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김하근(Kim, Ha-Geun),주시웅(Joo, Si-Woong) 한국소음진동공학회 2007 한국소음진동공학회 논문집 Vol.17 No.11
A construction noise is the main reason for people's petition among the pollution. The purpose of this study is to develop the noise prediction program to see the level of the noise on the construction site more accurately. For this purpose, the database of the power level on the various equipments was made. The noise reduction by distance and the noise reduction by diffraction of barrier were mainly considered and calculated. The simple noise prediction program will provide the information about proper height and length of the potable barrier which satisfies noise criteria of the construction sites from a construction planning stage. To investigate the reliability of this program, the predicted data was compared with the measured data. An average of difference between measured data and predicted data is $0.1{\sim}2.8\;dB(A)$ and a coefficient of correlation is about $0.85{\sim}0.95$.
공동주택 실외기실 인접실의 투과소음 예측 및 저감방안에 관한 연구
남정현(Jung-Hyun Nam),주시웅(Si-Woong Joo),손원득(Won-Tug Son),신지웅(Jee-Woong Shin) 대한설비공학회 2011 대한설비공학회 학술발표대회논문집 Vol.2011 No.7
The purpose of this analysis is to review whether an adjacent room to an external unit room of apartment buildings secures amenities of sound environment. To achieve this, this study suggests suitable criteria based on research about domestic and foreign standards for indoor noise. Also, this aims at showing the effect of noise reduction by simulation analysis on before and after installing the noise reduction control and reviewing the satisfaction of related noise standards.
친환경 주거단지 조성을 위한 도로교통소음 저감영향 요인 분석
김흥식(Heung-Sik Kim),주문기(Moon-Ki Joo),주시웅(Si-Woong Joo) 한국생활환경학회 2005 한국생활환경학회지 Vol.12 No.4
To reduce the road traffic noise is an important design factor for environment friendly housing estate. In this study, several experiments on the road traffic noise reduction factors which are noise reduction effects of noise barrier, sound isolation tunnel, distance, types of building layout and road in the housing estate are carried out at field. As the result, the noise reduction of noise barrier is limited under 5th floor of building at the even lay of the land, and according to the increasement of 5th floor height, the noise level of 1~2 ㏈ is increased because of the sound refraction effect by the temperature and reflection of surrounding buildings. The noise reduction of sound isolation tunnel is effected by the transmission loss of pannel, and the noise reduction of 4 ㏈ is generated in addition to the high level road. Through the measurement by types of building layout, c shaped layout or parallel layout has the advantage of sound insulation rather than right angled layout. The noise reduction level according to the distance from road is 2.6~4.7 ㏈ as long as a double distance at field. By the measurement of noise reduction effect by the types of road, S shaped road is recommended to reduce the noise in the housing estate because it makes decrease the vehicle speed. In this case, the noise reduction effects are 1~2 ㏈ 15° sloped "S" shaped road type 4~7 ㏈ at 30° sloped "S" shaped road type. These results are expected to be used as the fundamental data of design guideline for environment friendly housing estate.