三峡大坝深孔工作闸门流激振动特性研究
Study on fluid-induced vibration characteristics of deep-hole gate of Three Gorges Dam
童广勤 1张海龙 1李奇 2伍友富 2齐文强2
作者信息
- 1. 高坝大库运行安全湖北省重点实验室,湖北 宜昌 443100;中国长江三峡集团有限公司 流域枢纽运行管理中心,湖北 宜昌 443100
- 2. 长江勘测规划设计研究有限责任公司,湖北 武汉 430010
- 折叠
摘要
为深入探究三峡大坝深孔弧形工作闸门运行时的流激振动特性,对其进行了原型观测研究.结果表明:在闸门启闭动态运行时,其动位移极值和加速度极值都相对较小,振动较小;在启门、停门瞬间,闸门的动位移极值和加速度极值都明显增大,振动较大;当闸门开度在0.6～0.7 时,闸门发生了强迫振动;1 号、12 号深孔弧形闸门在运行时都不同程度受到了流激振动的影响,但都属于微小或中等振动,处于安全范围内.相关成果可供大坝安全运行管理及闸门设计制造参考.
Abstract
In order to deeply explore the flow-induced vibration characteristics on the deep-hole radial working gate of the Three Gorges Dam during operation,prototype observation study was carried out.The time-history analysis and spectrum analysis results showed that when the gate was opened and closed dynamically,the extreme values of vibration dynamic displacement and acceleration were relatively small,and the vibration was small.At the moment of opening and stopping,the dynamic displacement extreme value and acceleration extreme value of the gate increased obviously,and the vibration was large.When the gate opening was 0.6～0.7,the forced vibration of the gate occurred.The No.1 and No.12 deep hole radial gates were affected by flow-in-duced vibration to varying degrees during operation,which was small or medium vibration in the safe range.The relevant results can be used as reference by dam safety operation personnels.
关键词
流激振动/深孔弧形闸门/时程分析/频谱分析/三峡大坝Key words
flow-induced vibration/deep-hole radial working gate/time-history analysis/spectrum analysis/Three Gor-ges Dam引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据