关键词: 白鹤滩水电站, 表孔闸墩, 表孔大梁, 有限元计算

Abstract: Baihetan arch dam has 6 surface orifices and the net width of each is 14 m. They are the most important flood discharge structure of Baihetan arch dam, and the structure of surface orifice is very complex. 3D finite element method is used to analyze the static and dynamic characteristics of the surface orifices under different working conditions. According to the stress calculation results, the reinforcement is reasonably arranged to make the surface orifice structure meet the requirements of bearing capacity and normal operation, which provides engineering experience for similar projects.

Key words: Baihetan hydropower station, surface orifice pier, surface orifice girder, finite element calculation