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김정태(Jeung T. Kim),손정곤(Jung G. Soon),김홍찬(Hong C. Kim),김정수(Jung S. Kim) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
Community noise has been serious social issues in Korea. In this paper, the new guidelines in railway noise which is prepared for MOE by authors are overviewed. This policy will be enforced beginning in 2006 with 5 year period. Details on the railway noise will be demonstrated at the presentation.
김정태(Jeung T. Kim),김정수(Jung S. Kim),김홍찬(Hong C. Kim),손정곤(Jung G. Soon),강대준(Daejoon Kang) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
Community noise has been serious social issues in Korea. This paper reviews current statistics and status on railway noise, with practical engineering tools in order to reduce the noise level from railway traffic noise sources. At the beginning, guidelines of the current environmental policy are discussed, with the new policy on railway noise to be enforced beginning in 2007 with 5 year schedule. Then, a noise reducer is proposed as a tool to reduce noise levels protecting people living near at the railway. Details on the acoustic effect in field test are discussed with the result of implementation in the street. We propose noise reducers as an effective and practical tool for the people who are exposed to rail traffic noise in cities.
김정수(Kim, Jung-S.),손정곤(Son, Jung-S.),김정태(Kim, Jeung-T.) 한국소음진동공학회 2006 한국소음진동공학회 논문집 Vol.16 No.3
In Seoul, several railway depots are located at the places where a public can easily access. Since a depot occupy a large amount of land itself, it is natural to use those sites for a public building construction such as an apartment complex or a transportation terminal, as an example. Most of the buildings on a depot, however, are exposed to vibration problems, because foundations are excited from the dynamic loading whenever heavy trains pass on the track. Severe vibration may cause a damage to building structures and a troublesome to a community. In this paper, some vibration practices have been examined in order to resolve the vibration problems. First, a critical speed of a train in a railway depot is evaluated. Then, the structural effect has been investigated. Finally, practical approaches to reduce the vibration level have been proposed. In this first half part of the paper, the focus has been on the critical speed and a structural transmission phenomena.