Identification of heavy-weight impact sound and vibration propagation in multi-story building

초록

Experimental test and simulation were performed to identify the magnitude of vibration and sound transmission in multi-story building. The heavy-impact noise problems are not confined to the adjacent neighborhood. It is connected with entire building structure. In this study, we analyzed the response of the interlayer noise and vibration when heavy-impact occurs somewhere inside structures. Entire 12th building floor response was measured by accelerometers and microphones. The vibration amplitude propagating in different floors was observed and compared in representative level. And the characteristics of heavy impact vibration and sound of building due to load of structure was investigated through the actual experimental methods and scale model test. Actual building experimental result shows the differences vibration characteristics between high-rise and low-rise floor. And scale model experiment found out the cause of difference between each layer depending on the load. In addition, transmission characteristics of vibration power flow between source and receiver structures are simulated through the spectral element method. Vibration and sound generated a high-rise floor are propagated to lowest-rise floor. Even low-rise source are also propagated to highest-rise floor in multi-story buildings.

키워드