km/h and 120 km/h respectively. According to the railway vehicles specification for evaluation of dynamics performance and accreditation test, the dynamic indices are valuated systemically. Theoretical results obtained from the paper show that strengthening technologies should be applied in mountain railways to ensure the running safety, and the minimums of curve radius are 1 400 m and 1 000 m for the aim of raising passenger train speeds at 160 km/h and freight train speeds at 120 km/h, respectively, and both of the negotiation behaviors of locomotives and passenger cars are the same and the behaviors of freight trucks are finer than those of locomotives.