人民黄河2018，Vol.40Issue(3)：115-118,4.DOI:10.3969/j.issn.1000-1379.2018.03.026
机组水平动荷载对机墩振动反应的影响
Analysis of the Effect of Mechanical Horizontal Dynamic Load on Vibration Response of Generator Pedestal
高朦伟 1方朝阳2
作者信息
- 1. 中水北方勘测设计研究有限责任公司,天津300222
- 2. 武汉大学 水利水电学院,湖北 武汉430072
- 折叠
摘要
Abstract
Sorts of exciting force will be generated when hydraulic turbine-generator units are operating. Given that generator pedestal is the main supporting part of unit, exciting force directly manifest loads in various directions acting on foundation, so the vibration of generator pedestal is more obvious than other parts. Establishing three-dimensional finite element model of the underground powerhouse,dynamic cal-culation was applied by using harmonic response method. This paper primarily researched vibration responses of each typical part of generator pedestal under different exerting mode of mechanical horizontal dynamic loads in actual engineering. The result shows that the exerting mode of mechanical horizontal dynamic loads greatly affects the vibration of generator pedestal. According to the practical characteristic of mechani-cal dynamic loads,appropriate exerting mode is suggested to be adopted to take full account of adverse effect produced by vibration of unit.关键词
机组水平动荷载/施加方式/机墩/谐响应法/振动反应Key words
mechanical horizontal dynamic load/exerting mode/generator pedestal/harmonic response method/vibration response分类
建筑与水利引用本文复制引用
高朦伟,方朝阳..机组水平动荷载对机墩振动反应的影响[J].人民黄河,2018,40(3):115-118,4.
