Vossloh Fastening Systems
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Vossloh Fastening Systems
Trends in Rail Fastening Systems
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Vossloh Fastening Systems
Requirements for Rail Fastening Systems
Project requirement Reliability
Low Maintainability
Damping
High toe load/
creep resistance => Safety
Simple handling
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Vossloh Fastening Systems
Fastening System 300
for Urban Transport, High Speed Lines
and Heavy axle load application since
more than 20 years on more than 4.000 km
Fastening System W
W series systems are installed worldwide since
more than 45 years on more than 86.000 km
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Vossloh Fastening Systems
Requirements
Customer Request
► Higher availability of track
► Reduction of maintenance
► Increasing of speed
► More driving comfort
► Noise and vibration reduction
► Cost
Achieved by higher elasticity in the fastening system, thereby
► Protection of substructure
► Protection of superstructure
► Protection of rolling stock
► Damping of vibration and shock loads
► Reduction of rail seat forces
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Vossloh Fastening Systems
Elastic Fastening Systems
To be considered
► Rail bending
► Life time of elastomeric pads
► Reduction of rail seat forces
► Limiting of rail tilting
► Abrasion/wearing of rail pads
in particular in tight curves and while using small rail foot
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Vossloh Fastening Systems
Elastic Fastening Systems
Control of Rail Tilting/ Increasing of Life Time
To be considered in the design of elastic fastening systems
►Tilting limiting design of guide plate with plastic nose ► rail pad with reinforced borders
reaching under the rail foot reduces wearing and decreases rail tilting
plastic deforming of elastic rail pads at high rail tilting
or vertical deflection ► high quality material
e.g. microcellular EPDM
► Control of rail tilting
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Vossloh Fastening Systems
Elastic Fastening Systems
Control of Rail Tilting/ Increasing of Life Time
To be considered in the material choice of elastic fastening systems
Material quality of elastic elements
► low stiffening factor
► high damping effect
► long life time
► equal elasticity via a wide range of temperature
► oil, grease and water resistance
Microcellular EPDM
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Vossloh Fastening Systems
Development of Fastening Systems
Fastening System Elastic Fatigue Limit Rail Pad Static Elasticity
W Type
System W 3 Skl 3 1,4 mm Wood or EVA stiff
System W 14 Skl 14 2,0 mm Elastic > 50 kN/mm
System W 30 Skl 30 2,2 mm Elastic > 50 kN/mm
System W 21 Skl 21 2,5 mm High Elastic > 30 kN/mm
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Vossloh Fastening Systems
Development of Fastening Systems
Fastening System Elastic Fatigue Limit Rail Pad Static Elasticity
Ribbed Plate Type
System K Clamping Plate stiff Wood or EVA stiff
System KS Skl 3/ AEKP/ 12 1,4 mm Elastic > 200 kN/mm
System KS 24 Skl 24 2,5 mm Elastic > 40 kN/mm
Skl 12 Skl 3 Skl 24
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Vossloh Fastening Systems
Development of Fastening Systems
Rail Fastening System 304
► Stable gauge and height adjustment
► Tilting protection of the rail through the
middle bend of the tension clamp and a
special design of the angled guide plate
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Vossloh Fastening Systems
Development of Fastening Systems
Rail Fastening System 304 Rail Fastening System 300-1
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Vossloh Fastening Systems
Fastening System W in Turnouts
► Similar Fastening System for Turnouts
► Direct Fastening System without
Baseplate
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Vossloh Fastening Systems
System W/ Polyvalent
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Vossloh Fastening Systems
System W/ Dual Gauge
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Vossloh Fastening Systems
Installation – VosMat System Rapid
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Vossloh Fastening Systems
Requirements Rail Fastening Systems
Project requirement High axle load
Extreme Track Alignment
Severe Environmental
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Vossloh Fastening Systems
Heavy Haul Fastening Systems
► In several countries the importance of freight traffic, with axle loads up to 35 to and more, increases
the availability and reduction of maintenance is as important as for passenger traffic
Captive systems are required:
► High toe load
► Reduction of wear
► Load transmission
► Abresive rail pad material
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Vossloh Fastening Systems
Heavy Haul Fastening Systems
► Same fastening type to be used
in the complete line as well as in the turn-out
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Vossloh Fastening Systems
Challenge of Increasing of Axle Loads
The requirements of known standard are related to concrete sleepers for an axle load of 35 to.
For higher axle loads as required for e.g. mine tracks no test requirements existing
Parameter EN 13481-8 AREMA- Test Severe Service Load Standard AU
Test (AREMA)
Maximum Loading 108 133.5 163.0 110.9
PV/cos (α) in kN
L/V 0.36 0.52 0.53
α0 40 20° 27.5° 27.9°
Loading Position 75 0 0 15
Rail X
>> Problematic: missing test conditions for higher axle loads
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Vossloh Fastening Systems
Challenge of Increasing of Axle Loads
>> Problematic of missing test conditions
EN 13481 Category E: Australian Standard: New Standard 42to:
• Q = 300kN (covers 350kN) • Q = 350kN
•60E1: IV= 30.550*106 mm4 • AS68: IV= 38.870*106 mm4
• 60E1: IL= 5.126*106 mm4 • AS68: IL= 5.870*106 mm4 -110.9kN 40°
• Min. Curve Radius 200m • Min. Curve Radius 400m
• Max. Speed 80 km/h + 0.6*FSKL
108kN
X
AS68: 185.7 mm
Rail height
60E1: 172.0 mm
59.2 mm
46.7 mm
Y
Vertical Load
Lateral Load
Rail foot
60E1: 150.0 mm AS68: 152.4 mm
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Project E: Figure of combined extrapolations/ scaling (Worst case)
Vossloh Fastening Systems
Challenge of Severe Track Alignment
Nebraska
Severe Track Alignment
Radius ~ 200 m
Train Length ~ 2.2 km
200m
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Vossloh Fastening Systems
Challenge of Severe Track Alignment
High vertical and lateral rail deflection in sharp curves (R = 200 m)
in Heavy Haul tracks and using of breaking sand
► Wearing of angled guide plate
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Vossloh Fastening Systems
Challenge of Severe Track Alignment
► Higher fatigue strength of the complete system
Sleeper screw against lateral and vertical rail deformation / movement
with washer
► Toe load up to 14 kN
► Vertical fatigue strength >2.8mm
Tension clamp ► Lateral fatigue strength +/- 1.0mm
Angled guide plate
► Abrasion resistance
Rail pad ► Guide plate with long guiding/ support surface of rail
► Tilting limitation within the system
Plastic dowel
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Vossloh Fastening Systems
Challenge of Severe Environmental Conditions
Track Installation and operation in desert environmental
Saudi Arabia
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Vossloh Fastening Systems
Challenge of Severe Environmental Conditions
Investigation of assembling of fastening systems covered with sand:
Fastening System covered with sand Greased screws covered with sand
Mounting of the Fastening System Tightening the screw
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Vossloh Fastening Systems
Challenge of Severe Environmental Conditions
Testing of the fastening system according to DIN EN 13481-2
with influence of temperature and sand
Repeated load test with sand and
increased temperature of 50° C
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