Analysis of Dynamic Response Characteristics for Core Rockfill Dam with High Asphalt Concrete

According to the actual conditions of the Guanmaozhou hydropower station project,the three-dimensional nonlinear finite element method was used to establish a three-dimensional finite element model of the core rockfill dam with asphalt concrete in the Guanmaozhou station.The model simulated the processes of the dam filling and reservoir impounding.Based on the static field of the dam,the dynamic response characteristics of the dam under the design earthquake actions were analyzed.The distributions of acceleration response,velocity response,and displacement response of the core rockfill dam and the safety coefficient of the dam element were obtained.The results showed that the distributions of acceleration response,velocity response,and displacement response of the dam accord with the general law.Overall,the dynamic response of the asphalt concrete core to the earthquake is insignificant and the safety coefficient of each dam element is greater than 1 at all times,and thus the dam is safe under the design earthquake actions.