The mechanical behaviour of gap-graded soils under triaxial compression and extension loading paths
Uloženo v:
| Název: | The mechanical behaviour of gap-graded soils under triaxial compression and extension loading paths |
|---|---|
| Autoři: | Adesina, Peter, Wautier, Antoine, Benahmed, Nadia |
| Přispěvatelé: | Serva, Camille |
| Zdroj: | Acta Geotechnica. 20:3811-3834 |
| Informace o vydavateli: | Springer Science and Business Media LLC, 2025. |
| Rok vydání: | 2025 |
| Témata: | Macro-micromechanical behaviour, Triaxial compression/extension, [SPI.GCIV.GEOTECH] Engineering Sciences [physics]/Civil Engineering/Géotechnique, DEM, Gap-graded assemblies |
| Popis: | The influence of mechanical loading paths on the characteristics of gap-graded granular assemblies was investigated using the discrete element method (DEM). Dense and loose gap-graded assemblies with finer fraction content, , ranging from 0–100% were prepared and subjected to drained triaxial compression and extension loading paths. After examining key macroscale quantities, micromechanical analyses were conducted to elicit the particle-scale characteristics including the evolution of the fabric of the assemblies under the different loading paths. The results of the DEM analysis confirm the validity of the Mohr–Coulomb failure criteria at the critical state. While the mobilised friction angle at the peak is higher under extension than in compression, no significant difference was obtained in the critical state friction angle for both loading paths. Despite the higher mean stress transmitted by the gap-graded assemblies under compression in comparison with extension, the contribution of the finer particles to the total mean stress is not significantly influenced by the loading paths. Our data show that the variation in the fabric of granular assemblies under different loading paths does not always stem from an initial inherent anisotropy. Fabric anisotropy is marginally higher under extension than in compression despite having an initial isotropic fabric. |
| Druh dokumentu: | Article |
| Jazyk: | English |
| ISSN: | 1861-1133 1861-1125 |
| DOI: | 10.1007/s11440-025-02600-3 |
| Přístupová URL adresa: | https://hal.inrae.fr/hal-05228338v1 https://doi.org/10.1007/s11440-025-02600-3 |
| Rights: | Springer Nature TDM |
| Přístupové číslo: | edsair.doi.dedup.....6bb68b4cba211111748bde730f0976af |
| Databáze: | OpenAIRE |
Full Text Finder 
Nájsť tento článok vo Web of Science | Abstrakt: | The influence of mechanical loading paths on the characteristics of gap-graded granular assemblies was investigated using the discrete element method (DEM). Dense and loose gap-graded assemblies with finer fraction content, , ranging from 0–100% were prepared and subjected to drained triaxial compression and extension loading paths. After examining key macroscale quantities, micromechanical analyses were conducted to elicit the particle-scale characteristics including the evolution of the fabric of the assemblies under the different loading paths. The results of the DEM analysis confirm the validity of the Mohr–Coulomb failure criteria at the critical state. While the mobilised friction angle at the peak is higher under extension than in compression, no significant difference was obtained in the critical state friction angle for both loading paths. Despite the higher mean stress transmitted by the gap-graded assemblies under compression in comparison with extension, the contribution of the finer particles to the total mean stress is not significantly influenced by the loading paths. Our data show that the variation in the fabric of granular assemblies under different loading paths does not always stem from an initial inherent anisotropy. Fabric anisotropy is marginally higher under extension than in compression despite having an initial isotropic fabric. |
|---|---|
| ISSN: | 18611133 18611125 |
| DOI: | 10.1007/s11440-025-02600-3 |