脉动水压力作用下的水电站地下厂房振动反应分析

Vibration Response Analysis of the Underground Powerhouse of Hydropower Station under the Action of Fluctuating Water Pressure

以吉林省敦化抽水蓄能电站地下厂房为例,建立3#机组段的三维有限元模型,根据厂家提供的模型试验资料分为发电工况和抽水工况分别计算地下厂房在蜗壳及尾水管流道内脉动水压力作用下各关键部位的动位移、动应力、加速度和速度响应,结果表明,以上响应的数值均满足限值要求。

Taking the underground powerhouse of Dunhua Pumped Storage Power Station in Jilin Province as an example, a three-dimensional finite element model of the 3# unit section is established. According to the model test data provided by the manufacturer, the power generation conditions and the pumping conditions are respectively calculated to calculate the underground building in the volute and the draft tube. The dynamic displacement, dynamic stress, acceleration and velocity response of each key part under the pulsating water pressure in the flow channel show that the above response values all meet the limit requirements.