| 基于突变理论的高拱坝失稳判据研究 |
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| 引用本文： | 郑东健,雷霆. 基于突变理论的高拱坝失稳判据研究[J]. 岩土工程学报, 2011, 0(1): 23-27 |
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| 作者姓名： | 郑东健 雷霆 |
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| 作者单位： | 河海大学水利水电工程学院; |
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| 基金项目： | 国家自然科学基金项目(50879024); 国家“十一五”科技支撑计划课题(2006BAC05B03) |
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| 摘 要： | 高拱坝的整体安全主要取决于拱坝支撑岩体的稳定.由于高拱坝稳定分析的复杂性,其失稳判据至今没有统一的认识.首先讨论了拱坝整体稳定有限元分析失稳判据的基本原理,分析了失稳考察量尖点突变模型的建立方法,随后结合具体工程实例,分析比较了塑性区贯通、位移突变和塑性区总应变能突变判据的优势和不足.实例表明:位移突变判据与敏感测点的...
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| 关 键 词： | 拱坝 整体稳定 有限元分析 失稳判据 突变模型 |
Instability criteria for high arch dams using catastrophe theory |
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| ZHENG Dong-jian,LEI Ting. Instability criteria for high arch dams using catastrophe theory[J]. Chinese Journal of Geotechnical Engineering, 2011, 0(1): 23-27 |
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| Authors: | ZHENG Dong-jian LEI Ting |
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| Affiliation: | ZHENG Dong-jian,LEI Ting(College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China) |
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| Abstract: | The integral safety of high arch dams mainly depends on the stability of supporting rock system.There is no standard for the instability criteria for high arch dams due to its complexity.The instability criteria for the FEM stability analysis of high arch dam and its cusp catastrophe model are discussed firstly.Then the advantages of plastic zone connection criteria,catastrophe criteria of plastic strain energy and displacement are analyzed.The case shows that the plastic zone connection criteria are affect... |
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| Keywords: | arch dam integral stability FEM analysis instability criterion catastrophe model |
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