Non-coaxiality of soft clay generated by principal stress rotation under high-speed train loading.
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| Title: | Non-coaxiality of soft clay generated by principal stress rotation under high-speed train loading. |
|---|---|
| Authors: | Shen, Yang1 (AUTHOR), Du, Wenhan2 (AUTHOR) wenhandu2011@outlook.com, Xu, Junhong3 (AUTHOR), Rui, Xiaoxi1 (AUTHOR), Liu, Hanlong4 (AUTHOR) |
| Source: | Acta Geotechnica. Feb2022, Vol. 17 Issue 2, p411-426. 16p. |
| Subjects: | High speed trains, Soil mechanics, Clay soils, Clay, Cyclic loads, Dynamic testing, Rotational motion |
| Abstract: | Plenty of geomechanics tests and theories have confirmed the existence of non-coaxiality while soil is subjected to principal stress rotation. This paper investigated the influence of one particular principal stress path, which is a 'heart-shape' stress path that is normally induced by high-speed train loading, on the non-coaxiality of reconstituted soft clay. Hollow cylinder apparatus was employed to carry out series of undrained dynamic tests. The goals of this study were to (1) reveal the essential factors of complex cyclic loading paths that influence non-coaxiality in clayey soil and (2) quantify the influence of the factors on variation in non-coaxiality under the high-speed training loading. To analyze the non-coaxiality under high-speed train loading, (a) the pure rotation stress path was utilized as comparison for underling the different influence that 'heart-shape' stress path has from other conventional cyclic stress paths. (b) Two variables, dynamic stress ratio and tension–compression amplitude ratio, were introduced in analyzing the evolution of the non-coaxial angle. (c) Based on the test results, equations for describing the revolution of non-coaxiality were proposed which can help to describe the variation in non-coaxial angle under complex loadings quantitatively and understand the influence of the major factors of the stress path intensively. [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: 155381580 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Non-coaxiality of soft clay generated by principal stress rotation under high-speed train loading. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Shen%2C+Yang%22">Shen, Yang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Du%2C+Wenhan%22">Du, Wenhan</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> wenhandu2011@outlook.com</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+Junhong%22">Xu, Junhong</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Rui%2C+Xiaoxi%22">Rui, Xiaoxi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Hanlong%22">Liu, Hanlong</searchLink><relatesTo>4</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Feb2022, Vol. 17 Issue 2, p411-426. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22High+speed+trains%22">High speed trains</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+mechanics%22">Soil mechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Clay+soils%22">Clay soils</searchLink><br /><searchLink fieldCode="DE" term="%22Clay%22">Clay</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclic+loads%22">Cyclic loads</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamic+testing%22">Dynamic testing</searchLink><br /><searchLink fieldCode="DE" term="%22Rotational+motion%22">Rotational motion</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Plenty of geomechanics tests and theories have confirmed the existence of non-coaxiality while soil is subjected to principal stress rotation. This paper investigated the influence of one particular principal stress path, which is a 'heart-shape' stress path that is normally induced by high-speed train loading, on the non-coaxiality of reconstituted soft clay. Hollow cylinder apparatus was employed to carry out series of undrained dynamic tests. The goals of this study were to (1) reveal the essential factors of complex cyclic loading paths that influence non-coaxiality in clayey soil and (2) quantify the influence of the factors on variation in non-coaxiality under the high-speed training loading. To analyze the non-coaxiality under high-speed train loading, (a) the pure rotation stress path was utilized as comparison for underling the different influence that 'heart-shape' stress path has from other conventional cyclic stress paths. (b) Two variables, dynamic stress ratio and tension–compression amplitude ratio, were introduced in analyzing the evolution of the non-coaxial angle. (c) Based on the test results, equations for describing the revolution of non-coaxiality were proposed which can help to describe the variation in non-coaxial angle under complex loadings quantitatively and understand the influence of the major factors of the stress path intensively. [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/s11440-021-01242-5 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 411 Subjects: – SubjectFull: High speed trains Type: general – SubjectFull: Soil mechanics Type: general – SubjectFull: Clay soils Type: general – SubjectFull: Clay Type: general – SubjectFull: Cyclic loads Type: general – SubjectFull: Dynamic testing Type: general – SubjectFull: Rotational motion Type: general Titles: – TitleFull: Non-coaxiality of soft clay generated by principal stress rotation under high-speed train loading. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Shen, Yang – PersonEntity: Name: NameFull: Du, Wenhan – PersonEntity: Name: NameFull: Xu, Junhong – PersonEntity: Name: NameFull: Rui, Xiaoxi – PersonEntity: Name: NameFull: Liu, Hanlong IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 17 – Type: issue Value: 2 Titles: – TitleFull: Acta Geotechnica Type: main |
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