Section structure and technical standard of track slab ballastless track tunnel

It consists of 60kg/m rail, elastic fastener, precast track slab, mortar adjustment layer and support layer.

The height of the track structure (from the top surface of the rail near the center line of the line to the bottom surface of the supporting layer) is 779 mm

1. Technical requirements for track slab, mortar adjustment layer and supporting layer of CRTSⅱ Ⅱ slab ballastless track in the same section.

2. The concrete structure in the track system shall meet the requirements of relevant durability specifications.

3. The curve superelevation is set on the support layer.

4. Tunnel section adopts intermediate drainage method.