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Impact of ballast fouling on rail tracks

Conference Paper


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Abstract


  • Ballast fouling is understood as major cause of track deterioration in many countries

    over the world. It decreases the drainage and load bearing capacity of the ballast

    layer. A series of large scale hydraulic conductivity tests were conducted with

    different proportions of fouling to access the drainage capacity of the track. A

    numerical analysis was conducted using SEEP/W to quantify the drainage capacity

    of ballast under different degrees of fouling. Subsequently, track drainage

    classification in relation to the degree of fouling, which is a very useful tool for

    practical engineers, is presented in this paper. The analysis showed that both the

    location and extent of fouling played an important role when assessing the overall

    drainage capacity of track. In order to establish the relationship between the extent

    of fouling and the associated strength-deformation properties, a series of large scale

    monotonic triaxial tests were carried out for different levels of fouling for three

    different confining pressures. Based on the laboratory findings, a novel empirical

    relationship between the peak deviator stress and VCI has been proposed to assist

    the practitioner in their preliminary track condition assessment. By considering

    drainage and strength aspects, a critical level of fouling to assist in track

    maintenance planning has been considered.

Publication Date


  • 2014

Citation


  • Tennakoon, N., Indraratna, B. & Nimbalkar, S. (2014). Impact of ballast fouling on rail tracks. Second International Conference on Railway Technology: Research, Development and Maintenance (pp. 1-11). Scotland: Civil-Comp Press.

Scopus Eid


  • 2-s2.0-84963742202

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3475&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2466

Start Page


  • 1

End Page


  • 11

Place Of Publication


  • Scotland

Abstract


  • Ballast fouling is understood as major cause of track deterioration in many countries

    over the world. It decreases the drainage and load bearing capacity of the ballast

    layer. A series of large scale hydraulic conductivity tests were conducted with

    different proportions of fouling to access the drainage capacity of the track. A

    numerical analysis was conducted using SEEP/W to quantify the drainage capacity

    of ballast under different degrees of fouling. Subsequently, track drainage

    classification in relation to the degree of fouling, which is a very useful tool for

    practical engineers, is presented in this paper. The analysis showed that both the

    location and extent of fouling played an important role when assessing the overall

    drainage capacity of track. In order to establish the relationship between the extent

    of fouling and the associated strength-deformation properties, a series of large scale

    monotonic triaxial tests were carried out for different levels of fouling for three

    different confining pressures. Based on the laboratory findings, a novel empirical

    relationship between the peak deviator stress and VCI has been proposed to assist

    the practitioner in their preliminary track condition assessment. By considering

    drainage and strength aspects, a critical level of fouling to assist in track

    maintenance planning has been considered.

Publication Date


  • 2014

Citation


  • Tennakoon, N., Indraratna, B. & Nimbalkar, S. (2014). Impact of ballast fouling on rail tracks. Second International Conference on Railway Technology: Research, Development and Maintenance (pp. 1-11). Scotland: Civil-Comp Press.

Scopus Eid


  • 2-s2.0-84963742202

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=3475&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2466

Start Page


  • 1

End Page


  • 11

Place Of Publication


  • Scotland