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    Analysis of Expanded Radius and Internal Expanding Pressure for Undrained Cylindrical Cavity Expansion

    Source: International Journal of Geomechanics:;2018:;Volume ( 018 ):;issue: 002
    Author:
    C. F. Zhao
    ,
    Y. Fei
    ,
    C. Zhao
    ,
    S. H. Jia
    DOI: 10.1061/(ASCE)GM.1943-5622.0001058
    Publisher: American Society of Civil Engineers
    Abstract: Solutions for cylindrical cavity expansion have been studied widely in many aspects, but the analysis of expanded radius and internal expanding pressure is rarely found. In practical engineering, it is of great significance to determine the relationship of the initial expanded radius (a0) and expanding pressure (p). Based on the unified strength theory (UST), a theoretical relationship among the initial radius (a0), the expanded radius (a), and the expanding pressure (p) of the cylindrical cavity was derived under the condition of nondrainage. By using the theoretical relationship obtained, the limit expanding pressure (pu) and the stress and displacement fields were achieved, as well as the plastic-zone radius (rp). The influence of the intermediate principal stress coefficient (b) on stress fields and expanding pressure (pu) is also discussed. A parametric study showed that the stress and displacement fields in undrained conditions are only related to the initial radius (a0) and the expanding pressure (p), and the expanded radius (a) is a function of the expanding pressure (p) under a given initial radius (a0). In addition, the effect of intermediate principal stress on the pu is nonnegligible, whereas the effect on the stress is limited. At last, the validation of the proposed theoretical solution was demonstrated by comparing with the conventional theoretical solution and field test results.
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      Analysis of Expanded Radius and Internal Expanding Pressure for Undrained Cylindrical Cavity Expansion

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4244125
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    • International Journal of Geomechanics

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    contributor authorC. F. Zhao
    contributor authorY. Fei
    contributor authorC. Zhao
    contributor authorS. H. Jia
    date accessioned2017-12-30T12:58:49Z
    date available2017-12-30T12:58:49Z
    date issued2018
    identifier other%28ASCE%29GM.1943-5622.0001058.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4244125
    description abstractSolutions for cylindrical cavity expansion have been studied widely in many aspects, but the analysis of expanded radius and internal expanding pressure is rarely found. In practical engineering, it is of great significance to determine the relationship of the initial expanded radius (a0) and expanding pressure (p). Based on the unified strength theory (UST), a theoretical relationship among the initial radius (a0), the expanded radius (a), and the expanding pressure (p) of the cylindrical cavity was derived under the condition of nondrainage. By using the theoretical relationship obtained, the limit expanding pressure (pu) and the stress and displacement fields were achieved, as well as the plastic-zone radius (rp). The influence of the intermediate principal stress coefficient (b) on stress fields and expanding pressure (pu) is also discussed. A parametric study showed that the stress and displacement fields in undrained conditions are only related to the initial radius (a0) and the expanding pressure (p), and the expanded radius (a) is a function of the expanding pressure (p) under a given initial radius (a0). In addition, the effect of intermediate principal stress on the pu is nonnegligible, whereas the effect on the stress is limited. At last, the validation of the proposed theoretical solution was demonstrated by comparing with the conventional theoretical solution and field test results.
    publisherAmerican Society of Civil Engineers
    titleAnalysis of Expanded Radius and Internal Expanding Pressure for Undrained Cylindrical Cavity Expansion
    typeJournal Paper
    journal volume18
    journal issue2
    journal titleInternational Journal of Geomechanics
    identifier doi10.1061/(ASCE)GM.1943-5622.0001058
    page04017139
    treeInternational Journal of Geomechanics:;2018:;Volume ( 018 ):;issue: 002
    contenttypeFulltext
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