| 纳子峡面板沙砾石坝应力变形三维有限元分析 |
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| 引用本文： | 张健梁,沈振中,赵斌,顾罡宇.纳子峡面板沙砾石坝应力变形三维有限元分析[J].水力发电,2011,37(4). |
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| 作者姓名： | 张健梁 沈振中 赵斌 顾罡宇 |
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| 作者单位： | 1. 河海大学水文水资源与水利工程科学国家重点实验室,江苏,南京,210098
2. 甘肃省水利水电勘测设计研究院,甘肃,兰州,730000 |
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| 基金项目： | 河海大学水文水资源与水利工程科学国家重点实验室专项基金 |
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| 摘 要： | 采用三维非线性有限元法建立纳子峡水电站面板砂砾石坝的三维有限元分析模型,对大坝填筑施工过程和水库蓄水过程进行仿真研究,计算分析施工期和蓄水期大坝、面板及周边缝的变形特性.计算结果表明:施工期和蓄水期坝体的最大沉降分别为0.74 m和0.76 m,占最大坝高的0.61%和0.63%;第一主应力最大值分别为2 321 kPa和2 478 kPa,第三主应力最大值分别为588 kPa和626 kPa,应力水平在0.3-0.85之间;周边缝和面板缝法向拉伸变形最大值分别为29 nun和34 mm,垂直剪切变形最大值分别为25 mm和0,顺缝剪切变形分别为27 nun和29mm.从静力分析结果看,纳子峡面板坝的设计方案是合理的.
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| 关 键 词： | 非线性有限元法 周边缝 面板 变形 应力 纳子峡面板砂砾石坝 |
3-D FEM-based Stress and Deformation Analysis of Nazixia Concrete-facing Sand-gravel Dam |
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| Zhang Jianliang,Shen Zhenzhong,Zhao Bin,Gu Gangyu.3-D FEM-based Stress and Deformation Analysis of Nazixia Concrete-facing Sand-gravel Dam[J].Water Power,2011,37(4). |
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| Authors: | Zhang Jianliang Shen Zhenzhong Zhao Bin Gu Gangyu |
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| Affiliation: | Zhang Jianliang1,Shen Zhenzhong1,Zhao Bin2,Gu Gangyu1(1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University,Nanjing 210098,Jiangsu,China,2.Gansu Provincial Investigation,Design & Research Institute of Water Conservancy & Hydropower,Lanzhou 730000,Gansu,China) |
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| Abstract: | The filling process of the concrete-facing sand-gravel dam and the storage process of the reservoir for Nazixia Hydropower Station are simulated by 3-D nonlinear EFM,and the deformations of dam,face slab and peripheral joint in construction and storage periods are calculated respectively.The results show that,(i) the maximum dam settlements in construction and storage periods are 0.74 m and 0.76 m respectively,which accounts for 0.61% and 0.63% of the dam height;(ii) the maximum first principle stresses are... |
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| Keywords: | nonlinear FEM peripheral joint face slab deformation stress Nazixia concrete facing sand-gravel dam |
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