Bolt Hole Adapter Of Ballastless Track Plate Precision Evaluation Based On Research

For high-speed railway track comfort, stability, the demand is higher, because of the very limited amount of rail fastener adjustment, therefore track smooth ride comfort is subject to track plate, restricting the track plate comfort factor contains the track board fine tuning,grouting and concrete pouring. Plate without a frantic jumble orbit or double block without a frantic jumble track, track plate grouting or concrete pouring the desired strength should be timely to track board survey, so as to find problems in a timely manner, to reduce the risk. The plate without a frantic jumble orbit of retest still adopts frame + surveying method, steps and trival; Double block a frantic jumble rail track tools after concrete setting is on, track plate repetition measurement can not be implemented.This paper research the plate without a frantic jumble track and double block without a frantic jumble rail track plate fine adjustment evaluation of the status quo, is proposed based on self-centering bolt hole adapter without a frantic jumble of the track board fine adjustment evaluation methods; High-speed rail fastener type is studied; According to the two lateral but orbit embedded casing calculate the coordinates of the bolt hole adapter support rail station line around the center coordinates, at the top of the rail center coordinates, left and right sides of rail top elevation, gauge and ultra high calculation formula; Studied according to the support rail station around the center coordinates, the rail top elevation and design flat vertical curve to calculate the position corresponding to the center line of mileage, lateral deviation and around rail height deviation; Design the PDA field acquisition system framework; The development of PDA data acquisition software.Unballasted track accurate adjustment of self centering bolt hole adapter based on the assessment method by total station measuring prism self centering bolt hole adapter installed buried sleeve two in the lateral track on the pre,a set of system accuracy assessment laying track plate, not only to find the problem in time, reduce the risk, but also has guide meaning,the gasket purchase cost savings.