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Field assessment of the performance of a ballasted rail track with and without geosynthetics

Journal Article


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.

Publication Date


  • 2010

Citation


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

Scopus Eid


  • 2-s2.0-77955593394

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/876

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 907

End Page


  • 917

Volume


  • 136

Issue


  • 7

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.

Publication Date


  • 2010

Citation


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

Scopus Eid


  • 2-s2.0-77955593394

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/876

Has Global Citation Frequency


Number Of Pages


  • 10

Start Page


  • 907

End Page


  • 917

Volume


  • 136

Issue


  • 7