• Title, Summary, Keyword: Railway

Search Result 10,635, Processing Time 0.069 seconds

Research on Transition of Road Bed of Wuhan-Guangzhou Passenger Line and Bridge

  • Kang, Bo-Soon;Jun, Yang
    • International Journal of Railway
    • /
    • v.2 no.4
    • /
    • pp.180-186
    • /
    • 2009
  • High speed railway challenge the design, construction and maintaining of traditional railway, many traditional design concepts have been changed. Transition of railway and bridge has two main problems. one is that different lines have different ability of resisting distortion in area of trial load, which was known that problem of smooth transition of stiffness, the other is that differential settlement between artificial structure and earth structure cause bending of railway. The two problems have effect on train moving. The principle of processing transition of railway and bridge is same in world, but it is difficult to find relationship between design standard of transition, vehicle performance, line standard, design speed and so on form documentation and data reports. Based on mechanics, the paper analyzed dynamic performance of transition of high speed railway, studied various rough elements which is effective to train moving, built mathematical model of interaction of train and transition of high speed railway and developed numerical simulation software. In various different work conditions, we did great quantity of numerical simulation, comprehensive analysis and performance analysis.

  • PDF

A Comparative study of Railway Heritage Conservation System between Japan and UK (일본과 영국의 철도문화유산 보존제도 및 운영에 관한 비교연구)

  • Lee, Yong-Sang;Chung, Byung-Hyun
    • Journal of the Korean Society for Railway
    • /
    • v.15 no.4
    • /
    • pp.394-401
    • /
    • 2012
  • Railway has been used as a transportation method since 18th century. Modern term of railway is defined as use of steam engine. Stockton & Darlington Railway in north western England firstly used steam engine. It was Manchester & Liverpool Railway which firstly ran systematized railroading system. Like this, railway had been developed in diverse forms in various countries, and these traditions are preserved well as time passes. Especially in UK, first country to run railway, has various methods to maintain railway cultural heritage. Japan also has organized railway culture protection system due to fast development of railway and many changes through privatization. In this research, railway cultural preservation systems of UK and Japan's are compated and lessons are looked for Korea. This paper chooses comparative and contrast method, and introduces laws, systems, and examples of two countries to find lessons.

A Study on the Korean Railway Property during the South Manchuria Railway Period (한국철도의 남만주철도주식회사 위탁경영시 특징에 관한 연구)

  • Bae, Eunsun;Chung, Byunghyun;Lee, Yongsang
    • Journal of the Korean Society for Railway
    • /
    • v.17 no.4
    • /
    • pp.297-306
    • /
    • 2014
  • This paper analyzes Japan's consignment management of the Chosun Railway to the South Manchuria Railway. While Chosun Railway was entrusted, its management style differed significantly from that of Japan's direct management. After eight years of trust management, the direct management of Chosun Railway was returned to Japan. This of beyond border trust management is very rare. In addition, the management of Chosun Railway by South Manchuria Railway, which had an operation style similar to that of a private company, led to changes in Chosun Railway. This research analyzes the four key traits of South Manchuria Railway's consigned management. The first key trait is the initial Korean infrastructure and operation separation model. The second key trait is the international transportation and administration segregation. The third key trait is that it expanded the railway related businesses and led to the establishment of private railway companies. The fourth key trait is that the continental linked transportation was activated. Through analyses, it would be to create a comparative study of the resulting East Asian countries' operations. Furthermore, this research will in investigating the nature of Chosun Railway.

A Study on the Rationalization of Management and Maintenance Cost for Railway Investment Assessment - Focus on High Speed Railway - (철도투자평가를 위한 운영.유지보수비용 합리화 방안 - 고속철도를 중심으로 -)

  • Suh, Sang-Kyo;Sung, Deok-Yong;Roh, Byoung-Kuk;Park, Yong-Gul
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.331-340
    • /
    • 2009
  • This study is objected by suggesting rationalization method of management and maintenance cost for railway investment assessment. The estimate of rational benefit and cost are a work of vital importance to decide railway investment as preliminary feasibility investigation is institutionally reinforced since January 2007. In particular, railway management and maintenance cost have to be applied to realistic and detail cost as railway investment assessment guide. For example, types of railway, construction of new line, improvement of conventional line, double tracking, railway electrification. However, railway investment assessment is inconsistency because of estimating the railway management and maintenance cost using existing unrealistic management and maintenance cost. Therefore, this study is performed parametric analysis effecting on the railway management and maintenance cost considered new technique, enhanced facilities and improved standard. Also, it suggests the itemized standard management and maintenance cost. Finally, it will be helped to establish the base of railway investment through the rationalization method of management and maintenance cost.

  • PDF

DEFECT EVALUATION IN RAILWAY WHEELSETS

  • Kwon, Seok-Jin;Lee, Dong-Hyong;Seo, Jung-Won;You, Won-Hee
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.1940-1945
    • /
    • 2007
  • The wheelsets are one of most important component: damages in wheel tread and press fitted axle are a significant cost for railway industry. Since failure in railway wheelset can cause a disaster, regular inspection of defects in wheels and axles are mandatory. Ultrasonic testing, acoustic emission and eddy current testing method and so on regularly check railway wheelset in service. However, it is difficult to use this method because of its high viscosity and because its sensitivity is affected by temperature. Also, due to noise echoes it is difficult to detect defects initiation clearly with ultrasonic testing. It is necessary to develop a non-destructive technique that is superior to conventional NDT techniques in order to ensure the safety of railway wheelset. In the present paper, the new NDT technique is applied to the detection of surface defects for railway wheelset. To detect the defects for railway wheelset, the sensor for defect detection is optimized and the tests are carried out with respect to surface and internal defects each other. The results show that the surface crack depth of 1.5 mm in press fitted axle and internal crack in wheel could be detected by using the new method. The ICFPD method is useful to detect the defect that initiated in the tread of railway wheelset.

  • PDF

The fundamental study on improvement of railway accident survey system (철도사고조사제도 개선에 관한 연구)

  • 정병현;문대섭;왕종배
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.913-921
    • /
    • 2002
  • Recently, fundamental innovation for the improvement of Korean railway industry is proceeding with the vertical separation into infrastructure and operation, and the privatization of railway operation. And also, with the advent of an era of high-speed railway, starting of Korea Train Express (KTX) will give a great change to circumstances of railway industry. It requires that a railway safety regulation policy and accident survey system cope effectively with this restructuring of railway system. Under these great changes, safety must have the first priority, and the function of management and supervision on railway safety will be ten to the governments responsibility; In this paper, according to changes of railway safety management system, foreign states railway accident system and direction of korea railroad accident survey system will be also introduced.

  • PDF

Safety Levels Apportionment in Railway System

  • Rafrafi, Meriem;El Koursi, El Miloudi;Bourdeaud'Huy, Thomas
    • International Journal of Railway
    • /
    • v.1 no.4
    • /
    • pp.157-168
    • /
    • 2008
  • The creation of a single European rail transport market it is important to increase confidence between the actors on the market and between member states who shall ensure that railway safety is generally maintained and, where reasonably practicable, continuously improved. For this purpose the European railway safety directive introduces a mechanism to adopt a Common Safety Targets (CST) expressed in risk acceptance criteria for individuals and for society. This paper focuses on the apportionment of safety targets for European railway system. We develop a generic approach based on the Functional Hazard Analysis (FHA), to analyse the safety of railway systems for a unified European network and to comply with the CSTs required by the European railway Safety Directive. We suggest to combine the FHA technique with the functional railway architecture to allocate the safety targets to the railway functions.

  • PDF

Plans for systematizing Railway Safety Regulations using a New Model for Railway Safety System Architecture (철도안전시스템 아키텍처 모델링을 통한 안전규제 체계화 방안 연구)

  • Park Young-Su;Cho Yeon-Ok;Hong Seon-Ho
    • Proceedings of the KSR Conference
    • /
    • /
    • pp.7-14
    • /
    • 2005
  • A Structure of a system is usually described as same as an architecture, but they are basically different. The architecture has a broader meaning than a system structure. In other words, an architecture can include many of system structures. So, to define the architecture, we need to consider how functions of a system are consisted and integrated. The architecture defined is applicable to railway safety management systems, and it can be made as a new model for railway safety systems, which is useful to systematize railway safety regulations. To establish the architecture as applicable to railway safety regulations, it is required to compare between regulation relations by analyzing roles before/after executing railway safety regulations. Therefore, in this research, we reviewed and classified different types of regulation conditions and safety requirements for railway systems and a variety of conditions before/after railway safety regulations changes are compared by defining system architectures subject to National railway safety.

  • PDF

Applicability and Methods of Lean Production in Railway Transportation Organization: A Case Study of Urumqi Railway Bureau in China

  • Li, Hong-Chang;Rong, Chao-He;Song, De-Xi
    • International Journal of Railway
    • /
    • v.1 no.2
    • /
    • pp.45-58
    • /
    • 2008
  • The concept of lean production originated and was applied mainly to manufacture industries Even proven successful with such companies as Toyota, lean production has to be combined railway transportation production in order to bring its function into full play. The paper analyzes for applicability of lean production in railway transportation production organization, puts forward implementation methods such as transportation resource integration, station-zone organization, dispatch command optimization, railway performance evaluation index system, etc., and makes an exemplification study of lean production of Urumqi Railway Bureau in China, which testifies the applicability and efficiency of railway lean production.

  • PDF

A Study on Configuration of Electrical Power Distribution System for Railway (철도 배전 계통의 최적 구성 방안에 대한 연구)

  • Lee, Gyu-Dae;Kim, Kwang-Ho
    • Journal of Industrial Technology
    • /
    • v.31 no.B
    • /
    • pp.17-21
    • /
    • 2011
  • Since the railway passenger services have been recognized as important factor for success in railway, electrical energy consumption in railway station for high quality service has greatly increased. Furthermore, the number of the private railway station has gradually increased. Therefore, the operation conditions for railway power distribution system is dramatically changed in comparison with the past. So, this paper proposes the optimal construction method for railway power distribution system considering economical efficiency and the reliability of power supply to establish the railway power distribution system standard for the future railway industry.

  • PDF