Modeling footing resting on anisotropic sand using material point method
Sand typically exhibits anisotropic internal structure which may significantly influence its mechanical behavior. The material point method (MPM) can eliminate mesh distortion and thus is suitable for investigating geotechnical problems with large deformation. In this study, an advanced anisotropic...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Journal of Rock Mechanics and Geotechnical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674775523000616 |
| _version_ | 1797430028661686272 |
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| author | Liu Gao Dong Liao Pin-Qiang Mo |
| author_facet | Liu Gao Dong Liao Pin-Qiang Mo |
| author_sort | Liu Gao |
| collection | DOAJ |
| description | Sand typically exhibits anisotropic internal structure which may significantly influence its mechanical behavior. The material point method (MPM) can eliminate mesh distortion and thus is suitable for investigating geotechnical problems with large deformation. In this study, an advanced anisotropic critical state theory (ACST)-based soil model is implemented in MPM to study the response of strip footing resting on anisotropic sand. The capability of the model is verified by simulating several element tests and strip footing tests with different soil densities and fabric bedding plane orientations. For the footing problem with a vertical load, as the fabric bedding plane orientation increases, the bearing capacity decreases and its corresponding settlement increases. The failure pattern becomes asymmetrical when the bedding plane orientation or the loading direction is inclined. A comparison between the simulation results predicted by the anisotropic and isotropic models is made, which demonstrates that neglecting the fabric anisotropy may lead to the overestimation of the bearing capacity. |
| first_indexed | 2024-03-09T09:21:45Z |
| format | Article |
| id | doaj.art-0961f4b86d0543288b18e8c1f6b5abcf |
| institution | Directory Open Access Journal |
| issn | 1674-7755 |
| language | English |
| last_indexed | 2024-03-09T09:21:45Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Rock Mechanics and Geotechnical Engineering |
| spelling | doaj.art-0961f4b86d0543288b18e8c1f6b5abcf2023-12-02T06:58:55ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552023-12-01151232713290Modeling footing resting on anisotropic sand using material point methodLiu Gao0Dong Liao1Pin-Qiang Mo2School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, 221116, ChinaSchool of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Corresponding author.School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, 221116, ChinaSand typically exhibits anisotropic internal structure which may significantly influence its mechanical behavior. The material point method (MPM) can eliminate mesh distortion and thus is suitable for investigating geotechnical problems with large deformation. In this study, an advanced anisotropic critical state theory (ACST)-based soil model is implemented in MPM to study the response of strip footing resting on anisotropic sand. The capability of the model is verified by simulating several element tests and strip footing tests with different soil densities and fabric bedding plane orientations. For the footing problem with a vertical load, as the fabric bedding plane orientation increases, the bearing capacity decreases and its corresponding settlement increases. The failure pattern becomes asymmetrical when the bedding plane orientation or the loading direction is inclined. A comparison between the simulation results predicted by the anisotropic and isotropic models is made, which demonstrates that neglecting the fabric anisotropy may lead to the overestimation of the bearing capacity.http://www.sciencedirect.com/science/article/pii/S1674775523000616Material point method (MPM)FootingConstitutive modelAnisotropyInclined loading |
| spellingShingle | Liu Gao Dong Liao Pin-Qiang Mo Modeling footing resting on anisotropic sand using material point method Journal of Rock Mechanics and Geotechnical Engineering Material point method (MPM) Footing Constitutive model Anisotropy Inclined loading |
| title | Modeling footing resting on anisotropic sand using material point method |
| title_full | Modeling footing resting on anisotropic sand using material point method |
| title_fullStr | Modeling footing resting on anisotropic sand using material point method |
| title_full_unstemmed | Modeling footing resting on anisotropic sand using material point method |
| title_short | Modeling footing resting on anisotropic sand using material point method |
| title_sort | modeling footing resting on anisotropic sand using material point method |
| topic | Material point method (MPM) Footing Constitutive model Anisotropy Inclined loading |
| url | http://www.sciencedirect.com/science/article/pii/S1674775523000616 |
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