一、概述在铁路轨道的维修养护中,接头养护工作量很大,如果维修不当或不及时,还会加速接头病害的出现。通过多年来的维修养护实践,充分说明钢轨接头是轨道结构中的薄弱环节,尤其是43公斤/米钢轨更为突出。我段管辖线171公里,其中43公斤/米轨167.5公里,大部分钢筋混凝土枕木,每公里配置1600～1760根。16.75公里钢轨中,使用20年以上,通过货运总重3.2～4.2亿吨公里的钢轨162.8公里,占97.2 First, an overview In the maintenance of railroad track maintenance, joint maintenance workload is very large, if not properly repaired or not, but also accelerate the emergence of joint disease. Through many years of maintenance and conservation practices, it is fully demonstrated that the rail joints are the weak links in the track structure, especially the 43 kg / m rail. I section 171 kilometers of jurisdiction, of which 43 kg / m rail 167.5 km, most of the reinforced concrete sleepers, 1600 to 1760 per km configuration. 16.75 kilometers of rails, the use of more than 20 years, through the cargo total weight of 3.2 to 4.2 billion tons km of rail 162.8 km, accounting for 97.2