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高水头泄水建筑物泄水时 ,其固体表面必然要承受水流脉动压力作用。在其边界发生突变的部位 ,观测并分析脉动压力及其频率变化特性对建筑物安全运行具有一定的重要作用。本文根据东风水电站溢洪道原型观测资料 ,对其鼻坎脉动压力特性进行了分析 ,并在分析的基础上 ,结合模型试验资料 ,对已有的关于脉动压力及其频率相似性问题谈了一些自己的意见。希望能为工程设计和试验提供一点参考依据。
When a high head drainages a building to discharge water, its solid surface will inevitably have to withstand the effects of fluctuating water pressure. Observing and analyzing the fluctuating pressure and the frequency variation characteristics of the site where the mutation occurs at the boundary plays an important role in the safe operation of the building. Based on the prototype observation data of the spillway of Dongfeng Hydropower Station, the pulsatile pressure characteristics of the nose ridge were analyzed. Based on the analysis and the model test data, some existing problems about the pulsating pressure and its frequency similarity were discussed opinion. Hope to provide some reference for engineering design and test.