某水电站泄洪洞工作闸门室弧门支撑梁结构受力及配筋研究  

Research on Mechanical Behavior and Reinforcement of Gate Chamber Radial Support Beam of Spillway Tunnel in Hydropower Station

作　　者：李桂林 丁建新 LI Gui-lin;DING Jian-xin(China Energy Group Tibet Electric Power Co.,Ltd.,Lhasa 850033,China;Changjiang Survey,Planning and Design Research Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]国家能源集团西藏电力有限公司,西藏拉萨850033 [2]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《水电能源科学》2024年第5期140-143,191,共5页Water Resources and Power

基　　金：湖北省自然科学基金青年项目(2023AFB370)。

摘　　要：某水电站左岸山体内平行布置3条泄洪洞,有压洞与无压洞衔接部位设工作闸门室连通3条泄洪洞,闸门室底部采用弧形工作门控制水流,弧门支撑大梁布置于工作闸门室洞挖后的反坡段。弧门支撑大梁断面较大,属大体积混凝土结构,施工期受温度荷载作用,与反坡段岩体接触关系多变,联合受力问题复杂。为此,采用FLAC~(3D)软件,考虑运行期各设计状况及荷载效应组合,重点分析了闸门室支撑梁结构与围岩形成联合承载特性,并据此开展支撑梁结构内力计算、结构配筋设计。研究成果可为其他类似工程泄洪洞闸门室弧门支撑梁配筋提供参考。Three tunnel spillways are designed in parallel on the left bank of a hydropower station,and the gate chamber is connected to the spillway tunnel between the pressure tunnel and the non-pressure tunnel.The water flow is controlled by a curved working gate at the bottom of the gate chamber.After the excavation of the gate chamber,the brace summer is set up in the reverse arc section.The brace summer of the gate chamber is a mass concrete structure,which may be separated from the surrounding rock due to temperature load during construction.The contact relation with the surrounding rock in the reverse section is varied,and the mechanical behavior is complicated.The FLAC-3D software is used to analyze the force of the gate chamber brace summer and the surrounding rock,and the internal force calculation and reinforcement design of the brace summer are carried out.The research results can provide reference for the reinforcement of the gate chamber brace summer of the spillway tunnel in other similar projects.

关 键 词：泄洪洞 闸门室 弧门支撑梁 数值计算 结构配筋 

分 类 号：TV663[水利工程—水利水电工程] TV314