摘要
为给高速道岔结构设计提供理论依据,运用高速列车-道岔空间耦合振动理论,以道岔结构不平顺为激励,分析了高速列车通过道岔时的轮轨作用力、车辆和道岔的振动特性.结果表明:辙叉处轮轨冲击比转辙器处剧烈,轮轨力和车辆系统的加速度存在4个峰值;尖轨和心轨的振动加速度比基本轨大,而衰减比基本轨慢;间隔铁传递的垂向力大于枕上压力.
To provide a theoretic reference for the design of high-speed turnout, the contact force between wheel and rail and the vibration properties of a vehicle-turnout coupling system were analyzed by using the spatial coupling vibration theory for high-speed vehicle-turnout, and the structure irregularity of high-speed, turnout was used as the vibration excitation. The research results show that the impact between wheel and rail is more exquisite at switch than at frog; the contact force between wheel and rail and the acceleration of a vehicle have 4 peak values; compared with switch rail and point rail, stock rail has a small acceleration, but the attenuation of its acceleration is fast; the vertical force transferred by spacer block is bigger than that transferred by rail fastening.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2008年第4期453-458,共6页
Journal of Southwest Jiaotong University
基金
国家高技术研究发展计划(863计划)资助项目(2007AA11Z129)
关键词
高速道岔
耦合
振动特性
high-speed turnout
coupling
vibration property
