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도로변 방음대책 수립시 합리적인 소음규정 적용에 대한 연구
손정곤(Jung-Gon Son),김정태(Jeung-Tae Kim),조윤희(Yun-Hee Jo) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.10
The road traffic noise has emerged major noise as the overcrowding of the urban population and the explosion of car storage capacity. There are limits for establishing the measures to meet noise standard because of the increase of high-rise building and insufficient distance between residential areas and road in urban center areas. Therefore, this study analyze the problem of the application of national road noise standard, and present the alternatives to achieve environmental standards in conjunction with the soundproofing measures. To reduce the population ratio exposed to road noise on seoul motorway, we suggest some action plane are as follows: ⅰ) Roadside noise standard of nighttime beside daytime is the first noise reduction goals ⅱ) Noise standard of Noise and vibration control act is priority in case of existing area ⅲ) Noise standard of basic environmental policy act is priority in case of new area.
김태민 ( Tae-min Kim ),김정태 ( Jeung-tae Kim ),박광현 ( Gwang-hyun Park ),손정곤 ( Jung-gon Son ),류래언 ( Le-on Ryu ),고효인 ( Hyo-in Koh ) 한국환경기술학회 2015 한국환경기술학회지 Vol.16 No.2
철도 차량의 주행 소음은 철도 변 인근 지역에 소음피해를 발생시킨다. 발생된 철도 소음 전파를 저감시키기 위해 직접음 차단의 방안으로 방음시설이 설치되고 있다. 터널형 방음벽은 방음시설의 일종으로 벽면과 지붕까지 방음재료로 구성되어 있기 때문에 상부로 전파되는 직접음을 차단할 수 있어 고층에서의 소음 저감 효과가 우수하다. 하지만, 터널형 방음벽을 철도교량 위에 설치하기 위해서는 구조적 안정성이 고려되어야 하며, 필요시 보강 작업이 요구 된다. 또한, 풍하중, 유지보수 문제도 고려되어야 한다. 본 연구에서는 하중 및 풍하중 저감과 더불어 고층 건물에 대하여 효과적인 소음대책이 이루어지기 위한 터널형 방음벽 설계방안을 제시한다. 터널형 방음벽의 측면부분 개방을 통해 방음효과는 유지하며 외부 유동에 의한 풍하중 저감 설계 방안을 함께 고려하였다. 풍하중 저감을 위한 구조 설계 검토 시 교량 위에 선로가 존재하는 조건 하에서 풍하중에 의한 구조 검토를 수행하여 풍하중 저감 및 경량화가 가능한 터널형 방음벽 설계 방향을 제시하였다. Railway noise problems generates social issues in residential areas around railway. In order to reduce noise, soundproof facilities is considered as a way to block the direct noise path which is the main noise sources. Tunnel type soundproof walls that protects direct train noise path by applying sound materials on sides and roof provide an advantage to reduce noise more effectively than noise barriers that have only walls. Especially, it is effective from high-rise apartments because it is able to cut the direct sound by middle and upper floors. In a case of railway on bridge, however, there are constraints such as economic cost, weight requirement and wind load effect. Also maintenance problem is another concern, too. In this study, a design concept of tunnel type soundproof walls for its weight, wind load and noise reduction applying to railway is proposed. The side part that has loading effect due to wind turns out to be a main target of this tunnel type soundproof walls design. A partial opening is the proposed design concept since it reduces the wind loading effect remaining the noise reduction level to high-rise building residents.
김태민(Tae-Min Kim),김정태(Jeung-Tae Kim),김다래(Da-Rae Kim),고효인(Hyo-In Koh),손정곤(Jeung-gon Son) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.4
In order to reduce damage of noise in residential area around railroad, it is established such as soundproof walls or soundproof tunnel. In a case of soundproof facilities established on bridge, it is needed to a lot of cost due to safety factor, also it is demanded weight-lightening design of soundproof facilities to be able to reduce reinforcement cost. This study is configured on a method of reducing soundproof facilities weight-lightening and wind load caused by external flow. Absorptive acoustic louver which is a type of silencer is concerned to reduce the weight of soundproof facilities and is measured using small reverberation chamber so that application of acoustic louver is confirmed to soundproof facilities. Insertion loss(IL) of acoustic louver is on the rise in particular frequency, whereas it is nearly constant except for that frequency. Therefore, acoustic louver is appropriated for soundproof tunnel. In further study, effect on environment noise with soundproof facilities applied by acoustic louver will be examined through numerical analysis in reality model.
김다래(Da rae Kim),김태민(Tae min Kim),김정태(Jeung Tae Kim),손정곤(Jeung gon Son),박광현(Gwang hyeon Park),류래언(Raeeon Ryu) 한국소음진동공학회 2014 한국소음진동공학회 학술대회논문집 Vol.2014 No.10
High speed railroad car and high-rise apartment with development of railway technology cause different problems of noise contrary to the previous generation. It is the most efficient noise reduction countermeasure but we studied that is the way on noise propagation with sound proof wall or sound proof tunnel around railroad. But if it were railroad on bridge, additional cost which is more expensive than installing one on the ground is needed. So sound insulation material considering reducing weight of recent soundproof facilities must be selected. It is in this study that predicted and analyzed acoustical and structural effect for noise reduction by installing soundproof tunnel. If it were departmentalized into additional study, could be able to expect noise reduction effect of sound proof tunnel establishment on the bridge.
김다래(Da Rae Kim),김태민(Tae Min Kim),김정태(Jeung Tae Kim),손정곤(Jung Gon Son),류래언(Le On Ryu) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10
철도 소음은 철도 변 주거지역에 심각한 소음피해를 발생하게 된다. 따라서 주변지역으로 전달되는 소음 전파를 감소시키기 위해 방음벽 또는 방음터널을 설치하여 소음전파 현상을 차단하고자 한다. 그래서 기술 발전에 따른 철도 차량의 고속화, 공동주택의 고층화 등으로 인하여 기존 방음시설 적용 가능 여부 및 재료 선정에 대한 연구가 요구된다. 특히 교량 위의 철로 변의 경우, 일반 지반의 철도 변보다 교량 진동에 의한 소음이 상대적으로 크게 발생되며 방음 시설 설치에 따른 많은 경제적 비용이 요구되기 때문에 방음시설의 효과에 알아 볼 필요가 있다. 본 연구에서는 광음향 기법을 이용하여 교량 위방음 시설의 종류 및 재질에 따른 소음 저감 효과를 분석하였다. 그 결과, 방음벽보다 방음 터널 설치 시 공동주택 고층부 소음 저감 효과를 보였으며, 기존 방음 터널 대비 경량화된 루버를 사용했을 때 철도 소음을 전반적으로 3 ~ 8 dB 저감해주는 것으로 나타났다. Railway noise takes place in critical noise damages to residential area around railway. In order to reduce noise propagation transferred into the surrounding area, we attempt to block noise propagation establishing soundproof walls or soundproof tunnel. So caused by high speed railroad car and high-rise apartment with development of railway technology, it is demanded study on whether it is able to apply to existing sound proof facilities and selection of materials. In a case of railroad on bridge, especially, it comes about relatively louder noises than ones of railroad on ordinary ground. And it is demanded lots of economic cost by establishing sound proof facilities. That’s why we studied that is the way on noise propagation with sound proof wall or sound proof tunnel around railroad. As result, establishing sound proof tunnel is more effective on noise reduction of high floors than sound proof walls, and in a case about using louver which is lightening than existing sound proof tunnel, it is reduced by 3 ~ 8 dB at the whole floors.