| 柱状节理坝基岩体三维各向异性数值分析 |
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| 引用本文： | 徐卫亚,郑文棠,宁宇,孟国涛,吴关叶,石安池.柱状节理坝基岩体三维各向异性数值分析[J].岩土力学,2010,31(3):949-955. |
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| 作者姓名： | 徐卫亚 郑文棠 宁宇 孟国涛 吴关叶 石安池 |
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| 作者单位： | 1. 河海大学,岩土工程研究所,江苏,南京,210098
2. 中国水电顾问集团,华东勘测设计研究院,浙江,杭州,310014 |
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| 摘 要： | 在分析柱状节理不连续性和各向异性的工程特性基础上，对某拱坝及坝基的柱状节理岩体进行三维数值模拟分析。考虑河谷初始地应力场和岩体各向异性力学性质，采用各向同性本构和各向异性弹塑性本构进行对比分析。计算表明，坝基柱状节理岩体各向异性特性对工程整体应力、变形的影响比较明显，采用各向异性弹塑性模型计算更能反映柱状节理的特殊性。其结果为该坝区岩体工程各向异性力学分析提供了示例。
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| 关 键 词： | 柱状节理 各向同性 各向异性 拱坝 坝基 |
| 收稿时间： | 2008-06-13 |
3D anisotropic numerical analysis of rock mass with columnar joints for dam foundation |
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| XU Wei-ya,ZHENG Wen-tang,NING Yu,MENG Guo-tao,WU Guan-ye,SHI An-chi.3D anisotropic numerical analysis of rock mass with columnar joints for dam foundation[J].Rock and Soil Mechanics,2010,31(3):949-955. |
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| Authors: | XU Wei-ya ZHENG Wen-tang NING Yu MENG Guo-tao WU Guan-ye SHI An-chi |
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| Institution: | 1. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 2. East China Investigation and Design Institute,China Hydropower Engineering Consulting Group Co., Hangzhou 310014, China |
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| Abstract: | Based on the analysis of discontinuity and anisotropy of columnar joints, a 3D numerical simulation is carried out for an arch dam and its foundation. Considering the initial ground stress of river valley and anisotropic mechanical property of rock mass, the computation results with isotropic and anisotropic models are compared and analyzed. The result shows that the characteristics of columnar joints have obvious influence on the stress and displacement of engineering rock mass. The influence of columnar joints on dam or abutment stability is very important; and a successful application is provided for the analysis of anisotropic property of rock mass in this dam area. |
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| Keywords: | columnar joint isotropy anisotropy arch dam dam foundation |
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