利用环境振动测定了深圳金融中心大厦原型结构的自振特性,用选频滤波法确定了结构高阶振动的频率和振型,计算了阻尼比。发现结构振型包含弯曲和剪切两种形变;填充墙在微幅振动时有较大刚度,在脉动状态下,填充墙的刚度对结构动力特性影响十分显著。 The vibration characteristics of prototype structure of Shenzhen Financial Center Building were measured by environmental vibration. The frequency and mode shape of high-order vibration of structure were determined by frequency-selective filtering, and the damping ratio was calculated. It is found that the structural modes include both deformations of bending and shearing. The infilled walls have greater rigidity when vibrating slightly. Under the pulsating condition, the stiffness of infilled walls has a significant influence on the dynamic characteristics of the structure.