高铁接触网悬吊线索疲劳寿命研究进展

Research progress on fatigue life of suspension wires in catenary of high-speed railway

由于列车速度的不断提高,接触网悬吊线索的振动幅度也随之增大,对列车的安全行驶造成了不良的影响。接触网悬吊线索疲劳寿命与列车安全行驶密切相关。分析了接触网悬吊线索在材料疲劳、弓网关系等方面的性能,并在已有研究成果的分析与总结的基础上,指出了目前接触网悬吊线索疲劳性能研究中存在的接触网部件变形、弓网空气动力学、研究方法等问题,展望了接触网和环境风场之间的双向流固耦合、接触网实测数据的维度等方面的研究与趋势。

Due to the increased train speed,the vibration amplitude of the suspension wires in the catenary increases,with a bad effect on the safe driving of the train.The fatigue life of the suspension wires is closely related to the safe driving of the train.In this paper,the performance of the catenary suspension wires with respect to the material fatigue and the pantographcatenary relationship is analyzed,and the existing problems of the catenary component deformation,the pantograph-catenary aerodynamics and the research methods for the study of the fatigue performance of the catenary suspension wires are pointed out,and the future research and development trends in the aspects of the two-way fluid-solid interaction between the catenary and the environmental wind field,the dimensions of the measured data of the catenary are highlighted.