Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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The Analysis of Effect of Surface Shape and Pattern of Noise Barrier Panel on the Noise Reduction

방음벽 전면형상에 따른 소음 효과 분석에 관한 연구

  • Kim, IlHo (Department of Water Resources & Environment Research, Korea Institute of Construction Technology) ;
  • Ahn, Hosang (Department of Water Resources & Environment Research, Korea Institute of Construction Technology) ;
  • Park, Jong-Bin (Department of Water Resources & Environment Research, Korea Institute of Construction Technology) ;
  • Kim, Gwang Soo (Department of Water Resources & Environment Research, Korea Institute of Construction Technology) ;
  • Lee, Ju Haeng (Department of Construction Environment Engineering, University of Science and Technology) ;
  • Ko, Junhee (Department of Environmental Engineering, University of Seoul)
  • 김일호 (한국건설기술연구원 수자원환경연구본부 환경연구실) ;
  • 안호상 (한국건설기술연구원 수자원환경연구본부 환경연구실) ;
  • 박종빈 (한국건설기술연구원 수자원환경연구본부 환경연구실) ;
  • 김광수 (한국건설기술연구원 수자원환경연구본부 환경연구실) ;
  • 이주행 (과학기술연합대학원 건설환경공학과) ;
  • 고준희 (서울시립대 에너지환경시스템 공학과)
  • Received : 2012.11.23
  • Accepted : 2012.12.15
  • Published : 2012.12.30
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Abstract

In recent decades, a lot of noise barriers have been installed along paved road in order to reduce the road induced noise, which increases as traffic volume grows. For better range of sight, transparent noise barriers are widely installed despite of reflecting noise. In this study, the effect of surface shape and pattern of noise barriers on the reduction of reflecting noise was analyzed to maximize the noise reduction. According to the number of shape and pattern, it was observed that there were noise reduction effect as of 0.9~1.5 dB(A). It was found that the spatial field where the noise concentrates or disperses changes according to the width of blocks on the barriers as well. It suggests that there might be possibility of surface shape modification to optimize the noise reduction technology.

도심의 교통량의 증가와 더불어 급증하는 교통소음의 피해를 최소화하기 위하여 도로변 지역에 방음벽의 설치가 이루어지고 있다. 이에 따라 여러 형태의 방음벽 설치되었고, 그 형태와 재질에 따라방음성능, 시야확보측면, 유지관리 등에서 장단점이 존재한다. 최근 꾸준하게 적용되고 있는 반사형 투명형 방음벽의 경우, 시야를 확보할 수 있고 외관이 우수하지만 반사음의 영향을 고려해야 하는 단점이 있다. 본 연구에서는 방음벽 전면 형상에 의한 반사음의 영향을 분석하여 반사형 방음벽을 최적화하여 반사음의 영향을 최소화 하고자 하였다. 방음벽 전면에 두께가 다른 블록을 설치하고 일반 반사형 방음벽의 소음 반사 효과와 비교한 결과, 일반 반사형 투명 방음벽에 비하여 0.9~1.5 dB(A)의 소음저감 효과가 있었다. 또한 반사음이 증가 또는 감소하는 공간적 영역이 블록의 두께에 따라 변화하는 것을 알 수 있었다. 이러한 현상은 방음벽 전면 형상에 따라 소음의 집중 및 확산분포가 다양하게 변화하는 것을 나타내며 방음벽을 최적화하는 기술의 가능성을 보여주는 결과라고 판단 하였다.

Keywords

Acknowledgement

Supported by : 한국건설기술연구원

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