深厚覆盖层高土石坝心墙应力变形特性研究  

Stress Deformation Characteristics of Asphalt Concrete Core of High Dam with Thick Cover

作　　者：毕庆涛[1] 马述江 李幻[1] 贾景超[1] 

机构地区：[1]华北水利水电大学,河南郑州450045 [2]河北省水利水电第二勘测设计研究院,河北石家庄050000

出　　处：《华北水利水电学院学报》2013年第5期14-16,共3页North China Institute of Water Conservancy and Hydroelectric Power

基　　金：国家自然科学基金项目(41140030);郑州市创新型科技人才培育计划领军人才项目(10LJRC185);华北水利水电大学高层次人才引进项目(001257;001273)

摘　　要：以在120 m深覆盖层上修建坝高100 m沥青混凝土心墙坝的有限元分析为例,探讨了沥青混凝土心墙高土石坝心墙在深厚覆盖层上的应力变形特性,分析了库水升降循环对沥青混凝土心墙坝心墙应力变形的影响.计算结果表明:沥青混凝土心墙存在较明显的应力拱效应,蓄水后这种拱效应减弱;沥青混凝土心墙具有较强适应坝基变形的能力.Taking the FEA of a 100-meter high asphalt concrete core dam, which is built on the 120-meter deep cover as an example, the stress and deformation characteristics of the asphalt concrete core of high dam on thick cover are discussed, and the effects of reservoir water lifting loop on stress and deformation of asphalt concrete core of high dam are also analyzed. The calculation results show that there is obviously core arching effect in earth-rock dams with asphalt concrete core, and this effect will be weaken after water impoundment ; the asphalt concrete core has a strong ability to adapt to dam deformation.

关 键 词：应力变形 有限元 沥青混凝土心墙土石坝 深厚覆盖层 

分 类 号：TV641.1[水利工程—水利水电工程]