Reinforced concrete sleeper СТ 6
Purpose
Pre-stressed reinforce concrete sleepers СТ 6 are intended for standard rail tracks (track gauge of 1435 mm) using no tie plate elastic fastening W– 14 , with the following axle load:
for 160 km/h – axle load 250 kN
for 200 km/h – axle load 225 kN
Technical characteristics
1 | Manufacturer | „BULGARIAN CONCRETE ELEMENTS” LTD. |
2 | Type of product | Reinforced concrete pre-stressed sleeper 1435 mm , СT 6 |
3 | Purpose | For railway tracks 1435 mm |
4 | Measures | 2600/234/295.5 mm |
5 | Concrete | Grade of concrete not less than С45/55 in accordance with standard BS EN 206:2014. Volume 0,115 m3 |
6 | Type of steel | High-strength steel wire d 7 mm in accordance with standard pr.ЕN 10138-2 |
7 | Fastening | Elastic fastening system W 14 |
8 | Tilt of gauge spaces | 1:40 |
9 | Maximum axle load | 25.0 tons / axle |
Requirements for load-bearing capacity of sleepers.
Mechanical characteristics.
28 days following the production the sleeper must take static bending without opening cracks with moments and factors as follows:
- Design bending moment in rail seat section Mdr = 21 kN.m
- Design negative bending moment in the middle section Mdcn =13 kN.m
- Static load – k1s = 1,5; k2s = 2,2
- Dynamic load – k1d = 1,5; k2d = 2,0
- Fatigue (if required) – k3 = 2,0