三峡水电站主厂房振动分析  

Dynamic analysis of Three Gorges hydropower house

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,大连116024 [2]长江水利委员会设计院,武汉430010

出　　处：《水力发电学报》2004年第5期36-39,21,共5页Journal of Hydroelectric Engineering

基　　金：教育部高等学校博士点专项科研基金 (2 0 0 30 1 4 1 0 1 8)

摘　　要：三峡水电站水轮发电机组是目前国际上正在建设的巨型机组。在水轮机模型试验中 ,发现存在一个特殊压力脉动区 ,压力脉动幅值超过标书的规定 ,可能会对厂房振动产生不利影响。为此 ,本文进行了主厂房整体模型的振动分析数值模拟 ,研究了主厂房的固有振动特性并进行共振复核 ;研究了机墩结构在各种动力载荷作用下的振幅和应力 ;利用动力法计算厂房在水力激励作用下的振动反应 ,根据国内外有关振动规程 ,对振动加以评价 。In the design and manufacture stage of the turbine for the Three Gorges Power Station, it is found in the model test that the hydraulic pressure pulsation exceeds the limitations in a special pressure pulsation zone near the full load. The turbine vibration would induce the serious vibration of powerhouse structure. So numerical simulation model of vibration analysis is established to study the vibration characteristics and the resonation of the power house. The vibration amplitudes and stresses of the pier structure are calculated too. The harmonic and transient vibration models are proposed to study the dynamic responses of the structure under the hydraulic exciting force of the turbine.The numerical results are evaluated based on the respected rules and regulations.

关 键 词：水利水电工程 厂房振动 数值模拟 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]