Research On The Adjustment Of The High-Speed Railway Non-Ballasted Track

The most notable feature of high-speed railway non-ballasted track is the better smoothness. It necessary to check the smoothness occasionally for the newly-built or operational high-speed railway non-ballasted track. If the smoothness of high-speed railway does not meet specification requirements, the track needs to be adjusted to meet the needs of safe driving. At present, the adjustment for railway fasteners of high-speed railway non-ballasted track is calculated one by one, which restricts the development of high-speed railway in our country. Therefore, how fast automatic calculate the adjustment of non-ballasted track is an urgent to be solved problem. Above all, the main research contents of this thesis are as follows:Firstly, evaluating the smoothness of high-speed railway non-ballasted track. According to the discrete actual measurement coordinates of non-ballasted track, we could calculate normal offset in plane and vertical section of track, and proving that normal offset could replace the difference of vector distance. According to the amount of the normal direction offset to calculate the smoothness value of track, and evaluating that if smoothness of track meets regulatory requirements.Secondly, calculating the adjustment of the non-ballasted track baseline track automatically. After evaluating the smoothness of non-ballasted track, and adjust the defective sections. According to the principle of adjustment of non-ballasted track, calculate the adjustment of non-ballasted track baseline track. According to the original track offset of non-ballasted track baseline track to automatic calculate the adjustment of the plane and vertical track with the method of polynomial fitting iteration.Thirdly, automatic calculating the adjustment of the non-ballasted track non-reference track. After calculating the adjustment of the baseline track, according to the size of the track gauge and horizontal (ultrahigh) offset to automatic calculate the adjustment of the non-reference track.On top of that, according to the contents of the study and considering the requirements of adjustment working for existing non-ballasted track, it developed the data post-processing software of high-speed railway non-ballasted track(RTAS) which can automatic calculate the adjustment of the non-ballasted track.