摘要
水电站机组运行时产生的各种激振力诱发的振动能量很大,将会直接影响作为机组支撑体系的厂房结构,严重时会直接威胁到厂房结构安全。为此,基于线弹性动力有限元计算理论,利用有限元计算软件ANSYS建立某水电站地下厂房三维有限元模型,对其进行了动力计算,主要研究了内源振动对厂房结构的影响。研究结果表明,机组振动荷载对楼板、风罩机墩等部位作用较明显,该厂房整体结构能够满足水电站安全运行的要求。
The vibration energy generated by sorts of exciting force owing to the operation of hydropower generating units is quite large. It will directly affect powerhouse structure which is the support system of units and even seriously threaten powerhouse structure safety. Based on linear elastic dynamics finite element calculation theory, the FEM software ANSYS is utilized to establish three-dimensional finite element model of a underground powerhouse, and the dynamic calculation for powerhouse model is carried out to research endogenic vibration＇s effect on powerhouse structure. The result indicates that the effects of unit vibration load are obvious on the floor, the wind shield and the generator pier, while the overall powerhouse structure can meet the requirements of safe operation of hydropower station.
出处
《水力发电》
北大核心
2017年第2期44-46,103,共4页
Water Power
关键词
地下厂房
内源振动
振动反应
有限元法
underground powerhouse
endogenic vibration
vibration response
finite element method
