Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading
This study aims to examine the deformation behavior and internal mechanism of coarse-grained soil as an embankment filler under cyclic loading. Numerical dynamic triaxial tests were performed on coarse-grained soil using the discrete element software PFC3D. The numerical model was verified by compar...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/4629105 |
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| _version_ | 1832567288636637184 |
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| author | Zhong-Ming He Da Xiang Ya-Xin Liu Qian-Feng Gao Han-Bing Bian |
| author_facet | Zhong-Ming He Da Xiang Ya-Xin Liu Qian-Feng Gao Han-Bing Bian |
| author_sort | Zhong-Ming He |
| collection | DOAJ |
| description | This study aims to examine the deformation behavior and internal mechanism of coarse-grained soil as an embankment filler under cyclic loading. Numerical dynamic triaxial tests were performed on coarse-grained soil using the discrete element software PFC3D. The numerical model was verified by comparing the numerical results with the experimental data. Afterward, the changes in the porosity, force chain, and particle movement of coarse-grained soil samples were analyzed, and the mesoscopic deformation behavior of coarse-grained soil under cyclic loading was investigated. The research results show that with the increase of the deviatoric stress amplitude, moisture content, and loading frequency, the deformation of the soil increases and the ability to resist deformation decreases at the same loading cycles. Due to the inhomogeneous distribution of particles with different sizes, the velocity and displacement of the sample vary in different directions, exhibiting mesoscopic anisotropy. The contact force is relatively even in the downward direction while dispersed near the edge of the sample. This means that the particles at the bottom are less affected by loads and the internal evolution of soil samples conforms to its macroscopic deformation behavior during cyclic loading. |
| format | Article |
| id | doaj-art-15f972657a6840668cd196a8fb5c9f81 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-15f972657a6840668cd196a8fb5c9f812025-02-03T01:01:52ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/46291054629105Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic LoadingZhong-Ming He0Da Xiang1Ya-Xin Liu2Qian-Feng Gao3Han-Bing Bian4Road Catastrophe Prevention and Traffic Safety Engineering Research Center of Ministry of Education, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaSchool of Traffic & Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaLaboratory of Civil Engineering and Geo-Environment, University of Lille, Lille 59000, FranceThis study aims to examine the deformation behavior and internal mechanism of coarse-grained soil as an embankment filler under cyclic loading. Numerical dynamic triaxial tests were performed on coarse-grained soil using the discrete element software PFC3D. The numerical model was verified by comparing the numerical results with the experimental data. Afterward, the changes in the porosity, force chain, and particle movement of coarse-grained soil samples were analyzed, and the mesoscopic deformation behavior of coarse-grained soil under cyclic loading was investigated. The research results show that with the increase of the deviatoric stress amplitude, moisture content, and loading frequency, the deformation of the soil increases and the ability to resist deformation decreases at the same loading cycles. Due to the inhomogeneous distribution of particles with different sizes, the velocity and displacement of the sample vary in different directions, exhibiting mesoscopic anisotropy. The contact force is relatively even in the downward direction while dispersed near the edge of the sample. This means that the particles at the bottom are less affected by loads and the internal evolution of soil samples conforms to its macroscopic deformation behavior during cyclic loading.http://dx.doi.org/10.1155/2020/4629105 |
| spellingShingle | Zhong-Ming He Da Xiang Ya-Xin Liu Qian-Feng Gao Han-Bing Bian Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading Advances in Civil Engineering |
| title | Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading |
| title_full | Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading |
| title_fullStr | Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading |
| title_full_unstemmed | Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading |
| title_short | Deformation Behavior of Coarse-Grained Soil as an Embankment Filler under Cyclic Loading |
| title_sort | deformation behavior of coarse grained soil as an embankment filler under cyclic loading |
| url | http://dx.doi.org/10.1155/2020/4629105 |
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