Upper bound seismic limit analysis of geosynthetic-reinforced unsaturated soil walls
| Autor: | F. Hage Chehade, H. Alhajj Chehade, Orianne Jenck, Daniel Dias, Marwan Sadek |
|---|---|
| Přispěvatelé: | Laboratoire de Génie civil et Géo-environnement (LGCgE), Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Lille Douai), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Lille-Université d'Artois (UA)-Université catholique de Lille (UCL)-École polytechnique universitaire de Lille (Polytech Lille), Laboratoire sols, solides, structures - risques [Grenoble] (3SR), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Université d'Artois (UA)-École polytechnique universitaire de Lille (Polytech Lille)-Université de Lille-Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Lille Douai), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Yncréa Hauts-de-France, Université catholique de Lille (UCL)-Université catholique de Lille (UCL) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Suction
Water table 010102 general mathematics Seismic loading [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique 0211 other engineering and technologies Soil classification 02 engineering and technology Geotechnical Engineering and Engineering Geology 01 natural sciences 6. Clean water Shear strength (soil) Limit analysis Soil water General Materials Science Geotechnical engineering 0101 mathematics Geology Groundwater ComputingMilieux_MISCELLANEOUS 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Geotextiles and Geomembranes Geotextiles and Geomembranes, Elsevier, 2020, 48 (4), pp.419-430. ⟨10.1016/j.geotexmem.2020.02.001⟩ Geotextiles and Geomembranes, 2020, 48 (4), pp.419-430. ⟨10.1016/j.geotexmem.2020.02.001⟩ |
| ISSN: | 0266-1144 |
| DOI: | 10.1016/j.geotexmem.2020.02.001⟩ |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect