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Figure 12 Failure of sleeper no. 2 in shear.
Load [kN]
120
100
80
60
40
20
0
0 10 20 30 40 50
Deflection [mm]
- 12 -
Sleeper Class Fmax Mf,mid Failure type
no. [kN] [kNm]
2 red 65 19.5 shear
4 green 109 32.7 wire fracture
5 green 106 31.8 wire fracture
6 red 64 19.2 wire slip
Figure 13 Results from the tests of the bending capacity of the midsection for the
tested sleepers.
Bending capacity of rail section
The sleepers were placed on two bearings at a distance of 300mm on each side of the
symmetry line of the rail section.
Each bearing consisted of a steel cylinder (diameter 60mm) and two steel plates
(thickness 100mm). Between the bearings and the sleeper a rubber pad was mounted.
In the middle of the rail section a steel plate, thickness 15 mm and the width 50 mm,
was placed with a rubber pad between the concrete and the steel. The test was run in
displacement control and the load was applied via a hinged edge with a rate of 0.02
mm/s. The sleepers were loaded until failure.