The demand for increased axle loads and speeds of trains can diminish the stability of track substructure, leading to potential particle migration or slurry pumping under critical drainage conditions. This paper primarily focuses on the role of geosynthetics in mitigating the risk of soil fluidization potential under cyclic load. Laboratory experiments were conducted to evaluate the effectiveness of geosynthetics including geotextiles, geocomposites, and prefabricated vertical drains (PVDs). The laboratory study indicates that subgrade instability primarily occurs due to the migration of fines towards the subgrade surface and the substantial increase in moisture content (MC). Dynamic Filtration Tests (DFTs) reveal that geocomposite inclusion in rail tracks can reduce the fluidization potential of soft soils and the combined prefabricated vertical drains-geocomposite system can be used to mitigate the critical excess pore water pressure (EPWP) that accumulates in shallow or deeper soil layer due to activated radial drainage paths.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Subgrade Fluidization Under Cyclic Loading and Preventive Measure by Geosynthetics


    Weitere Titelangaben:

    Lecture Notes in Civil Engineering


    Beteiligte:
    Rujikiatkamjorn, Cholachat (Herausgeber:in) / Xue, Jianfeng (Herausgeber:in) / Indraratna, Buddhima (Herausgeber:in) / Arivalagan, Joseph (Autor:in) / Rujikiatkamjorn, Cholachat (Autor:in) / Indraratna, Buddhima (Autor:in) / Warwick, Andy (Autor:in)

    Kongress:

    International Conference on Transportation Geotechnics ; 2024 ; Sydney, NSW, Australia November 20, 2024 - November 22, 2024



    Erscheinungsdatum :

    22.10.2024


    Format / Umfang :

    10 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Fluidization of Subgrade Soil Under Rail Tracks Through CFD-DEM Coupling

    Nguyen, Thanh Trung / Indraratna, Buddhima | TIBKAT | 2021


    An Investigation into Subgrade Fluidisation in Transport Infrastructure Under Cyclic Loading

    Abeywickrama, Thilini Piumali / Liyanapathirana, D. S. / Fuentes, William et al. | Springer Verlag | 2024


    Effect of Granular Layer Properties on the Stabilisation of Weak Subgrade with Geosynthetics

    Mithila, Shehan / Fernando, Arnold / Jayakody, Shiran et al. | Springer Verlag | 2024


    Eight-Year Field Performance of Secondary Road Incorporating Geosynthetics at Subgrade-Base Interface

    Ai-Qadi, Imad L. / Appea, Alexander Kwasi | Transportation Research Record | 2003


    Role of Fabric on the Shear Behaviour of Subgrade Soil under Cyclic Loading

    Silva, Isabella Novais / Indraratna, Buddhima / Nguyen, Thanh T. et al. | Springer Verlag | 2024