摘要
为了得到最适合用于高速列车在横风作用下过岔性能评估的安全性能指标,同时提出高速列车横风作用下直逆向和侧逆向通过道岔时的运行安全域,通过建立高速列车过岔气动力学模型和横风-列车-道岔耦合多体系统动力学模型,深入探究了高速列车在横风作用下通过道岔时的安全性。研究表明:在横风作用下,迎风侧的压力显著提高,在头车两侧面形成明显的压差,使得头车在运行过程中更容易发生脱轨侧翻的情况;在高速列车直逆向过岔时,当所受横风风速不超过15m/s时,高速列车可以以250km/h速度过岔;当所受横风风速达到20m/s及以上时,高速列车直逆向过岔速度应小于250km/h;在高速列车侧逆向过岔时,当横风风速大于15m/s时,高速列车侧逆向过岔速度应小于80km/h。在横风作用下,高速列车运行时头车更容易发生脱轨侧翻情况;高速列车直逆向过岔且当横风风速达到8级及以上时,列车过岔速度应小于250km/h;高速列车侧逆向过岔且当横风风速达到7级及以上时,列车过岔速度应小于80km/h。研究结果可以为高速列车在不同横风条件下过岔的平稳性及安全性提供参考。
In order to obtain the safety performance index that is most suitable for the performance evaluation of high-speed trains passing through turnouts under crosswind,the operation safety domains of high-speed trains passing through turnouts in straight and side reverse directions under crosswind are proposed.By establishing the aerodynamic model of high-speed trains passing through turnouts and the dynamic model of crosswind-trainturnout coupling multi-body system,the safety of high-speed trains passing through turnouts under crosswind was deeply explored.The results show that under the action of crosswind,the pressure on the windward side increases significantly,and the obvious pressure difference is formed on both sides of the head car,which makes the head car more prone to derailment and rollover during operation.When the high-speed train passes through the turnout directly and reversely,when the crosswind wind speed is not more than 15 m/s,the high-speed train can pass through the turnout at a speed of 250 km/h;when the crosswind speed reaches 20 m/s and above,the speed of the high-speed train should be less than 250 km/h.When the crosswind speed is greater than 15 m/s,the speed of the high-speed train side should be less than 80 km/h.Under the action of crosswind,the head car is more prone to derailment and rollover when the high-speed train runs.When the high-speed train passes through the turnout directly and reversely,when the crosswind speed reaches 8 and above,the speed of the train passing through the turnout should be less than 250 km/h.When the side of the high-speed train passes through the turnout reversely,when the crosswind speed reaches 7 and above,the speed of the train passing through the turnout should be less than 80 km/h.The research results can provide reference for the smoothness and safety of highspeed trains passing through turnouts under different crosswind conditions.
作者
林凤涛
许辉
杨政达
谭荣凯
黄国胜
伏松平
李强
王子旭
杜瑞廷
Lin Fengtao;Xu Hui;Yang Zhengda;Tan Rongkai;Huang Guosheng;Fu Songping;Li Qiang;Wang Zixu;Du Ruiting(School of Mechatronics&Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China;China Railway Construction Electrification Bureau Group Co.,Ltd,Beijing 100043,China;China National Railway Group Co.,Ltd,Beijing 100844,China;Xi’an Locomotive Depot,China Railway Xi’an Bureau Group Co.,Ltd.,Xi’an 710000,China;Zhejiang Yongkang Vocational and Technical College,Yongkang 321300,China)
出处
《华东交通大学学报》
2025年第4期88-99,共12页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(52065021)
江西省领军人才项目(S2021GDKX1442)
江西省自然科学基金项目(20242BAB26086,20224BAB204042)
国铁集团科技研究开发计划课题(N2024G028)。
关键词
列车动力学
高速列车
横风
过岔安全性
气动性能
train dynamics
high-speed train
crosswind
turnout safety
aerodynamic performance
