• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.214-219
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• 2008

Recently, railway has been pointed to the efficiency of transportation, rapid transit, and comfortable train ride. In the case of domestic situation, both rapid transit railway and existing railway have been operated in higher speed and the construction of railway near the city building has been increased as well. Because of the rapid transit system and heavy railway, the noise and vibration of railway has been increased so that the strong standards in terms of environmental matter should be required. Therefore, the solution to avoid environmental matters becomes one of the most important factor in constructing railway. In this study, floating slab system which is one of the solution to avoid noise and vibration in railway has been introduced, and the foreign technology and the trend of this business has been investigated. In addition, the method of conceptual design and construction of floating slab system according to the isolator has been introduced.

• 전기학회논문지
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• 제64권4호
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• pp.646-652
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• 2015

Increasing needs for rapid driving vehicles during rush hour, there are various researches how to operate or allocate rapid driving vehicles with the existing normal driving vehicles. In the aspect of power system, it should be preceded by an analysis for power equipment capacity. Also, it should be studied whether the added rapid driving vehicles gives a bad effects for stable operation of railway systems or not. In order to derive the results for these analysis processes, this paper suggest a novel analysis algorithm which can implement integrated analysis including rapid and normal driving railway vehicles simultaneously. This algorithm has been verified using Seoul Metro 7 Line data.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.501-506
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• 2004

This paper aims to suggest the feasibility of rapid operation scheme generated in preceding study, 'A study on development of operation planning for rapid service in urban railway(An introduction)' through application it to present subway lines in Seoul Metropolitan area. In case of line 3, without the Passing Track 'Turning train outstrip mode' is the best policy. In case of line 4, with the Passing Trank 'Passing track mode' may be the best way to realize the this scheme. Also, there is feasibility in the line 1, line 5, line 6, line 7 but there is no possibility it is applied to line 2 and line 8. In conclusion, this paper is intend to suggest the possibility of rapid operation in urban railway by presenting real operation scheme, time tables and amount of power usage and the number of composing trains and variety of demand,

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 춘계학술대회 논문집
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• pp.522-527
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• 2004

Nowadays, becoming wide area is going on over Seoul Metropolitan area. But urban railway, very important traffic facilities, is operated in normal operating position and it gives cause to week the function of commuting long distance. This paper is focus on studying the feasibility of rapid operation system in Seoul Metropolitan area through comparing the present state of urban railway in Seoul Metropolitan area with a case of the advanced facilities in developed country. And we develop rapid operation system in general aspect through only consideration of operation planning without improvement of facilities. Also, we come up with new concept of rapid operation system through investigation of limits of the preceding researches

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 춘계학술대회논문집
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• pp.673-676
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• 2007

These days, the damage of noise has increased seriously by rapid change of life style because of the centralization of urban population, and the rapid increase of traffic. The Ministry of Environment has emphasis on the systematic management about the noise of daily life and the close connection of daily noise management policy with relevant ministries, and put into practice "the master plan of lessening the noise of daily life" from year 2006. This study tried to find out the reduction methods and the effective management of railway noise in the action plan of railway part of "the master plan of lessening the noise of daily life". According to this study, railway noise can be reduced greatly by taking action of railway detail plans. The cause of railway noise varies by rolling stock, track and more, so the reduction methods of railway noise can be studied specially, scientifically and constantly in every field.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 추계학술대회 논문집
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• pp.1900-1906
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• 2008

신도시 개발 등으로 대도시의 생활권이 확대됨에 따라 수도권 교통의 광역화가 지속적으로 진행되고 있어 대도시권내의 광역교통문제해소 및 혼잡비용 최소화를 위한 체계적이고 지속 가능한 장기 마스터플랜 구상이 필요하게 되었다. 이에 따라, 최근 경기도에서는 동탄 신도시와 서울 강남을 20분대에 연결할 수 있는 대심도 급행전철 사업을 구상하였다. 국토부에서는 경부고속철도 2단계와 호남고속철도 완공에 따른 선로용량 부족해소와 수도권 및 경기 남부 지역 주민들에게 고속철도 서비스제공을 위한 강남권 고속철도 노선(수서${\sim}$동탄${\sim}$평택) 건설이 필요한 것으로 "수도권 철도망 개선방안 연구용역(2007.12)" 결과를 발표하였다. 경기도에서 추진 중인 광역급행전철과 강남권 고속철도 노선이 중복됨에 따라 국토의 이용 효율성 향상과 국가재정의 효율적 투자를 위해 고속철도의 선로 여유용량을 활용한 광역급행전철 혼용에 대한 검토가 필요할 것으로 판단된다. 따라서, 본 연구에서는 고속철도와 광역급행전철을 혼용 운행할 경우 노반분야 및 E & M 기술조건, 중간역 계획, 열차운영계획 등의 분석을 통해 최적화된 혼용운영 방안과 사업비 절감효과 등을 제시함으로써 동일선로에서 이종의 열차가 운행됨에 따른 철도사업의 투자효율성 제고 방안을 제시하고자 한다.

• 대한교통학회지
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• 제27권3호
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• pp.131-140
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• 2009

철도서비스 개선을 위한 기존선의 복선, 전철화, 상호직결운행 등 철도네트워크의 기능강화사업이 활발히 추진되고 있다. 본 논문에서는 철도네트워크 기능강화와 같이 새로운 철도서비스가 제공될 경우 타 교통수단으로부터 어느정도의 전환수요가 발생되며, 철도이용패턴은 어떻게 변화될 것인지에 대해 대구권 철도서비스 개선의 사례연구를 대상으로 SP와 TP자료에 의한 전환수요분석모형을 검토하였다. 모형분석 결과, 총통행시간과 통행비용의 파라미터 추정치가 충분한 설명력을 나타내고 있으며, 특히 SP의 보완적 조사로서 TP데이터를 이용할 경우, 철도요금과 통행시간 설정에 따라 전환수요경계치를 쉽게 파악할 수 있어서 대구권 광역철도를 비롯하여 타 지역에서도 보다 실용적으로 적용할 수 있을 것으로 판단된다.

• International Journal of Railway
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• 제5권1호
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• pp.1-9
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• 2012

Reliability means that a product maintains its initial quality and performance at a certain period of time (time, distance, cycle etc) under given condition without failure. The given conditions include both environmental condition and operating condition. Environmental condition means a common natural environment such as temperature, humidity, vibration, and working condition means an artificial environment such as voltage, current load, place for installment, and hours of use, which occurs during the life of the product. In the field of railway vehicles, it is mandatory to use a part with the proved reliability as the extension of the life of vehicle become highly necessary. But the reliable assessment method for the reliability of the part is insufficient. If the reliability of the railway vehicle parts could be assessed by using the field data, the reliability of the entire system could also be evaluated reliably. In this study, life span of micro-switch for master controller is analyzed and prediction is performed based on its field data given by an operator considering the special circumstances of railway vehicles such as the operation of a large number of trains on the same line.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 춘계학술대회 논문집
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• pp.126-132
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• 2003

Recently with the rapid development in mobile communication, the mobile phone are utilized in many fields of railway system within country and abroad and its use tends to increase continuously. In the railway system, the applicable realm is spreaded to the fields of railway signal communication, railway operating, track maintenance, reservation and information service, also its role is expected to increase. In this thesis, we are surveying the usage application of home and abroad mobile phone in railway system. Studying the present condition of mobile communication in railway system, we are viewing the application plan and the direction of development.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2009년도 춘계학술대회 논문집 특별세미나,특별/일반세션
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• pp.659-662
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• 2009

Railway has been pointed to the efficiency of transportation, rapid transit, and comfortable train ride. the construction of railway near the downtown area and station building are increasing for maximization of utilization and convenience. but the heavy of transportation and rapid transit lead to increase noise and vibration. the noise and vibration of railway may cause the civil appeal, decline in the serviceability and insufficiency of environmental standard. In this study, floating slab system which is one of the solution to avoid noise and vibration in railway has been introduced, and analyzed floating Slab Track into arrangement of reduction material of vibration. As a result of analysis, It was estimated the bearing installation though slab have not a negative factor and terminal arrangement of reduction material of vibration have advantage for static behavior.