Analysis And Forecast Of The Beijing Kowloon Line Bozhou To Fu Bei Section Of Track Quality Index (TQI)

By studying the law of development of track irregularities and trends, trackirregularity forecast, to guide the maintenance, which can effectively improvemaintenance efficiency and work quality, line equipment repair cycle and to extendthe service life. This paper by Bozhou to the Fubei section of Jing-JIU railwaytrack irregularity of quality index (TQI) characteristics and prediction modeland analysis study of effect of large track maintenance machinery operation, tothe sector forecast the developing trend of the TQI, track maintenancerecommendations were made.Using the Jing-jiu Railway track inspection car data, TQI line equipmentfeatures and maintenance cycle characteristics are analyzed, and set up a forecastmodel were validated and applied. First on rail seized car data for haspretreatment, for effective carried out forecast model research lay good of based;then through on different line equipment TQI features and maintenance cycle withinof TQI features for analysis, showed that the lots track quality index TQI ofdevelopment changes has cyclical, and staged and the linear features, and usedlinear forecast model, on TQI for has forecast, the section line lots in big machinepound solid job2years later its TQI is expected to will reached8mm. TQI throughmaintenance cycle and study on partial changes, different maintenance projectson the TQI influence and its sub-items would create different formation ofdifferent variations and other, make maintenance recommendations.Also large track maintenance machinery operation project on the TQI of trackquality index study influence and its sub-items. After changing track overhaul,alignment and gauge73%the whole excess, on-site renovation work to the main road,traffic diversion; tamping effect associated with large operations, large tampingafter repair, due to the flexibility improved ballast, appear vertical trackirregularity overrun values significantly decreased. Big machine sandingoperations on track irregularity had no significant effect. Precision methods forautomatic shunping road, under the method mode of track lining, large machinesbefore and after tamping different TQI and its sub-items, tamping the track gaugeof which has no influence, has little effect on alignment, high and low, warp,level within certain ranges of values may be linear, exponential or linear relationship.