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http://dx.doi.org/10.4491/KSEE.2015.37.2.120

A Reduction Effect in Noise Reflection by Different Shapes of Soundproofing-panel  

Kim, Ilho (Environmental and Plant Engineering Institute, Korea Institute of Civil Engineering and Building Technology)
Park, Taeho (Department of Energy and Environmental System Engineering, University of Seoul)
Chang, Seoil (Department of Environmental Engineering, University of Seoul)
Lee, Haein (Environmental and Plant Engineering Institute, Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.37, no.2, 2015 , pp. 120-125 More about this Journal
Abstract
With rapid urbanization, the volume of traffic in urban area has been significantly increased. This in turn led to problem which can be described as Road Traffic Noise. Currently, to alleviate the road traffic noise damage, a demand for installation of soundproofing walls is rising. Among different shapes of soundproof walls being installed, the reflection-type acoustical insulation panel is highly drawing attentions of residents due to the fact that it does not obstruct their field of vision in contrast with the opaque acoustical insulation panel. On the other hand, improving the soundproofing wall of the reflection-type acoustical insulation barrier panel needs to be focused on since it has a possibility to cause a secondary damage by reflected sounds. Therefore, in this research, study has been carried out to improve the forms in order to minimize travelling of reflected sounds through changing the frontal surface shape and geometrical shape of the reflection-type soundproofing panel. A result from comparison between the normal reflection-type soundproofing panel and the improved soundproofing panel, with reduction effects in the noise reflection, showed that the curved type of soundproofing panel has an impact on reducing the noise up to 1.5 dB. Furthermore, from the research conducted, it appears that the increase and decrease in the reflected sounds can be changeable depending on various design factors. Thus, it turns out that the study shows a potential possibility to develop a reduction technology of the reflected sounds pertaining to overall condition on the soundproofing walls.
Keywords
Noise Barrier; Sound Insulation Properties; Panel Shape; Reflection Noise; Curved Noise Barrier;
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  • Reference
1 Kim, H.-S. et al., "Improvement for Maintenance Management System of Noise Barrier," Proc. KSNVE Annual Spring Conference, 2003, 214-218.
2 Cha, S. G., "A study on actual maintenance and improvement," Proc. KSNVE Annual Spring Conference, 2013, 608-610.
3 Jonasson, H. G., "Acoustic Source Modelling of Nordic Road Vehicles," SP Swedish National Testing and Research Institute(2006).
4 Bendtsen, H., "Noise Barrier Design : Danish and Some European Examples," Danish Road Institute Report, p. 174(2010).
5 Kragh, J. et al., "Nordic Environmental Noise Prediction Methods, Nord2000 Summary Report," Danish Electronics LIght & Acoustics(2002).
6 Plovsing, B. et al., "Nord 2000. Comprehensive Outdoor Sound Propagation Model. Part 1 : Propagation in an Atmosphere without Significant Refraction," Danish Electronics Light & Acoustics(2002).
7 Korean Ministry of Land, Transport and Maritime Affairs, "Vehicle classification guide for traffic volume survey," Korean Ministry of Land, Transport and Maritime Affairs(2008).
8 Korea Expressway Corporation. Transport Statistics [Internet]. Korea Expressway Corporation; c2014 [cited 2015 March 19]. Available from:http://www.ex.co.kr.
9 Park, S.-I. et al., "A Study on The Traffic Noise Level and Frequency Characteristics as Per Types of Cars in the City," 1(2), (2008).