| 高面板堆石坝工作性态的弹性和弹塑性对比分析 |
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| 引用本文： | 王永明,汝璇卿. 高面板堆石坝工作性态的弹性和弹塑性对比分析[J]. 三峡大学学报(自然科学版), 2009, 31(6): 24-28 |
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| 作者姓名： | 王永明 汝璇卿 |
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| 作者单位： | 1. 河海大学,水利水电工程学院,南京,210098
2. 河海大学,商学院,南京,210098 |
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| 摘 要： | 筑坝堆石料具有明显的非线性、压硬性、剪胀性和应力引起的各向异性,其应力变形特性直接影响到面板、接缝的应力变形情况.合理的堆石体本构模型是保证对高堆石坝进行正确预测分析的前提,对常用的邓肯E-B模型和南水双屈服面模型进行了对比性分析,最后在参数等价的基础上利用这两个模型对一座200 m级高面板坝进行了有限元分析,对造成计算差异的主要原因进行了探讨,为今后计算本构模型的选用提出了建议.
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| 关 键 词： | 堆石料 本构模型 参数等价 对比分析 |
Comparative Analysis of High Concrete Faced Rockfill Dam with Elastic Analysis and Elastoplastic Analysis Methods |
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| Wang Yongming,Ru Xuanqing. Comparative Analysis of High Concrete Faced Rockfill Dam with Elastic Analysis and Elastoplastic Analysis Methods[J]. Journal of China Three Gorges University(Natural Sciences), 2009, 31(6): 24-28 |
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| Authors: | Wang Yongming Ru Xuanqing |
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| Affiliation: | Wang Yongming Ru Xuanqing (1. College of Water Conservancy ＆ Hydropower Engineering, Hohai Univ. , Nanjing 210098, China; 2. Business School, Hohai Univ. , Nanjing 210098, China) |
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| Abstract: | The rockfill has the properties of nonlinear,pressure-sensitivity,dilatancy and anisotropy which affect the stress and deformation of the face and joint heavily.Considering reasonable constitutive model is the premise of accurate prediction;the Duncan E-B model and Nanshui double yield surface model are analyzed comparatively;and both are utilized in a 200m high dam finite element analysis based on parameters relative equivalence.The main reasons of the difference are investigated;and some suggestions about model selection are also put forward. |
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| Keywords: | rockfill constitutive model parameters relative equivalence comparative analysis |
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