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Analysis of cylindrical cavity expansion in anisotropic overconsolidated clays using the Extended UH model.

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Title: Analysis of cylindrical cavity expansion in anisotropic overconsolidated clays using the Extended UH model.
Authors: Chen, Haohua1,2 (AUTHOR) howardchen@email.arizona.edu, Feng, Ce1 (AUTHOR) fengce@tongji.edu.cn, Li, Jingpei1 (AUTHOR) lijp2773@tongji.edu.cn, Sun, De'an3 (AUTHOR)
Source: Computers & Geotechnics. Jun2021, Vol. 134, pN.PAG-N.PAG. 1p.
Subjects: Ordinary differential equations, Clay, Differential forms, Lagrange equations, Anisotropic crystals
Abstract: [Display omitted] Anisotropy and overconsolidation are two important features of depositional clay and are not comprehensively addressed in current cavity expansion solutions. Aiming at better modeling the cavity expansion responses in the natural soils, this paper develops a novel and rigorous elastoplastic semi-analytical solution by implementing the advanced anisotropic unified hardening (UH) model in conjunction with incorporating the anisotropic SMP criterion. The novel incorporation of the anisotropic SMP criterion and the proper consideration of overconsolidated properties are the major contributions of the present solution. By utilizing the anisotropic stress transformation method, the initial stress-induced anisotropy, anisotropic yielding and anisotropic failure of soil are also incorporated into the proposed solution. Following the derived constitutive equations in incremental form and large strain theory, both undrained and the drained cases are reduced to boundary-value problems consisting of several first-order ordinary differential equations formed in the Lagrangian scheme. Detailed parametric analyses are presented and compared with other existing solutions to investigate the effects of anisotropy and initial overconsolidation on the cavity responses. The present solution could properly capture the cross-anisotropy and 3D strength of overconsolidated soil and hence provides a more advanced and generic approach for modeling the cavity expansion responses in wide ranges of soils. [ABSTRACT FROM AUTHOR]
Copyright of Computers & Geotechnics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 150085115
AccessLevel: 6
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PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Analysis of cylindrical cavity expansion in anisotropic overconsolidated clays using the Extended UH model.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Haohua%22">Chen, Haohua</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> howardchen@email.arizona.edu</i><br /><searchLink fieldCode="AR" term="%22Feng%2C+Ce%22">Feng, Ce</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fengce@tongji.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Jingpei%22">Li, Jingpei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lijp2773@tongji.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Sun%2C+De'an%22">Sun, De'an</searchLink><relatesTo>3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Computers+%26+Geotechnics%22">Computers & Geotechnics</searchLink>. Jun2021, Vol. 134, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Ordinary+differential+equations%22">Ordinary differential equations</searchLink><br /><searchLink fieldCode="DE" term="%22Clay%22">Clay</searchLink><br /><searchLink fieldCode="DE" term="%22Differential+forms%22">Differential forms</searchLink><br /><searchLink fieldCode="DE" term="%22Lagrange+equations%22">Lagrange equations</searchLink><br /><searchLink fieldCode="DE" term="%22Anisotropic+crystals%22">Anisotropic crystals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: [Display omitted] Anisotropy and overconsolidation are two important features of depositional clay and are not comprehensively addressed in current cavity expansion solutions. Aiming at better modeling the cavity expansion responses in the natural soils, this paper develops a novel and rigorous elastoplastic semi-analytical solution by implementing the advanced anisotropic unified hardening (UH) model in conjunction with incorporating the anisotropic SMP criterion. The novel incorporation of the anisotropic SMP criterion and the proper consideration of overconsolidated properties are the major contributions of the present solution. By utilizing the anisotropic stress transformation method, the initial stress-induced anisotropy, anisotropic yielding and anisotropic failure of soil are also incorporated into the proposed solution. Following the derived constitutive equations in incremental form and large strain theory, both undrained and the drained cases are reduced to boundary-value problems consisting of several first-order ordinary differential equations formed in the Lagrangian scheme. Detailed parametric analyses are presented and compared with other existing solutions to investigate the effects of anisotropy and initial overconsolidation on the cavity responses. The present solution could properly capture the cross-anisotropy and 3D strength of overconsolidated soil and hence provides a more advanced and generic approach for modeling the cavity expansion responses in wide ranges of soils. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Computers & Geotechnics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.compgeo.2021.104114
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Ordinary differential equations
        Type: general
      – SubjectFull: Clay
        Type: general
      – SubjectFull: Differential forms
        Type: general
      – SubjectFull: Lagrange equations
        Type: general
      – SubjectFull: Anisotropic crystals
        Type: general
    Titles:
      – TitleFull: Analysis of cylindrical cavity expansion in anisotropic overconsolidated clays using the Extended UH model.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Chen, Haohua
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          Name:
            NameFull: Feng, Ce
      – PersonEntity:
          Name:
            NameFull: Li, Jingpei
      – PersonEntity:
          Name:
            NameFull: Sun, De'an
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      – BibEntity:
          Dates:
            – D: 01
              M: 06
              Text: Jun2021
              Type: published
              Y: 2021
          Identifiers:
            – Type: issn-print
              Value: 0266352X
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            – Type: volume
              Value: 134
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            – TitleFull: Computers & Geotechnics
              Type: main
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