Investigation of load transfer mechanisms in granular platforms reinforced by geosynthetics above cavities
| Autor: | Daniel Dias, Laurent Briançon, Minh-Tuan Pham, Abdelkader Abdelouhab |
|---|---|
| Přispěvatelé: | Géomécanique, Matériaux et Structures (GEOMAS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA), Laboratoire sols, solides, structures - risques [Grenoble] (3SR ), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Ho Chi Minh City University of Technology (HCMUT), Groupe de Recherche en Géomécanique (GRG), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées de Lyon (INSA Lyon), GéoMécanique, Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), MDB Texinov (MDB Texinov), MDB Texinov, ANR-15-LCV3-0003,PITAGOR,Plateforme d'Innovations Technologiques Appliquées aux Géosynthétiques des Ouvrages Renforcés(2015) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Physical modeling
021110 strategic defence & security studies Materials science business.industry Cavity [SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique 0211 other engineering and technologies 02 engineering and technology Soil arching Structural engineering Geosynthetics Geotechnical Engineering and Engineering Geology Pressure sensor Deflection (engineering) General Materials Science Soil properties business Tactile pressure sensors 021101 geological & geomatics engineering Civil and Structural Engineering |
| Zdroj: | Geotextiles and Geomembranes Geotextiles and Geomembranes, Elsevier, 2018, 46 (5), pp.611-624. ⟨10.1016/j.geotexmem.2018.04.015⟩ |
| ISSN: | 0266-1144 |
| DOI: | 10.1016/j.geotexmem.2018.04.015⟩ |
| Popis: | International audience; Geosynthetic-reinforced soils constitute an interesting solution for bridging cavities. Many methods have been developed to analyze the stability of soil-geosynthetic-cavity systems, but none of them is able to take into account all the complexities of these mechanisms. Many researchers have assumed mechanisms developed in the reinforced granular platform when cavities appear, such as load transfer and expansion of materials. However, they are not fully understood because many factors can influence the design, such as the cavity opening processes, the type, and the density of the soil.In this study, a new laboratory apparatus is developed to simulate two different cavity opening procedures (trapdoor and progressive opening) for different geometric configurations. A series of tests is conducted for three granular soils with two different geosynthetic sheets. By measuring the shape of the surface soil settlement and the geosynthetic deflection, the expansion coefficient is calculated. A novel tactile pressure sensor is used to observe the load transfer during the cavity opening. The experimental data are analyzed and the influence of the experimental conditions (geometric and soil properties and the opening procedure) are also discussed. Correspondingly, elicited findings can be used to propose recommendations to improve the existing design methods. |
| Databáze: | OpenAIRE |
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