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1 前言 我段所辖津浦线上下行k832～k984,是全路最繁忙的干线之一,共有正线曲线228条,累计延长约101km,占正线延长公里的三分之一。我段每年更换曲线侧磨轨的工作量很大,特别是重载快速列车开行以后,曲线钢轨侧磨速率明显加快,给曲线钢轨的养护带来很大的困难。因此,探讨曲线钢轨侧磨的成因,加强曲线养护,降低曲线侧磨速率,最大限度地延长曲线钢轨的使用寿命,降低生产成本,是摆在我们面前的一项紧迫任务。
1 Introduction The section of Jinpu Line under the jurisdiction of our section, k832 ~ k984, is one of the busiest arterials on the road with a total of 228 curves of the main line, extending a total of 101km in length, accounting for one third of the extension of the main line. My section of the curve side of the grinding track every year to replace the heavy workload, especially after the commencement of heavy-haul fast trains, the curve rail side milling speed significantly accelerated, to the maintenance of the curve rail has brought great difficulties. Therefore, it is an urgent task for us to discuss the causes of curved rail side grinding, strengthen the curve maintenance, reduce the curve side grinding rate, maximize the service life of curved rail and reduce the production cost.