摘要
以阿海水电站厂房结构为例,采用定性判别和定量分析两种方法评价了厂房结构抗振安全性,首先分析计算了主、副厂房及楼板等局部结构的自振特性,然后分析了3种潜在振源(机械、电磁、水力)的频率特性,并按共振校核法对厂房结构抗振安全性作出了定性判别,最后将机组水力激振作用下的厂房振动简化为简谐振动系统,采用逐步积分法定量计算了厂房结构的动力响应,所得结果可为厂房抗振设计提供参考。
Taking power house structure of Ahai hydropower house for an example, qualitative and quantitative analysis of the anti-vibration safety of hydropower house structure is implemented. Firstly, the natural vibration characteristics of the main and auxiliary station house structure and the floor are analyzed. Secondly, this paper studies the frequency characteristics of three potential vibration sources （machinery, electromagnetism, hydraulic） and evaluates qualitatively the anti-vibration safety of the house structure with resonance check method. And then, a harmonic vibration model is proposed to simulate hydraulic exciting vibration. Finally, dynamic response of power house structure is calculated with step-by-step integration method. The numerical results can provide references for vibration design of hydropower house.
出处
《水电能源科学》
北大核心
2012年第1期93-95,共3页
Water Resources and Power
关键词
振动
共振校核
动力响应
阿海水电站厂房
vibration
resonance check
dynamic response
Ahai hydropower house
