The Research Of Hydrodynamic Pressures On Dams In Earthquake Of RCC Gravity Dam

These years witness a continuous rise of crude-oil prices in the world. As a renewable resource, hydroelectric power plays more and more important role in energy supply, relaxing the bottleneck of resources that China encounters in the process of development. Since northwestern and southwestern part of China within the range of meizoseismal area is rich in hydraulic water resource. China is constructing and planning many hydropower projects, fostering the development of the western region. Meanwhile, these projects could provide electric power and other profits for coastal area of southeast. The aseismic capabilities of hydropower projects have close relationship with lives and properties of people and productions of industry and agriculture, so it is important to consider the effect of earthquake loads in the design of these projects.In the aseismic design of hydraulic structures, the hydrodynamic pressure on dams under earthquake loads is considered as an important load. As a result, study of hydrodynamic pressures on dams will play an important part in aseismic safety of dams. In this paper, the experimental and numerical analysis is systematically developed for the main problems on hydrodynamic pressure on dams, based on three-dimension integrated model tests for the Kalasuke dam in Xinjiang province.Specifically, the study is divided into four parts as follows:1. Theory of interaction between water and sturucture and research findings for hydrodynamic pressure are introduced.2. The prepared work of the integrated model tests is illuminated, including the material formulation, the adopted seismic waves, sensor distribution of the model tests, and analysis of the test results, such as the dynamic characteristics and dynamic response characteristics of the model dam.3. Based on ADINA8.2 software, the numerical analysis of hydrodynamic pressures is performed. By the numerical analysis of two-dimension and three-dimension model, the impact of the dam height, the input grade of earthquake waves, earthquake waveform and the scope of river vally for hydrodynamic pressures are generally analyzed.4. By the contrast of model test results and numerical analysis, basic properties of hydrodynamic pressure are given, including distribution of hydrodynamic pressure along the model dam, and the trend of hydrodynamic pressure change with the input grade of the earthquake load.