白鹤滩非对称性拱坝体形研究  

Study on the Shape of Baihetan Nonsymmetrical Arch Dam

作　　者：徐建军[1] 徐建荣[1] 何明杰[1] 

机构地区：[1]中国水电顾问集团华东勘测设计研究院,浙江杭州310014

出　　处：《水力发电》2011年第3期32-34,61,共4页Water Power

摘　　要：白鹤滩双曲拱坝坝高289 m,坝址河谷地形、地质条件均存在较明显的不对称性,为研究这种不对称性条件对特高拱坝设计的影响,采用拱梁分载法、线弹性有限元和非线性有限元法对拱坝的应力变形特性、超载能力、拱坝破坏形式和抗震能力等进行了深入研究,并对目前已建和在建不对称性河谷中修建拱坝的几种设计思路进行了比较。建议白鹤滩拱坝的设计思路为:不做大规模的河谷改造,只进行常规的坝基开挖,在此基础上将拱坝坝身设计成不对称的体形,与不对称的坝址河谷条件相适应。The height of Baihetan double curvature dam is 289 m. The topographical and geological conditions in the dam site are greatly uonsymmetrical. To study the influences of these nonsymmetrical conditions on the design of Baihetan dam, the arch cantilever trial-load method and linear elastic and nonlinear finite element methods were applied to analyze the stress and deformation, overload capacity, failure modes and seismic capacity of dam. The design ideas for other nonsymmetrical arch dams, which been completed or being constructed, were also compared herein. The idea of no largescale valley transformation and only conventional foundation excavation and with a nonsymmetrical shape adapted to the conditions of dam site is finally proposed for designing Baihetan arch dam.

关 键 词：非对称性 双曲拱坝 有限元法 拱梁分载法 白鹤滩水电站 

分 类 号：TV642.42[水利工程—水利水电工程]