Vibration and Acoustic Coupling Test and Analysis of High-Rise Glulam Building Floor Structure

Abstract

To better meet the objective requirements such as the living comfort of residents of high-rise glulam buildings, this paper uses air-borne sound insulation and impact sound insulation testing methods to carry out the measurement and analysis of sound insulation performance of the floor structures of glulam buildings. Environmental excitation and artificial excitation were used to carry out acoustic-vibration coupling experiments and analysis of the floor structure, and the living comfort of the glulam building was evaluated. The research conclusion shows that: due to the gaps in the floor structure, sound insulation valleys appear at 125 Hz and 200 Hz. The impact sound insulation performance of glulam building floors is better than the air-borne sound insulation performance. The steady-state walking excitation method can produce low-frequency vibrations of the floor structure. Under the steady-state running excitation mode, the frequency range of acoustic-vibration coupling is expanded. The correlation between floor vibration and noise is greatest under the rubber hammer continuous tapping mode among artificial excitations. This study can provide a useful reference for the optimization design and test of vibration performance of glulam building floors in the future.