摘要
依托西部地区立洲碾压混凝土拱坝,在对大坝进行三维静力分析的基础上,通过人工生成地震波,分析立洲拱坝自振频率和振型;采用有限元时间历程分析方法对该拱坝在不同工况下的地震响应特性进行数值分析,获得动位移、动应力等分布规律,并评价拱坝的抗震安全性,为工程设计提供参考依据。
Taking Lizhou RCC arch dam in west area for example,based on three-dimensional static analysis,a study is made of generating artificially seismic waves,model shape and natural frequency of the arch dam.The time history method is adopted to analyze the response of arch dams under the condition of earthquake.The results reveal that the law of dynamic stress,dynamic displacement of the dam body;the aseismic safety of earth-arch dam is evaluated.Thus,it serves as a reference for the design of projects.
出处
《中国农村水利水电》
北大核心
2013年第8期121-124,126,共5页
China Rural Water and Hydropower
关键词
立洲拱坝
时程法
地震波
动力分析
Lizhou RCC arch dam
time history method
seismic waves
dynamic analysis
