| Numerical Analysis of Soil Plug Inside Suction Foundations During Suction Penetration by Discrete Element Method |
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| 作者姓名： | 杜杰 丁红岩 张浦阳 张超 |
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| 作者单位： | School of Civil Engineering, Tianjin University, Tianjin 300072, China |
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| 基金项目： | Supported by National Natural Science Foundation of China （ No. 50079016）. |
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| 摘 要： | The phenomenon of the soil plug usually rising inside the suction foundations during suction penetration was quantitatively described and predicted. The formation process of the soil plug was simulated and calculated by DEM （discrete element method） model. The seepage flow, the self-weight of soil, the friction on the chamber wall as well as the suction inside the chamber are considered as the main external forces in the process. The results are compared with a set of laboratory model tests performed by using three soil types （sand, silty clay and clay） in the Bohai Sea area. The heights of soil plug from numerical estimations are lower than those from model test results, mainly because the suction pressure and friction resistance are applied in an ideal way under the numerical simulation.
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| 关 键 词： | 虹吸式基础 土坝 渗流 闸墙 离散元法 |
| 收稿时间： | 2005-08-22 |
Numerical Analysis of Soil Plug Inside Suction Foundations During Suction Penetration by Discrete Element Method |
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| DU Jie,DING Hongyan,ZHANG Puyang,ZHANG Chao.Numerical Analysis of Soil Plug Inside Suction Foundations During Suction Penetration by Discrete Element Method[J].Transactions of Tianjin University,2006,12(1):61-65. |
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| Authors: | DU Jie DING Hongyan ZHANG Puyang ZHANG Chao |
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| Abstract: | The phenomenon of the soil plug usually rising inside the suction foundations during suction penetration was quantitatively described and predicted. The formation process of the soil plug was simulated and calculated by DEM ( discrete element method) model. The seepage flow, the self-weight of soil, the friction on the chamber wall as well as the suction inside the chamber are considered as the main external forces in the process. The results are compared with a set of laboratory model tests performed by using three soil types (sand, silty clay and clay) in the Bohai Sea area. The heights of soil plug from numerical estimations are lower than those from model test results, mainly because the suction pressure and friction resistance are applied in an ideal way under the numerical simulation. |
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| Keywords: | suction foundation soil plug discrete element method (DEM) seepage flow |
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