• 한국철도학회논문집
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• 제15권6호
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• pp.638-644
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• 2012

본 연구에서 일반철도의 선로이용율의 범위인 60%를 검토하여, 이용가능한 시간과 이용 불가능한 시간을 수치화 하였다. 또한 선로이용율을 변화시키는 요소인 선로유지보수시간에 대한 계산과 적정한 추정시간을 분석하였다. 적절한 철도운영계획과 원활한 시설유지보수를 통한 열차의 안전을 보장하여야 한다. 동시에 매일 연속되는 열차Dia의 원상회복력도 운영계획에 반영되어야 한다. 이런 사항들을 고려하여 보유 중인 기계장비와 국가철도망에 대한 자료를 활용하여 유지보수작업시간 산출방법을 개선하고, 열차지연에 대비한 여유시간을 확보하도록 검토하였다. 결론적으로 일반철도의 선로이용율과 선로유지보수시간 구성요소를 함께 수량화하여, 선로이용율은 60% 내외가 타당함을 증명하였다.

• 한국정보통신학회논문지
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• 제20권4호
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• pp.739-746
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• 2016

철도 안전사고 예방을 목표로 하는 실시간 철도 안전관제 시스템에서는 DDS (Data Distribution Service) 표준 기술 기반의 데이터 전송 방안을 적용함으로 기존 현장의 안전검지장치로부터 발생한 데이터를 통합 및 관리하고 있다. 본 논문에서는 수많은 현장 데이터 중 일반철도 현장에서 발생한 신호설비 데이터 규격 설계를 소개하고 있다. 신호설비 데이터의 DDS 전송을 위하여 기존 표준 규격인 KRS SG 0062를 모델링하고, DDS 데이터 전송 단위인 Topic 설계 및 데이터 변환 방안을 제시하고, 데이터 성격 별로 네트워크 제어 QoS 정책 설계를 제시하고 있다. 또한 실제 현장 데이터를 분석하여 설계된 규격이 현장에 적용 가능한지를 확인해 보았다.

• 한국소음진동공학회논문집
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• 제23권3호
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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.

• 대한토목학회논문집
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• 제35권5호
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• pp.1191-1198
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• 2015

본 연구에서는 국내 일반철도 새마을호 동력차 및 궤도조건을 고려한 차량/궤도 상호작용해석을 수행하였다. 레일표면요철에 따른 레일휨응력을 분석하였고, 레일 휨응력예측식을 도출하였다. 또한, 일반철도 레일강의 S-N선도를 이용한 피로해석을 수행하였다. 파괴확률에 따른 레일피로수명을 산정하였고, 레일연마에 따른 레일표면요철 제거 및 레일휨응력 저감효과를 고려한 레일피로수명 평가를 수행하였다. 따라서, 국내 일반철도에서 레일연마 시행방법에 따른 레일피로수명을 평가하여 제시하였다.

• 한국철도학회논문집
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• 제9권2호
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• pp.137-144
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• 2006

The Extradosed PSC bridge is one of the best alternates which not only covers the longer span than PSC box girder and also performs the role of landmark facility with much cheaper cost than cable stayed bridge. Since the cable-stayed long span bridge is more flexible than general medium span bridges and railway bridges can be experienced resonance phenomenon by repeated equidistant axle loading of the train, it is inevitable to consider the dynamic behavior on impact, deflection and so on. In the present study, the dynamic behavior of an Extradosed PSC railway bridge subjected to moving train forces is analyzed. As well as trains which operate in conventional railway tines, KTX train is also considered. For the estimation of dynamic performances of the Extradosed PSC bridge, vertical deflection, accelerations of the slab, end rotation of the girder and impact on pylons and cables are discussed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.522-527
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• 2005

Rail network authority have to do the safety ensuring activities including the maintenance of railway facility, integrated performance verification between the facilities and related rolling stock and safety inspections, etc. When constructing the new lines or revising the conventional lines, full system commissioning should be done before the revenue service with railway operator. To develop the optimal full system commissioning model, the status of domestic and foreign railway facility and railway accidents are analysed and the problems of the safety management are derived. As one of countermeasures for the problems, the procedures and criteria for the full system commissioning are developed.

• 전기학회논문지
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• 제67권12호
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• pp.1711-1716
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• 2018

Unlike conventional transmission and distribution lines, catenary system for operating electric railway vehicles are composed of multi-conductor groups (feeder line, contact wire, messenger wire, protection wire) and are used for railway employees, public or passengers in the station yards. Electric shock hazards are exposed and electric shocks such as death or serious injury are occurring in electric railway vehicles, railway high-voltage distribution lines, and catenary system. In order to analyze the types of electric shock accidents on railway by systematic approach method, we modeled 'unsafe behavior classification' method using swiss cheese model. Based on this method, we derived the type of electric shock accidents about railway accidents during the last 5 years by analyzing the frequency of occurrence of human errors and unsafe acts, laws and regulations related to violations, and so on.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 춘계학술대회논문집
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• pp.222-227
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• 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.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 A
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• pp.483-485
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• 1999

Recently, distributed control network system has been widely applied to on-board control system than conventional relay logic with control wire. This paper presents two configuration of driver's desk system using TCN(Train Communication Network). One is configured with TCN, the other is partial adoption of TCN.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2000년도 춘계학술대회 논문집
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• pp.51-54
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• 2000

우리나라 철도는 1899. 9. 18 노량진～인천간 33.2km를 개통한 이래 100주년을 맞이하는 해 12월 16일(15:00시) 열차운행 최고속도 300km/h인 경부고속철도 천안～대전간 시험선 구간에서 대통령을 모시고 200km/h로 시험운행을 개시하였다. 21세기를 대비하여 철도기술수준을 국제수준으로 향상시켜 국가경쟁력을 강화해야한다고 생각하며 2004년 경부고속철도 개통을 대비하여 고속철도의 운용효율증대와 많은 국민이 이용할 수 있도록 하기 위해 경부고속철도와 기존철도를 서로 연결하여 운용하는 것이 바람직하여 연결운행방향을 간단하게 의견을 설명하고자 합니다. (중략)