Development of track geometry inspection equipment for high-speed comprehensive inspection train in China  

作　　者：Yan Wang Shibin Wei Fei Yang Jiyou Fei Jianfeng Guo 

机构地区：[1]College of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian,China and Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing,China [2]Infrastructure Inspection Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing,China [3]College of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian,China [4]Department of Engineering Mechanics,KTH Royal Institute of Technology,Stockholm,Sweden

出　　处：《Railway Sciences》2024年第6期673-683,共11页铁道科学（英文）

基　　金：supported by the National Natural Science Foundation of China(Grant No.52278465);Science and Technology Research and Development Plan of China Railway(Grant No.N2022G051);Key Project of China Academy of Railway Sciences(Grant No.2351JJ2401).

摘　　要：Purpose–This study aims to analyze the development direction of track geometry inspection equipment for high-speed comprehensive inspection train in China.Design/methodology/approach–The development of track geometry inspection equipment for highspeed comprehensive inspection train in China in the past 20 years can be divided into 3 stages.Track geometry inspection equipment 1.0 is the stage of analog signal.At the stage 1.0,the first priority is to meet the China’s railways basic needs of pre-operation joint debugging,safety assessment and daily dynamic inspection,maintenance and repair after operation.Track geometry inspection equipment 2.0 is the stage of digital signal.At the stage 2.0,it is important to improve stability and reliability of track geometry inspection equipment by upgrading the hardware sensors and improving software architecture.Track geometry inspection equipment 3.0 is the stage of lightweight.At the stage 3.0,miniaturization,low power consumption,self-running and green economy are co-developing on demand.Findings–The ability of track geometry inspection equipment for high-speed comprehensive inspection train will be expanded.The dynamic inspection of track stiffness changes will be studied under loaded and unloaded conditions in response to the track local settlement,track plate detachment and cushion plate failure.The dynamic measurement method of rail surface slope and vertical curve radius will be proposed,to reveal the changes in railway profile parameters of high-speed railways and the relationship between railway profile,track irregularity and subsidence of subgrade and bridges.The 200 m cut-off wavelength of track regularity will be researched to adapt to the operating speed of 400 km/h.Originality/value–The research can provide new connotations and requirements of track geometry inspection equipment for high-speed comprehensive inspection train in the new railway stage.

关 键 词：Track geometry inspection equipment High-speed comprehensive inspection Potential tapping requirements and technological direction High-speed railway 

分 类 号：U21[交通运输工程—道路与铁道工程]