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Interior Noise Characteristics of the Electric Trains in Gyeongchun Line

경춘선 전동열차의 실내 소음 특성

  • Ann, Yong Chan (Dept. of Convergence System Engineering, Kangwon National Univ.) ;
  • Lee, Jung Hyeok (Dept. of Convergence System Engineering, Kangwon National Univ.) ;
  • Kim, Seock Hyun (Dept. of Mechatronics engineering, Kangwon National Univ.)
  • 안용찬 (강원대학교 대학원 융합시스템공학과) ;
  • 이중혁 (강원대학교 대학원 융합시스템공학과) ;
  • 김석현 (강원대학교 메카트로닉스공학과)
  • Received : 2014.03.14
  • Accepted : 2014.05.14
  • Published : 2014.07.01

Abstract

Since the opening of the double-track railway for the Gyeongchun local electric train and the semi-high speed train ITX, floating population between Seoul and Chuncheon has rapidly increased. This is attributable to the competitiveness of the railway service in terms of punctuality and safety of operation, mass transportation and low fare. However, many passengers have expressed strong dissatisfaction and displeasure towards the interior noise and its high rate of increase, particularly in tunnel sections. In this study, the interior noise characteristics of Gyeongchun local electric train and ITX were analyzed and compared. Noise levels, frequency spectrum and sound quality indices were compared for the open land, tunnel and bridge. Finally, from the noise levels depending on the location in the vehicle compartment, the noise transmission path was determined and a basic strategy for reducing the interior noise was developed.

경춘 복선의 일반 전동열차와 준 고속 열차인 ITX-청춘이 개통된 이래, 서울과 춘천을 오가는 유동인구가 급증하고 있다. 이는 대용량성과 저렴한 요금, 운행의 정시성 및 안전성 측면에서 다른 교통수단에 비해 철도 운송의 경쟁력이 높기 때문이다. 그러나 실내소음 측면에서는 전동 열차에 대한 승객들의 불만이 상당하다. 특히 터널 구간에서 실내소음은 급격히 높아져 대화에도 지장을 줄 정도이다. 본 연구에서는 경춘선 일반 전동 열차와 ITX-청춘 열차를 대상으로 정상 주행 중의 실내소음 특성을 비교 분석한다. 개활지, 터널 및 교량에서의 소음 레벨, 주파수 특성과 음질 지수를 분석하고, 실내 위치에 따른 소음레벨의 차이를 비교하여 소음의 전달 경로를 파악함으로써 향후 전동 열차의 실내소음 향상을 위한 기초 정보를 제공하고자 한다.

Acknowledgement

Supported by : 강원대학교

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