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

作     者：Peter Keith WOODWARD Abdellah EL KACIMI Omar LAGHROUCHE Gabriela MEDERO Meysam BANIMAHD 

作者机构：Institute for Infrastructure and EnvironmentSchool of the Built EnvironmentHeriot-Watt UniversityEdinburghEH14 4ASUK 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2012年第13卷第11期

页      面：836-849页

核心收录：

学科分类：08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Project (No. EP/H027262/1) partially supported by the Engineering and Physical Sciences Research Council UK 

主　　题：Railways Polyurethanes Geocomposites Modelling High-speed 

摘      要：There are many issues surrounding the performance of critical assets on high-speed ballasted railway *** assets like switch & crossings and bridge transitions high track forces can be produced resulting in higher ballast settlements and hence track *** latter result in higher track forces and hence more settlement,leading to the need for increased track maintenance to ensure comfort and *** technologies for solving issues like ballast movement under high-speed loading regimes are ***,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 *** 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.