周公宅水库混凝土双曲拱坝体形优化设计

Shape Optimization of Zhougongzhai Double Curvature Arch Dam

周公宅水库大坝为抛物线形混凝土双曲拱坝,最大坝高125.5 m。根据该工程河谷宽、温差大、水位变幅大的特点,对拱坝的前倾度、拱冠梁剖面厚度、拱圈中心角、拱端加厚等方面进行了研究,采用拱梁分载法和线弹性有限元法对拱坝进行了全面的体形优化和分析,取得了适应周公宅坝址的优良拱坝体形。

Zhougongzhai concrete double curvature arch dam is in parabolic shape with maximum height of 125.5 m.The front lean,section thickness of the crown cantilever,central angle of arch ring and arch abutment thickness of the dam were studied after considering the site conditions of wider river valley,larger temperature difference and larger water level range.The final shape of dam is determined by using arch-cantilever method and linear elastic finite element method for analysis and optimization.