基于有限元法对拱坝坝肩动力稳定的分析  

FEM-based dynamic stability analysis of arch dam abutment

作　　者：李梦[1] 常晓林[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《湖北水力发电》2008年第2期7-9,共3页Hubei Water Power

摘　　要：拱坝在地震作用下稳定性问题,尤其是拱坝坝肩的抗震稳定性问题关系重大。以大丫口水电站拱坝为例,计算坝肩在地震作用下的稳定安全系数并进行评价分析。这里首先采用有限元时程分析法计算动力作用下的应力值,与静力作用下应力值累加后,与以往不同的是,这里并没有直接利用有限元得出的内力在滑移面进行应力积分,而是通过应力积分法计算坝体对坝肩在建基面处的推力,应用刚体极限平衡法计算抗滑稳定系数并进行分析评价。The problem of the arch dam s seismic stability,especially the abutment s stabihly,is very important.Taking the concrete arch dam of Dayakou Hydropower Station for example,the safety actor for sliding of abutment under earthquake is calculated;and the appraisal analysis.Is made.First,the maximum stress value under dynamic load is calculated with time interval analysis method;and the maximum stress value under both dynamic and static load.Is obtoined,Then what is different from the past,is that here there is...

关 键 词：坝肩稳定 时程分析法 应力积分法 刚体极限平衡法 

分 类 号：TV642.45[水利工程—水利水电工程]