百米级硬填料坝结构安全度分析  

Structural safety analysis of a 100m level hardfill dam

作　　者：熊堃[1,2] 何蕴龙[2,3] 陈涛 

机构地区：[1]长江勘测规划设计研究院工程技术研发中心,湖北武汉430010 [2]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [3]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 [4]湖北省南水北调兴隆水利枢纽工程建设管理处,湖北潜江433100

出　　处：《人民长江》2012年第2期74-77,82,共5页Yangtze River

基　　金：国家自然科学基金项目(50679058);四川大学水力学与山区河流开发保护国家重点实验室开放基金资助项目(0912);武汉大学博士研究生科研自主基金资助项目(20082060201000021)

摘　　要：硬填料坝(Hardfill坝)是一种新坝型,Oyuk坝是世界上仅有的两座高度超过100 m的硬填料坝之一。对该坝在正常运行工况以及地震工况下的大坝工作性态进行了弹塑性有限元分析,并运用水荷载与地震荷载超载法探讨了Oyuk坝在静动条件下的破坏模式与安全度。研究结果表明,在正常运行工况以及OBE地震工况中,Oyuk坝全断面受压,坝体强度安全系数与抗滑稳定系数均较高,坝体基本处于弹性工作状态。由于该坝在坝底、坝踵设置混凝土分区、并在坝趾区采用了高强度硬填料等措施,在水荷载及地震超载分析中具有很高超载安全度。Hardfill dam is a new type of dam, and Oyuk Dam is one of the only two Hardfill dams higher than 100m in the world. Based on elastoplastic FEM, the failure modes and structural safety of the dam under static and seismic conditions were studied with overload method by water load and earthquake load. The results show that whole section of dam body is almost com- pressed under the condition of normal operation and basis earthquake with high strength and anti - sliding safety factors and is ba- sically in an elastic state. Because of engineering measures such as concrete partition at dam bottom and dam heel, high strength hardfill material filling at dam toe, the dam possesses high overload safety margin for water load and earthquake.

关 键 词：硬填料坝 弹塑性有限元 结构安全度 Oyuk坝 

分 类 号：TV698[水利工程—水利水电工程]