有砟轨道轨下垫板厚度自动化检测方法研究

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中图分类号：TP311 文献标志码：A 文章编号：2095-2945（2026）01-0017-07

Abstract：Tamping isacritical part of themaintenanceandoperationofbalastedtracks，andplanningrequires determiningthe thicknessoftheunder-railpadswithinthetampingsectionExistingmethodsformeasuringthethicknessofunder-railpadssuffer fromloweficiencyandpooobjectity.Thispaperproposesameasurementmethodbasedon3Dcameralinelasertechnologyto measuretethicknessofrailwayunderailpads.Byequippingatrackinspectiontroleywitha3Dcameraaninertialmeasureent unitandaleagepositiongsychoationnittheprofilearacteistsofteudeailpadsndsuoundingtracktructure componentscanbereconstructedinreal-time.Thethicknessoftheunder-railpadsisthencalculatedusinganimage-calibrationbasedcoordinatemapingmodel.Theresultsshowthatthestandarddeviationcoeficientofrepeatedmeasurementsremains stable within 2% ; at a 95% confidence level，thedeviation inrepeated measurements is less than O.25mm.Whencomparing the experimental resultswithmanualmeasurementsinthefield，theresidualsofthemeasuredunder-railpadthicknesseswereallwithin.5mm. This method effctively replaces existing detection techniques，improving both efficiency and accuracy.

Keywords：ballasted track；under-rail pad; linelaser;3Dpoint cloud;thicknessdetection

有砟轨道由于其建造成本低、易于维护等特点，是国内外轨道的主要结构形式之一。（剩余7245字）