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    Influences of Initial Water Content and Roughness on Skin Friction of Piles Using FBG Technique

    Source: International Journal of Geomechanics:;2017:;Volume ( 017 ):;issue: 004
    Author:
    L. Borana
    ,
    J. H. Yin
    ,
    D. N. Singh
    ,
    S. K. Shukla
    ,
    H. F. Pei
    DOI: 10.1061/(ASCE)GM.1943-5622.0000794
    Publisher: American Society of Civil Engineers
    Abstract: A series of pullout tests were conducted on a model pile in a soil with different initial water contents and different pile surface roughnesses to study their influences on pile skin friction. To measure axial strains and skin friction of the pile, fiber Bragg grating (FBG) strain sensors were used. Data were collected during the pullout tests and are analyzed in this paper. Test results indicate that the skin friction and axial strain of the model piles decrease with the initial water content of the soil but increase with the degree of surface roughness of the piles. The axial strain induced in the upper segment of the tested pile is considerably greater than that in the bottom segment of the pile. In addition, the skin friction is distributed nonlinearly along the length of the model piles.
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      Influences of Initial Water Content and Roughness on Skin Friction of Piles Using FBG Technique

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4240044
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    contributor authorL. Borana
    contributor authorJ. H. Yin
    contributor authorD. N. Singh
    contributor authorS. K. Shukla
    contributor authorH. F. Pei
    date accessioned2017-12-16T09:12:58Z
    date available2017-12-16T09:12:58Z
    date issued2017
    identifier other%28ASCE%29GM.1943-5622.0000794.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4240044
    description abstractA series of pullout tests were conducted on a model pile in a soil with different initial water contents and different pile surface roughnesses to study their influences on pile skin friction. To measure axial strains and skin friction of the pile, fiber Bragg grating (FBG) strain sensors were used. Data were collected during the pullout tests and are analyzed in this paper. Test results indicate that the skin friction and axial strain of the model piles decrease with the initial water content of the soil but increase with the degree of surface roughness of the piles. The axial strain induced in the upper segment of the tested pile is considerably greater than that in the bottom segment of the pile. In addition, the skin friction is distributed nonlinearly along the length of the model piles.
    publisherAmerican Society of Civil Engineers
    titleInfluences of Initial Water Content and Roughness on Skin Friction of Piles Using FBG Technique
    typeJournal Paper
    journal volume17
    journal issue4
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0000794
    treeInternational Journal of Geomechanics:;2017:;Volume ( 017 ):;issue: 004
    contenttypeFulltext
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