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Performance monitoring of rail tracks stabilized by geosynthetics and shock mats: case studies at Bulli and Singleton in Australia

Conference Paper


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Abstract


  • Rail tracks are conventionally built on compacted ballast and structural fill

    embankments overlying the natural subsoil. Ballast plays an important role in

    providing track stiffness to support heavy traffic loads, and providing rapid drainage.

    However, ballast deforms and degrades progressively under the heavy cyclic loading

    of passenger and freight trains, which may lead to a loss of track geometry, and

    require costly regular maintenance. In particular, track construction requires

    appropriate stabilization techniques for ballast, the extent of which depends also on

    the type of subgrade.

    Comprehensive field trials were carried out on two rail lines in Bulli and recently

    in Singleton, New South Wales, Australia. In these studies, several track sections

    were reinforced with different types of geosynthetics placed beneath the ballast

    embankment. Both fresh and recycled ballast was examined for varying subgrade

    conditions. Recoverable and irrecoverable deformations of the substructure were

    routinely monitored. It was found that geogrids and geocomposites can decrease the

    vertical strains of the ballast layer, resulting in reduced maintenance costs. This

    paper describes the comprehensive field instrumentation, construction procedures,

    and field performance evaluation of these full-scale geosynthetic- stabilized ballast

    embankments in Bulli and Singleton.

Publication Date


  • 2013

Citation


  • Indraratna, B., Nimbalkar, S., Anantanasakul, P., Rujikiatkamjorn, C. & Neville, T. (2013). Performance monitoring of rail tracks stabilized by geosynthetics and shock mats: case studies at Bulli and Singleton in Australia. Geo-Congress 2013 (pp. 19-33). United States: American Society of Civil Engineers.

Scopus Eid


  • 2-s2.0-84887464761

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2917&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1908

Has Global Citation Frequency


Start Page


  • 19

End Page


  • 33

Place Of Publication


  • United States

Abstract


  • Rail tracks are conventionally built on compacted ballast and structural fill

    embankments overlying the natural subsoil. Ballast plays an important role in

    providing track stiffness to support heavy traffic loads, and providing rapid drainage.

    However, ballast deforms and degrades progressively under the heavy cyclic loading

    of passenger and freight trains, which may lead to a loss of track geometry, and

    require costly regular maintenance. In particular, track construction requires

    appropriate stabilization techniques for ballast, the extent of which depends also on

    the type of subgrade.

    Comprehensive field trials were carried out on two rail lines in Bulli and recently

    in Singleton, New South Wales, Australia. In these studies, several track sections

    were reinforced with different types of geosynthetics placed beneath the ballast

    embankment. Both fresh and recycled ballast was examined for varying subgrade

    conditions. Recoverable and irrecoverable deformations of the substructure were

    routinely monitored. It was found that geogrids and geocomposites can decrease the

    vertical strains of the ballast layer, resulting in reduced maintenance costs. This

    paper describes the comprehensive field instrumentation, construction procedures,

    and field performance evaluation of these full-scale geosynthetic- stabilized ballast

    embankments in Bulli and Singleton.

Publication Date


  • 2013

Citation


  • Indraratna, B., Nimbalkar, S., Anantanasakul, P., Rujikiatkamjorn, C. & Neville, T. (2013). Performance monitoring of rail tracks stabilized by geosynthetics and shock mats: case studies at Bulli and Singleton in Australia. Geo-Congress 2013 (pp. 19-33). United States: American Society of Civil Engineers.

Scopus Eid


  • 2-s2.0-84887464761

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2917&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1908

Has Global Citation Frequency


Start Page


  • 19

End Page


  • 33

Place Of Publication


  • United States