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    Research on the Slurry Diffusion and Load-Bearing Characteristics of Postgrouted Piles in Loess Areas

    Source: International Journal of Geomechanics:;2024:;Volume ( 024 ):;issue: 009::page 04024183-1
    Author:
    Jingwei Zhang
    ,
    Xuanyu Chen
    ,
    Jia Li
    ,
    Chengwei Zhang
    DOI: 10.1061/IJGNAI.GMENG-9682
    Publisher: American Society of Civil Engineers
    Abstract: Collapsibility significantly impacts the bearing capacity of pile foundations in loess areas. To improve the load-bearing capacity of piles, the pile-base postgrouting technique is widely used worldwide. However, there are still several related issues to be solved: the impact of loess collapsibility on the bearing capacity; the effectiveness of the pile-base postgrouting technique in enhancing the bearing capacity; and the diffusion pattern of the grout during the grouting process. To investigate these issues, this experiment utilizes a visual static pressure device combined with numerical simulation. According to the experiment, the maximum axial force and neutral point appeared to shift downward after grouting, resulting in a 17.5% increase in the bearing capacity of the pile foundation. Additionally, an increase in grouting pressure leads to a rise in both the number of shear cracks and the diffusion radius. As the permeability of the grout improves, the number of shear cracks and diffusion radii tend to stabilize after an initial increase. These discoveries enable a thorough analysis of the changes in side friction and base resistance of postgrouted piles in collapsible loess. Furthermore, they provide valuable references and guidance for the implementation of the pile-base postgrouting technique in loess areas.
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      Research on the Slurry Diffusion and Load-Bearing Characteristics of Postgrouted Piles in Loess Areas

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4298428
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    contributor authorJingwei Zhang
    contributor authorXuanyu Chen
    contributor authorJia Li
    contributor authorChengwei Zhang
    date accessioned2024-12-24T10:10:19Z
    date available2024-12-24T10:10:19Z
    date copyright9/1/2024 12:00:00 AM
    date issued2024
    identifier otherIJGNAI.GMENG-9682.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4298428
    description abstractCollapsibility significantly impacts the bearing capacity of pile foundations in loess areas. To improve the load-bearing capacity of piles, the pile-base postgrouting technique is widely used worldwide. However, there are still several related issues to be solved: the impact of loess collapsibility on the bearing capacity; the effectiveness of the pile-base postgrouting technique in enhancing the bearing capacity; and the diffusion pattern of the grout during the grouting process. To investigate these issues, this experiment utilizes a visual static pressure device combined with numerical simulation. According to the experiment, the maximum axial force and neutral point appeared to shift downward after grouting, resulting in a 17.5% increase in the bearing capacity of the pile foundation. Additionally, an increase in grouting pressure leads to a rise in both the number of shear cracks and the diffusion radius. As the permeability of the grout improves, the number of shear cracks and diffusion radii tend to stabilize after an initial increase. These discoveries enable a thorough analysis of the changes in side friction and base resistance of postgrouted piles in collapsible loess. Furthermore, they provide valuable references and guidance for the implementation of the pile-base postgrouting technique in loess areas.
    publisherAmerican Society of Civil Engineers
    titleResearch on the Slurry Diffusion and Load-Bearing Characteristics of Postgrouted Piles in Loess Areas
    typeJournal Article
    journal volume24
    journal issue9
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/IJGNAI.GMENG-9682
    journal fristpage04024183-1
    journal lastpage04024183-14
    page14
    treeInternational Journal of Geomechanics:;2024:;Volume ( 024 ):;issue: 009
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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