Establishment of Measurement Analysis System and Evaluation of Insulation Performance for Wooden Floor Impact Sound

Autor: Tsai, Yueh-hen, 蔡玥涵
Rok vydání: 2012
Druh dokumentu: 學位論文 ; thesis
Popis: 101
In recent years, global trend is the concept of green, wooden building to comply with environmental sustainability is one of the green build. Increasing complaint cases of households of the Environmental Protection Department is not difficult to find residents to pay more and more attention to environmental quality. Particularly, the light wood structure floor impact sound than the heavy slab RC structure as a serious, therefore, wooden floor impact sound reduction is an important issue. This study established NPUST Acoustics Laboratory refers CNS 15160-1 and building wooden floor impact sound laboratory methods of measurement and analysis system based on CNS 15160-11 and CNS 8465-2. Discuss a variety of different surface materials of the change due to the impact on the floor impact sound. The results showThis laboratory sound room background noise by 10 dB below；and the sound pressure distribution in distance of only 2.9 dB maximum so that laboratory is a uniform sound field。Buffer material can be improved 2 ~ 4 dB on lightweight impact source and can also improve 5 ~ 15 dB on weight impact source. Increasing elevated angles and without buffer material, light impact source can be improved 2 ~ 3 dB and weight impact source can be not improved；damping material can be improved light impact source 4 ~ 7 dB, improving weight impact source 9 ~ 14 dB；fill material can improve the light impact source about 1 ~ 2 dB, weight impact source can improve 2 ~ 3 dB. Comprehensive evaluation results can be learned that undering the changes of buffer material、elevated angles、damping material and fill material, the maximum amount of improvement on light impact source can be improved 20 dB，weight impact source can be improved 23 dB.
Databáze: Networked Digital Library of Theses & Dissertations
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