荒沟抽水蓄能电站拦污栅流激振动试验研究及有限元分析  

Experimental study and finite element analysis of flow-induced vibratio of the trash rack of Huanggou pumped storage power station

作　　者：王美懿[1] 尹明玉 张羽[3] 王剑峰 WANG Mei-yi;YIN Ming-yu;ZHANG Yu;WANG Jian-feng(China Water Northeastern Investigation,Design&Research Co.,Ltd.,Changchun 130061,China;Ministry of Water Resources,Songliao Water Resources Commission,Changchun 130021,China;Earthquake Administration of Jilin Province,Changchun 130117,China)

机构地区：[1]中水东北勘测设计研究有限责任公司,长春130061 [2]水利部松辽水利委员会,长春130021 [3]吉林省地震局,长春130117

出　　处：《南水北调与水利科技》2017年第A02期186-190,共5页South-to-North Water Transfers and Water Science & Technology

摘　　要：为确保荒沟抽水蓄能电站拦污栅在双向水流的作用下能安全运行,避免因出现强烈的流激振动而破坏,通过建立1∶15的水弹性模型,开展了拦污栅流激振动试验,测试了不同工况下关键部位的振动应力,分析了振动特性,估算了疲劳年限,并在试验基础上开展了有限元分析。结果表明:在严格保证施工质量的基础上,拦污栅不会因流激振动产生疲劳破坏;栅叶发生较大流激振动的概率很小,但单扇拦污栅在动水压力激励下的振动响应尚需进一步研究;有限元计算结果与实测结果基本一致,成果可靠,可以作为确定拦污栅设计方案的依据。In order to ensure the safe operation of the trash rack of Huanggou pumped storage power station under the effect of the two-way flow,to avoid the damage caused by the strong flow-induced vibration,the flow-induced vibration test of the trash rack was carried out through establishing hydroelasticity model on the scale of 1:15.Under different conditions,the vibration stress of key parts was tested,the vibration characteristics were studied,the fatigue life was estimated,and the finite element analysis was carried out On the basis of experiment.The results showed that the trash rack couldn’t appear fatigue damage by flow-induced vibratio on the basis of strict control of construction quality,the probability of big intensity of flow-induced vibratio appearing on trash rack paling would be very small,vibration response of single leaf trash rack under the action of dynamic water pressure still needs further research,and the finite element analysis compared well with measured values,which showed that the result was reliable,it could be used as the basis for establishing the design project of the trash rack.

关 键 词：荒沟 抽水蓄能 拦污栅 流激振动 模型试验 有限元 

分 类 号：TV743[水利工程—水利水电工程]