• 제목/요약/키워드: Cant Deficiency

검색결과 14건 처리시간 0.023초

부족캔트량과 레일마모의 상관관계 고찰 (A Study on a Mutual Relation of Cant Deficiency/Rail Wear in Metro Lines)

  • 홍철기;양신추;김연태
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2001년도 추계학술대회 논문집
    • /
    • pp.481-487
    • /
    • 2001
  • In this study, the relation between cant deficiency(C') and rail wear in Seoul Metro Line 5 with STEDEF track structure(concrete bed) is studied. As a result, it is found that cant deficiency have a direct influence on rail wear, and under the condition that other negative effects are neglected, the cant deficiency in Metro Lines is demanded to set as little as possible.

  • PDF

일반철도의 저속 및 고속열차 혼용구간 최소곡선반경 및 설정캔트범위 검토 (Review of Minimum Curve Radius and Cant Range Setting for Mixed Section of Low and High speed Trains in Conventional Railway Line)

  • 이재혁;김정혁;박용걸
    • 한국산학기술학회논문지
    • /
    • 제21권10호
    • /
    • pp.345-353
    • /
    • 2020
  • 일반철도의 경우 운행속도가 다양한 여객열차와 화물열차가 혼용되기 때문에 차량이 곡선구간을 주행할 경우에는 승객의 승차감과 열차의 주행안전성을 확보하기 위하여 최소곡선반경을 설정하고 운행속도에 적합한 균형캔트, 부족캔트 및 초과캔트 설정범위를 만족하는 캔트를 설정하여야 한다. 본 논문에서는 선로의 곡선반경, 캔트, 열차속도의 상관관계를 분석하여 열차종별 운행속도, 부족캔트와 초과캔트에 대한 기준을 만족하는 캔트범위를 분석하고 곡선반경에 대한 현재 설계기준의 적정성을 검토하여 최적의 최소곡선반경을 제시하고자 한다. 또한, 회귀분석을 통한 열차혼용시 운행 빈도에 따른 열차운행속도를 산정하여 고속열차 횟수비에 따른 균형캔트와 곡선반경별 설정캔트 범위를 산정하였다. 위의 결과를 바탕으로 최소곡선반경과 설정캔트의 적정범위를 제시함으로써 노반과 궤도설계에 반영하여 운영노선의 속도향상, 부족캔트에 의한 승차감저하 및 탈선위험을 방지하고, 초과캔트에 의한 하중편중을 최소화하여 곡선선로를 주행하는 열차의 주행안전성 확보와 선로유지관리 효율성을 향상하고자 하였다.

경부고속열차의 기존선 주행시 차륜마멸특성에 관한 연구 (A Study on the Wheel Wear of High Speed Train Running on the Conventional Line)

  • 강부병;이희성
    • Tribology and Lubricants
    • /
    • 제19권4호
    • /
    • pp.187-194
    • /
    • 2003
  • This paper describes the characteristics of wheel wear of high speed train running on the conventional line. Conventional line has many curved tracks that cause severe wheel flange wear. The influences of lubrication, cant deficiency, curve radius on wheel wear are also described considering the operation performance of the highspeed trainset. A method of calculation using contact patch work model is presented for determination of the evolution by wear of railway wheels.

철도차량의 곡선 구간별 주행안전성 평가 (A Running Safety Assessment for Curved Section for a Railway Vehicle)

  • 이승일;이희성
    • 한국소음진동공학회논문집
    • /
    • 제18권12호
    • /
    • pp.1301-1309
    • /
    • 2008
  • The curved portion fur each section running safety evaluation interpretation according to the track condition for improving the curved portion passage rate of a vehicle by using the multibody analysis model of the Saemaeul train was carried out. As a result, The excess of cant reaches the bad effect to the running safety in case the radius of curvature is small. In case the radius of curvature was large, we could confirm that the deficiency of cant reached the bad effect to the running safety. In the curved portion, the circular curve section most badly showed the running safety. The deficiency of curve length reaches the bad to the running safety. In the curved portion, the circular curve section most badly showed the running safety. Therefore the track condition(cant, transition curve length, etc) can reach the bad effect to the running safety of a vehicle, the exact design is required.

곡선부 통과시 틸팅열차 속도감시 시스템 적용연구 (Speed Supervision System of Tilting Train Through Curves)

  • 신승권;엄기영;심재선
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
    • /
    • pp.309-311
    • /
    • 2006
  • A train having a system which tilts the train body to reduce the lateral acceleration experienced by passengers when operating around curves, allowing the train to run at higher speeds through curves than non-tilting trains. A tilting train may have a maximum design service cant deficiency of up to $8^{\circ}$. In this case there is, at worst, a margin of only $6^{\circ}$ cant deficiency between a train travelling at enhanced permissible speed and its roll-over resistance. This is a significant reduction in the margin against overturning compared to that offered at permissible speeds. Particular consideration therefore needs to be given to the adequacy of the margin and the additional controls against overturning required when trains travel at enhanced permissible speeds. This paper deals with the speed supervision system of tilting train through curves.

  • PDF

철도차량의 Roll 특성에 관한 연구 (A Study for Roll characteristic of Railway Vehicle)

  • 양희주;이강운;박길배;성재호
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2006년도 추계학술대회 논문집
    • /
    • pp.1184-1189
    • /
    • 2006
  • Railway vehicle have three translational motions-longitudinal, vertical and lateral, and three rotational motions-rolling, pitching and yawing caused by track irregularity, wheel and rail characteristic, dynamic behaviors etc. The rolling motion in vehicle mainly happens in cases of the vehicles stationary and running on canted track. When the vehicle positioned in stationary on canted track, vehicle is inclined toward inside of installed cant due to gravity component. When the vehicle has running on a track with cant deficiency, vehicle is inclined toward outside of installed cant due to centrifugal force. The roll coefficient(s) is defined as the ratio between the angle of inclination of the vehicle($\eta$) and the angle of the rail level($\alpha$). This paper has noted the test method, test result and analysis result to calculate the roll coefficient according to UIC505-5, international standard

  • PDF

한국형 고속전철의 기존선 주행 진동가속도 특성 분석 - 곡선 통과속도 중심으로 (Analysis of the Acceleration Characteristics on the Conventional line for Korean High Speed Train- in il point of passing speed on the curve)

  • 김영국;김석원;목진용;박찬경
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2004년도 춘계학술대회논문집
    • /
    • pp.222-227
    • /
    • 2004
  • Korean High Speed Train(KHST) has been tested on the high speed test line in Osung site, since it was developed through the G7 Project Plan in 2002. It was also tested on the conventional line such as KyongBu and Honan Line to know the possibility of increasing the limited speed for the high speed trains. This paper introduces the method to improve the speed on the conventional line with body lateral acceleration among the several considered issues and explains the parameters related to those analysis, such as the cant deficiency, the radius of curve, speed and etc. When a train pass on the curved track, the lateral accelerations of body are divided into the quasi-static and the maximum accelerations according to the UIC 518 which is the international specification for testing and approval of railway vehicles from the point of view of their dynamic behaviour, especially for safety and ride comfort. This paper shows that it is safe and comfort from the results of test when KHST runs on the conventional line with the curves and proposes that the limited speed of conventional curved line could be changed to a little higher speed if the analysises of other fields are completed.

  • PDF

철도곡선부 속도향상을 위한 선형개량요소 결정 (Determination of Route alignment improvement parameter for Speed up in Railway curve sections)

  • 조규전;이남수;정의환
    • 한국측량학회지
    • /
    • 제13권2호
    • /
    • pp.209-218
    • /
    • 1995
  • 철도속도향상 계획은 미래에 있어 풍요로운 사회를 실현시키는데 중요한 역할을 담당하게 될 것이다. 열차 운행속도에 매우 큰 영향을 주는 선형 요소는 곡선구간으로서 이 구간에서는 열차의 주행성과 승객의 승차기분을 저해하는 요인을 줄이기 위해 완화곡선구간을 포함한 곡선부에 캔트 및 슬랙을 설치하게 되는데 이러한 값들은 열차의 종류가 다르기 때문에 균형적인 값을 사용하지 못하고 어느 정도 부족한 상태로서 유지되고 있다. 본 연구에서는 곡선반경별로 설정캔트량을 조사하여 부족캔트량에 대한 횡가속도를 산출하여 곡선부에서의 주행성을 검토하여 효과적인 곡선관리 방법을 제시하였으며 선형개량요소를 적용하여 속도향상 효과를 얻었다.

  • PDF

원곡선구간에 종곡선 설치 가능한 곡선반경에 관한 연구 (A Study of Allowable Vertical Curve Radius on Horizontal Curved Section)

  • 이기승
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2003년도 춘계학술대회 논문집
    • /
    • pp.309-314
    • /
    • 2003
  • A vertical curve should be installed in straight section. In case, it be installed on horizontal curved section, safety factor go down. In this study, it is calculated that the deficiency of cant about vertical curve radius on horizontal curved section. The result of this study will be used on planning the tack layout of railroad and design the track construction.

  • PDF

경부고속열차의 기존선 주행시 차륜마멸특성에 관한 연구 (A study on the wheel wear of highspeed train running on the conventional line)

  • 강부병;이희성;왕영용
    • 한국철도학회:학술대회논문집
    • /
    • 한국철도학회 2000년도 춘계학술대회 논문집
    • /
    • pp.135-142
    • /
    • 2000
  • This Paper describes a characteristics of wheel wear of high speed train running on the conventional line. Conventional line has many curved tracks that cause severe wheel flange wear. The influences of lubrication, cant deficiency, owe radius on wheel wear are also described considering the operation performance of the highspeed trainset. A method of calculation using contact patch work model is presented far determination of the evolution by wear of railway wheels.

  • PDF