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铁路提速后,由于既有桥梁设计时速仅为120km,同时因为装有转8A转向架的货物列车在速度达到78km/h时出现强烈的摆振,因此出现了威胁桥梁行车安全的一些问题。文中指出了这些关键问题,并提出相应的建议。
After speeding up the railway, some existing problems have been threatened the traffic safety of the bridge because of the design speed of the existing bridge being only 120km / h and the strong shimmy occurring at the speed of 78km / h for the freight train with Zhuan 8A bogie. The paper pointed out these key issues and put forward corresponding suggestions.