中文摘要：

随着我国大型抽水蓄能电站建设的快速发展,地下厂房结构动态设计日益成为设计运行中的关键课题,而水力振动是高水头电站的重要特征。本文以宜兴抽水蓄能电站为实例,在自振特性分析和共振复核的基础上,研究水轮机流道结构内部压力脉动试验结果的幅频特性、相似关系以及施加方式,重点对地下厂房的水力激励振动反应作系统分析,从振动位移、速度、加速度和动应力加以复核评价,以期对水力激发厂房振动的机理和分析评价方法有准确的掌握。

英文摘要：

The dynamic design becomes a key technique for the construction and operation of powerhouse structures in China, along with the fast development of large pumped-storage projects. In comparison with a general turbine, hydraulically-excited vibration is quite remarkable, as the working head and running speed of the pumped-storage turbines are much higher. This paper describes the model test results of turbine vibration for the Yixing Pumped- storage Project, and discusses the similarity law and the structures of pressure fluctuations in the spiral case and draft tube, and then, presents a three-dimensional FEM simulation of the dynamic responses under hydraulic excitation, including displacement, velocity, acceleration and stresses. Finally, a vibration evaluation is made according to the criteria of powerhouse structure vibration.