龙滩重力坝21坝段及引水道三维结构分析研究  

3-D Structural Analysis and Research on Diversion Waterway of 21st Monolith of Longtan Gravity Dam

作　　者：陈灯红[1] 彭刚[1] 陈高峰[1] 祝承义[2] 

机构地区：[1]三峡大学土木水电学院,湖北宜昌443002 [2]二滩水电开发有限责任公司,成都610021

出　　处：《三峡大学学报（自然科学版）》2008年第2期16-19,共4页Journal of China Three Gorges University：Natural Sciences

摘　　要：采用三维有限元法,对龙滩碾压混凝土重力坝21坝段坝体及引水道组合结构进行了分析.研究了施工期及运行期4种工况下坝体的应力变形情况,重点了解了引水道沿水流方向8个剖面的环向应力、闸门槽周边正应力及坝内3个廊道周边环向应力,并对计算结果进行了分析评价.最后文中给出了一些建议,为结构的设计、施工提供参考依据.The structure of the dam body and the diversion waterway of the 21st monolith of Longtan Roller Compacted Concrete （RCC） Gravity Dam is analyzed based on 3 D finite element method. The stresses and deformations of the dam body are researched for it is under 4 working conditions of the construction stage and the operating period. And the circumferential stresses of the diversion waterway＇s 8 cross-sections which are along the water flow, the normal stresses around the gate slot, the circumferential stresses around the 3 galleries are mainly studied; and the calculation results are analyzed and evaluated. Finally, some reasonable suggestions which could be referred in the design and construction are given.

关 键 词：三维有限元 引水道 应力变形 环向应力 龙滩重力坝 

分 类 号：TV314[水利工程—水工结构工程] TV642.2