Influences of relative position between turnout and bridge on coupled vibration of train-turnout-bridge system

被引：0
|
作者：
Quan S. [1 ]
Wang P. [1 ]
Cheng R. [1 ]
机构：
[1] MOE Key Laboratory of High-Speed Railway Engineering, Southwest Jiaotong University
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2010年 / 45卷 / 05期
关键词：
Relative position between turnout and bridge; Train; Turnout on bridge; Vibration;
D O I：
10.3969/j.issn.0258-2724.2010.05.002
中图分类号：
学科分类号：
摘要：
In order to determine the reasonable relative position between turnout and bridge, a vibration analysis model for the coupled train-turnout-bridge system was built, and the numerical simulation method was applied to analyze the influences of the relative position between turnout and bridge on the dynamic characteristics of train, turnout, and bridge when No.18 single crossover turnout was located at a 6×32 m continuous beam bridge at train speed of 350 km/h. The results indicate that the relative position between turnout and bridge has little influence on the maximum dynamic wheel load, flange force, displacements of switch rail and nose rail, and running stability of trains, but has a significant influence on the maximum load reduction rate, derailment coefficient, dynamic stress of rail, and acceleration of bridge; and the reasonable relative position between turnout and bridge is that the frog should be located in the range of 1/8 to 1/4 of the third span in the train direction.
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页码：663 / 668
页数：5
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