在既有线改造中应用人工一次性铺设无缝线路

Application of One-time Laying Continuously Welded Rail Manually in Innovation of Existing Railway Line

研究目的:既有线提速改造时形成小区间无缝线路,利用长轨机械铺设比较困难,以往利用轨排换铺法进行。该法对既有线运营产生严重干扰,造成列车运行晚点,并形成诸多不安全因素,迫切需要改进。研究方法:在不拨移既有线路的情况下进出轨料,减少封锁次数,利用人工一次性铺设跨区间无缝线路的方法取代轨排换铺法。研究结果:解决了既有线提速改造铺架与既有线运营的矛盾。研究结论:在既有线电气化改造施工中,使用这种人工铺轨代替轨排换铺,是一种利用短暂的运营间歇时间,保证运营安全与施工安全的有效方法。

Research purposes： In cause of innovation of existing railway line, sometimes it needs to lay continuously welded rail in minor section, but it is difficult to do it with long - railed machinery, so the method of replacing and laying track with track panel was adopted previously. However, the method needs to be improved urgently because it can cause serious interference on the traffic of the existing railway line, such as causing train delay and creating many unsafe elements. Research methods ： The track materials can be delivered inside and outside working site under condition of no lining and moving track and the number of blocking line can be reduced by adopting the method of one - time manually laying trans - section continuously welded rail instead of the method of replacing and laying track with track panel. Research results：The contradiction has been solved between laying track in cause of innovation of existing line and traffic of existing line. Research conclusions：The method of manually laying continuously welded rail, conducted in short operational interval, is an effective way for guaranteeing the traffic safety and construction safety in electrification innovation of existing line.