有砟轨道无缝线路长钢轨施工技术探讨

Research on Construction of Continuously Welded Rail for Ballasted Tracks

轨道工程作为高速铁路的重要组成部分,其高平顺性和高稳定性是保证开通时达到设计速度,稳定后保证安全平稳运营的关键。有砟高速铁路只有一次敷设跨区间无缝线路,才能保证轨道具有良好的平顺性和稳定性。结合国内外工程实践,总结了有砟轨道一次敷设无缝线路长钢轨的施工技术,对散枕敷设法、长轨排敷设法、换铺法分别进行了介绍。

As an important part of high-speed railway,the high smoothness and stability of track works is the key to ensure reaching the design speed and safe and smooth operation.To guarantee both smoothness and stability of tracks,as for ballasted high-speed railway,wielded rail has to be laid for one time.Considering both domestic and projects abroad,a summery is made on techniques of laying welded line long rails on ballasted tracks.Besides,the paper respectively introduces distribute sleeper laid method,assembly long track frame laid method as well as replace short rail laid method.