工程结构中的二次共振分析

Analysis of Resonance Vibration in Engineering Structures

在建筑结构中,突出物的质量和刚度与主体结构相比非常小。当主体结构的刚度k1远远大于突出物的刚度k2,主体结构的质量M1远远大于突出物的质量M2,且k1／k2与M1／M2相接近时,容易发生二次共振。分析了各种振动产生的二次共振现象,提出了为避免二次共振所应采取的措施。

In building structures, the quality and stiffness of outshoot are very small compared with the main structure. When the quality and stiffness of outshoot are far larger than those of the main body, and k1/k2 approaches M1/M2, second-order resonance vibration happens. This paper analyzes the phenomenon of second-order resonance vibration in different occasions and prorides the methods to avoid it.