Suggestion for Train Vibration Equations based on Change in Track System

궤도구조 변경에 따른 열차 진동 추정식 제안

  • 김응록 (송원대학교 철도시설토목계열) ;
  • 박연수 (전남대학교 공과대학 건설지구환경공학) ;
  • 강성후 (동신대학교 이공대학교 토목환경공학) ;
  • 박선준 (동신대학교 공업기술연구) ;
  • 김흥기 (광주광역시 지하철건설본부 공사계획과)
  • Published : 2002.03.01

Abstract

This research estimated decreased vibration level as quantitative according to change of track system on Seoul Subway Line No. 1 from existing ballasted track system(Pandrol type clip) to concrete track system(Youbgdan type isolation rubber clip). Following change to concrete system, vibration level at tunnel floor decreased between 4-8dB(V). Vibration equations suggested in this paper consider the velocity of train and can estimate quantitative vibration response. These are divided by ultimate limit state($\beta$=0), serviceability limit state($\beta$=1.28) and safety state($\beta$=3), respectively. The reliability index, $\beta$=0, means 50% data line obtained by least squares best-fit line. The reliability index $\beta$=1.28 and 3 represent boundaries below 90% and 99.9% respectively.

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