Flanking floor impact sound insulation in cross laminated timber model building for experiment

The Act for Promotion of Use of Wood in Public Buildings (Law No. 36 of 2010 of Japan) was enforced in 2010. The promotion of the use of wood can contribute to the prevention of global warming etc. A public building in a low layer is supposed to attempt making to timber construction by this act. Mor...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-08, Vol.1075 (1), p.12023
Main Authors: Hiramitsu, A, Otsuru, T, Tomiku, R, Harada, K
Format: Article
Language:English
Subjects:
Acoustic insulation
Ceilings
Cross laminating
Damping
Floors
Houses
Physics
Public buildings
Timber construction
Vibration
Weight reduction
Wood laminates
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Summary:The Act for Promotion of Use of Wood in Public Buildings (Law No. 36 of 2010 of Japan) was enforced in 2010. The promotion of the use of wood can contribute to the prevention of global warming etc. A public building in a low layer is supposed to attempt making to timber construction by this act. Moreover it is expected that the building such as apartment houses comes to be made from timber construction. For effective use of the Japanese wood, CLT (Cross Laminated Timber), which had been used in Europe, was standardized by JAS (Japanese Agricultural Standard) as a building material in 2014. Among the objections and the troubles of buildings in Japan, the sound insulation performance is one of the most serious issues, especially floor impact sound insulation. We, however, have little knowledge about sound insulation of CLT building. Therefore we built a 3-story CLT model building for experiment and investigated the floor impact sound insulation and the flanking floor impact sound insulation. This paper presents the results of floor impact sound insulation and the surfaces vibration in a sound-receiving room. The results showed the influences of damping material, ceiling and floating on the floor impact sound insulation, and the floating floor showed possible improvements in the heavy-weight and the light-weight floor impact sound insulation of CLT building. The vibration velocity level of the ceiling was the largest. However, it is necessary to decrease the vibration velocity level of the sound-receiving room's wall for improvement of the heavy-weight floor impact sound insulation by using damping material.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1075/1/012023