汗华水电站表孔弧形闸门流激振动试验  

Experimental research on flow-induced vibration for spillway radial gate of Khan Khwar Hydropower Station

作　　者：张微 张鹏飞[2] 王均星[3] 

机构地区：[1]长江勘测规划设计研究院,湖北武汉430010 [2]西北勘测设计研究院,陕西西安710065 [3]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2010年第6期719-722,共4页Engineering Journal of Wuhan University

摘　　要：采用完全水弹性相似模型试验的方法,对巴基斯坦汗华水电站表孔弧形闸门的流激振动情况进行了研究.动力响应试验结果表明:大弧门和舌瓣门的自振频率均避开了水流脉动压力高能区,运行中可避免因振动频率相近而引发的自激振动.另一方面,闸门振动加速度的大小与止水设置情况密切相关,在闸门运行过程中,应尽量避开加速度最大和动应力最大的工况.Due to its lightness,reasonable force distribution,radial gate is widely used in hydraulic engineering.Studies were conducted under the experiment of hydro-elastic model test of the spillway gate of Khan Khwar Hydropower Station.Dynamic response results show that both the large radial gate and the flap gate shun the high-energy zone of flow frequency and this can avoid the self-excited vibration caused by the similar vibration frequency.On the other hand,the acceleration of vibration is closely related to the form and distribution of the water seal; the high dynamic stress and acceleration should be avoided when possible.

关 键 词：弧形闸门 舌瓣门 流激振动 水弹性模型 

分 类 号：TV323[水利工程—水工结构工程]