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    Wyświetlanie 1-4 z 4
    Tytuł:
    Ultimate Bearing Capacity of Strip Footing on Sand Underlain By Clay Under Inclined Load
    Autorzy:
    Dutta, Rakesh Kumar
    Khatri, Vishwas Nandkishor
    Kaundal, Nitesh
    Powiązania:
    https://bibliotekanauki.pl/articles/27314700.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    strip footing
    bearing capacity
    layered soils
    load
    ława fundamentowa
    nośność
    grunt wielowarstwowy
    obciążenie
    Opis:
    This paper presents the bearing capacity determination of strip footing placed on sand underlain by clay and subjected to inclined loading. The bearing capacity equation is derived within the framework of limit equilibrium by following the projected area approach. The inclinations of load spread were selected by performing an additional finite element analysis. A parametric study was conducted to highlight the effect of various input parameters such as i) the thickness of the top sand layer, ii) embedment depth of footing, iii) the friction angle of sand and cohesion of clay, and iv) inclination of the applied load. The obtained results for a vertically loaded footing are slightly underestimated with that available in the literature. The computed bearing capacity values for a foundation with inclined loading compare favorably for lower inclination angle but slightly overestimates for higher load inclination angle, concerning that obtained using the available formula in the literature.
    Źródło:
    Civil and Environmental Engineering Reports; 2022, 32, 1; 116--137
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical Investigation of Square Footing Positioned on Geocell Reinforced Sand by using ABAQUS Software
    Autorzy:
    Juneja, Gaurav
    Sharma, Ravi Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/27314746.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    square footing
    geocell reinforcement
    weak soil
    numerical investigation
    MES
    ABAQUS software
    ława fundamentowa
    zbrojenie
    słabe grunty
    badania numeryczne
    ABAQUS
    Opis:
    The usage of geocell reinforcement for foundations supported on weak soil has been increased these days. The purposed study uses FEM-based ABAQUS software to analyse the behaviour of square footing supported on geocell reinforced sands subjected to static vertical loading. Numerical analysis was performed to find the optimum combination of the different geometric parameters of the geocell reinforcement. Three distinct types of sands were employed in the study with relative densities of 30%, 50%, and 70%. The geometric parameters of the geocell, such as the placement depth of geocell (u), the width (b), and the height (h) of the geocell, were modified in relation to the footing width (B) to access the optimum combination ratios. The inclusion of the geocell reinforcement increases the load-carrying capacity up to 5-6 times compared to unreinforced sand. The results obtained from the numerical analysis were intended to correlate well with the experimental data available in the literature.
    Źródło:
    Civil and Environmental Engineering Reports; 2022, 32, 2; 154--173
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pressure Settlement Behaviour and Bearing Capacity of Asymmetric Embedded Plus Shaped Footing on Layered Sand
    Autorzy:
    Rawat, Priyanka
    Dutta, Rakesh Kumar
    Powiązania:
    https://bibliotekanauki.pl/articles/2051675.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    granulated blast furnace slag
    soil stabilization
    settlement
    shaped footing
    numerical investigations
    żużel wielkopiecowy granulowany
    stabilizacja gruntu
    osiadanie
    ława fundamentowa
    badania numeryczne
    Opis:
    The aim of the present numerical study was to analyse the pressure settlement behaviour and bearing capacity of asymmetric plus shaped footing resting on loose sand overlying dense sand at varying embedment depth. The numerical investigation was carried out using ABAQUS software. The effect of depth of embedment, friction angle of upper loose and lower dense sand layer and thickness of upper loose sand on the bearing capacity of the asymmetric plus shaped footing was studied in this investigation. Further, the comparison of the results of the bearing capacity was made between the asymmetric and symmetric plus shaped footing. The results reveal that with increase in depth of embedment, the dimensionless bearing capacity of the footings increased. The highest increase in the dimensionless bearing capacity was observed at embedment ratio of 1.5. The increase in the bearing capacity was 12.62 and 11.40 times with respect to the surface footings F1 and F2 corresponding to a thickness ratio of 1.5. The lowest increase in the dimensionless bearing capacity was observed at embedment ratio of 0.1 and the corresponding increase in the bearing capacity was 1.05 and 1.02 times with respect to the surface footing for footings F1 and F2 at a thickness ratio of 1.5.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 3; 152-176
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Seismic Bearing Capacity of a Strip Footing Resting on Reinforced Earth Bed using Pseudo-Static Analysis
    Autorzy:
    Jaiswal, Sagar
    Chauchan, Vinay Bhusan
    Powiązania:
    https://bibliotekanauki.pl/articles/2051717.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    reinforced earth
    bearing capacity
    strip footing
    finite element method
    pseudo-static analysis
    wzmocnienie podłoża
    nośność
    ława fundamentowa
    metoda elementów skończonych
    analiza pseudostatyczna
    Opis:
    The use of geosynthetic reinforcement to enhance the ultimate load-bearing capacity and reduce the anticipated settlement of the shallow foundation has gained sufficient attention in the geotechnical field. The improved performance of the shallow foundation is achieved by providing one or more layers of geosynthetics below the foundation. The full wraparound technique proved to be efficient for the confinement of soil mass and reduction in settlement of foundation however lacks the literature to ascertain the performances of such footing under dynamic loading. In view of the above, the present study examines the effect of geosynthetic layers having a finite length with full wraparound ends as a reinforcement layer, placed horizontally at a suitable depth below the foundation using the finite element modeling (FEM) and evaluates the ultimate load-bearing capacity of a strip footing resting on loose and dense coarse-grained earth beds under seismic loading and further compared to those of footing resting on unreinforced earth bed. Moreover, the effect of horizontal seismic acceleration coefficient (kh) on the ultimate load-bearing capacity has been investigated by varying kh from 0.1 to 0.6 at an interval of 0.1, for both reinforced and unreinforced earth bed having loose and dense soil strata. Furthermore, this study demonstrates that by adopting the new practice of using the geosynthetic reinforcement with the full wraparound ends in foundations, it is possible to support relatively heavier structures under static as well as dynamic loading without allowing large footing settlements. From the outcomes of the present study, it is noted that the ultimate load-bearing capacity of footing resting on loose and dense sand bed found to be improved by 60% and 18% for soils having friction angle of 25° and 40°, respectively compared to respective unreinforced earth beds under static condition.
    Źródło:
    Civil and Environmental Engineering Reports; 2021, 31, 2; 117-137
    2080-5187
    2450-8594
    Pojawia się w:
    Civil and Environmental Engineering Reports
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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