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曹娥江大闸工作闸门跨度大,门型采用拱形桁架式结构,设计具有创新性.闸门具有正向挡水泄洪排涝、反向挡潮等功能.本项研究针对钱塘江特有的强涌潮作用特征,利用水动力荷载模型、水弹性振动模型以及三维数值计算模型相结合的方法,系统研究了闸门结构的受力特性、涌潮荷载作用下的响应特性,揭示了存在问题,并进行了抗振优化设计,提出的优化方案,显著改善了闸门结构的抗振性能,确保了工程安全.原型观测结果显示,闸门结构最终推荐方案具有振动响应小,抗振能力强等优点,取得满意效果.
The work gate of Cao’e River Sluice has a large span and the door type adopts the arched truss structure, and the design is innovative. The sluice gate has the functions of forward water diversion and drainage, water diversion and reverse tide, etc. This study aims at the special strong tide effect of Qiantang River The characteristics of the gate structure and the response characteristics under the tidal load were systematically studied using the hydrodynamic load model, the hydro-elastic vibration model and the three-dimensional numerical calculation model. The problems were revealed and the resistance The optimized design of the vibration and vibration optimization of the gate structure significantly improve the anti-vibration performance of the gate structure and ensure the safety of the project.The prototype observation results show that the final recommended structure of the gate structure has the advantages of small vibration response and strong anti-vibration capability, and achieves satisfactory results.