基于轮轨非Hertz接触的货运铁路钢轨磨耗研究  

Study on Rail Wear of Freight Railways Based on Non-Hertzian Wheel-rail Contact

作　　者：杨玉明 YANG Yuming(Xinyi-Changxing Railway Co.,Ltd.,Nanjing 210018,China)

机构地区：[1]新长铁路有限责任公司,南京210018

出　　处：《高速铁路技术》2024年第3期34-38,共5页High Speed Railway Technology

摘　　要：随着铁路运营的发展,货车车辆轴重不断增加,钢轨磨耗异常严重。本文采用UM动力学软件,建立了三维铁路钢轨磨耗模型,计算了红柠铁路专用线部分线路条件下的钢轨磨耗情况。结果表明:(1)线路直线段内外钢轨的磨耗程度相近且较轻;(2)缓和曲线段内轨的磨耗集中分布在距离轮轨作用边轨头约10 mm的走行面处,而外轨磨耗集中分布在外轨内侧半径为80 mm的弧段曲线上;(3)圆曲线段外轨磨耗严重,主要分布在轨头内侧半径为80 mm的弧段上,半径为300 mm的弧段上也有明显磨耗;(4)内轨磨耗主要分布在轨头半径为300 mm的弧段上,半径为80 mm的弧段上磨耗较轻。With the development of railway operations,the increasing axle loads of freight vehicles have led to severe rail wear.This study employed the UM dynamics software to establish a three-dimensional model of rail wear for freight railways.Calculations were conducted for rail wear under specific track conditions along a private siding of Hongliulin-Shemmuxi Railway.The results reveal that:(1)Wear on the inner and outer rails along straight sections is comparably minor,with little difference observed between them.(2)In transition curves,wear on the inner rail is predominantly concentrated within a distance of approximately 10 mm from the running surface near the rail edge under wheel-rail interaction,whereas outer rail wear is mainly distributed along 80 mm radius arc section on the inner side of the rail.(3)For outer rails in circular curves,wear is severe,primarily occurring on the inner-side arc sections with a radius of 80 mm,with noticeable wear also present on arc sections of 300 mm radius.(4)Inner rail wear is primarily focused on arc sections with 300 mm radius at the rail head,while wear on 80 mm radius arc sections is relatively light.

关 键 词：钢轨磨耗 三维铁路钢轨磨耗模型 外轨磨耗 内轨磨耗 

分 类 号：U213.4[交通运输工程—道路与铁道工程]