陶板幕墙抗震性能振动台试验研究

Shaking table test on seismic behavior of ceramic plate curtain wall

通过钢框架外挂足尺陶板幕墙模型的振动台实验,研究了陶板幕墙的抗震性能。实验中分别输入El-Centro地震波、人工波及0.5～50Hz的白噪声波。实验结果表明,最大层间位移角为1/237,表明陶板幕墙系统具有良好的抗震性能,符合抗震设计要求。实验过程中,输入同样加速度的El-Centro地震波、人工波后便输入白噪声波,以检测结构自振频率的变化,最后拟合出频率变化曲线,发现当地震加速度达到300Gal以后,结构自振频率基本不再变化。

This article studies on seismic performance of a ceramic plate curtain wall by shaking table of a steel frame hanging a full scale ceramic plate curtain wall model. In the test, E1-Centro seismic waves, artificial wave and 0.5 -50Hz white noise wave were inputted. Results show that the maximum story drift angle is 1/237, it means that the seismic performance of ceramic plate curtain wall system is good , it satisfies the seismic design requirements. In the test, the white noise wave was inputted just after the E1-Centro seismic waves and artificial wave which have the same acceleration to detect the changes in the natural frequency of structure. Finally, we fitted out the frequency curve, and it shows that when the earthquake acceleration reaches 300 Gal, the natural frequency of the structure is no longer changeable.