采用振动台进行3维单层板系统的动力分析

在几组地面运动作用下，采用振动台对预制的3维夹芯板单层建筑进行足尺动态试验。研究的目的是获取所描述系统在动态荷载下的抗震性能，例如，线性和非线性结构特征、可塑性、刚度退化、破坏机制。通过分析，得出固有频率、振动模式及试验与数值分析结果的对比。此外，对横向变形采用试验方法进行测量并与数值计算结果比较；安装加速计测量两个正交方向的加速度。结果显示，对于强地震，3维夹芯板系统具有相当大的抵抗作用。其抵抗强地震的主要原因为：1）高出按抗震设防烈度设计的结构强度。2）非弹性变形引起较小的能量耗散。3）在基准地面运动下，峰值位移都在允许范围内。对循环推覆荷载的分析显示，模型结构的位移延展比为4．50，强度系数约为6．0。

Dynamic Behaviour of 3D-Panel Single-Storey System Using Shaking Table Testing

In the present investigation, a full-scale dynamic test of a single storey building constructed on a shaking table by a prefabricated 3D sandwich panel method is carried out under several ground motions. Objectives of the study are to obtain seismic performances of the described system under dynamic loading, such as linear and nonlinear structural characteristics, deformability, stiffness degradation and failure mechanism. In analysis, the primary frequencies, vibration modes and comparison of the results o...