• 제목/요약/키워드: 레일 경좌

검색결과 4건 처리시간 0.049초

실제 선로조건에서의 레일 경좌 변화에 따른 철도차량의 주행안전성 해석 (Running Safety Analysis of Railway Vehicle Depending on Railway Inclination Change Under Actual Track Conditions)

  • 김문기;엄범규;이희성
    • 대한기계학회논문집A
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    • v.37 no.11
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    • pp.1437-1443
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    • 2013
  • 현재 국내선로에서 운전규정에 따른 곡선반경별 속도제한을 실행하고 있으나 기존선 속도 향상과 관련하여 실제로 탈선 발생 없이 운행 가능한 곡선부 최대 통과속도에 대한 연구가 필요하다. 또한, 철도차량의 주행안전성에 영향을 미치는 요인으로서는 차량측면과 궤도측면으로 나눠질 수 있는데, 본 연구에서는 탈선 안전도 향상에 영향을 미치는 매개변수 중 레일 경좌 변화에 따른 주행안전성을 해석하고자 하였다. 탈선의 위험도가 높은 곡선부 통과하는 열차의 고속향상을 도모하기 위하여 실제 선로조건인 남성현${\leftrightarrow}$청도 상 하행 구간의 곡선부 구간별 통과시 레일 경좌와 주행속도 변화에 따른 주행안전성 해석을 수행하였다.

레일 경좌 변화에 따른 곡선부 통과열차의 주행안전성 해석 (Running Safety Analysis of Railway Vehicle passing through Curve depending on Rail Inclination Change)

  • 김문기;엄범규;이희성
    • 한국소음진동공학회논문집
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    • v.23 no.3
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    • pp.199-208
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    • 2013
  • So far today, there is a speed limit by the radius of curve based on operation regulation in domestic railway, however a study for the maximum running speed at the curved section without any derailment would be necessary. The two major factors related to the running safety of railway vehicle are classified as the railway vehicle condition and the track condition. In terms of the rail inclination among many other factors, the determination of rail inclination within the possible limit is necessary for the geometrical structure of the optimum track. The disregard of the geometrical parameter related to the rail inclination may cause a serious problem to the running safety of railway vehicle. This study is focusing on the analyzing of running safety regard to the change of rail inclination among the many other parameters to improve derailment safety, so that there is an affection analysis of the running safety regard to the change of rail inclination in the ideal and geometric track condition. Also There is an affection analysis of the running safety regard to the simultaneous change of rail inclination and the running speed at the curved section. According to analysis results of running safety, In case that the left and right rail inclination are 1/40, the running safety of this condition defined than other conditions. Also, the rail inclination of conventional lines is 1/40, Therefore, the railway vehicle passing through curve is safe when the railway vehicle runs in conventional lines.

곡선부 통과열차의 레일 경좌 변화에 따른 주행안전성 해석 (A Running Safety Analysis of Railway Vehicle passing through Curve According to Rail Inclination Change)

  • 손명선;엄범규;강부병;이희성
    • 한국철도학회:학술대회논문집
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    • pp.1922-1928
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    • 2011
  • The rail inclination produces a wider bearing area between the wheel and the rail by moving the wheel rail contact area away from the gauge towards the centre of the railhead, thus improving the wear pattern of the railhead and wheel treads. It is essential to keep the rail inclination within the allowable range to ensure optimum track geometry. Neglecting the rail inclination geometrical parameters in a track quality evaluation can cause safety of railway vehicle and serviceability problems. In this paper, we examined the effect of the rail inclination in general geometry state of the railway track using VI-Rail and analyzed running safety when the railway vehicle passing through curves depending on change of the rail inclination and running speed.

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3호선 실제선로 조건에서의 레일경좌 변화에 따른 철도차량 주행안전성 해석 (Running Safety Analysis of Railway Vehicle depending on Rail Inclination Change on Actual Track of Subway Line No.3 in Seoul)

  • 김태건;이희성
    • 한국안전학회지
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    • v.31 no.3
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    • pp.130-135
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    • 2016
  • It is very hard to analyze the train derailment safety quantitatively at the curved section because of the diversified affect parameters including the complex interaction between wheel and rail, the train conditions such as the shape of wheel, suspension system, the track conditions such as the radius of curve, cant, transition curve, and the operation conditions, etc. Two major factors related to the running safety of railway vehicle are classified as the railway vehicle and the track condition. In this study, when the railway vehicle passing through curves of actual track condition of subway line NO.3 in seoul ($Yeonsinnae{\leftrightarrow}Gupabal$), the effect that has influence on running safety depending on rail inclination. The analysis result of 1/40 rail inclination condition is more favorable on running safety than other rail inclination conditions because derailment coefficient and wheel unloading ratio are the lowest.