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为了减小双向偏心结构的地震响应,采用悬吊质量板对此结构进行振动控制。讨论了结构在有无悬吊质量板情况下的自振特性。通过数值计算,证明了悬吊质量板对结构平动和扭转震动都有控制作用,当悬吊质量板震动频率接近结构震动基频时,对于结构平动和扭转震动的减震效果最大可分别达到37.2%和54.4%。基于悬吊质量板简单、经济、易于实施等优点,可将其作为偏心结构扭转震动的有效控制措施。
In order to reduce the seismic response of the bi-directional eccentric structure, a suspension mass plate is used to control the vibration of the structure. The natural vibration characteristics of the structure with or without suspended mass plates are discussed. Numerical calculation shows that the suspended mass plate has the control effect on the translation and torsional vibration of the structure. When the vibration frequency of the suspended mass plate is close to the fundamental vibration frequency of the structure, the damping effect on the translational and torsional vibration of the structure can be maximally different Reaching 37.2% and 54.4%. Based on the simple, economical and easy to implement suspension mass plate, it can be used as an effective control measure to reverse the vibration of eccentric structure.