重载铁路线路加固体系车线动力分析

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摘要针对既有线下进行框架桥顶进施工对铁路干线形成压力及列车以一定速度通过施工现场对重载铁路线加固体系形成强度大时间长的冲击振动，引入动力计算反映列车行驶振动及速度变化导致列车与轨道或加固体系共振，对重载铁路加固体系、车线耦合振动体系研究背景与基于全过程迭代的车线动力分析理论进行论述；对某重载铁路加固体系以平面车辆模型过桥方式分析车辆通过加固体系时的动力响应状态、车辆过桥时加固体系竖向位移及加速度、轮对减载状况；获得重载铁路桥涵顶进施工慢行限速60 km/h线路加固体系动力分析结论。

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	杨静静1
	张楠1
	战家旺1
	高玉兰2
	彭斌2

关键词 ：重载铁路, 框架桥顶进施工, 线路加固, 车线动力分析, 全过程迭代

Abstract： It’s difficult to start a frame bridge’s jacking construction under existing lines for the busy railways. Larger vibration is induced to the reinforcement system especially for heavy railways when a vehicle passes the construction field at some speed. It is necessary to do the dynamic calculation to reflect the vibration or the resonance between the train and the rail or the reinforcement system as a result of the change of the speed. It first describes background of heavy rail jacking reinforcement and vehicle-line coupling vibration and the vehicle-line dynamic analysis method based on inter-system iteration in this paper. As a case study, the dynamic responses of heavy rail reinforcement system are calculated for plane vehicle model passing the bridge; the vertical displacement and acceleration of reinforcement system and the vertical wheel-rail interaction force are analyzed. It can be concluded from the results that the heavy rail reinforcement system is safe when a train is passing at a speed of 60km/h.

Key words： heavy rail frame bridge’s jacking construction line reinforcement vehicle-line dynamic analysis inter-system iteration

收稿日期: 2014-03-03 出版日期: 2015-05-25

引用本文:

杨静静1，张楠1，战家旺1，高玉兰2，彭斌2. 重载铁路线路加固体系车线动力分析[J]. 振动与冲击, 2015, 34(10): 147-151.
YANG Jing-jing1，ZHANG Nan1，ZHAN Jia-wang1，GAO Yu-lan2，PENG Bin2. Vehicle-line dynamic analysis of heavy rail reinforcement system. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(10): 147-151.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2015/V34/I10/147

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