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Article
Field assessment of the performance of a ballasted rail track with and without geosynthetics
Faculty of Engineering - Papers (Archive)
  • Buddhima Indraratna, University of Wollongong
  • Sanjay Nimbalkar, University of Wollongong
  • David Christie
  • Cholachat Rujikiatkamjorn, University of Wollongong
  • Jayan Sylaja J S Vinod, University of Wollongong
RIS ID
32734
Publication Date
1-1-2010
Publication Details

Indraratna, B, Nimbalkar, S, Christie, D, Rujikiatkamjorn, C & Vinod, JJS, Field assessment of the performance of a ballasted rail track with and without geosynthetics, Journal of Geotechnical & Geoenvironmental Engineering ASCE, 136(7), 2010, 907-917.

Abstract

Understanding the complex mechanisms of stress transfer and strain accumulation in layers of track substructure under repeated wheel loading is essential to predict the desirable track maintenance cycle as well as the design of the new track. Various finite element and analytical techniques have been developed in the past to understand the behavior of composite track layers subjected to repeated wheel loads. The mechanical behavior of ballast is influenced by several factors, including the track confining pressure, type of aggregates, and the number of loading cycles. A field trial was conducted on an instrumented track at Bulli, New South Wales, Australia, with the specific aims of studying the benefits of a geocomposite installed at the ballast-capping interface, and to evaluate the performance of moderately graded recycled ballast in comparison to traditionally very uniform fresh ballast. It was found that recycled ballast can be effectively reused if reinforced with a geocomposite. It was also found that geocomposite can effectively reduce vertical and lateral strains of the ballast with obvious implications for improved track stability and reduced maintenance costs.

Disciplines
Citation Information
Buddhima Indraratna, Sanjay Nimbalkar, David Christie, Cholachat Rujikiatkamjorn, et al.. "Field assessment of the performance of a ballasted rail track with and without geosynthetics" (2010) p. 907 - 917
Available at: http://works.bepress.com/crujikiatkamjorn/76/