不同蓄水方式对堆石坝应力变形的影响分析——以冶勒水电站工程为例  

Analysis on influence of stress-deformation of asphalt concrete core rockfill dam with different impoundment ways:case of Yele Hydropower Station

作　　者：胡升伟[1] 张权[2] 龚军[3] 陈建康[1] 

机构地区：[1]四川大学水利水电学院,四川成都610065 [2]黄河勘测规划设计有限公司,河南郑州450003 [3]中国水电顾问集团成都勘测设计研究院,四川成都610072

出　　处：《人民长江》2011年第11期35-38,82,共5页Yangtze River

摘　　要：水库先期蓄水和后期蓄水对大坝的应力变形有不同的影响。采用邓肯-张E-B模型对冶勒水电站堆石坝进行三维有限元建模,结合不同坝体材料的计算参数,在先期蓄水和后期蓄水条件下,拟定两种计算方案,对沥青混凝土堆石坝在竣工工况和正常蓄水位工况下的应力变形进行了三维有限元分析,并从应力变形角度对其安全性进行了初步评价。通过计算分析和比较,这两种蓄水方式下大坝的应力变形均符合堆石坝的一般分布规律,且量值在合理的范围内。Early and late impoundment ways have different effects on stress-deformation of reservoir dam.By adopting Duncan-Chang E-B model,we established 3D finite element model for asphalt concrete core rockfill dam in Yele Hydropower Station.Combining calculation parameters of different materials of dam,we worked out two numerical procedures under the conditions of early and late water storage ways.Furthermore,we carried out 3D finite element analysis on stress-deformation of the asphalt concrete core rockfill dam in completion under the conditions of normal water storage level,and preliminarily evaluated its safety from the perspective of stress-deformation.The results show that through the analysis and comparison,stress-deformation of dam under the two water impoundment ways are in accordance with the general distribution of rockfill dam,and the values are within a reasonable scope.

关 键 词：有限元 蓄水方式 应力变形 邓肯—张E-B模型 

分 类 号：TV641.41[水利工程—水利水电工程]