盖下坝水电站混凝土椭圆双曲拱坝设计  

Design of Elliptical Double-curvature Concrete Arch Dam for Gaixiaba Hydropower Station

作　　者：张喜武[1] 李润伟[1] 王晓丽[1] 夏辉[1] 韩韬[1] 

机构地区：[1]中水东北勘测设计研究有限责任公司,吉林长春130021

出　　处：《水力发电》2011年第2期50-53,共4页Water Power

摘　　要：盖下坝水电站工程拱坝属于典型的窄谷拱坝。在设计过程中,充分考虑窄谷山高、坡陡、河床下切的特点,根据实际地质地形条件,左坝肩采取洞挖形式,最大程度减少对坝顶以上边坡的扰动。采用厚高比为0.106的椭圆双曲拱坝体形,减小了拱坝中心角,实现了既扁又尽可能薄的扁平化拱坝设计,改善拱端应力条件,减少拱坝混凝土工程量。The Gaixiaba Dam is a typical arch dam in a narrow valley. According to the geological and topographical conditions of steep slope and corrading riverbed at dam site, the left abutment excavation was designed to conduct from tunnel to minimize the disturbance to the slope above the dam crest. The designed dam shape with a ratio of thickness to height of 0.106 can reduce the central angle to achieve the dam flattening, and can improve the abutment stress and reduce concrete volume.

关 键 词：窄谷拱坝 椭圆双曲拱坝 拱肩洞挖 拱坝扁平化 盖下坝水电站 

分 类 号：TV642.4[水利工程—水利水电工程]