城际动车组转向架构架疲劳安全性能评估研究

Study on the Fatigue Safety Performance Evaluation on Bogie Frame of Intercity EMU

为确保铁路车辆平稳可靠运行,针对城际动车组转向架构架,提出疲劳安全性能的评估方法和等效应力辐的计算方法。以CJ1-0502型城际动车组转向架构架为例,阐述基于服役跟踪动应力测试的动车组转向架构架疲劳安全性能测试方案,根据试验结果评估动车组转向架构架疲劳安全性能,针对不同的典型运用工况分析城际动车组转向架的动应力特征,提出动车组转向架构架中需要重点关注的位置,为合理制定车辆检查周期提供参考。

In order to ensure the stable and reliable operation of railway rolling stock, the paper proposes an evaluation method on fatigue safety and calculation formula of equivalent stress amplitude for bogie frame of intercity EMU. Taking the bogie frame of CJ1-0502 intercity train as an example, the paper introduces the main procedures of fatigue safety performance test of bogie frame, based on the dynamic stress service tracking test. The fatigue safety performance of bogie frame is evaluated according to the test results, and the dynamic stress characteristics of intercity EMU bogie frame under different work conditions are analyzed. The paper then points out two positions on the bogie frame which need special attention, and provides reference for setting maintenance cycle for rolling stock.