An anisotropically elastoplastic solution to excavation responses of a circular opening considering three-dimensional strength.
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| Title: | An anisotropically elastoplastic solution to excavation responses of a circular opening considering three-dimensional strength. |
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| Authors: | Chen, Haohua1,2 (AUTHOR) howardchen@email.arizona.edu, Feng, Ce1 (AUTHOR), Li, Jingpei2 (AUTHOR) |
| Source: | Acta Geotechnica. Sep2022, Vol. 17 Issue 9, p3995-4011. 17p. |
| Subjects: | Initial value problems, Earth pressure, Excavation (Civil engineering), Soil particles, Petroleum engineering, Soil mechanics, Clay |
| Abstract: | Circular opening is commonly encountered in wellbore drilling of petroleum engineering, boring for cast-in situ pile installation, and tunneling excavation. This paper presents a rigorous solution for the elastoplastic responses of the anisotropic soft soil mass around a circular opening excavated under undrained and drained conditions. Both the anisotropic elastoplastic behavior and the 3D strength of the soft clay are incorporated in the present solutions. The well-established anisotropic critical state elastoplastic model S-CLAY1, which can represent the initial fabric anisotropy and stress-induced anisotropy of soft soil, is further modified by the Spatially Mobilized Plane criterion to consider the 3D strength of geomaterials. Then, the investigated problems, excavation of a circular opening under both short-term (undrained) and long-term (drained) conditions, are formulated as a system of first-order differential equations and are solved as initial value problems. The distributions of stress components and anisotropy parameters around the opening, the stress trajectory of a soil particle at the opening wall, as well as the stress–displacement curve at the opening wall are presented to investigate the elastoplastic responses of the opening. Extensive parameters show that the overconsolidated ratio and coefficient of earth pressure at rest (K0) have remarkable effects on the elastoplastic responses around a circular opening. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature 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: 159100831 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: An anisotropically elastoplastic solution to excavation responses of a circular opening considering three-dimensional strength. – Name: Author Label: Authors Group: Au 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)<br /><searchLink fieldCode="AR" term="%22Li%2C+Jingpei%22">Li, Jingpei</searchLink><relatesTo>2</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Sep2022, Vol. 17 Issue 9, p3995-4011. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Initial+value+problems%22">Initial value problems</searchLink><br /><searchLink fieldCode="DE" term="%22Earth+pressure%22">Earth pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Excavation+%28Civil+engineering%29%22">Excavation (Civil engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+particles%22">Soil particles</searchLink><br /><searchLink fieldCode="DE" term="%22Petroleum+engineering%22">Petroleum engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+mechanics%22">Soil mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Clay%22">Clay</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Circular opening is commonly encountered in wellbore drilling of petroleum engineering, boring for cast-in situ pile installation, and tunneling excavation. This paper presents a rigorous solution for the elastoplastic responses of the anisotropic soft soil mass around a circular opening excavated under undrained and drained conditions. Both the anisotropic elastoplastic behavior and the 3D strength of the soft clay are incorporated in the present solutions. The well-established anisotropic critical state elastoplastic model S-CLAY1, which can represent the initial fabric anisotropy and stress-induced anisotropy of soft soil, is further modified by the Spatially Mobilized Plane criterion to consider the 3D strength of geomaterials. Then, the investigated problems, excavation of a circular opening under both short-term (undrained) and long-term (drained) conditions, are formulated as a system of first-order differential equations and are solved as initial value problems. The distributions of stress components and anisotropy parameters around the opening, the stress trajectory of a soil particle at the opening wall, as well as the stress–displacement curve at the opening wall are presented to investigate the elastoplastic responses of the opening. Extensive parameters show that the overconsolidated ratio and coefficient of earth pressure at rest (K0) have remarkable effects on the elastoplastic responses around a circular opening. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Geotechnica is the property of Springer Nature 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: 10.1007/s11440-022-01448-1 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 3995 Subjects: – SubjectFull: Initial value problems Type: general – SubjectFull: Earth pressure Type: general – SubjectFull: Excavation (Civil engineering) Type: general – SubjectFull: Soil particles Type: general – SubjectFull: Petroleum engineering Type: general – SubjectFull: Soil mechanics Type: general – SubjectFull: Clay Type: general Titles: – TitleFull: An anisotropically elastoplastic solution to excavation responses of a circular opening considering three-dimensional strength. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chen, Haohua – PersonEntity: Name: NameFull: Feng, Ce – PersonEntity: Name: NameFull: Li, Jingpei IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 17 – Type: issue Value: 9 Titles: – TitleFull: Acta Geotechnica Type: main |
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