| 碾压混凝土层面抗剪强度的细观数值研究 |
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| 引用本文： | 彭一江,黎保琨,屈彦玲. 碾压混凝土层面抗剪强度的细观数值研究[J]. 中国安全科学学报, 2004, 14(3): 84-87 |
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| 作者姓名： | 彭一江 黎保琨 屈彦玲 |
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| 作者单位： | 1. 北京交通大学力学研究所;北京工业大学水利水电学科部
2. 北京工业大学水利水电学科部 |
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| 基金项目： | 水利部水利技术开发基金资助 (SJ970 1 ) |
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| 摘 要： | 碾压混凝土 (RCC)层面抗剪强度关系到碾压混凝土坝的安全。笔者采用随机骨料模型模拟碾压混凝土的细观结构 ,利用有限元方法数值模拟碾压混凝土试件的细观损伤断裂和抗剪强度 ,将所得数值结果与混凝土重力坝设计规范参考值比较 ,结果较为吻合。同时对直剪试验尺寸效应进行研究 ,并给出提高层面抗剪能力的措施。
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| 关 键 词： | 碾压混凝土(RCC) 砂浆层面 抗剪强度 直剪试验 细观层次 数值模拟 |
| 修稿时间： | 2003-07-01 |
Numerical Study of the Shear Strength of Matrix Layer in Rolled Compact Concrete on Meso-Level |
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| PENG Yi jiang ,,Assoc.Prof. LI Bao kun ,Prof. QU Yan ling. Numerical Study of the Shear Strength of Matrix Layer in Rolled Compact Concrete on Meso-Level[J]. China Safety Science Journal, 2004, 14(3): 84-87 |
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| Authors: | PENG Yi jiang Assoc.Prof. LI Bao kun Prof. QU Yan ling |
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| Affiliation: | PENG Yi jiang 1,2,Assoc.Prof. LI Bao kun 2,Prof. QU Yan ling 2 |
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| Abstract: | The shear strength of matrix layer in rolled compact concrete (RCC) provides important effect to the safety of RCC dam. The random aggregate model was used to simulate the structure of RCC. The extension of cracks and the mechanic properties of RCC in shear test were simulated using finite element method. The simulation results met with the Design Specification and test results. And the size effect on shear strength of RCC was studied also. Finally, the measure to increase the strength of matrix layer was provided. |
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| Keywords: | Rolled compact concrete (RCC) Matrix layer Shear strength Shear test Meso level Numerical simulation |
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