垫座弹性模量对拱坝坝体应力及位移的影响  

Influence of Elastic Modulus of Pedestal on Stress and Displacement of Arch Dam

作　　者：雷康 陈波 LEI Kang;CHEN Bo(Hubei Kaiyaohong Construction Project Co.,Ltd.,Qianjiang 433100,China;Power Construction Corporation of China,Guiyang Engineering Corporation Limited,Guiyang 550081,China)

机构地区：[1]湖北凯耀宏建设工程有限公司,湖北潜江433100 [2]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081

出　　处：《人民珠江》2019年第7期69-72,共4页Pearl River

摘　　要：为了了解不同垫座的弹性模量对坝体应力和位移的影响,以某带垫座混凝土双曲拱坝为例,将垫座选取5种计算方案,采用有限元分析软件ABAQUS分析了5种方案下拱坝对垫座弹性模量的响应特性。结果表明,选取合理的垫座弹性模量能够有效防止坝体产生过大的拉应力造成坝体开裂,同时对坝体的稳定性削弱较小。并通过不同垫座弹性模量方案应力变位特征的对比分析,得到了某混凝土双曲拱坝合理的垫座弹性模量值。In order to understand the influence of the elastic modulus of different pedestals on the stress and displacement of the dam, a double-curvature concrete arch dam with pedestal is taken as an example, and five calculation schemes are selected for the pedestal and analyzed by finite element analysis software ABAQUS for the response characteristics of the arch dam to the elastic modulus of the pedestal. The results show that the selection of reasonable elastic pedestal modulus can effectively prevent the dam from being cracked due to excessive tensile stress, and weakenless the stability of the dam. Through the comparative analysis of the stress displacement characteristics on different elastic pedestal modulus schemes, the reasonable elastic pedestal modulus value of a double-curvature concrete arch dam is obtained.

关 键 词：拱坝 垫座 弹性模量 有限单元法 

分 类 号：TV642.4[水利工程—水利水电工程]