Abstract
Gravity dam is a hydraulic structure subjected to high stress loads by its own weight to maintain its stability. Gravity dams mainly bear the pressure of reservoir water changes, the impact of high-intensity earthquakes, the wind and waves, the vibration of generator sets, etc. Therefore, the structural safety of dams is a major event related to engineering safety. It has very important theoretical significance and practical value for dam structural safety analysis. In this paper, the concrete gravity dam is taken as the main research object. The dam is modeled by the finite element method. According to the water level of the dam reservoir, the static and dynamic analysis of the dam under various responses, the deformation situation and strain situation of the dam is studied. Then combined with seismic wave selection and power spectrum estimation method, the seismic performance of the dam is analyzed. The specific method is to find the weak point of the dam and study the fatigue life of the dam to obtain the overall fatigue life of the dam.
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