Vibrating response of a residential structure to blast based on HHT

To test characteristics of a structural response to blast vibration of ground, detonative tests were conducted on a newly constructed residential structure. By using Hilbert-Huang transformation (HHT), the spectral characteristics of vibrations of the structure were analyzed compared to those on ground surface adjacent to the foundation. It was shown that the vibrating amplitude of the structure is amplified compared with the ground motion in the frequency range close to the natural frequencies of the structure; amplification ratio relates to the distance between the blast hole and the structure, and the monitoring height; with the same height, the vibration of a brick-cement wall reinforced with carbon fiber boards is obviously attenuated, the vibrating amplitude of a wall covered with carbon fiber plates is lower than 1/2 times of that of a common wall.