• 한국철도학회:학술대회논문집
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• 한국철도학회 2011년도 춘계학술대회 논문집
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• pp.390-400
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• 2011

Light rail are being constructed in cities have populations of mare than 700 thousand in the country as well as many cities in the world as an environmental and a low caron public transit. This paper reviews the capacity selections of electric power system about Light rail transit according to rail, vehicles, operation conditions.

• 한국군사과학기술학회지
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• 제20권1호
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• pp.129-136
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• 2017

This paper aims to establish a guideline for ridership capacity of different rail vehicles for military passengers. Previous guideline is limited only to a Mungungwha(hauled by diesel locomotive) vehicle, but this paper expands the limitation to ITX- Saemaeul and urban rail vehicles classified to Electric Motivated Unit(EMU). The guideline considers both with and without personal armor conditions, and based on repetitive ridership experiments. The experiments are designed under considerations of the required number of soldiers for the sample spaces of the different rail vehicles. Moreover, the design tries to establish a concept of optimal capacity additionally to a traditional limiting ridership capacity. In order to do this, ridership comfort is questioned to participant soldiers repetitively over the experiments and all answers of them are surveyed as a results of it. The results of the experiments presented by this paper can be referenced to establish a new guideline on ridership capacity for Korean army.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2000년도 추계학술대회 논문집
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• pp.696-703
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• 2000

This paper describes the capacity calculation of power supply system for light Rail Transit Three factors are considered for the design i.e. substation arrangements, line configuration and substation power capacity. In this study, we considered all of them for capacity calculation of power supply system for LRT. At first DC-fed-traction system is introduced on an outline, a characteristics of train and fed network, and design method of substation arrangements. Optimal design procedures are described, and program for capacity calculation of the system is presented. In addition, the computer simulated results are computed with the conventional simple calculation method.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2002년도 추계학술대회 논문집(I)
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• pp.320-325
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• 2002

The rail reform in Korea is to separate passenger transportation from freight transportation as a way to vitalize rail freight. The author review the problems rail freight faces, the aims of rail reform, the possibility to introduce competition into the rail freight operation, foreign cases of rail freight and make suggestions about the vitalization of rail freight transportation such as industry structure possible for door-to-door service and low cost operation, freight transportation policy of government, capacity expansion, preparedness for internationalization, mechanism for increasing transparency between users and operators and transfer to commerciality of the carrier.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.1495-1500
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• 2006

A signal system is critical point of transport capacity and train operation in urban rail transit. Today the moving block system by radio is taking place of the fixed block system by track circuit for efficiency and short headway in underground railway and right rail transit. In this study, assuming specification of a train, track and control system, the minimum headway on the moving block system and the fixed block system is researched for the maximum transport capacity.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2004년도 추계학술대회논문집
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• pp.570-573
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• 2004

Conventional methods for reducing vibration in engineering designs may be undesirable in conditions where size or weight must be minimized, or where complex vibration spectra exist. Some alloys with a combination of high damping capacity and good mechanical properties can provide attractive techanical and economical solutions to problems involving seismic, shock and vibration isolation. In this paper, it showed the noise and vibration characteristic was compared conventional rail joint to improved rail joint(damping alloy) for reducing noise and vibration. Its applicability to rail joint is discussed.

• 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.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2001년도 추계학술대회 논문집
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• pp.322-328
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• 2001

In the electric railway systems, it is very important that we should design the system configuration, location and power capacity of substation. This paper presents the results of system configuration and system design of the DC traction power supply for the test line of Light Rail Vehicle. The voltage fluctuation of train and the power capacity of substation are calculated by computer simulation using the nodal equation, K.C.L／K.V.L, Ohm's law and superposition theory.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.1-6
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• 2003

In this paper, we design a wedge type rail clamp which can protect container crane from wind with constant clamping force regardless of the operating period. When we design wedge type rail clamp. it is important to determine the angle of wedge and analyze a contact condition of roller and wedge so that we might develop a rail clamp with variable capacity. Therefore, this paper suggest a process to decide wedge angles within feasible range which could be obtained using load analysis and FEA of wedge type rail clamp.

• 한국방재학회 논문집
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• 제7권1호통권24호
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• pp.29-38
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• 2007

틸팅차량의 안정성 확보를 위해 궤도부담력과 주행안정성 검토가 이루어졌으며, 틸팅차량이 궤도부담력과 주행안정성 검토에 의해 산정된 허용속도로 운행될 경우 레일이음매 하부 노반침하에 대한 연구가 수행되었다. 열차 주행시 레일이음매와 장대레일에 작용하는 충격량이 다르기 때문에 장대레일 하부 노반에 대한 안정성 검토가 추가적으로 필요하다. 본 연구에서는 장대레일에 대하여 노반의 침하량 및 지지력을 수치해석을 통해 검토하고 허용침하량 및 허용지지력과 비교하여 노반의 안정성을 검토하였으며 레일이음매와 장대레일 하부 노반의 침하량 및 지지력을 비교 분석하였다. 그 결과, 장대레일 및 레일이음부 하부 노반의 침하량은 허용침하량의 71.2% 및 88.8%, 응력은 허용지지력의 10.4% 및 12.1%로 나타났다.