Research On Maintenan Techniques Of Double-block Ballastless Track System On High Speed Railway

China's high-speed railway ballastless track structure mainly CRTS? plate type,CRTS ? plate type,CRTS ? plate type,double block,plate turnout area and sleeper buried six forms structure.Our high-speed railway bi-block ballastless track,full of foreign ballastless track advanced technology,and experimental line carrier to optimize sound and constantly deepen the research base track structure on the experiments,the formation of high-speed railway ballastless track Architecture.Through trial production,small batch trial production and mass production of three formal stages of exploration and summary,the full realization of the manufacturing process of localization.At the same time,after a lot of testing,development,purchase and other scientific and technological activities and work,the basic realization of tooling equipment in China,and gradually form a complete manufacturing process and production organization's management system.Research on the railway ballastless track began in the 20 th century,the early1960 s,but it was due to external environmental conditions and impact of research leading to non-ballasted track structure slowly into the 1990 s,as China's passenger line,high-speed rail fast construction,demonstration and testing of domestic research institutes to start for high-speed rail ballastless track technology.As the world Ballastless advanced technology and engineering have come of age,and the introduction of German technology,the design of the Japanese ballastless track rail,manufacturing and construction,etc.,by absorption,digestion and re-innovation,and actively carry out research and experiment,so that our ballastless track technology has been developing rapidly.At present,the main form of ballastless track structure is divided into type and pre-cast concrete slab into two categories.Our vast and extremely complex geological conditions,large climatic differences between different regions,and ultimately makes the non-ballasted track structure in the form of high-speed rail construction in the application will be more.This article on concrete ballastless track structures on the technical characteristics to do a simple analysis,but mainly on the bi-block ballastless track structure in the structural design,the type of injury is,structural inspection and repair technology to do a detailed study.Double block ballastless track structure of the track bed of the main structure ofcast concrete road deck,is an important part of shop-fabricated double-block concrete sleepers.But in the roadbed,bridges and tunnels lots of track bed structure and composition of the drainage system are different.On the track circuit and integrated ground interface also has its own unique techniques.Double block ballastless track structure since the opening of the main injury is present in are: road deck cracks,sleepers and road deck away from the seam,bridge deck transition path away from the seam with the base and foundation deformation caused injury is the form of the track structure.High-speed rail inspection adhere to the "dynamic examination-based,dynamic and static checking combined structural inspection and checking the geometry of both" principle,the use of three criteria,establish a sound bi-block ballastless track repair,maintenance system.Double-block ballastless track because of its unique structure and characteristics of the formation of a different construction of track structure injury is the case.For example,under high temperature conditions in the bridge transitional section of the channel will appear bedplate arch phenomenon,the paper cited a large number of field this phenomenon will be described,and the use of Midas Civil software finite element model was established to analyze and make a remediation technology programs,and preventive approaches.For double-block ballastless track maintenance technology essentials,on the basis of Ballastless Track Subgrade deformation of maintenance in the maintenance program design,maintenance organization plan,transportation maintenance programs to make a detailed and feasible about dual-block ballastless track overhaul program design.On the Improvement of Ballastless Track Maintenance and technical guidance CRTS ? Slab Track Maintenance operations have very important significance.Ballastless track of high speed-railway track structure in our country overall divided into two major categories of cast-in-situ concrete type and prefabricated plate,ballastless track mainly include sleeper embedded,double block,bifurcation area plate,CRTS ? type,CRTS ? type,CRTS ? type and six kinds of structure forms.