蜀河水电站水电机组防水钢盖板流激振动安全评价研究  

Research on Safety Evaluation of Waterproof Steel Gate Vibration Caused by Surface Hole Flow Discharge in Shuhe Hydropower Station

作　　者：席秋义 张双平 徐建光 周智民 

机构地区：[1]国网陕西省电力公司电力科学研究院,陕西西安710054 [2]陕西汉江投资开发有限公司蜀河水力发电厂,陕西旬阳725721

出　　处：《水力发电》2014年第3期55-58,共4页Water Power

摘　　要：蜀河水电站机组防水钢盖板在表孔过流时受到水流冲激,在动水压力作用下产生振动。以蜀河水电站1号机组防水钢盖板为研究对象,采用现场检测试验和有限元理论计算两种方法识别了钢盖板的自振频率,对是否发生危害较大的共振做出了评价;此外,还对钢盖板在表孔泄洪闸门启闭过程的振动动力响应进行了检测分析,对容易破坏的部位进行了识别,并指出了防水钢盖板将来的安全评价重点。The waterproof steel gates in Shuhe Hydropower Station which flow through surface hole will emerge vibration when the flood is discharged through surface holes. Taking the waterproof steel gate of No. 1 bulb unit as study case, the free vibration frequency of waterproof steel gate is recognized through two methods of on-site measurement and finite element calculation, and the possibility of gate resonance is evaluated. The dynamic responses of waterproof steel gate during the opening and closing of surface hole sluice gates are also measured, and the fragile zones are identified. The future safety evaluation keys of waterproof steel gates are finally proposed.

关 键 词：防水钢盖板 共振 模态 有限元 蜀河水电站 

分 类 号：TV735[水利工程—水利水电工程]