高速重载线路钢轨损伤特性分析  

Analysis of Rail Damage Behavior of High-speed and Heavy-haul Railway

作　　者：赵雪芹[1] 钟雯[1] 王文健[1] 刘启跃[1] 

机构地区：[1]西南交通大学摩擦学研究所

出　　处：《润滑与密封》2007年第10期100-102,138,共4页Lubrication Engineering

基　　金：国家自然科学基金项目(50675183);高等学校博士学科点专项科研基金项目(20060613017)

摘　　要：结合广深线钢轨斜线状裂纹损伤特性分析,对比分析了高速与重载线路钢轨的损伤差异。结果表明:重载线路钢轨主要以磨损和塑性变形为主,而高速线路钢轨主要表现为疲劳损伤,无明显的塑性变形发生;U71Mn钢轨的含碳量低,具有较好的韧性,相比PD3钢轨,U71Mn更适于铺设于高速轻载线路。The difference of rail damage on high-speed and heavy-haul railway was analyzed by the formation mechanism of oblique crack rail in Guangzhou-Shenzhen railway. The results indicate that the wear and the plastic deformation are dominant for heavy-haul curve rail. However, the damage of high-speed rail is fatigue primarily. The obvious plastic deformation does not exist in the oblique crack rail. The carbon content of U71Mn rail is lower comparing to PD3 rail. Furthermore,U71Mn rail is fit for the high-speed and light-haul railway because of better toughness.

关 键 词：钢轨 接触疲劳 塑性变形 含碳量 

分 类 号：U213.42[交通运输工程—道路与铁道工程]