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Nord2000의 철도차량 분류기준에 따른 소음지도 결과 비교
임형준(Hyeong Jun Lim),박재식(Jae Sik Park),함정훈(Jung Hoon Ham),박상규(Sang Kyu Park) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.4
Recent development of related technologies and efficient utilization of the entire country for the purpose of railway construction, and plans are being accelerated. the railway noise has been improved by increasing the high speed railway station, and accelerating the existing trains. Nord2000 which is an overseas noise prediction equation could not be applied directly to the domestic railway vehicles. So the specific vehicles in the Nordic countries which is a similar specification to domestic trains should be selected. Nord2000s accuracy was compared to Schal103, CRNs. Prediction of Ground impedance and Roughness class carried out at different. In this paper, the result of selected vehicles for Nord2000 was as follows. S-laX2 was for express trains, N-*2c-3b was for Mugunghwa, S-Pass/wood was for Saemaul, N-4a was for freight trains, N-3a was for subway. the calculation time for Nord2000 took longer than others. in addition, Ground absorption was indispensable to calculate a noise map for Nord2000. As a result, CRNs prediction noise levels at Wonju-si was closest to the measurements. However, the predicted noise levels of Nord2000 was the most accurate.
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