SHAKING TABLE TEST OF THE ENCLOSURE WALL MULTIFUNCTIONAL VIBRATION ABSORPTION STRUCTURE

To research the vibration absorption characteristics and effect of the enclosure wall multifunctional vibration absorption structure，the models include steel frame vibration absorption structure and non-vibration absorption structure were made in 1∶ 3 scale，and simulated earthquake shake table test was done． It was studied the dynamic characteristic under different working conditions，as well as acceleration response and displacement response under different seismic excitation El-Centro earthquake waves of the model structure． The results show that numbers of the TMD are related to the nature frequency and control of vibration mode，the vibration absorption structure is very effective for control the acceleration and displacement response，the biggest amplitude of the vibration absorption lies in the top story，and the best effect is got when seismic wave is 4 m/s2 ． The model’s acceleration and displacement reaction of the vibration absorption are evaluated through shock index dynamic magnification coefficient and the rate of vibration reduction，thus showing that vibration absorption structure can get better control effect for the displacement response．