Technology and Application of Turnout Status Evaluation and Treatment Based on Track Inspection Big Data for Beijing-Shanghai HSR
A total of 266 main line turnouts were laid on Beijing-Shanghai HSR.With the extension of service life,the structural health of these turnouts gradually deteriorates,for which systematic evaluation and special treatment are urgently needed to improve the service status of turnouts and ensure safety and stability of train operation.With the CN turnouts on the main line of Beijing-Shanghai HSR as the subject,this paper proposed a technology of status evaluation and treatment for the turnouts based on track inspection big data for Beijing-Shanghai HSR.In accordance with the track dynamic inspection data collected by high speed comprehensive inspection trains,the track geometry was intelligently analyzed and evaluated with the aid of big data technology.With the TQI-T index as an important reference basis,a turnout treatment plan was scientifically formulated,dynamic and static track geometry data were integrated,and the work related to special treatment of the geometric alignment of turnouts was carried out based on the two-step fine adjustment method for the dynamic and static aspects of turnout areas.Test sections were selected for trial and comparative analysis,the average TQI-T index of all the main line turnouts in the trial section was reduced from 4.9 mm to 4.5 mm,and that of turnouts subject to treatment was reduced from 5.2 mm to 4.2 mm.The train passing stability in turnout areas was effectively improved after the treatment,proving that the proposed method can effectively improve the geometric smoothness and train passing stability in turnout areas.
NETL
NSTL
万方数据
