| 考虑简化胶结模型的深海能源土宏观力学性质离散元数值模拟分析 |
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| 引用本文： | 肖俞,蒋明镜,孙渝刚.考虑简化胶结模型的深海能源土宏观力学性质离散元数值模拟分析[J].岩土力学,2011,32(Z1):755-0760. |
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| 作者姓名： | 肖俞 蒋明镜 孙渝刚 |
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| 作者单位： | 同济大学土木学院地下建筑与工程系 |
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| 基金项目： | 国家自然科学基金资助(No.10972158);国家杰出青年基金资助(No.51025932) |
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| 摘 要： | 根据蒋明镜等所提出天然结构性砂土微观胶结模型及微观胶结试验结果,将该模型引入离散元商业软件PFC2D,进行能源土双轴试验离散元数值模拟分析,并同Masui等6]能源土三轴试验结果进行对比分析,结果表明,蒋明镜等所提出胶结模型能够较好的模拟水合物的微观胶结力学行为,水合物胶结的存在对能源土强度具有一定的贡献。
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| 关 键 词： | 天然气水合物 能源土 离散元法(DEM) 双轴试验 微观胶结 |
| 收稿时间： | 2010-07-30 |
Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model |
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| XIAO Yu,JIANG Ming-jing,SUN Yu-gang.Numerical simulation of macromechanical properties of deep-sea energy soil by discrete element method under simplified bond model[J].Rock and Soil Mechanics,2011,32(Z1):755-0760. |
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| Authors: | XIAO Yu JIANG Ming-jing SUN Yu-gang |
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| Institution: | 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China |
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| Abstract: | A micro-bond contact model1–2] proposed and verified by Jiang3–5] et al. is incorporated into PFC2D developed by Itasca. Then biaxial test is carried out to simulate the mechanical properties of deep-sea energy soil; and comparison analysis with the triaxial test done by Masui 6] et al. is done. The results show that the macromechanical properties of deep-sea energy soil and the influence of gas hydrate can be reflected through the micro-bond contact proposed by Jiang 1, 2] et al.; and the existence of gas hydrate has some contribution to the strength of deep-sea energy soil. |
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| Keywords: | gas hydrate energy soil discrete element method biaxial test micro-bond |
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