泄流诱发水工结构振动问题的综合集成研讨

Comprehensive compound method for flow-induced vibration of hydraulic structures

以高拱坝泄洪振动为背景,对从水工、水弹性模型到数值模型,从模糊模型到原型观测的广泛研究进行综合概括,探讨大流量泄洪诱发水工建筑物(泄洪拱坝、导墙、挑溢流厂房、闸墩)的振动问题。指出应用水弹性模型和计算机"复合模型"方法最为合理,可达到从定性到定量的转变。表述对大型水利工程(三峡、二滩、小湾、构皮滩、溪洛渡、向家坝等水电站)大流量泄洪振动实际有关的研究,以水弹性模型为主导,以数值为配合,以原型观测为验证的方法是合适的。认为综合集成方法比较符合大型系统的研究。

Based on the flow-induced vibration of high arch dams, a comprehensive review on the broad research field including hydraulic models, hydroelastie models and numerical models as well as fuzzy models and prototype measurements was made. The flow-induced vibration owing to large discharge flood release of hydraulic structures such as arch dams, guide walls, jet-over powerhouses and piers was discussed. It was put forward that the compound model based on the hydroelastic models and numerical models was the most reasonable, and would realize the transformation from qualitative analysis to quantitative analysis. With regard to the studies on the flow-induced vibration of some large hydropower station projects such as Three Gorges, Ertan, Xiaowan, Goupitan, Xiluodu and Xiangjiaba, the following procedures were satisfactory： the hydroelastic models were mainly employed in combination with the numerical models, and the prototype measurements were employed for validation. A conclusion is drawn that the comprehensive compound method is more appropriate for the studies on large projects.