Application of polyurethane geocomposites to help maintain track geometry for high-speed ballasted railway tracks

There are many issues surrounding the performance of critical assets on high-speed ballasted railway lines.At assets like switch crossings and bridge transitions high track forces can be produced resulting in higher ballast settlements and hence track misalignments.The latter result in higher track...

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Bibliographic Details
Published inJournal of Zhejiang University. A. Science Vol. 13; no. 11; pp. 836 - 849
Main Authors Woodward, Peter Keith, El Kacimi, Abdellah, Laghrouche, Omar, Medero, Gabriela, Banimahd, Meysam
Format Journal Article
LanguageEnglish
Published Heidelberg SP Zhejiang University Press 01.11.2012
Subjects
Ballast
Bridges (structures)
Civil Engineering
Classical and Continuum Physics
Engineering
High speed
Industrial Chemistry/Chemical Engineering
Mechanical Engineering
Overseas
Polyurethane resins
Railroad tracks
Railway tracks
Settlements
High-speed
Railways
U214.9
9
Modelling
Polyurethanes
Geocomposites
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Summary:There are many issues surrounding the performance of critical assets on high-speed ballasted railway lines.At assets like switch crossings and bridge transitions high track forces can be produced resulting in higher ballast settlements and hence track misalignments.The latter result in higher track forces and hence more settlement,leading to the need for increased track maintenance to ensure comfort and safety.Current technologies for solving issues like ballast movement under high-speed loading regimes are limited.However,a technique that has been well used across the UK and now increasingly overseas to stabilise and reinforce ballasted railway tracks is the application of in-situ polyurethane polymers,termed XiTRACK.This paper discusses how this technique can be used to solve these types of long-standing issues and presents actual polymer application profiles at two typical critical sites,namely a junction and a transition onto concrete slab-track.
Bibliography:Railways; Polyurethanes; Geocomposites; Modelling; High-speed
Peter Keith WOODWARD,Abdellah EL KACIMI,Omar LAGHROUCHE,Gabriela MEDERO,Meysam BANIMAHD（Institute for Infrastructure and Environment,School of the Built Environment,Heriot-Watt University,Edinburgh,EH14 4AS,UK）
33-1236/O4
There are many issues surrounding the performance of critical assets on high-speed ballasted railway lines.At assets like switch crossings and bridge transitions high track forces can be produced resulting in higher ballast settlements and hence track misalignments.The latter result in higher track forces and hence more settlement,leading to the need for increased track maintenance to ensure comfort and safety.Current technologies for solving issues like ballast movement under high-speed loading regimes are limited.However,a technique that has been well used across the UK and now increasingly overseas to stabilise and reinforce ballasted railway tracks is the application of in-situ polyurethane polymers,termed XiTRACK.This paper discusses how this technique can be used to solve these types of long-standing issues and presents actual polymer application profiles at two typical critical sites,namely a junction and a transition onto concrete slab-track.
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1673-565X
1862-1775
DOI:10.1631/jzus.A12ISGT3