重载快速大运量区段P60钢轨鱼鳞伤和剥离掉块的研究  

Research of the 60kg/m rail Corner fine Cracks and Shelling Defects on Heavy-haul and Fast Speed Railway

作　　者：王志平[1] 

机构地区：[1]上海铁路局,上海200071

出　　处：《华东交通大学学报》2005年第4期1-6,共6页Journal of East China Jiaotong University

摘　　要：随着重载快速的实施,P60钢轨鱼鳞伤和剥离掉块更加突出,发展更加迅速.本文通过对津浦、沪宁、沪杭等繁忙干线上的钢轨鱼鳞伤和剥离掉块情况的现场调查,总结了钢轨鱼鳞伤及剥离掉块发生发展规律及主要基本特征,运用赫兹接触理论、轮轨磨擦学理论和轮轨耦合动力学理论,分析了钢轨鱼鳞伤和剥离掉块的成因,提出了减缓和整治钢轨鱼鳞伤和剥离掉块的措施.With the raising of train speed and the enhancing of railway traffic, the rail comer fine cracks and shelling defects will occur more frequently, and develop more rapidly. According to the large quantity of 60kg/m rail comer fine cracks and shelling defects data gotten by investigating the Tianjin-Pukou, Shanghai-Nanjing and Shanghai-Hangzhou heavy traffic main railway, the mainly basic characteristics and development rule of rail comer fine cracks and shelling defects are summarized, This paper＇s aim is to analyze the causes that induce rail comer fine cracks and shelling defect by the theory of Hertz contact , wheel/rail tribology and wheel/rail couple dynamics, some measures for defending , alleviating and maintaining the defects were put forward at the end of the paper.

关 键 词：铁路 轨道 钢轨鱼鳞伤和剥离掉块 轮轨作用力 预防减缓措施 

分 类 号：TM13[电气工程—电工理论与新技术]