三河口水利枢纽泄洪底孔事故闸门振动分析  

Vibration Analysis of Emergency Gate at Bottom Outlet of Sanhekou Water Control Project

作　　者：苗洲 柯啸 牛闻 Miao Zhou;Ke Xiao;Niu Wen(Shaanxi water conservancy and Electric Power Survey and Design Institute,Xi'an 710010,Shaanxi;Hanjiang-to-Weihe River Valley Water Diversion Project Construction Co.,Ltd.,Shaanxi Province.Xi'an 710010,Shaanxi)

机构地区：[1]陕西省水利电力勘测设计研究院,陕西西安710010 [2]陕西省引汉济渭工程建设有限公司,陕西西安710010

出　　处：《陕西水利》2021年第8期9-13,共5页Shaanxi Water Resources

摘　　要：以三河口水利枢纽泄洪底孔事故闸门作为研究对象,通过CATIA进行整体建模,利用ANSYS进行流固耦合数值模拟计算,根据各种工况进行分析,结果表明:①闸门的开度越大,自振频率越高,且从整体来看,一阶振型为沿吊杆的上下振动,对闸门的影响最大;②水流对闸门的脉动压力频率打开多分布于20 Hz以下,而闸门的自振频率分布于40 Hz以上,所以避开了闸门的共振区域。故三河口泄洪底孔事故闸门的安全可靠性是可以得到保障的。This paper studies the accidental gate of flood discharge bottom hole of Sanhekou Hydraulic Complex.CATIA is used for overall modeling and ANSYS is used for numerical simulation of fluid-solid coupling.According to the analysis of various conditions,the results show that:(1)The larger the opening of the gate,the higher the natural vibration frequency.On the whole,the first-order vibration mode vibrates up and down along the boom,which has the greatest impact on the gate.(2)Fluctuating pressure frequency opening of water flow to the gate is mostly distributed below 20Hz,while the self-vibration frequency of the gate is distributed above 40Hz,thus avoiding the resonance area of the gate.Therefore,the safety and reliability of the emergency gate of the bottom outlet of the Three River Estuaries can be guaranteed.

关 键 词：事故闸门 流固耦合 数值计算 

分 类 号：TV312[水利工程—水工结构工程]