Research On High Speed Railway Track Maintenance

Taking Guangzhou railway Group co. for medium and long-term railway network construction planning guide, will China’s high-speed railway construction as the background, summarized the works of track maintenance status at home and abroad, points out that in Japan, Germany, France and China, etc. the approach and the present situation of high speed railway maintenance, and emphasizes the significance of research on high speed railway maintenance works.This paper takes Wuhan-Guangzhou high-speed, Guangzhou-Zhuhai intercity and Hainan east ring railway in the Guangzhou railway Group co. for example, discussing the works of high speed railway track maintenance, including three parts, ballastless track, ballast track and rail surface repair. After the shortcoming of existing maintenance way of comparative analysis, and as a new maintenance mode, focus is high-speed rail detection, dynamic analysis, the construction of a complete set of disposal (fine detection and adjustment) and quality tracking of specific methods, citing specific cases shows that disposition effect.This article emphasizes the difference between ballastless track and ballast track high speed railway maintenance, on the basis of the same maintenance program, focused on the use of the process, the principle, the program and the case, pointed out that the use of large railway machinery is the key to ballast high-speed rail service maintenance, new construction method is also different from the original way.Rail surface modification is one of the important content of the maintenance for ballastless track and ballast track high speed railway, through the rail surface data collection, analysis, and the rail grinding process test, fully discusses the circuit, the switch rail grinding way, method and technology status.Since the opening operation, High-speed railway will inevitably restricted by various relations conditions, natural environment, repair maintenance is imperative. The change of the high-speed railway works belong to the category of gray theory research, through the analysis of grey theory, simulation and prediction, it’s stable for Direction of the rail, level gauge, the triangle pit and TQI of high-speed rail, prove the existing of high speed railway maintenance to meet the requirements of the operation safety.