腾龙桥二级水电站压力管道结构设计  

Structural Design of the Penstock in Tenglongqiao II Hydropower Station

作　　者：张荣斌 ZHANG Rongbin(Yunnan Institute of Water & Hydropower Engineering Investigation, Design and Research, Kunming 650021, China)

机构地区：[1]云南省水利水电勘测设计研究院,云南昆明650021

出　　处：《水电与新能源》2020年第6期5-7,12,共4页Hydropower and New Energy

摘　　要：腾龙桥二级电站引水发电压力钢管采用坝后背管形式,在钢管穿过厂坝建筑物永久分缝处,为适应温度、水压力、沉陷等因素而产生轴向及径向变位差,通过对钢管的合理布置、结构优化设计与钢管过厂坝分缝的适宜措施等,采用了外包软垫层的垫层管代替伸缩节,施工效率高、干扰小、施工进度快、降低了工程投资,该电站投产9年来运行良好。In Tenglongqiao II Hydropower Station,steel lined reinforced concrete penstock laid on downstream dam surface is adopted.The layout and structural design of the penstock are introduced.Specifically,at the location where the penstock crosses the permanent joint of the powerhouse and the dam,penstock with external soft cushion layer is used to replace the traditional expansion joint to adapt to the axial and radial displacement differences induced by temperature,water pressure and subsidence.The design scheme of the penstock is of high construction efficiency,small interference,fast construction progress and low construction cost.The station has operated well for nine years since its operation.

关 键 词：坝后背管 垫层管 伸缩节 

分 类 号：TV7324[水利工程—水利水电工程]