论文部分内容阅读
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 the plant structure of Ahai Hydropower Station as an example, two methods of qualitative discrimination and quantitative analysis are used to evaluate the anti-vibration safety of the plant structure. First, the natural vibration characteristics of the local structures of main and auxiliary plants and slabs are analyzed and analyzed. And the vibration characteristics of the potential vibration sources (mechanical, electromagnetic, hydraulic) are qualitatively identified. The vibration-proof safety of the plant structure is qualitatively identified according to the resonance checking method. Finally, the vibration of the plant under hydraulic excitation is reduced to a simple harmonic vibration system. The dynamic response of the plant structure is calculated quantitatively by using the method of stepwise integration. The obtained results can provide a reference for the anti-vibration design of the plant.