摘要
针对Hardfill坝具有高抗震性和高安全性的优势,基于大型有限元软件ADINA,分别运用附加质量法和流固耦合理论并辅以空库时大坝的动力特性,比较分析了Hardfill坝地震动力响应。结果表明,两种方法求得的坝体自振频率基本相同,但以附加质量模型为基础的坝体动力响应大于用流固耦合理论求得的数值。故用附加质量法分析Hardfill坝的地震动力响应基本可行,但计算结果较保守。
Hardfill Dam has advantages of high earthquake resistance and security. Based on the finite element software ADINA, the seismic dynamic response of Hardfill Dam is analyzed by using the theory of accessory mass and fluidsolid coupling as well as considering the dynamic property of an empty reservoir. The results show that the autooseillation frequency obtained by two methods is equal approximately while the dynamic response of the dam body with accessory mass model is greater than that of the theory of fluid-solid coupling. Therefore, it is feasible to analyze the seismic dynamic response of Hardfill Dam using accessory mass method. Furthermore, the calculation result has more safety margin.
出处
《水电能源科学》
北大核心
2010年第2期85-88,共4页
Water Resources and Power
