接触网系统舞动影响因素与防舞措施研究  

Study on Factors Affecting of OCS Galloping and Anti-galloping Measures

作　　者：蒋锡健[1] JIANG Xijian

机构地区：[1]中铁第四勘察设计院集团有限公司

出　　处：《电气化铁道》2023年第3期55-59,共5页Electric Railway

基　　金：中铁第四勘察设计院集团有限公司科技研发计划项目“接触网防舞动措施研究”(2020K076)。

摘　　要：接触网覆冰导线受风激励会产生舞动,加剧设备损坏,影响列车安全运行。通过建立接触网及其附加导线的有限元模型,并根据风洞试验得到的气动力系数计算接触网的空气动力荷载;在不同工况下对附加导线和接触网进行仿真。研究结果表明:覆冰厚度对舞动影响较小;风速越大,舞动程度越大且增幅越大;风攻角越大,舞动程度越小,且风攻角在90°~150°时舞动程度降低得更加明显。通过对比多种防舞方案,确定了最佳方案,并对防舞效果进行评估。The iced conductors of OCS will induce galloping under the wind excitation,accelerating the equipment damage and affecting the safe operation of the train.By establishing the finite element models of OCS and its additional wires,and on the basis of the obtained aerodynamic load of OCS calculated by the aerodynamic coefficient obtained from the wind tunnel test,the simulation on additional wires and OCS is made under different conditions.The results of studies indicate that the thickness of ice cover has a small impact on galloping;the higher the wind speed,the greater the degree and amplitude of the galloping;the larger the wind attack angle,the smaller the degree of the galloping,and the degree of the galloping decreases more significantly when the wind attack angle is between 90°and 150°.By comparing multiple anti-galloping schemes,the most optimized scheme is determined and the anti-galloping effect is evaluated.

关 键 词：接触网舞动 风速 风攻角 防舞措施 

分 类 号：U225.7[交通运输工程—道路与铁道工程]