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对某水利枢纽溢洪道超大型工作弧门流激振动问题,应用实验模态分析方法研究弧门的结构动力特性,提出了结构设计优化方案,分别通过水工模型、水弹模型试验研究弧门振动的激励荷载特性与流激振动响应,取得满意结果。研究结果表明,弧门结构提高了抗振能力。在上水良好、避免停留0.6开度―0.7开度、规范操作等条件下弧门不至于产生危害性振动。
For the vibration excitation of large working arc gate of spillway of a water complex, the structural dynamic characteristics of the arc gate are studied by the experimental modal analysis method. The optimization design of the structure is proposed, and the hydraulic gate vibration The excitation load characteristics and the flow vibration response, and achieved satisfactory results. The results show that the arc door structure improves the anti-vibration ability. Good in Sheung Shui, to avoid leaving the 0.6 opening -0.7 opening, standard operation under conditions such as the arc will not produce harmful vibration.