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    Simplified 1D Elastic Modeling of Duo-Pile Foundation System Incorporating the Interaction Mechanisms Prevailing under Lateral Loads

    Source: Journal of Bridge Engineering:;2022:;Volume ( 027 ):;issue: 004::page 04022014
    Author:
    Mohan Krishna Kolli
    ,
    Dhiman Basu
    ,
    Amit Prashant
    DOI: 10.1061/(ASCE)BE.1943-5592.0001850
    Publisher: ASCE
    Abstract: A Duo-pile foundation system can be an effective alternative where control of lateral deflection under eccentric lateral loads is stringent, e.g., in elevated highways and railways. Three-dimensional (3D) numerical analysis of such a system is more realistic but complicated and time-consuming. An equivalent one-dimensional (1D) analysis is desirable in practice, which is the focus of this article. First, a 3D model of Duo-pile has been analyzed in different scenarios to understand the interaction of piles and the connecting beam’s role. Next, 3D and 1D models of various components and their interactions have been analyzed independently to find equivalent spring constants by comparing results. It includes pile–soil–pile interactions in longitudinal, transverse, and vertical directions. The Duo-pile system transfers moment in the transverse direction of the viaduct through the connecting beam, making its behavior different from the longitudinal direction. The proposed model covers the piles’ reaction against the moment couple besides lateral and vertical pile interactions. The performance of the proposed 1D model of Duo-pile is assessed in different scenarios such as the presence of pier capping beam, soil heterogeneity, and soil nonlinearity under design loads. This model offers a simplified alternative with reasonable accuracy by realistically capturing the necessary interactions for serviceability conditions.
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      Simplified 1D Elastic Modeling of Duo-Pile Foundation System Incorporating the Interaction Mechanisms Prevailing under Lateral Loads

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4282361
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    contributor authorMohan Krishna Kolli
    contributor authorDhiman Basu
    contributor authorAmit Prashant
    date accessioned2022-05-07T20:23:20Z
    date available2022-05-07T20:23:20Z
    date issued2022-4-1
    identifier other(ASCE)BE.1943-5592.0001850.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282361
    description abstractA Duo-pile foundation system can be an effective alternative where control of lateral deflection under eccentric lateral loads is stringent, e.g., in elevated highways and railways. Three-dimensional (3D) numerical analysis of such a system is more realistic but complicated and time-consuming. An equivalent one-dimensional (1D) analysis is desirable in practice, which is the focus of this article. First, a 3D model of Duo-pile has been analyzed in different scenarios to understand the interaction of piles and the connecting beam’s role. Next, 3D and 1D models of various components and their interactions have been analyzed independently to find equivalent spring constants by comparing results. It includes pile–soil–pile interactions in longitudinal, transverse, and vertical directions. The Duo-pile system transfers moment in the transverse direction of the viaduct through the connecting beam, making its behavior different from the longitudinal direction. The proposed model covers the piles’ reaction against the moment couple besides lateral and vertical pile interactions. The performance of the proposed 1D model of Duo-pile is assessed in different scenarios such as the presence of pier capping beam, soil heterogeneity, and soil nonlinearity under design loads. This model offers a simplified alternative with reasonable accuracy by realistically capturing the necessary interactions for serviceability conditions.
    publisherASCE
    titleSimplified 1D Elastic Modeling of Duo-Pile Foundation System Incorporating the Interaction Mechanisms Prevailing under Lateral Loads
    typeJournal Paper
    journal volume27
    journal issue4
    journal titleJournal of Bridge Engineering
    identifier doi10.1061/(ASCE)BE.1943-5592.0001850
    journal fristpage04022014
    journal lastpage04022014-14
    page14
    treeJournal of Bridge Engineering:;2022:;Volume ( 027 ):;issue: 004
    contenttypeFulltext
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