西成高铁陕西段轨道精调综述

Summary of Track Precision Adjustment in Xi'an-Chengdu High Speed Railway

我国高速铁路建设规模达到2万km以上,轨道精调的手段和方法也日趋完善。静态验收时,轨道的静态平顺性与以往开通的客运专线相比,逐年有较大幅度的提高。由于双块式无砟轨道的工法和轨道精调手段已经相当成熟,为避免重复,以西成高铁陕西段XCZQ-6标段为例,对框架单元浇筑控制、静态精调、动态精调过程中轨道平顺性的变化及轨道扣件更换率、测量手段、"FAKOP线型"高速道岔特点、部分已开通运营客运专线的比较等重点内容进行综合评述,并对发现的问题提出解决方案或建议。

With the construction of high-speed railway in China reaching more than 20 000 km, themeans and methods of track fine-tuning are becoming more and more perfect. In static acceptance, thestatic riding comfort has been greatly improved year by year compared with the dedicated passenger linesalready in service. Because the double block ballastless track construction method and track precisionadjustment are quite mature, to avoid duplication, this paper takes the XCZQ-6 contract section on Xi＇an to Chengdu High Speed Railway as an example to review comprehensively the frame element concretingcontrol, changes of track irregularity and track fastener replacement rate in the static and dynamicadjustment processes, the measuring means and high speed turnouts of “FAKOP” structure, and thecomparison of partially operated dedicated passenger lines. Solutions and suggestions for the problems areproposed.