도로인접 아파트 단지의 교통소음 예측 및 저감방안

조창근(Chang-Geun Cho) 한국생활환경학회 2014 한국생활환경학회지 Vol.21 No.5

Various kinds of noise reduction plans should be reviewed in the initial planning stage of apartment complex construction because absorptive noise barriers are generally restrictive in reducing traffic noise. To address this issue, the author of this paper presents technical data for planning in order to reduce traffic noise in an apartment complex situated near the traffic road. In this study, traffic noise levels were simultaneously measured on the road and in the lower, middle and higher floors of subject apartment buildings which are located within two traffic roads and are influenced by its traffic noise. Consequently, noise reduction of the suggested noise reducing plans is predicted to investigate the effect of them as well. The study shows that the daytime average traffic volume for the 6-lane road is > 4,000 vehicles/h; for the 4-lane main road, the daytime average traffic volume is > 5,000 vehicles/h. The maximum traffic noise levels in B, C, and D buildings located near the traffic road of the subject apartment complex were measured to be 73.8 dB (A) during daytime and 70.0 dB (A) during nighttime. These values highly exceed the acceptable guidelines. This study suggests that the average noise reduction of absorptive sound proof tunnel showed 3.0 - 10.1 dB (A) which is larger than that of absorptive noise barriers.

방음터널 단면형상에 따른 소음저감 특성 평가 : 터널 내부소음을 중심으로

이원열,김하근,오양기,주문기 대한건축학회 2004 대한건축학회논문집 Vol.20 No.2

It seems inevitable for residential buildings to be high-rise and allocated near traffic roads due to the crowdedness in urban areas. Acoustic environments in those areas have been seriously deteriorated by the increase of traffic vehicles. But sound barriers have a limitation in controlling noise due to diffraction noise from sound barriers. Hence sound barrier is not effective to protect the high-rise apartment from traffic noise. This work aims at evaluating characteristics of noise reduction according to the tunnel section shapes by using 1/5 scale model. We carried out a number of field measurements for 1/5 scale model of noise barrier tunnels with various sectional shapes. The results were as follows 1) The level difference was ranged from 0㏈ to 1.2㏈ according to the opening in the ceiling 2) The level difference was ranged from 0.4㏈ to 2.3㏈ when sound-absorbing materials were increased up to 45% of all surface areas. 3) There was generally good agreement between prediction results and the measurement results.

방음시설의 효율적 설계 대안에 관한 연구

이남수,주문기,고효인,홍지영,오양기 한국생활환경학회 2017 한국생활환경학회지 Vol.24 No.6

The construction of apartment buildings near the road is increasing in the city. Noise insulation facilitiesare installed to reduce road traffic noise. The most effective is the sound proof tunnel. However, the sound prooftunnel is indiscriminately and excessively installed. Noise isolation performance and economic feasibility should beconsidered when installing sound proof tunnel. Based on the results, sufficient alternatives will allow for efficient designsat the same cost. This study provided an alternative to the efficient design of insulation facilities for apartment housings. It predicted the impact of traffic noise. We simulated 3D simulation of the apartment buildings. It analyzed the noisereduction effects.

방음터널 단면형상에 따른 소음저감 예측 및 특성 평가( 터널 외부소음을 중심으로)

김하근,오양기,이원열 대한건축학회 2004 대한건축학회논문집 Vol.20 No.8

Noise emitted from urban arterial roads is getting more serious problem in the environmental quality of living. Though noise barrier is one of measures to mitigate noise levels at housing area, it has a limited effect especially on apartment units high around the roads. Noise barrier tunnel may be another effective device for noise reduction even to high rise apartments. On these basis, this study aims at providing a number of possible sectional shapes of noise barrier tunnels, measuring their effects on noise reduction with 1 to 5 scale model measurements, and proposing/validating a prediction technique of their effects. According to a number of measurements with various sectional shapes or the scaled model, 1)the proposed sectional shapes have affirmative effects on noise reduction, 2)the difference in noise levels between in and out of tunnel are about 10dB whether there is opening in the ceiling or not. 3)results from predictions and the measurements show generally good agreements within 0.3~3.6 dB(A).

방음터널 단면형상에 따른 소음저감 예측 및 특성 평가 : 터널 외부소음을 중심으로

오양기,김하근,이원열 대한건축학회 2004 대한건축학회논문집 Vol.20 No.8

Noise emitted from urban arterial roads is getting more serious problem in the environmental quality of living. Though noise barrier is one of measures to mitigate noise levels at housing area, it has a limited effect especially on apartment units high around the roads. Noise barrier tunnel may be another effective device for noise reduction even to high rise apartments. On these basis, this study aims at providing a number of possible sectional shapes of noise barrier tunnels, measuring their effects on noise reduction with 1 to 5 scale model measurements, and proposing/validating a prediction technique of their effects. According to a number of measurements with various sectional shapes or the scaled model, 1)the proposed sectional shapes have affirmative effects on noise reduction, 2)the difference in noise levels between in and out of tunnel are about 10dB whether there is opening in the ceiling or not. 3)results from predictions and the measurements show generally good agreements within 0.3∼3.6 dB(A).

방음벽 및 방음터널 설치에 따른 주변지역 기류흐름분석

유장열,남병희,유기표 대한건축학회지회연합회 2016 대한건축학회연합논문집 Vol.18 No.1

도시화로 인해 도시의 확장과 인구 과밀화에 따른 도로망 확장, 도시 순환도로 등이 발달되었다. 도시가 확장되면서 주거인구가 도로 주변에 거주하게 되면서 도로에서 배출되는 대기오염 물질의 확신이나, 소음 등의 문제가 발생하고 있다. 이를 방지하기 위해 일반적으로 도로변에 방음벽, 방풍벽을 설치함으로써 도로에서 전달되는 소음 저감 및 대기 오염물질 피해 저감 효과에 많은 영향을 미치고 있다. 현재까지의 방음벽, 방풍 펜스에 대한 오염물 이동에 미치는 연구는 대부분 방음벽에 대하여 부분적인 현장실험과 전산유체역학 (CFD:Computational Fluid Dynamaics)를 이용한 수치 실험으로 진행되어왔다. 따라서 실제로 바람의 이동 형태나 그로 인해서 미치는 영향에 대한 연구는 부족한 실정이다. 본 연구에서는 PIV (입자 영상 유속계)를 통해서 방음벽에 의한 실제 바람의 형상 및 그로 인해 거주자에게 미치는 바람의 영향에 대해서 알아보고, CFD를 해석을 통한 방음터널의 풍속 변화 및 영향에 대해서 알아보고자 한다. Urbanization has resulted in the extension of road networks and development of belt ways due to the expansion of cities and overpopulation. With the expansion of cities, resident population started to live nearby roads and is experiencing issues like spreading of air pollutants and noises generated on roads. In general, such issues are prevented by installing noise barrier and windproof walls on roadsides, which have great impact on reduction of noises and air pollutants. Previous studies about the effects of noise barrier and windproof walls on movement of pollutants were mostly conducted as partial field experiments and numerical experiments using computational fluid dynamics (CFD). Therefore, there is lack of studies on movement of wind and its effects. The purpose of this study is to examine form of actual wind based on noise barrier and the effects of wind on residents through particle image velocimetry (PIV), and to find out change and effect of wind velocity in noise barrier tunnel through CFD analysis.

축소모델을 이용한 개방형 방음터널의 풍하중 저감 연구

김태민 ( Tae-min Kim ),김정태 ( Jeung-tae Kim ) 한국환경기술학회 2017 한국환경기술학회지 Vol.18 No.1

본 연구에서는 철도 주행 중 발생하는 소음 피해를 저감하고자 설치되는 방음터널의 풍하중을 저감하기 위한 방안으로 벽면부를 일부 개방하였다. 개방된 개구부에는 소음기 형태의 음향 루우버를 설치하였으며, 풍하중 저감 효과를 풍동 실험을 이용하여 분석하였다. 개구부의 비율은 0, 9 12, 36, 50%로 총 5 가지 모델을 구축하였으며, 도심지 평균 유동 속도로 가정하여 15 m/s에서 풍동 실험을 수행하였다. 사용된 풍동시험 장치의 건폐율을 고려하여 교량 모델의 축소비를 1:40으로 설계하였으며, 항력, 양력 및 모멘트 풍하중을 측정하였다. 연구 결과 개구율 증가에 따라 항력 풍하중이 크게 감소하였으며 양력 풍하중 및 모멘트 풍하중은 일부 증가하거나 영향이 미비하였다. 하지만 개구율 50%에서는 양력 풍하중 성분이 증가하여 36% 개구율이 가장 효과적으로 풍하중을 저감 시키는 것으로 분석되었다. 결과적으로 방음시설의 벽면부 개방이 일반 방음벽 대비 소음 저감 효과가 고층부까지 10 dB 가능하였으며, 풍하중 저감에 효과적인 것으로 판단된다. This research is to examine the wind loading effect of a noise protection roof when its side areas are exposed to a partial opening. When a noise protection roof is constructed on a bridge or a high-rise building complex, as an example, the side loading forces and moments due wind may cause a structural damage so that the noise protection roof has to be designed to sustain the strong forces and moments which may lead to heavy structures of the noise protection roof elements. The opening area ratios considered are 5 cases: 0, 9, 12, 36, and 50% respectively. Based on the scaled model of 1:40 ratio, the wind tunnel testing has been conducted at the speed of 15 m/s that is an average wind speed in a city area. The measured values from the wind tunnel testing are the lift, drag forces and moment. The result shows that the dag forces reduced a lot as the opening ration increases. The lift forces and the moments, however, have no much variation while the ration changes from 0 to 36%. When the ration reaches to 50%, the lift forces begin to be increased. It turns out that 36% of opening area ration is the best choice since the wind loading forces and the noise reduction are obtained simultaneously. We conclude that the partial opening design of a noise barrier seems to be a meaning engineering tool for the high-rise building complex application.

오리가미 X-Form Span을 적용한 방음터널의 형상 유형 제안 - 구조성능을 중심으로 -

김진웅 ( Kim Jinwooung ),장도진 ( Jang Do-jin ),김성아 ( Kim Sung-ah ) 디자인융복합학회(구.한국인포디자인학회) 2021 디자인융복합연구 Vol.20 No.3

도시화가 진행됨에 따라 방음시설물에 대한 수요가 증가하고 있다. 그중에서도 방음터널은 특히 고층 건축물에서 방음 성능이 좋아 가장 선호된다. 그러나 방음터널은 가치공학적으로 효율이 매우 떨어지는 시설물이다. 때문에 방음터널의 효율적 운영을 위해 방음터널의 성능을 높이거나 비용을 낮추기 위한 다양한 연구가 수행되었다. 대부분의 연구는 성능을 높이는 과정에서 비용도 함께 늘어났다고 한다. 그러나 비용을 낮추는 접근은 비교적 연구되지 않았다. 본 연구는 방음터널의 폼팩터에 오리가미 X-Form-Span의 형상을 적용해 방음터널의 구조적 성능을 개선하고 부재의 사용량을 절감하였다. 기존 방음터널에 비해 동일한 처짐량을 기준으로 부재량을 최대 25%까지 감소시킬 수 있었다. 본 연구에서 제안된 방음터널의 형태유형은 방음터널의 적용을 확대할 수 있을 것이라고 예측한다. As urbanization progresses, demand for soundproof facilities is increasing. As a result of analyzing the noise barrier tunnel(NBT) in value engineering, it is a low-efficiency facility. Therefore, for the NBT's efficient operation, various studies have been conducted to increase the performance or lower the NBT cost. Most of the studies have also increased the cost to improve performance. And the method of reducing the cost has not been mainly studied. This study applied the shape of Origami X-Form-Span(OXF) to the NBT as a form factor to improve the NBT's structural performance and further reduce the number of members used. Compared to the existing NBS, the OXF type could reduce the number of members by up to 25% based on the same amount of deflection. The NBT type proposed in this study is predicted to expand the application of NBT.

방음터널의 정보모델링에 관한 기초적 연구 - T-spline과 기계학습을 활용한 접속부 모델링 -

장도진(Jang, Do-Jin),김성아(Kim, Sung-Ah) 대한건축학회 2019 대한건축학회 학술발표대회 논문집 Vol.39 No.1

BIM 기반 설계 자동화 도구와 디지털 트윈의 상호운용성 : 차세대 방음터널의 사례를 중심으로

양승원(Yang, Seung-Won),김성준(Kim, Seong-Jun),김성아(Kim, Sung-Ah) 한국BIM학회 2021 KIBIM Magazine Vol.11 No.4

Digital twins between BIM Digital Model-Physical Prototype Model will be built for Noise Barrier tunnel(NBT) that meet the definition of N.G smart city facilities derived from previous studies to build a data flow that connects data at each stage of design, construction, and operation. In this process, BIM design automation tools are created and utilized, and consistent transmission of member and attribute data is performed by converting them into IFC format. Through this, the purpose is to improve the labor-intensive environment required from the design stage of the NBT and to consistently maintain the information required for subsequent production and construction. This includes achieving changes in the construction industry based on digital transformation by unifying various data formats used differently for each industry from design to operation. In addition, it demonstrates that information exchange in the maintenance and management stages is possible based on the data exchange of the established digital twin and aims to improve the existing labor-intensive environment and expand operability between digital and physical information. As suggested in previous studies, the implementation of digital twins in these N.G smart city facilities includes the possibility of building an environment that adds to the possibility of high value-added product platforms as well as the function of big data platforms targeting existing smart cities.