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:

  1. Design bending moment in rail seat section Mdr = 21 kN.m
  2. Design negative bending moment in the middle section Mdcn =13 kN.m
  3. Static load – k1s = 1,5; k2s = 2,2
  4. Dynamic load – k1d = 1,5; k2d = 2,0
  5. Fatigue (if required) – k3 = 2,0