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    Wyświetlanie 1-3 z 3
    Tytuł:
    Determination of the Effect of Sidewall Friction in Reinforced Soil Retaining Wall Experiments
    Autorzy:
    Kulczykowski, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/2097763.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    sidewall friction
    reinforced soil
    model investigations
    PIV analysis
    Opis:
    Asimple approach to estimate sidewall friction in reinforced soil model experiments conducted in parallel-sided test boxes with unlubricated walls is proposed. Analytical solutions are developed for reinforced soil slopes and retaining walls subjected to self-weight or external loading. It turns out that the frictional effect depends on the shape of the failure zone and the value of friction coefficient between soil and a sidewall material. The theoretical predictions were verified in laboratory experiments in a test box with lubricated and unlubricated sidewalls. It was shown that the method can be used to estimate sidewall friction not only under failure conditions, but also under all stages of surcharging prior to failure.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2021, 68, 2; 137--158
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental Investigation of Skirted Foundation in Sand Subjected to Rapid Uplift
    Autorzy:
    Kulczykowski, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1837763.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    skirted foundation
    suction caisson
    pullout resistance
    rapid uplift
    model investigations
    Opis:
    This paper reports results from 1g model tests carried out under single gravity on a skirted foundation installed in sand and subjected to a rapid uplifting force. The effects of displacement rates ranging from 5 mm/s to 450 mm/s on the ultimate capacity, suction pressure inside the skirt compartment, and time of extraction were investigated. Test results indicate that the displacement rate significantly affected the magnitude of uplift resistance, as well as the magnitude of suction under the foundation lid, but had little effect on the relationship between stress and the displacement of the foundation. The shapes of the uplift capacity-displacement curve and the suction-displacement curve were similar for all experimental displacement rates.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2020, 67, 1-4; 17-34
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of the Causes of a Landslide in Koronowo (Polish Lowlands)
    Autorzy:
    Zabuski, Lesław
    Kulczykowski, Marek
    Świdziński, Waldemar
    Powiązania:
    https://bibliotekanauki.pl/articles/241015.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    landslide causes
    landslide development
    atmospheric conditions
    faulty construction
    Opis:
    The paper discusses difficulties of identifying the causes of a landslide. These difficulties are illustrated in the example of a catastrophic landslide on the embankment of the western bank of the Brda River, which affected a bridge abutment of a disused narrow-gauge railway line from Bydgoszcz to Koronowo (Polish Lowlands). The railway was closed in 1992, and after the removal of the track, the bridge served as a pedestrian overpass. The landslide occurred in February 2011. Investigations revealed that the first signs of the landslide were cracks and subsidence that appeared at the embankment crest. Then, an initially slow movement accelerated suddenly, resulting in an over 45 m total displacement of the soil mass. The primary passive cause of the landslide movement resulted from the geology of the mass (loose soils underlain by cohesive soils) and from the steep inclination of the embankment surface. Active causes, however, are often ambiguous. In this case, no significant apparent phenomena which could trigger the movement occurred in the days preceding its initiation. Therefore, a detailed analysis of atmospheric conditions was carried out to identify and explain the causes. It was proved that the fundamental triggering cause of the landslide was a combination of rainfall, snowfall, snow-melting and air temperature. Moreover, an important cause was a faulty construction of a ditch with a sewage pipe on the crest of the embankment.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2019, 66, 1-2; 47-56
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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