摘要
为探究流激振动对闸门启闭力的影响机理,通过对固定的上、下游水位和底缘形式的平板闸门进行流固耦合分析,结果表明引起闸门振动的激振力和由闸门振动位移产生的摩擦系数和摩擦力臂的变化是造成启闭力变化的主要原因。在前人统计的闸门振动较大的不利开度的基础上,利用波形合成法以及振动理论提出作用于闸门面板上的激振力的计算公式,并考虑其对闸门启门摩擦系数、摩擦力臂以及启门摩擦力的影响,总结出流激振动效应下平板闸门启门力的计算方法。通过与石泉水电站中孔平板闸门启门力实测资料对比发现,理论计算的结果与实际工程的实测值吻合良好,可为实际工程的启闭力计算提供一定的科学依据。
In order to explore the mechanism of the influence of flow-induced vibration on the opening and closing force of the gate,the fluid-solid coupling analysis of the plane gates in the form of fixed upper and lower water level and bottom edge showed that the exciting force causing the vibration.The variation of friction arm and coefficient of friction caused by vibration displacement of the gate were the main causes of the change of the opening and closing force.On the basis of the unfavorable opening degree of the gate vibration calculated by the predecessors,the calculation formula of the exciting force acting on the gate panel was proposed by the waveform synthesis method and the vibration theory.The friction coefficient and friction force of the gate were considered in the calculation method of the opening force of the plane gates under the effect of the flow vibration.Comparing with the measured data of the middle plate of the Shiquan Hydropower Station,the theoretical calculation results were in good agreement with the actual measured values,which can provide a scientific basis for the calculation of the opening and closing force of the actual project.
作者
刘朋
徐国宾
LIU Peng;XU Guobin(State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300354,China)
出处
《南水北调与水利科技（中英文）》
CAS
北大核心
2020年第1期144-149,175,共7页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金(51779166)。
关键词
平板闸门
流激振动
激振力
启门力
flatgate
flow-induced vibration
exciting force
opening force
