| 三峡工程二期围堰堰体材料流变本构模型研究 |
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| 引用本文： | 孙开畅,田斌,蒋中明.三峡工程二期围堰堰体材料流变本构模型研究[J].三峡大学学报(自然科学版),2010,32(5):20-23. |
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| 作者姓名： | 孙开畅 田斌 蒋中明 |
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| 作者单位： | [1]三峡大学水利与环境学院,湖北宜昌443002 [2]长沙理工大学岩土工程研究所,长沙410076 |
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| 基金项目： | "十一五"国家科技支撑计划课题 |
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| 摘 要： | 三峡工程二期围堰堰体结构材料主要成分是风化砂和石碴料,通过采样和实验分别得到了这两种材料的力学特性和基本性质,总结了其变形规律.在实验成果和实测的基础上,分析研究了围堰填料的应力应变关系.提出了三参量堰体材料流变本构模型,该模型既可以描述材料的蠕变过程行为,又能描述材料应力松弛特性,符合大多数材料的粘弹性力学特性,能够很好的分析研究围堰堰体结构的应力应变.
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| 关 键 词： | 三峡工程 围堰 Duncan E～μ本构模型 三参数流变模型 |
Study of Rheological Constitutive Model of Material of Phase II Cofferdam for Three Gorges Project |
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| Sun Kaichang,Tian Bin,Jiang Zhongming.Study of Rheological Constitutive Model of Material of Phase II Cofferdam for Three Gorges Project[J].Journal of China Three Gorges University(Natural Sciences),2010,32(5):20-23. |
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| Authors: | Sun Kaichang Tian Bin Jiang Zhongming |
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| Institution: | 1.College of Hydraulic ＆ Environmental Engineering,China Three Gorges Univ.,Yichang 443002,China;2.Institute of Geotechnical Engineering,Changsha Univ.of Science ＆ Technology,Changsha 410076,China) |
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| Abstract: | The main components of the Phase Ⅱ cofferdam for Three Gorges Project are weathered granite sand and ballast material.Their mechanical properties and features are obtained based on sampling and experiments;and the deformation law is found as well as.Then the relationship between stress and strain of cofferdam material is analyzed based on the experimental results and measurement.The three parameters rheological model is put forward which can describe not only the behavior of creep,but also the feature of stress relaxation for the cofferdam material.The model meets the viscoelastic mechanical properties of most materials and is good for study of the cofferdam structure. |
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| Keywords: | Three Gorges Project cofferdam Duncan E-μ constitutive model three parameters rheological model |
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