调水工程分层取水口控流平面钢闸门流激振动特性研究  

Study on Flow-induced Vibration Characteristics of Flow Control Plane Steel Gate at Layered Water Intake in Water Diversion Engineering

作　　者：井向阳 吴穹 刘圣凡 傅兴安 林勇华 JING Xiang-yang;WU Qiong;LIU Sheng-fan;FU Xing-an;LIN Yong-hua(Shenzhen Raw Water Co.,Ltd.,Shenzhen 518000,China;Changjiang River Scientific Research Institute,Wuhan 430010,China;Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China)

机构地区：[1]深圳市原水有限公司,广东深圳518000 [2]长江科学院,湖北武汉430010 [3]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《水电能源科学》2024年第9期139-142,共4页Water Resources and Power

摘　　要：随国家水网工程建设,调水工程分层取水口安全变得尤为重要。在分层取水口闸门控流时闸后可能存在明流、淹没流等不同流态,导致闸门存在不同振动响应特性,需对各流态下的闸门安全进行评估。以某工程为例进行了闸门模态分析及流激振动试验。结果表明,闸后明流、淹没流时振动各参数小于相应标准值;闸后有水跃拍打闸门底部时振动加速度偏大;通过减小过闸流量避开不良流态后振动加速度小于相应标准值。因水力因素导致的振动偏大可通过调度运行方式减小,研究结果可为类似工程提供参照。With the construction of national water network projects,the safety of layered water intake in water diversion projects has become particularly important.During the flow control of the layered intake gate,there may be different flow states such as open flow and submerged flow behind the gate,resulting in different vibration response characteristics of the gate.Therefore,it is necessary to evaluate the safety of the gate under each flow state.Taking a certain engineering project as an example,modal analysis and flow induced vibration tests were conducted on the gate.The results show that the vibration parameters of the open flow and submerged flow behind the gate were less than the corresponding standard values;When there is a water jump behind the gate hitting the bottom of the gate,the vibration acceleration is too high;By reducing the gate flow to avoid adverse flow conditions,the vibration acceleration is less than the corresponding standard value.The excessive vibration caused by hydraulic factors can be reduced through operation mode.The research results can serve as a reference for similar projects.

关 键 词：调水工程 分层取水口 平面钢闸门 流激振动 

分 类 号：TV663[水利工程—水利水电工程]