This study was carried out for the purpose of improving the heavy floor impact sound insulation performance in a wooden building. Performs a real-scale experiment of long-span structure wooden construction with a large cross-section laminated lumber, we have proposed a floor cross-section specifications of each heavy floor impact sound insulation performance rank from the result.
This study, supported specifications that can achieve the L-60 with high rigidity system in, which is same performance of heavy floor impact sound insulation performance 3rd rank for RC structure. In addition, to achieve the more improved performances, L-55 can perform by vibration-proof system with wooden structure.
Moreover, to the sound-absorbing ceiling space, increasing the ceiling mass, and to damping the ceiling has been found to be effective. These performance measures to improve, it was found that the floor impact sound insulation performance sufficiently comparable to the concrete can be realized.
In the future, in the high rigidity structure system, we want to advance the research of better adhesion method of the members and the panel integrated construction method. Also, in the vibration-proof structure system, we want to further advance the study of the selection of the buffer material and the setting of natural frequency. Then, conclude the floor structure specification list for achieve stabled better performances.
