Disease analysis and maintenance technology of CRTS III slab ballastless track

摘要

In this paper, the author studies on the design of disease analysis and maintenance technology of CRTS III slab ballastless track. The paper proposed the three level classifications of the effects of maintain of CRTS III ballastless track on the structure: influence of the track appearance, influence of the track local function and influence of track structure. Based on the CRTS III slab ballastless track structure on bridge, the analysis model is developed. The longitudinal force characteristics of CRTS III slab track are compared with the maintenance of anchorage. According to the anchorage effect on the expansion additional force characteristics of rail, slab and base plate on the bridge, the conclusion is that the maintenance of anchorage has little effect on the expansion force of the structure, it can be negligible. Based on the analysis of the CRTS III model, the conclusion is that the maintenance of anchorage has large effect on the expansion force of the structure. In order to prevent the anchorage of the slab and base plate, and to keep under symmetrical stress, it is suggested that at least 4 rebar at the same time it should be checked the stress-free temperature of rail.