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胶凝面板堆石坝结构分析与优化设计研究(施金)

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&q*MvfI m0胶凝面板堆石坝结构分析与优化设计研究水利论文'z [h{zxM VFz

:xiJ0z+aJ0uT0【作者】施金 【导师】蔡新水利论文2EI4U9H bU ~ S
【作者基本信息】南京水利科学研究院,水工结构工程,2006年,硕士

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【中文摘要】 首先扼要介绍了国内外胶凝面板堆石坝的研究现状,胶凝面板堆石坝作为混凝土面板堆石坝中较为特殊的一种,具有诸多优点,但在国内的应用还是空白。 采用非线性有限元法计算了胶凝面板堆石坝典型断面坝体和面板的应力与位移。阐述了坝料中胶凝含量的变化引起的邓肯E-μ模型各项参数的变化趋势,由此选择了三种典型的胶凝坝体分析了坝体和面板的应力与位移变化,并与普通堆石料情况进行了比较。 正常情况下胶凝面板堆石坝的整体稳定均能满足要求。对于坝坡稳定,采用瑞典条分法和简化毕肖普法,验证了胶凝面板堆石坝在稳定性方面的工作性态是安全可靠的。比较不同胶凝含量的胶凝堆石料坝体之间的整体稳定和坝坡稳定计算成果,整体稳定安全系数基本不变,坝坡稳定安全系数随胶凝含量的增加而增大。 采用非线性数学规划法对胶凝面板堆石坝进行优化设计。建立了以工程造价为目标函数、上下游坝坡倾角为设计变量、几何和性态约束为约束条件的最优化数学模型,模型的求解采用罚函数法。对优化后的胶凝面板堆石坝计算了坝体和面板的应力变形,进行了整体稳定分析和坝坡稳定分析,并给出了不同坝料下瑞典条分法计算的最危险滑弧面。比较了优化前后坝体的应力、变形与稳定分析结果。...更多优化后的胶凝面板堆石坝是安全可靠的。 胶凝面板堆石坝优化后坝坡比普通面板坝更陡、节省的方量多、造价低,具有更高的经济性。  还原水利论文8vktIT8buk%i*n

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【英文摘要】 The domestic and foreign research situation of concrete faced cemented-rockfill dam (Abbr. CFCRD) is introduced at first. CFCRD is a kind of special concrete faced rockfill dam (Abbr. CFRD) with many advantages, but its application is vacant in our country.The nonlinear finite element method is used to calculate the stress and deformation of CFCRD's dam body and faceplate. The parameters of Duncan E-μ model are changed when the content of cement in dam body material is changed. Thereby three typical cemented-rockfills are chose to analyze the changes of stress and deformation, and then the result is compared with normal rockfill.Under normal conditions, monolithic stability of CFCRD can meet demands. Based on Swedish slice method and simplified bishop method, dam slope stability can also meet demand. When content of cement in CFCRD body material is changed, the stability calculating result is changed too. Monolithic stability safety coefficient is changeless. Dam slope stability safety...更多 coefficient augments along with the increase of cement content.Nonlinear mathematical programming method is used in CFCRD optimal design. Optimal mathematical model is created with construction cost as the objective function, angles of dam slope as the design variables, geometric and mechanical constraints as the constrained conditions, and use penalty function method to solve the model. After optimization, stress and deformation are calculated, and stability is analyzed. Based on Swedish slice method, the most dangerous slip circles of different dam materials are given out. Stress, deformation and stability analysis of the same cemented-rockfill dam are compared before and after optimization.The dam slope of CFCRD is steeper than CFRD, so its saving quality of stone is more than CFRD and the cost is little than CFRD. CFCRD is economical.  还原

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z/g0pVE9pW0【中文关键词】 胶凝面板堆石坝; 颗粒级配; 胶凝含量; 应力变形; 稳定分析; 优化设计水利论文ii/H3\6r5v.ae!R
【英文关键词】 concrete faced cemented-rockfill dam; grain composition; cement content; stress and deformation; stability analysis; optimal design水利论文\*r*Svx
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TAG: 堆石坝 面板 研究 施金 结构分析
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