高碾压混凝土重力坝设计方法研究

针对高碾压混凝土重力坝的特点,结合龙滩水电工程的实际条件,对坝体应力计算方法和承载能力,施工期温度应力分析方法和温控防裂措施,以及大坝连接施工技术等问题进行了研究。研究工作以江垭和涌溪三级电站碾压混凝土重力坝施工现场作为试验论证场地,采用现场,室内试验研究与分析计算相结合的方法,考虑新理论的运用,计算分析新方法的提出,设计参数取值标准的选择,以及有关判别准则的拟定第一系列设计环节之间的协调和配套,建立适合我国高碾压混凝土重力坝特点的设计方法。研究成果已在龙滩工程设计和相关工程的建设中应用,并取得直接的经济效益。

Study on the design method of high RCC gravity dam

In accordance with the characteristics of high RCC gravity dam and in combination with the actual conditions of Longtan hydropower project, the study was made on the stress calculation methods and bearing capacity of dam body, temperature stress analysis methods and temperature control measures for avoiding crack during construction period, and the continuous construction technology of dam. The study took the RCC gravity dams of Jiangya and the Yongxi Third cascade hydropower stations as its study and test site. It combined the field and indoor tests with the analysis and calculation results. The application of new theories, new calculation and analysis methods, and the selection of design parameter values have been taken into account. Therefore, a design method that is suitable to the characteristics of high RCC gravity dam in China has been set up. The research results have been applied to the design of Longtan hydropower project and the construction of other relative projects and the direct economic benefits have been gained.