Analysis on Design Scheme of CRTSIII Slab Track Structure on Roadbed

A longitudinal-transverse-vertical spatial coupled model was established.A comparative study was made of the mechanical characteristics of two design schemes,unit style and longitudinal continued style,under the action of temperature load,vehicle load,concrete shrinkage and foundation settlement deformation.Analysis results show that the unit style is recommended for the severe cold area due to the influence of temperature load and maintainability of track.