한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2010년도 춘계학술대회 논문집
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- Pages.527-528
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- 2010
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- 1598-2548(pISSN)
완충재의 동특성에 따른 중량충격음 증폭에 관한 해석적 연구
The effect of dynamic property of absorbing sheet on the amplification of heavy weight floor impact noise
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황재승
(전남대학교 건축학부) ;
-
문대호
(서울대학교 건축학과) ;
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박홍근
(서울대학교 건축학과) ;
-
홍성걸
(서울대학교 건축학과) ;
-
홍건호
(호서대학교 건축공학과) ;
- 임주혁 (삼성물산 건설부문) ;
- 김용남 (삼성물산 건설부문)
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Hwang, J.S.
;
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Moon, D.H.
;
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Park, H.G.
;
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Hong, S.G.
;
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Hong, Geon-Ho
;
- Lim, J.H. ;
- Kim, Y.N.
- 발행 : 2010.05.11
초록
Previous experimental results performed by many researchers for a couple of decades in South Korea have shown that an absorbing sheet inserted in a conventional floating slab system for thermal insulation or vibration absorption may amplify the vibration of the slab system at specific frequency ranges depending on the material properties of the sheet. The amplified vibration, consequently, results in the heavy weight floor impact noise exceeding the sound level limit for an apartment house, 50dB. In this study, the amplification mechanism is examined through numerical analysis and a new slab system is proposed to reduce the amplification and control the noise. The new slab system consists of studs connecting the base slab and upper concrete finishing yielding the dramatically increased stiffness of the slab. The numerical simulation is performed to investigate the effect of the slab system with studs on the vibration and noise control. The results show that the performance of the slab is sensitive to the number and location of studs, and the heavy weight floor impact noise can be reduced up to 6-7dB compared to the conventional slab system at the optimal stud location.
키워드