摘要
为分析软弱地基上溢流坝的抗震安全性能,以贵州省兴仁县鲁皂水库重力坝为例,基于流固耦合理论,考虑地震作用下库水和大坝之间的相互作用,建立了溢流坝段有限元模型,采用时程法进行地震动力分析,获得了坝体动应力、动位移和加速度的分布规律,并将水工建筑物抗震规范中的振型分解反应谱法与时程法的计算结果进行对比。结果表明,该工程具有良好的抗震安全性能。
Taking gravity dam for Luzao reservoir located in Xingren Couaty of Guizhou Province for an example, theseismic dynamic characteristics of the overflow section of the dam built on soft foundation is studied with finite elementmethod. Based on the theory of fluid-solid coupling, the dynamic seismic response is analyzed by considering the interaction between reservoir water and dam in earthquake. The distribution of dynamic stress, dynamic displacement and accel-eration of the dam are achieved by time history method and response spectrum method. Compared with modal analysis re-sponse spectrum method and time history method in specifications for antiseismic hydraulic construction, the results showthat the project has good aseismic safety performance.
出处
《水电能源科学》
北大核心
2014年第12期83-86,共4页
Water Resources and Power
关键词
重力坝
地震响应
流固耦合
时程法
反应谱法
gravity dam
seismic response
fluid-solid coupling
time history method
response spectrum method
