Spatial Coupling Vibration Properties of High-Speed Vehicle-Turnout
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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.Abstract: 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.
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Key words:
- high-speed turnout /
- coupling /
- vibration property
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