弹性分开式扣件线路精调施工技术研究

Research on Precise Adjustment Techniques on Line with Elastic Split Fastenings

研究目的:轨道精调是确保高速铁路高平顺性、高速运行、高稳定性的重要环节,本文结合多条高速铁路轨道精调施工实践,通过对CRTSⅠ型板式无砟轨道线路静态精调过程中各关键施工工艺研究,形成弹性分开式扣件线路静态精调施工技术。研究结论:通过对轨道精调工艺探索研究及工程实际验证,得出:(1)基于轨道调整量数据模拟分析原理,采用自主研发的数据模拟分析软件,为轨道精调提供实施依据,提高了精调工效;(2)提出的适应分开式扣件系统"先高低,后水平,先轨向,后轨距"精调作业顺序,减少了精调工作量;(3)提出的采用同一根钢轨作为高低与轨向基准轨的方法,避免了精调时对轨道的扰动,减少了反复调试,提高了精调工效和质量;(4)本研究结论适用于高速铁路、客运专线CRTSⅠ型板式无砟轨道采用弹性分开式扣件线路静态精调施工。

Research purposes： Precise adjustment is an important process to guarantee smooth, high speed and reliable operations on high speed railway lines. This paper focuses on the research of key processes in static precise adjustment of CRTS Ⅰ slab ballastless track in view of the engineering practices on several high speed lines to formulate engineering techniques for precise adjustment on line with elastic split fastenings. Research conclusions：The study of track precise adjustment processes and engineering practices have demonstrated： （ 1 ） The self - developed data simulation and analysis software on the principle of track adjustment data simulation and analysis serves to support track precise adjustment and improve work efficiency;（2） Such proposed working procedures in precise adjustment as ＂first track irregularity, then track level, first track alignment, then track guage＂ has reduced workload; （3） The proposal to use the same rail as the reference to adjust irregularities and alignment has protected the track from disturbance generated during precise adjustment, reduced repeated adjustments and improved its efficiency and quality; （4） The research conclusions are applicable to static precise adjustment on high speed lines and dedicated passenger lines with CRTS Ⅰ slab ballastless track and elastic split fastenings.