Coupled Quake Of Water-Dam Characteristic Research

With the implementation of the sustainable development strategy, construction of water projects is accelerating. As a clean and renewable energy, water resources will be developed and exploited more rapidly with social and economy development. The safety of high dams and large reservoirs are attracting attention more and more.This paper makes efforts in the seismic design theory and method of hydraulic structures, and aspects of the research are as follows:1. Following the principle of Structural Dynamics Analysis, the water length which coupled vibration of water-dam is calculated, the water length coupled vibration in practical projects is discussed, the water length coupled vibration is abstracted and called Virtual Water Part.2. Using Structural Response Spectrum Analysis, the definition of resonance in the coupled vibration dam-water is extended, the microscopic properties of the resonance that deform is whether beyond the elastic or not is pointed out.3. The causes of landslide of the low dam in the low water level are analyzed by an example of'5.12 Wenchuan Earthquake'. The mechanism of landslides of dam-water resonance is acquired after caluating. And it is concluded that the landslide regions is near 1/3-1/2 height of the dam.4. By numerical simulation and time-history analysis, the seismic performance of the concrete dam is studied. Seismic response of the concrete-gravity dam features in different situations is acquired. Finally the advice for optimal design is given that x-direction displacement on the top of dam should be equal.