Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage
Dynamic compaction (DC) is commonly used to strengthen the coarse grained soil foundation, where particle breakage of coarse soils is unavoidable under high-energy impacts. In this paper, a novel method of modeling DC progress was developed, which can realize particle breakage by impact stress. A pa...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/1838370 |
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| _version_ | 1832559922198347776 |
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| author | Xi Li Jing Li Xinyan Ma Jidong Teng Sheng Zhang |
| author_facet | Xi Li Jing Li Xinyan Ma Jidong Teng Sheng Zhang |
| author_sort | Xi Li |
| collection | DOAJ |
| description | Dynamic compaction (DC) is commonly used to strengthen the coarse grained soil foundation, where particle breakage of coarse soils is unavoidable under high-energy impacts. In this paper, a novel method of modeling DC progress was developed, which can realize particle breakage by impact stress. A particle failure criterion of critical stress is first employed. The “population balance” between particles before and after crushing is guaranteed by the overlapping method. The performance of the DC model is successfully validated against literature data. A series of DC tests were then carried out. The effect of particle breakage on key parameters of DC including crater depth and impact stress was discussed. Besides, it is observed that the relationship between breakage amount and tamping times can be expressed by a logarithmic curve. The present method will contribute to a better understanding of DC and benefit further research on the macro-micro mechanism of DC. |
| format | Article |
| id | doaj-art-a190baca99314503b566c28df349ac72 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a190baca99314503b566c28df349ac722025-02-03T01:28:51ZengWileyAdvances in Civil Engineering1687-80861687-80942018-01-01201810.1155/2018/18383701838370Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle BreakageXi Li0Jing Li1Xinyan Ma2Jidong Teng3Sheng Zhang4School of Civil Engineering, Central South University, Changsha, Hunan 410075, ChinaSchool of Civil Engineering, Central South University, Changsha, Hunan 410075, ChinaChina Airport Construction Group Corporation, Beijing 100101, ChinaSchool of Civil Engineering, Central South University, Changsha, Hunan 410075, ChinaSchool of Civil Engineering, Central South University, Changsha, Hunan 410075, ChinaDynamic compaction (DC) is commonly used to strengthen the coarse grained soil foundation, where particle breakage of coarse soils is unavoidable under high-energy impacts. In this paper, a novel method of modeling DC progress was developed, which can realize particle breakage by impact stress. A particle failure criterion of critical stress is first employed. The “population balance” between particles before and after crushing is guaranteed by the overlapping method. The performance of the DC model is successfully validated against literature data. A series of DC tests were then carried out. The effect of particle breakage on key parameters of DC including crater depth and impact stress was discussed. Besides, it is observed that the relationship between breakage amount and tamping times can be expressed by a logarithmic curve. The present method will contribute to a better understanding of DC and benefit further research on the macro-micro mechanism of DC.http://dx.doi.org/10.1155/2018/1838370 |
| spellingShingle | Xi Li Jing Li Xinyan Ma Jidong Teng Sheng Zhang Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage Advances in Civil Engineering |
| title | Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage |
| title_full | Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage |
| title_fullStr | Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage |
| title_full_unstemmed | Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage |
| title_short | Numerical Study of the Dynamic Compaction Process considering the Phenomenon of Particle Breakage |
| title_sort | numerical study of the dynamic compaction process considering the phenomenon of particle breakage |
| url | http://dx.doi.org/10.1155/2018/1838370 |
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