水轮机压力脉动诱发厂房振动分析  

Vibration analysis of power house due to the pressure pulsation of hydro-turbine

作　　者：陈婧[1] 马震岳[1] 刘志明[2] 谢红兵[2] 杜申伟[2] 

机构地区：[1]大连理工大学,辽宁大连116024 [2]长江水利委员会设计院,湖北武汉430010

出　　处：《水力发电》2004年第5期24-27,共4页Water Power

基　　金：高等学校博士学科点专项科研基金资助项目(20030141018)

摘　　要：对于巨型水轮机压力脉动诱发的厂房结构振动,研究了模型水轮机压力脉动的时域和频率特征以及原型与模型间的相似关系;利用动力时程分析法计算了结构在水力激励下的振动反应,分析探讨了压力脉动不同分布特性对振动强度的影响,进行了压力脉动幅值的敏感性分析;最后,借鉴国内外相关振动规程,对厂房振动加以评价。The turbine's vibration would induce the serious vibration of powerhouse structure. Based on the model test results the dynamic characteristics of the pressure pulsation in the range of time and frequency were studied. The similarity law between prototype and model turbine was discussed.A transient vibration model was proposed to study the dynamic responses of the structure under the hydraulic exciting force of the turbine. The effects of the pressure distribution and the pressure amplitude were analyzed.The numerical results are evaluated based on the respected regulations.

关 键 词：厂房 振动 数值分析 压力脉动 

分 类 号：TV731[水利工程—水利水电工程] TU311.3[建筑科学—结构工程]