功果桥水电站碾压混凝土重力坝设计

摘要

主要介绍了功果桥水电站碾压混凝土重力坝布置及断面、构造设计等内容。结合中国龙滩、百色、大朝山、棉花滩等水电站工程的成功经验，功果桥坝体防渗层采用二级配碾压混凝土及上游模板周边变态混凝土防渗，较采用“金包银”模式防渗结构，可大幅度提高坝体混凝土浇筑速度。%In this paper, layout, section and structural design of RCC gravity dam of Gongguoqiao Hydropower Project are introduced. Based on the successful experience of many projects in China such as Longtan, Baise, Dachaoshan and Mianhuatan Hydropower Projects, etc, RCC (with 2-level aggregate particle sizes:5~20mm, 20~40mm, max.size 40mm) is adopted as the impervious barrier and the grout enriched vibrated concrete, as the impervious structure around the perimeter of the upstream framework.Compared with impervious structure with conventional concrete, this impervious design significantly increases the concrete placement speed of high dams.