摘要
在技术分析和经济比较的基础上，提出钢轨在通过一定运量之后，经综合整修，可使用在次一级线路上；提出了钢轨的第一运营周期和确定第二次使用时的运量密度的方法；并分析了再用轨使用的经济效益问题。
In this paper on the basis of technical analysis and finacial comparison,it proposes that after passing through a definite amount of traffic, a rail by being integrative repaired can be reused on the subline.The author also presents the method to determine how long should be suitable for the first use and how to decide the traffic density for the second use.
