结合国铁有碴道床无缝线路施工方法，对长轨直接铺设法和换铺法进行了介绍，重点阐述了长轨换铺法无缝线路施工重点环节的技术要点，为类似工程的施工积累了经验。%Combining with the construction methods of the ballast track bed along national railways,the paper introduces the direct laid method and replacement track-laying method of long rails,and mainly illustrates the technical points for the key steps of jointless tracks with the long-rail replacement track-laying method,so as to accumulate experience for similar projects.
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