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Stabilisation of Ballast and Subgrade with Geosynthetic Grids and Drains for Rail Infrastructure

Conference Paper


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Abstract


  • Rail tracks are often placed on ballast that is intended to provide a free draining and sound

    load bearing platform to ensure track stability and maintain proper alignment. In recent years, the

    increased demand of heavier and faster trains has posed greater challenges to the railway industry for

    improving efficiency and track stability while reducing maintenance costs. High traffic induced stresses

    always result in large plastic deformations and degradation of ballast, which in turn, leads to significant

    loss of track stability. The deformation and degradation of ballast are influenced by factors such as the

    amplitude and number of load cycles, gradation of aggregates, track confining pressure and the angularity

    and fracture strength of individual particles. Geosynthetic materials can also play an important role in

    improving the efficiency and performance of a ballasted rail track. This paper highlights laboratory testing

    and field trials carried out to demonstrate the beneficial use of geosynthetic grids and drains for rail

    infrastructure. The use of numerical models for analysing and predicting track behaviour is also

    elucidated.

Publication Date


  • 2011

Citation


  • Indraratna, B., Nimbalkar, S. & Rujikiatkamjorn, C. (2011). Stabilisation of Ballast and Subgrade with Geosynthetic Grids and Drains for Rail Infrastructure. In M. A. Shahin & H. Nikraz (Eds.), International Conference on Advances in Geotechnical Engineering (pp. 99-112). Australia: Curtin University.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2100&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/1063

Start Page


  • 99

End Page


  • 112

Place Of Publication


  • Australia

Abstract


  • Rail tracks are often placed on ballast that is intended to provide a free draining and sound

    load bearing platform to ensure track stability and maintain proper alignment. In recent years, the

    increased demand of heavier and faster trains has posed greater challenges to the railway industry for

    improving efficiency and track stability while reducing maintenance costs. High traffic induced stresses

    always result in large plastic deformations and degradation of ballast, which in turn, leads to significant

    loss of track stability. The deformation and degradation of ballast are influenced by factors such as the

    amplitude and number of load cycles, gradation of aggregates, track confining pressure and the angularity

    and fracture strength of individual particles. Geosynthetic materials can also play an important role in

    improving the efficiency and performance of a ballasted rail track. This paper highlights laboratory testing

    and field trials carried out to demonstrate the beneficial use of geosynthetic grids and drains for rail

    infrastructure. The use of numerical models for analysing and predicting track behaviour is also

    elucidated.

Publication Date


  • 2011

Citation


  • Indraratna, B., Nimbalkar, S. & Rujikiatkamjorn, C. (2011). Stabilisation of Ballast and Subgrade with Geosynthetic Grids and Drains for Rail Infrastructure. In M. A. Shahin & H. Nikraz (Eds.), International Conference on Advances in Geotechnical Engineering (pp. 99-112). Australia: Curtin University.

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2100&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/1063

Start Page


  • 99

End Page


  • 112

Place Of Publication


  • Australia