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在水布垭混凝土面板堆石坝的设计中,针对筑坝材料的特性和堆石体的变形特征,进行了坝体结构及坝体材料分区的设计。对面板应力应变分析,采用E—B模型进行三维非线性有限元计算,计算成果表明:就坝体变形而言,竣工期和蓄水期的水平位移与垂直沉降值,比照已建工程均在允许范围内;面板位移与应力分析的结果亦与已建工程的面板应力分布规律一致。在筑坝材料与变形控制方面,可采取合理分区、优选坝料、提高填筑密实度等措施,控制并减小坝体变形。在面板混凝土的防渗和强度研究上,提出了以下控制要求:如严格控制材料级配与密实度,改善面板基础约束状态,提高面板混凝土的抗渗能力和抗拉压强度等。
In the design of Shuibuya concrete faced rockfill dam, according to the characteristics of dam material and the deformation characteristics of rockfill body, the design of dam body structure and dam body material is designed. The stress and strain analysis of the panel is carried out by using the E-B model for the three-dimensional nonlinear finite element calculation. The calculation results show that the horizontal displacements and the vertical settlement values during the construction and storage phases are as follows The allowable range; the result of panel displacement and stress analysis is also consistent with the panel stress distribution of the built project. Dam construction materials and deformation control, can take reasonable zoning, dam material optimization, improve the filling density and other measures to control and reduce the dam deformation. In the concrete seepage control and strength of the panel, put forward the following control requirements: such as strict control of material gradation and density, to improve the basic constraints of the panel to improve the panel concrete impermeability and tensile strength.