Abstract An in-situ large-scale earth pressure test was undertaken in a natural loess slope in Lanzhou, China. A 14.5-m-high natural slope was gradually cut into a vertical slope through a series of eight slope cutting work conditions. By pre-installing re-bar meters and cutting slope unloading, the real earth pressure distribution law and potential slip surface development mechanism, along with the variation of the Slope Cutting Depth (SCD), were obtained under the condition that each point in the free surface can move independently and freely. Earth pressure increases slowly at first and then decreases sharply along the Slope Excavating Depth (SED). The increase rate for 9.0 to 10.4 m is 3 to 4 times as much as the former conditions, so the self-stability height of the slope is 9.0 to 10.4 m. The unsaturated natural loess shear outlet of the slope is always located at the H/3 (where H is the natural slope height) position, so the slip surface does not pass through the bottom of the slope. The measured values of unsaturated vertical slope earth pressures are far less than the values calculated by Rankine’s earth pressure theory–especially the size and position of the maximum earth pressure.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Field Testing of Earth Pressures in a Large-scale Natural Loess Slope


    Beteiligte:
    Kong, Yang (Autor:in) / Ruan, Huai-ning (Autor:in) / Huang, Xue-feng (Autor:in) / Zhu, Zhen-de (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2017-09-29


    Format / Umfang :

    8 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Field Testing of Earth Pressures in a Large-scale Natural Loess Slope

    Kong, Yang / Ruan, Huai-ning / Huang, Xue-feng et al. | Online Contents | 2018


    Slope Stability of Loess Revisited

    Lohnes, Robert A. / Kjartanson, Bruce H. | Transportation Research Record | 2002


    Loess road slope health monitoring method

    WANG CHUBIN / ZHENG WANPENG / LUAN JIHAO et al. | Europäisches Patentamt | 2022

    Freier Zugriff

    Collapsible loess high slope material transportation device

    LI XIANGLONG / CAO ZEPENG / WANG YANQIU | Europäisches Patentamt | 2023

    Freier Zugriff

    Earth Pressure Distribution Characteristics of Loess Subgrade Culvert

    Wang, Feng / Ye, Hai-lin / Fan, Yao-jiang et al. | ASCE | 2021