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    Numerical and Analytical Study on Axial Ultimate Bearing Capacity of Fixed-Head Energy Piles in Different Soils

    Source: International Journal of Geomechanics:;2022:;Volume ( 022 ):;issue: 001::page 04021258
    Author:
    Amir Akbari Garakani
    ,
    Bahareh Heidari
    ,
    Sahar Mokhtari Jozani
    ,
    Omid Ghasemi-Fare
    DOI: 10.1061/(ASCE)GM.1943-5622.0002223
    Publisher: ASCE
    Abstract: In this paper, the axial ultimate bearing capacity of fixed-head concrete energy piles is studied considering various soils and thermomechanical loads, through numerical and analytical models. Accordingly, an axisymmetric numerical approach was adopted using the finite-element method by considering temperature-dependent soil and pile–soil interface parameters, and the results were validated using experimental datasets. Quantitative and statistical comparisons showed an acceptable agreement between the numerical predictions and experimental observations. Then, a vast numerical parametric study was carried out on various soil strength parameters and different thermomechanical conditions to evaluate the changes in compressive/tensile ultimate bearing capacity of the fixed-head energy piles in dry and saturated soils. The results showed that temperature changes and environmental conditions have significant effects on the ultimate load capacity of energy piles. Thereafter, different analytical approaches were developed for various soil types and thermomechanical loading conditions to assess the soil–structure and thermomechanical interactions between the examined energy piles and the surrounding soil. Accordingly, by comparing the obtained results from the analytical and numerical solutions, the best analytical approach for each soil type and load condition was proposed. Finally, by performing an analytical sensitivity study on the geometrical aspects of the examined energy piles, the remarkable effects of the pile diameter and pile length on the ultimate load capacity of energy piles were revealed.
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      Numerical and Analytical Study on Axial Ultimate Bearing Capacity of Fixed-Head Energy Piles in Different Soils

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4283352
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    contributor authorAmir Akbari Garakani
    contributor authorBahareh Heidari
    contributor authorSahar Mokhtari Jozani
    contributor authorOmid Ghasemi-Fare
    date accessioned2022-05-07T21:07:14Z
    date available2022-05-07T21:07:14Z
    date issued2022-1-1
    identifier other(ASCE)GM.1943-5622.0002223.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4283352
    description abstractIn this paper, the axial ultimate bearing capacity of fixed-head concrete energy piles is studied considering various soils and thermomechanical loads, through numerical and analytical models. Accordingly, an axisymmetric numerical approach was adopted using the finite-element method by considering temperature-dependent soil and pile–soil interface parameters, and the results were validated using experimental datasets. Quantitative and statistical comparisons showed an acceptable agreement between the numerical predictions and experimental observations. Then, a vast numerical parametric study was carried out on various soil strength parameters and different thermomechanical conditions to evaluate the changes in compressive/tensile ultimate bearing capacity of the fixed-head energy piles in dry and saturated soils. The results showed that temperature changes and environmental conditions have significant effects on the ultimate load capacity of energy piles. Thereafter, different analytical approaches were developed for various soil types and thermomechanical loading conditions to assess the soil–structure and thermomechanical interactions between the examined energy piles and the surrounding soil. Accordingly, by comparing the obtained results from the analytical and numerical solutions, the best analytical approach for each soil type and load condition was proposed. Finally, by performing an analytical sensitivity study on the geometrical aspects of the examined energy piles, the remarkable effects of the pile diameter and pile length on the ultimate load capacity of energy piles were revealed.
    publisherASCE
    titleNumerical and Analytical Study on Axial Ultimate Bearing Capacity of Fixed-Head Energy Piles in Different Soils
    typeJournal Paper
    journal volume22
    journal issue1
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0002223
    journal fristpage04021258
    journal lastpage04021258-18
    page18
    treeInternational Journal of Geomechanics:;2022:;Volume ( 022 ):;issue: 001
    contenttypeFulltext
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