Optimisation of Turnouts
with Elastic Bearings

Reduced impacts and vibrations

Less wear of ballast andturnout components

Decreased maintenance costs

Solutions for ballast protection

3

1 Damage to rails and the frog
2 Short pitch corrugation
3 Transfer of vibrations toadjacent buildings
4 Tilting of the turnout
5 Ballast wear

1
2T

he inhomogenous load distribution of passing trains causes high dynamic forces in turnouts.
As a result, numerous factors increase maintenance costs: The ballast is subjected to heavy loads
and wear. This produces cavities
beneath the sleepers and the entire turnout can tilt. Additionally, damages to other components
such as the frog and rails occur.
Inhomogeneous load distribution in
the turnout causes ballast wear and“white spots”.

2High dynamic forces frequently leadto broken rails.

Solutions for vibration isolation

45W

hen trains pass through, vibrations and noise are transferredto the surrounding area – both inslab track and ballasted track. Moreover, the vibrations affect the entire
superstructure.

Damage to rails and the turnout frog

Reduced quality of life without
vibration isolation

3

Solutions for ballast protection
2×

service lifeof ballast

Under Ballast Mats
Optimum ballast bedding and loadtransfer. Effective vibration protection.

Under Sleeper Pads
Increased track quality, longer ballast
service life and fast installation.

Advantages of the solutions— Higher availability and longer
service life of the railway line
— Less wear to turnout components
such as frog or rails— Longer ballast service life
— Reduced maintenance costs— Lower life cycle costs

Rail Pads
Improved load distribution for reducedwear to the superstructure.
High mechanical load capacity.

Baseplate Pads
Reduced vibrations and improved load
distribution in the case of slab track
systems.

Less wearT

he introduction of definedelasticity with Sylomer® andSylodyn® evens out asymmetricalloads in the area of the turnout. This
reduces wear and maintenance costs
significantly. Tamping intervals can beextended by at least 100 %.

Protects the frog and prevents
short pitch corrugation.

No cavity formation, no tilting of the turnout. Even deflection due to a larger contact
surface and improved load distribution.

Optimised turnout with UnderSleeper Pads
4Cavities beneath thesleepers and destroyedballast.

Turnout without elastic bearing

China | CRC China Railway Corporation
Rail Pads— Higher availability of heavy haul tracks— Longer service life of rails— Lower life cycle costs

Austria | ÖBB
Under Sleeper Pads
— Reduced ballast wear
— More homogenous load distribution— Longer service life of the turnout

References (extract)
Solutions for ballast protection— DB, DE, since 2004
— ÖBB, AT, since 2005
— ADIF, ES, since 2008
— SNCF, FR, since 2011
— RFI, IT, since 2014
— Trafikverket, SE, since 2015

The perfect mix of materials selected with the Finite Element MethodUsing the Finite Element Method,the effects of a train passing overa turnout are simulated precisely, taking into account all geometric boundary
conditions. This results in an optimum
mix of various elastic elements such as
different types of Under Sleeper Pads.

Getzner simulation tool for the turnout

5Solutions for vibration isolation> 2000
optimised
turnouts
worldwide

Mass-Spring Systems (full surface,strip- or point-bearing)Highly effective vibration protection
and greater elasticity for thesuperstructure.

Under Ballast Mats
Optimum ballast bedding and loadtransfer. Effective vibration protection.

Insertion Pads for Sleeper Boots
Reduced structure-borne noise,emission particularly in tunnels.

Advantages of the solutions— Better living conditions and acceptance amongpeople living near railway lines— Greater flexibility in track/ installation planning— Higher availability of the railway line
— Less wear to the superstructure— Greater comfort for passengers— Vibrations reduced by up to 95 %Baseplate Pads
Reduced vibrations and improved loaddistribution in the case of slab tracksystems.

More elasticity for greater comfort

F

lexible solutions from Getzner provide targeted elasticity and reduced changes in stiffness – for turnouts in both slab tracks and ballasted
superstructures. Railway lines thereby
create less vibration and noise.

Turnout mounted on a Mass-Spring System

6Brazil | Salvador de Bahia, Line 1
Insertion Pads for Sleeper Boots and Mass-Spring System— Maintenance-free Sylodyn® bearings— Effective protection against vibrations and structureborne noise— Better living and working conditions for residents

China | Zhangjiawan Depot, Metro Beijing, Line 7
Under Ballast Mats
— Increased elasticity— Vibration protection for noise-sensitive buildings— Increased track quality

References (extract)
Solutions for vibration isolation— London Underground, GB, 2011— ÖBB, entrance to Brenner Base Tunnel, AT, 2012
— Metro Sao Paulo, BR, 2013
— Metro Madrid, ES, 2014
— SBB, Gotthard Base Tunnel, CH, 2016
— Metro Istanbul, TR, 2018

Precise simulation for reduced changes in stiffnessT

he optimum elasticity determined using the Finite Element
Method reduces the changes in stiffness caused by the turnout geometry. The smooth passage of the train
minimises vibrations and protects thesuperstructure.

Getzner simulation tool for the turnout

7

Large scale test rig

Installation of under ballast matsDeveloped, tested and installed by experts
50
Products from Getzner are continually subjected to strict quality testing, even during the production
process. Their reliability is rigorously tested, not only on the large scale test rig in-house, but alsofrequently by independent external institutes such as the Technical University of Munich (Chair andInstitute of Road, Railway and Airfield Construction).

50 YEARS OF
EXPERIENCE

Comprehensive range of services
An excellent product can only reach its full potential when it is used correctly. Experts from Getzner
support customers all the way from precise deflection calculations through the optimum material
choice, to installation supervision and approval on site.

CERTIFIEDSOLUTIONS

Find more information on
turnouts at
www.getzner.com/turnouts
WORLDWIDEPROJECTS

AUSTRIA — Bürs GERMANY — Berlin — Munich — Stuttgart FRANCE — Paris — Lyon JAPAN — Tokyo
INDIA — Pune CHINA — Beijing USA — Charlotte AUSTRALIA — Melbourne
www.getzner.com

B Turnouts en © Copyright by Getzner Werkstoffe GmbH | 06-2023

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