Advancements in track technology: Use of artificial inclusions for stabilising transport infrastructure

This paper aims to demonstrate and discuss some major aspects related to stabilizing ballasted rail tracks overlying soft soils using artificial inclusions such as geosynthetics, recycled rubber mats, and end-of-life tyres. The use of geocomposites (i.e., bonded geogrid-geotextile layers) to enhance the performance of ballast is described with the aim of reducing track settlement, increasing the resilient modulus, and decreasing ballast degradation. The effects of increasing the confining pressure on rail track behaviour, particularly with regard to particle breakage has been studied using large-scale laboratory tests. We are therefore presenting a novel solution of confining the upper sub-ballast layer (capping) with energy-absorbing recycled rubber tyres to increase the stability and resiliency of track substructure. This study confirms that a sub-ballast layer confined by recycled rubber tyres can actively reduce ballast breakage within the track substructure. This study also carried out numerical simulations using finite element method (FEM) to examine how end-of-life tyres to improves track performance. The outcomes of this study will lead to a better understanding of how artificial inclusions-reinforced ballasted tracks perform, and then to a cost-effective track design with improved safety and passenger comfort.

• Record URL:
  https://australiangeomechanics.org/downloads/
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780994626103
• Authors:
  • Indraratna, B
  • Ngo, T N
  • Ferreira, F
• Conference:
  • Australia New Zealand Conference on Geomechanics, 13th, 2019, Perth, Western Australia, Australia
• Publication Date: 2019-4

Language

• English

Media Info

• Pagination: 791-6
• Monograph Title: Proceedings of the 13th Australia New Zealand Conference on Geomechanics Perth, Western Australia, 1-3 April, 2019

Subject/Index Terms

• TRT Terms: Base course (Pavements); Crumb rubber; Finite element method; Railroad rails; Ride quality
• ATRI Terms: Basecourse; Crumb rubber; Finite element method; Load damage relationship; Railway track; Riding quality; Stability

Filing Info

• Accession Number: 01714790
• Record Type: Publication
• Source Agency: ARRB Group Limited
• ISBN: 9780994626103
• Files: ITRD, ATRI
• Created Date: Aug 26 2019 11:51AM