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在京广线电气化改建工程中,一些车站两端的渡线要改建成为交叉渡线。设计院按照交叉渡线是型图设计,施工部门按照设计图纸拆除既有渡线道岔,铺设新的交叉渡线合情合理。然而,在需要改建的车站上,其两端渡线上的既有道岔,与要铺设交叉渡线上的道岔通常是型号相同(均是1/12道岔、60kg/m钢轨),铺设时间不长,道岔状态良好,而且既有道岔的岔枕往往是钢筋混凝土岔枕,交叉渡线上的岔枕是木岔枕。从维修和运营方面考虑,钢筋混凝土岔枕比木岔枕道岔维修工作量小,行车稳定性好:从施工方面考虑,在京广线上更换一组道岔给封锁线路点90分钟。在封锁时间内要拆除一组钢筋混凝土岔枕和道岔,铺上一组新道岔,工作量太大。经过多方面比较,提出了利用既有渡线上的两组钢筋混凝土岔枕及道岔的想法。此方案既可为国家节约材料又可以省去旧道岔的拆除、
In the Beijing-Guangzhou line electrification project, some of the station at both ends of the ferry to be converted into a crossover. Design Institute in accordance with the crossover is the type map design, construction departments in accordance with the design drawings demolition of existing turnouts, laying new crossover reasonable. However, at the stations that need to be reconstructed, the existing turnouts on the crossover ends are usually of the same type as the turnouts on which crossover lines are to be laid (both 1/12 turnouts and 60kg / m rails), laying time is not Long, turnout in good condition, and the existing switch ties are often reinforced concrete switch sleepers, fork crossover crossover is the turnout pillow. In terms of maintenance and operation, reinforced concrete sleepers require less maintenance work than turnout sleepers, and have good driving stability. From the aspect of construction, a group of turnouts is to be replaced on the Beijing-Guangzhou line for 90 minutes to block the circuit points. In the blockade time to remove a set of reinforced concrete sleepers and switches, laying a new turnout, the workload is too large. After many comparisons, the author put forward the idea of using two sets of reinforced concrete sleepers and turnouts on existing ferries. This program can save the country for the material and save the demolition of the old turnout,