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无缝线路由于减少了钢轨接头,减轻了列车荷载对轨道的振动,从而大幅度降低了轨道维修量;也降低了从接头处产生的钢轨和车轮的噪音。正因为如此,全面铺设无缝线路成为世界铁路经营上的重要趋势。从目前世界范围看,欧洲各国的无缝线路铺设比例较高,特别是联邦德国(几乎100％)和法国。从日本铁路既有线的无缝线路看,由于每段无缝线路的轨节长度较短,长钢轨和长钢轨的连接要用伸缩接头。这样,伸缩接头的数量增加,就提高了无缝线路的铺设及管理成本。
The seamless track reduces the amount of track maintenance due to the reduced rail joints, alleviates train track vibrations, and reduces rail and wheel noise from the joints. Because of this, the full laying of seamless lines has become an important trend in the operation of the world’s railways. From the current world perspective, the European countries have a high percentage of CWR installations, especially in the Federal Republic of Germany (almost 100%) and France. From the seamless lines of the existing railroads in Japan, the length of each section of the seamless track is short, and the long rail and the long rail are connected by expansion joints. In this way, the increase in the number of expansion joints, it will increase the laying of seamless lines and management costs.