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    Simplified Calculation Method of Wall–Brace Coordinated Deformation in the Excavation Process of a Foundation Pit under Multifactor Coupling

    Source: International Journal of Geomechanics:;2025:;Volume ( 025 ):;issue: 002::page 04024354-1
    Author:
    Hui Li
    ,
    Yanlin Li
    ,
    Aijun Yao
    ,
    Yifei Gong
    ,
    Xiaoming Liang
    DOI: 10.1061/IJGNAI.GMENG-10344
    Publisher: American Society of Civil Engineers
    Abstract: This paper proposes a coordinated deformation calculation method for foundation pit engineering to improve deformation control between underground diaphragm walls and supports. The study validates the practicality of the coordinated deformation formula through actual engineering applications and simulation analysis, making it particularly suitable for foundation pit calculations with external overloads or additional loads caused by outer pit slopes. Finite-element software PLAXIS 3D (version 2022) is used for simulation, with the soil modeled using the hardening small strain constitutive model. When considering support positions and construction sequences, the calculations found that supports placed near the top of the wall and early installation of supports are more effective in controlling deformation. Additionally, the calculations show that the slope height of the outer pit, and the relative position between the outer and inner pits, significantly affect the deformation of the inner pit support structure. The smaller the outer pit slope height and the greater the distance from the outer pit to the inner pit, the less deformation occurs in the underground diaphragm wall. This method simplifies the calculation process and is applicable to various foundation pit excavation projects.
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      Simplified Calculation Method of Wall–Brace Coordinated Deformation in the Excavation Process of a Foundation Pit under Multifactor Coupling

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4303910
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    contributor authorHui Li
    contributor authorYanlin Li
    contributor authorAijun Yao
    contributor authorYifei Gong
    contributor authorXiaoming Liang
    date accessioned2025-04-20T10:03:23Z
    date available2025-04-20T10:03:23Z
    date copyright12/11/2024 12:00:00 AM
    date issued2025
    identifier otherIJGNAI.GMENG-10344.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4303910
    description abstractThis paper proposes a coordinated deformation calculation method for foundation pit engineering to improve deformation control between underground diaphragm walls and supports. The study validates the practicality of the coordinated deformation formula through actual engineering applications and simulation analysis, making it particularly suitable for foundation pit calculations with external overloads or additional loads caused by outer pit slopes. Finite-element software PLAXIS 3D (version 2022) is used for simulation, with the soil modeled using the hardening small strain constitutive model. When considering support positions and construction sequences, the calculations found that supports placed near the top of the wall and early installation of supports are more effective in controlling deformation. Additionally, the calculations show that the slope height of the outer pit, and the relative position between the outer and inner pits, significantly affect the deformation of the inner pit support structure. The smaller the outer pit slope height and the greater the distance from the outer pit to the inner pit, the less deformation occurs in the underground diaphragm wall. This method simplifies the calculation process and is applicable to various foundation pit excavation projects.
    publisherAmerican Society of Civil Engineers
    titleSimplified Calculation Method of Wall–Brace Coordinated Deformation in the Excavation Process of a Foundation Pit under Multifactor Coupling
    typeJournal Article
    journal volume25
    journal issue2
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/IJGNAI.GMENG-10344
    journal fristpage04024354-1
    journal lastpage04024354-11
    page11
    treeInternational Journal of Geomechanics:;2025:;Volume ( 025 ):;issue: 002
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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