The effect of rail corrugation on dynamic characteristics of heavy haul railway ballast bed

被引：0
|
作者：
Cui X. [1 ]
Ma C. [1 ]
Jin F. [1 ]
机构：
[1] School of Civil Engineering, Beijing Jiaotong University, Beijing
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2021年 / 49卷 / 01期
关键词：
Ballast bed; Discrete element method; Dynamic response; Heavy haul railway; Rail corrugation;
D O I：
10.13245/j.hust.210119
中图分类号：
学科分类号：
摘要：
To analyze the effect of rail corrugation on the dynamic characteristics of heavy haul railway ballast bed,considering the irregular shapes of ballast particles,the numerical model of ballast bed was established based on discrete element method (DEM).The dynamic load applied on the sleeper was calculated from the vehicle-track coupling dynamic model,and the dynamic responses of the ballast bed under the condition of rail corrugation were analyzed.Results show that the rail corrugation will reduce the stability of the ballast bed and significantly increase the vibration level of the ballast bed. There will be a small increase in the contact force between the ballast particles in rail corrugation section.The sliding displacement and friction energy between the ballast particles will be increased by the rail corrugation,and the wear between the ballast particles will also be increased. In contrast,the rail corrugation has the greatest effect on the vibration accelerations of ballast particles,followed by the effect on the wear of ballast particles,and the least impact on the contact forces between ballast particles. © 2021, Editorial Board of Journal of Huazhong University of Science and Technology. All right reserved.
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页码：110 / 115
页数：5
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