横风作用下列车动力车运行安全性与动态特性试验研究  

Experimental Study on Running Safety and Dynamic Characteristic of Train Power Car Under Crosswind Action

作　　者：张志超 屈东 李谷 储高峰 祖宏林 何德华 ZHANG Zhichao;QU Dong;LI Gu;CHU Gaofeng;ZU Honglin;HE Dehua(Locomotive&Car Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Ministry of Technology and Information,China Railway Xi’an Group Co.,Ltd.,Xi’an 710054 Shaanxi,China)

机构地区：[1]中国铁道科学研究院集团有限公司机车车辆研究所,北京100081 [2]中国铁路西安局集团有限公司科技和信息化部,西安710054

出　　处：《铁道机车车辆》2023年第3期9-16,共8页Railway Locomotive & Car

摘　　要：强风作用会对列车运行安全性与稳定性产生重要影响作用,文中通过深入分析某动力集中动车组在大风环境下的动力学试验数据,明确了横风作用下列车动力车的主要运动形态,研究了横风风压、线路线况、列车速度等对列车运行安全性与动态特性的影响规律。结果表明:横风作用主要引起列车动力车车体侧滚和横摆运动,同时伴有一定摇头运动,使其脱轨系数、轮重减载率、轮轴横向力等安全性指标和车体横向振动加速度、横向平稳性指标数值明显增大;不同线路工况时横风对轮轨动力响应的影响存在差异,迎风曲线上车体向外轨的贴靠使轮轨横向力增大,背风曲线上横风阻止车体向内轨侧贴靠,使轮轨横向力有所减小;横风作用下脱轨系数、轮轴横向力、车体横向振动加速度会随着列车速度提高而增大,而轮重减载率和车体侧滚角基本不受车速影响。Strong wind affects train running safety and stability greatly.In this paper,the dynamic test data of certain high-speed train under the action of strong wind has been investigated to clarify the train main motion form under crosswind action,and the influences of the cross wind pressure,line condition and train running speed on train running safety and dynamic characteristic have been researched significantly.The results indicate that crosswind action could lead to obvious rolling and transverse motions of train car body as well as some yaw motion,and thus would make the running safety indexes and car body lateral riding indexes increase greatly.And these crosswind action influences have some difference under different line conditions.The car body being attached to the outer rail on the windward curve would increase the wheel-rail lateral forces,but the car body being attached to the inner rail on the leeward curve would decrease the wheel-rail lateral forces.In addition,the derailment coefficient,lateral wheelset force and car body lateral acceleration increase with the increasing train running speed,but the wheel unload ratio and car body rolling angle keep constant with the running speed.

关 键 词：横风作用 运行安全性 动力学试验 空气压力 

分 类 号：U260.34[机械工程—车辆工程]