Study On Maintenance And Repair Of Life Cycle Of Ballastless Track Structure For High-speed Railway

In recent years,the rapid construction of high-speed railway is speeding up the pace of China into the world of high-speed railway,high-speed railway with a large carrying capacity,low transport costs,fast running,smoothness and comfortable,less maintenance and many other advantages,it is not only to save time for the passengers,but also bring the development of along city,easeing the dilemma of China's urban busy transportion.However,in the course of using all engineering structure,Structural performance is decreaseing and diseaseing gradually,over time.in order to ensure the most basic of the use of structural performance,it is necessary to invest in the funds of construction for maintenance work to improve the performance of the project structure.It is maybe more secure in the useing of project structure.In recent years,due to the short running time,the lack of relevant maintenance technology,there have been many forms of injury in the running of High-speed railway ballastless track,such as rail wear,fastener corrosion,disterss in track plate,disterss in cement emulsified asphalt Mortar and other injuries.In this paper,the design of the plate ballastless track structure is used to study the calculation index system of the track structure in the life cycle,and the maintenance and repair measures of the specific structure and components.According to the comprehensive study of the structural damage from the CRTS ? slab ballastless track,Maintenance measures,service life to determine a scientific and reasonable life-long maintenance system.The main research of the CRTS? slab ballastless track structure,the life cycle cost calculation index system of the ballastless track structure is expounded in detail,and the concrete maintenance measures of the components of the ballastless track structure are discussed with reference to the corresponding maintenance methods and maintenance rules.Take the structure or component damage as a starting point,the study of the relationship between injury and performance,establishing the connectionn of the maintenance measures-performance indicators-service life.Site investigation and get the relevant data of the damage of the CRTS? slab ballastless track fron the 200 meter unit interval in the bridge section and maintenance,calculate the maintenance costs,and finally analyze the performance indicators in the change of pre-maintenance and postmaintenance of the structure or components,such as track quality index.The research results include the following: The design of the whole life cycle of the ballastless track structure is an irresistible trend,ang it maybe used as the theoretical basis.The cost calculation method is expounded in detail in the whole life cycle.It is comprehensive summarise the performance indicators of components,damage classification,maintenance measures;according to the track structure or component performance to build the components of the performance indicators,and drawwing measures-performance-life curve;to carry out a simple case analysis.in order to achieve China's high-speed railway ballastless track structure of the rapid development of saving life cycle cost is of great significance.