内部干扰引起某宿舍楼共振分析

Analysis of Resonance of a Building Caused by Internal Disturbance

对广州某宿舍楼的晃动现象进行了分析,通过现场调研和采用微震观测设备检测分析后指出:由于该楼房主供水管道在供水时的管道振动频率与宿舍楼自振频率接近,从而引起共振现象,导致了楼体的摇晃,并提出了解决该楼房晃动的方法。最后得出结论:当建筑物的自振周期与几个振源相同或接近时,建筑物会发生晃动,可以通过改变建筑物的自振频率或振源的振动频率,避免共振的发生。

In this paper, the shaking phenomenon of a dormitory in Guangzhou is analyzed. Through investigation and examination by microseism scope, point out that the vibration frequency of the main water supply pipes in the dormitory is close to the dormitory＇s natural frequency. Thus causes the resonating and leds to the shaking of the building. And gives methods to the question. Finally draws the conclusion： when building＇s self oscillation cycle inspires are same or close to the source, the building may be shake. In order to prevent the resonance, we can change the building＇s base frequency or the vibrational frequency of sources.