Constitutive model for soil-rock mixtures in the light of an updated skeleton void ratio concept
| Autor: | Tao Wang, Sihong Liu, Antoine Wautier, François Nicot |
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| Přispěvatelé: | Hohai University, Erosion torrentielle neige et avalanches (UR ETGR (ETNA)), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER), Aix Marseille Université (AMU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Environnements, Dynamiques et Territoires de Montagne (EDYTEM), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), National Natural Science Foundation of China (Grant No.343 U1765205 and No. 51979091), Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)), Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF), This work was supported by National Natural Science Foundation of China (Grant No. U1765205 and No. 51979091). |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Flow rule direction
[SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique [SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] Geotechnical Engineering and Engineering Geology Critical state line Soil content Constitutive modelling Non-associated behavior Soil-rock mixture Constitutive modeling Earth and Planetary Sciences (miscellaneous) [SDV.IB]Life Sciences [q-bio]/Bioengineering Skeleton void ratio ZABR |
| Zdroj: | Acta Geotechnica Acta Geotechnica, 2023, 18, pp.2991-3003. ⟨10.1007/s11440-022-01756-6⟩ |
| ISSN: | 1861-1125 1861-1133 |
| DOI: | 10.1007/s11440-022-01756-6⟩ |
| Popis: | International audience; As a type of special geological body, soil-rock mixtures (SRMs) are widely found in nature and used in civil engineering. Many structures, such as rockfill dams, highways and tunnels, have used SRMs as building materials. Proper modeling of SRMs is of great importance to capture the complex behavior of this heterogeneous material. In this manuscript, a simple constitutive model incorporating the skeleton void ratio concept is proposed for SRMs with varying soil contents (sc). A prominent feature of the model is a unified description of the behavior of SRMs with varying sc such that only model parameters of pure rock and of pure soil are required. After calibration, the model shows a good capacity to predict the stress-strain response of SRMs under a wide range of sc, void ratios, and confining pressures. In particular, it captures well the non-associated behavior of rock-dominated SRMs with different sc. Furthermore, the sc-value is shown to modify the plastic flow direction of the material without influencing its yield surface. |
| Databáze: | OpenAIRE |
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