Upper bound seismic limit analysis of geosynthetic-reinforced unsaturated soil walls.
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| Title: | Upper bound seismic limit analysis of geosynthetic-reinforced unsaturated soil walls. |
|---|---|
| Authors: | Alhajj Chehade, H.1,2 (AUTHOR) hicham.alhajjchehade@3sr-grenoble.fr, Dias, D.1,3,4 (AUTHOR) daniel.dias@anteagroup.com, Sadek, M.2 (AUTHOR) marwan.sadek@ul.edu.lb, Jenck, O.1 (AUTHOR) orianne.jenck@3sr-grenoble.fr, Hage Chehade, F.2 (AUTHOR) fchehade@ul.edu.lb |
| Source: | Geotextiles & Geomembranes. Aug2020, Vol. 48 Issue 4, p419-430. 12p. |
| Subjects: | Reinforced soils, Retaining walls, Shear strength of soils, Soil classification, Water table, Soils |
| Abstract: | The assessment of the internal stability of geosynthetic-reinforced earth retaining walls has historically been investigated in previous studies assuming dry backfills. However, the majority of the failures of these structures are caused by the water presence. The studies including the water presence in the backfill are scarce and often consider saturated backfills. In reality, most soils are unsaturated in nature and the matric suction plays an important role in the wall's stability. This paper investigates the internal seismic stability of geosynthetic-reinforced unsaturated earth retaining walls. The groundwater level can be located at any reinforced backfill depth. Several nonlinear equations relating the unsaturated soil shear strength to the matric suction and different backfill type of soils are considered in this study. The log-spiral failure mechanism generated by the point-to-point method is considered. The upper-bound theorem of the limit analysis is used to evaluate the strength required to maintain the reinforced soil walls stability and the seismic loading are represented by the pseudo-dynamic approach. A parametric study showed that the required reinforcement strength is influenced by several parameters such as the soil friction angle, the horizontal seismic coefficient, the water table level, the matric suction distribution as well as the soil types and the unsaturated soils shear strength. [ABSTRACT FROM AUTHOR] |
| Copyright of Geotextiles & Geomembranes 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 |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 143173156 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Upper bound seismic limit analysis of geosynthetic-reinforced unsaturated soil walls. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Alhajj+Chehade%2C+H%2E%22">Alhajj Chehade, H.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> hicham.alhajjchehade@3sr-grenoble.fr</i><br /><searchLink fieldCode="AR" term="%22Dias%2C+D%2E%22">Dias, D.</searchLink><relatesTo>1,3,4</relatesTo> (AUTHOR)<i> daniel.dias@anteagroup.com</i><br /><searchLink fieldCode="AR" term="%22Sadek%2C+M%2E%22">Sadek, M.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> marwan.sadek@ul.edu.lb</i><br /><searchLink fieldCode="AR" term="%22Jenck%2C+O%2E%22">Jenck, O.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> orianne.jenck@3sr-grenoble.fr</i><br /><searchLink fieldCode="AR" term="%22Hage+Chehade%2C+F%2E%22">Hage Chehade, F.</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> fchehade@ul.edu.lb</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Geotextiles+%26+Geomembranes%22">Geotextiles & Geomembranes</searchLink>. Aug2020, Vol. 48 Issue 4, p419-430. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Reinforced+soils%22">Reinforced soils</searchLink><br /><searchLink fieldCode="DE" term="%22Retaining+walls%22">Retaining walls</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+strength+of+soils%22">Shear strength of soils</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+classification%22">Soil classification</searchLink><br /><searchLink fieldCode="DE" term="%22Water+table%22">Water table</searchLink><br /><searchLink fieldCode="DE" term="%22Soils%22">Soils</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The assessment of the internal stability of geosynthetic-reinforced earth retaining walls has historically been investigated in previous studies assuming dry backfills. However, the majority of the failures of these structures are caused by the water presence. The studies including the water presence in the backfill are scarce and often consider saturated backfills. In reality, most soils are unsaturated in nature and the matric suction plays an important role in the wall's stability. This paper investigates the internal seismic stability of geosynthetic-reinforced unsaturated earth retaining walls. The groundwater level can be located at any reinforced backfill depth. Several nonlinear equations relating the unsaturated soil shear strength to the matric suction and different backfill type of soils are considered in this study. The log-spiral failure mechanism generated by the point-to-point method is considered. The upper-bound theorem of the limit analysis is used to evaluate the strength required to maintain the reinforced soil walls stability and the seismic loading are represented by the pseudo-dynamic approach. A parametric study showed that the required reinforcement strength is influenced by several parameters such as the soil friction angle, the horizontal seismic coefficient, the water table level, the matric suction distribution as well as the soil types and the unsaturated soils shear strength. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Geotextiles & Geomembranes 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.geotexmem.2020.02.001 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 419 Subjects: – SubjectFull: Reinforced soils Type: general – SubjectFull: Retaining walls Type: general – SubjectFull: Shear strength of soils Type: general – SubjectFull: Soil classification Type: general – SubjectFull: Water table Type: general – SubjectFull: Soils Type: general Titles: – TitleFull: Upper bound seismic limit analysis of geosynthetic-reinforced unsaturated soil walls. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Alhajj Chehade, H. – PersonEntity: Name: NameFull: Dias, D. – PersonEntity: Name: NameFull: Sadek, M. – PersonEntity: Name: NameFull: Jenck, O. – PersonEntity: Name: NameFull: Hage Chehade, F. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 02661144 Numbering: – Type: volume Value: 48 – Type: issue Value: 4 Titles: – TitleFull: Geotextiles & Geomembranes Type: main |
| ResultId | 1 |
