那比重力坝4号坝段坝基加固措施优化研究  

Optimization of Foundation Reinforcement for 4th Dam Block of Nabi Gravity Dam

作　　者：周雪[1] 张恩宝[2] 杨永涛[1] 王慧娟[1] 张建海[1] 

机构地区：[1]四川大学水电学院,四川成都610065 [2]中国水电顾问集团成都勘测设计研究院,四川成都610072

出　　处：《红水河》2011年第3期50-55,68,共7页Hongshui River

摘　　要：文章采用三维非线性有限元法,对那比水电站工程4号坝段的坝基抗滑稳定性进行研究,对比分析加固前后变位及应力的变化和三种加固方案下4号坝段坝基超载稳定安全系数。优化研究表明:4号坝段采用锚筋桩和固结灌浆加固处理措施后可以满足坝基抗滑稳定性要求,推荐采用长6 m间排距1.5 m×1.5 m的锚筋加固方案。The article studies stability against sliding of 4th dam block foundation of Nabi gravity dam by 3D non-linear finite element method.The change of displacement and stress before and after reinforcement and overload safety factor of stability against sliding of the foundation under 3 reinforcing plans are compared.It concludes that the stability against sliding of 4th dam block foundation reinforced with grouting and anchor pile meets the design requirement.Meanwhile,reinforcement with 6m long anchor rod in 1.5m×1.5m spacing is recommended.

关 键 词：非线性有限单元法 稳定安全系数 破坏模式 超载法 灌浆和锚筋桩加固 优化研究 那比水电站 

分 类 号：TV223[水利工程—水工结构工程]