Research On Maintenance Techniques Of CRTSâ…¢ Slab Ballastlcss Track System On High Speed Railway

The structures of ballastless track on high speed-railway overall divided into prefabricatedplate and cast-in-situ concrete in our country. It mainly include six kinds of structure forms,suchas CRTS Ⅰ type, CRTS Ⅱ type, CRTS Ⅲ type, double block and bifurcation area plate andsleeper embedded type.The CRTS Ⅲ slab ballastless track system on high-speed railway in our country is based onballastless track technology research and application experience of CRTS Ⅰslab ballastless trackand CRTS Ⅱslab ballastless track etc, and on the basis of summarizing and analyzing fordomestic and overseas high-speed railway ballastless track system technology developed a newhigh-speed railway，which has a completely independent intellectual property rights of theballastless track structural system. The structure of ballastless track is basically the same indifferent track foundation, which include roadbed, bridge and tunnel ect.It is compose of steell,fastener system, prefabricated slab, self-compacting concrete, isolation layer and the concretebase ect. Because the operational time is shorter to the CRTS Ⅲ slab ballastless track system onHigh Speed Railway in our country, the maintenance experience for the CRTS Ⅲ slabballastless track is relative lacking, combined with the actual operation condition of ballastlesstrack, and formed a more perfect for high-speed railway CRTS Ⅲ type ballastless trackstructure damage maintenance repair technology are focus on the research to the next step.This paper takes into a maintenance management of Chengdu Dujiangyan Railway CRTSⅢ type ballastless track as the basis,and reference a variety of ballastless track maintenancerequirements in the "high-speed railway ballastless track repair rules (Trial)". This paper havecarried on the reason analysis which may produce wound disease, from the structurecharacteristics, mechanical characteristics and construction technology of high speed railwayCRTS Ⅲ type ballastless track,proposed high-speed railway CRTS Ⅲ type ballastless trackmaintenance and repair advice and damage evaluation standard, and put forward some specificremediation program of ballastless track structure damage disease, to perfect our countryballastless track maintenance and repair technology and guidance of CRTS Ⅲ type maintenancerepair all have very important significance.