Rail Track Isolation Systems - Trelleborg.com.au

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Ballast MatBallast mats are designed to reduceground-borne vibrations, thedegradation of ballast stones and thedamaging effect of impact forces onsupport structures. They are easilyinstalled on rigid support surfacesunder the ballast, such as concretetunnel floors or bridge decks.Fabric-reinforced Natural Rubberis the ideal combination to provideconsistent long-term performance.The Natural Rubber provides superiormechanical and dynamic properties.Flexible fabric reinforcement ensurestrack loads are distributed uniformlyand prevents penetration of ballaststones.Our ballast mats are typically supplied in rollsthat can be simply handled with a forklift.Sections of the rolls are field cut to suit theparticular application. Joints are coveredby an inherent flap extending from the topsurface on one side of the mat, therebyensuring the covering of joints is a simpleand efficient process.Low Vibration Track (LVT) Boots and PadsTrelleborg Queensland Rubber is a licenced supplierof Low Vibration Track (LVT) Boots and Pads. LVT isa non-ballasted track system comprising independentrail supports encased in a second pour concrete.The rubber boot isolates the rail support from thesurrounding structure and the micro-cellular pad isdesigned with a certain spring rate to provideeffective attenuation of the vibrations.LVT provides a number of advantages includingaccurate track geometry, exceptional lateral resistanceand a proven record of long term maintenance freeoperation.
Floating Slab Track (FST) BearingsFloating Slab Tracks (FST’s) are a proven mass-springsystem for achieving very high levels of vibrationisolation. The degree of isolation achieved on ourmost recent installations is far superior to almost allother available systems of track form. In particular,FST bearings are suitable for reducing low frequencyground borne vibrations.We have recently supplied FST bearings for theextensive Hong Kong rail system, including :-• KCRC West Rail• KCRC East Rail Extensions• MTRC Lantau and Airport Railway Phase 2Our FST bearings are manufactured using a specialdual compound design to ensure consistent long-termperformance. The bearings are principally NaturalRubber to provide excellent mechanical properties,extended durability, low creep rates and low dynamicto-staticstiffness ratios. In regards to their provenrecord of long-term durability, some elastomericbearings in bridge support applications have beenoperational for in excess of 100 years.We supply custom designed bearings to supportvertical, lateral and longitudinal loads applied to eachspecific Floating Slab Track unit. The bearings can bedesigned to support pre-cast and in-situ slab systems.In addition to extensive development trials andrepeated cyclic tests on prototype samples, thebearings are comprehensively tested duringmanufacture to ensure consistent compliance with thespecified performance requirements.
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