• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1694-1714
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• 2007

This study is to estimate economic benefits of Standardization R&D of Urban Rail System. Benefit was to be realized through standardization of main areas such as train vehicle, railway, power system, and signal system. To derive and calculate the quantitative benefit, the sources of economic impact was divided into three dimensions -operational cost savings, import substitution, and safety effects. Economic effect of the standardization was categorized based on a modified BSC model. Economic benefits from time and labor savings are converted into cost savings. Import substitution and investment multiplier effect have a positive impact in addition to cost savings. The estimation of the standardization R&D of Urban Rail System was conservatively estimated 370 billion Won. Cost effectiveness of standardized safety system was conservatively translated into economic benefit in this analysis. This study provides a practical guide to economic evaluation of the various railway R&D projects.

• 조명전기설비학회논문지
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• 제23권11호
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• pp.44-51
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• 2009

A variety of Urban Rail Transit (URT) systems have been operating and they have different technology bases, causing a lot of difficulties in taking measures against trouble, training, upgrading, interoperability and so on. As such, a standardization project has been carried out to solve the problems by setting up the national standards for URT systems. A common database was built to provide the integrated engineering environment to the community of URT project. This paper discusses the design of the database and how it can be utilized in the successful promotion of the project. The products of the projects are stored into the database with traceability management to be referred to by other new URT projects for reusing and sharing the acquired knowledge through cross organizations.

• 전기학회논문지
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• 제63권11호
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• pp.1594-1601
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• 2014

In this paper, we propose the LQ servo control method for the automatic train control of urban rail vehicle. Structures of the conventional PID control and LQ servo controller are compared in order to demonstrate the simplicity of the proposed controller which doesn't have zeros of the closed loop systems. The energy consumption is dealt with as an object function to be minimized, which consists of the quadratic performance indices for optimal control with the input of the feedback linearization. The effectiveness of the proposed method is shown by the practical example, compared with the conventional PD controller.

• International Journal of Railway
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• 제2권2호
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• pp.80-92
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• 2009

Successful market adoption of rail freight transport innovations that might offer opportunities for market share increase is the focus of this paper. Firstly, seen from a theoretical point of view, it is not incremental innovations but radical organizational and transformation innovations that are likely to increase the market share of rail freight transport. Secondly, the particular inovations that offer some success potential for market adoption are: dedicated infrastructure, the fixed timetable, locomotive upgrades, and INTERFACE. Thirdly, unfortunately, the opportunities to increase the market share of rail freight transport appear to be limited.

• 교육시설
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• 제15권4호
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• pp.14-25
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• 2008

The Purpose of this study is to find out the renewal methods of Dae-jun railway station areas, focusing on the domestic/foreign case studies of the railway station areas and the possibility of the Industry-University-Institute collaboration in this area. As a result, this study shows that the revitalization for the impact area around rail transit station in the aspect of urban spatial structure, mixed land use, type of facilities and exchanging transit system of mass traffic etc, as well as such non-physical aspects as Industry-University-Institute collaboration and administrative planning. It does so by strengthening ties between hardware and software studies of urban planning and University Facilities planning. Finally this study suggested the strategy for the renewal of impact area around the rail transit stations.

• 한국음향학회지
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• 제18권1호
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• pp.32-37
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• 1999

철도소음·진동은 철도변에 거주하는 인근 주민들에게 커다란 불만족 인자로 등장하고 있다. 특히, 철도소음은 철도변에 거주하는 주민들에게 정신적, 심리적, 육체적으로 심각한 영향을 미치고 있으며 이로인해 철도변에 거주하는 주민들은 많은 괴로움을 호소하고 있는 실정이며, 특히 본 설문조사 결과 철도변 주민들은 경제적인 보상보다는 쾌적한 주거환경에 더 많은 관심을 가지고 있는 것으로 나타났다. 그럼에도 불구하고 국내의 경우 철도소음에 대한 심각성은 인식하고 있지만 구체적인 자료의 축적 및 연구가 이루어지지 않아 효율적인 대책수립이 매우 어려운 실정이다. 이러한 관점에서 본 연구에서는 철도변 주민들을 대상으로 설문조사를 실시하여 철도소음의 실태 및 영향을 파악해 보았으며, 이를 토대로 향후 효율적인 철도소음의 대책수립 및 철도소음에 대한 세부적인 기준설정을 위한 기초적인 자료를 제시하고자 한다.

• 한국철도학회논문집
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• 제17권3호
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• pp.193-200
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• 2014

본 연구에서는 도시철도 콘크리트궤도 장대레일에 대한 실내피로시험을 수행하였고, 장대레일 잔존수명을 표현한 파괴확률 50% S-N 선도는 적은 실험데이터에 대한 가중치 확률 해석기법을 사용하여 도출하였다. 여기서 피로시험에 사용된 레일들이 누적통과톤수가 서로 다르기 때문에 누적통과톤수를 평균하여 반복횟수를 수정하였다. 또한, 레일표면요철 및 열차속도를 고려한 레일 저부 휨응력은 기존 연구결과 도출된 레일휨응력 예측식을 사용하여 콘크리트궤도 장대레일의 잔존수명을 평가하였다. 레일 피로수명 평가결과, 레일 피로수명이 기준치에 비해 약 2억톤이상 높았다. 또한, 자갈궤도에 비해 콘크리트궤도 레일의 피로수명이 약 3억톤이상 높은 것으로 분석되었다. 따라서 도시철도에서 레일교체기준을 자갈궤도와 콘크리트궤도로 구분할 필요가 있으며, 레일연마를 통한 레일관리가 이루어진다면 기준치가 아닌 목표치로 관리할 수 있을 것으로 판단되었다.

• KIEAE Journal
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• 제15권5호
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• pp.21-33
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• 2015

Purpose: Domestically, a recent controversial part on Mixed-Use Development is its case that utilizes railroad sites among urban infrastructure. but most of all, a concern is being concentrated on the Mixed-Use Development that uses railroad depot. It has the advantage, which can give diversity and publicness to urban environment by using and planing the upper and bottom of railroad depot, a proximity site as Development Available Land. However, there are few cases except for only Yang-cheon APT in SinJeong railway depot as a domestic case even though a domestic concern about Mixed-Use Development is rising more than ever. Method: Accordingly, this study has something in common with a domestic case, dealing with a case of development in Hongkong that enhances efficiency for city space through Mixed-Use Development and solves various urban problems. Result: A purpose of this study, based on overall comprehension about Rail and Property Model of MTRC in Hongkong, is to figure out how it solve various problems in Mixed-Use Development using Railway Depot or stations in the base of Rail and Property Model of MTRC.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.1646-1651
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• 2004

This primary study describes some proposition of restoration and rehabilitation of rail station and station impact area for efficient use. Therefore, I reviewed the functions and roles about rail station and other railway facilities related with urban structures and development, and also analysed the case studies about realignment of rail station, and then, suggested primary management plan of efficient railway installation. This study has some bounds and limits owing to the descriptive reviews but not detailed analyses. Hereafter, I am planning to consider the management plan for efficient railway installation use as coinciding with specific city characteristic and comprehensive plan such as rearrangement of the station.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2005년도 추계학술대회 논문집
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• pp.500-509
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• 2005

Light-rail transit system has many characteristics of better accessibility. frequency service, low construction cost, reduced air pollution and medium-capacity public transport etc. Light rail transit system as a urban transportation system has been growing worldwide since the late 20th century. More than 300 cities around the world have light railway systems. Many medium-size cities in domestic site is planning the construction of light railway. This paper describes the development strategies for the light rail transit industry.