Discrete Simulation of Vibratory Roller Compaction of Field Rockfills
Vibratory roller compaction is a well-known method in improving the mechanical properties of field rockfills. However, the meso mechanism of rockfill densification under vibratory roller compaction has not been understood clearly. This paper presents a discrete numerical method to simulate the vibra...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/9246947 |
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| _version_ | 1832552512049119232 |
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| author | Yang Li Chengxue She |
| author_facet | Yang Li Chengxue She |
| author_sort | Yang Li |
| collection | DOAJ |
| description | Vibratory roller compaction is a well-known method in improving the mechanical properties of field rockfills. However, the meso mechanism of rockfill densification under vibratory roller compaction has not been understood clearly. This paper presents a discrete numerical method to simulate the vibratory roller compaction of field rockfills. Firstly, rockfill particles were modeled by irregular and stochastic clusters, which can be breakable. In addition, the segregation of field rockfills was replicated in a practical manner. Then, a new model of the vibratory roller was presented, in which the frame inertia was considered. Finally, the developed method was applied to simulate the vibratory roller compaction of field rockfills in the Shui Buya Project. Results show that (1) the numerical simulations of vibratory roller compaction of field rockfills agree well with the field experiments; thus, the feasibility and rationality of the developed simulation method are verified; (2) the dynamic response of field rockfills under vibratory roller compaction can be predicted by the presented numerical method with calibrated model and parameters; (3) the new roller model with frame inertia considered is much more accurate than the roller models in early studies. Thus, the developed discrete numerical method can be further adopted to explore the meso mechanism of rockfill densification under vibratory roller compaction in the future. |
| format | Article |
| id | doaj-art-80215d06bee649d195f8384747e1630f |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-80215d06bee649d195f8384747e1630f2025-02-03T05:58:30ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/92469479246947Discrete Simulation of Vibratory Roller Compaction of Field RockfillsYang Li0Chengxue She1State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaState Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, ChinaVibratory roller compaction is a well-known method in improving the mechanical properties of field rockfills. However, the meso mechanism of rockfill densification under vibratory roller compaction has not been understood clearly. This paper presents a discrete numerical method to simulate the vibratory roller compaction of field rockfills. Firstly, rockfill particles were modeled by irregular and stochastic clusters, which can be breakable. In addition, the segregation of field rockfills was replicated in a practical manner. Then, a new model of the vibratory roller was presented, in which the frame inertia was considered. Finally, the developed method was applied to simulate the vibratory roller compaction of field rockfills in the Shui Buya Project. Results show that (1) the numerical simulations of vibratory roller compaction of field rockfills agree well with the field experiments; thus, the feasibility and rationality of the developed simulation method are verified; (2) the dynamic response of field rockfills under vibratory roller compaction can be predicted by the presented numerical method with calibrated model and parameters; (3) the new roller model with frame inertia considered is much more accurate than the roller models in early studies. Thus, the developed discrete numerical method can be further adopted to explore the meso mechanism of rockfill densification under vibratory roller compaction in the future.http://dx.doi.org/10.1155/2021/9246947 |
| spellingShingle | Yang Li Chengxue She Discrete Simulation of Vibratory Roller Compaction of Field Rockfills Shock and Vibration |
| title | Discrete Simulation of Vibratory Roller Compaction of Field Rockfills |
| title_full | Discrete Simulation of Vibratory Roller Compaction of Field Rockfills |
| title_fullStr | Discrete Simulation of Vibratory Roller Compaction of Field Rockfills |
| title_full_unstemmed | Discrete Simulation of Vibratory Roller Compaction of Field Rockfills |
| title_short | Discrete Simulation of Vibratory Roller Compaction of Field Rockfills |
| title_sort | discrete simulation of vibratory roller compaction of field rockfills |
| url | http://dx.doi.org/10.1155/2021/9246947 |
| work_keys_str_mv | AT yangli discretesimulationofvibratoryrollercompactionoffieldrockfills AT chengxueshe discretesimulationofvibratoryrollercompactionoffieldrockfills |