• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1301-1307
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• 2008

The Seoul-Metro is the first city railroad corporation to operate RIMS(Rolling-stock Information Maintenance System). The development of "RIMS Project" and trial running task were started from Mar 29, 2001. Finally, this project was completed successfully on Dec 31, 2005, as integrated systems including light or heavy maintenance works in Ji-Chuk and Chang-Dong Rolling-stock Offices. After that, from 2006 to Dec 31, 2007, we promoted a this new program to other four rolling-stock offices (Su-Seo, Gun-Ja, Sin-Jeong) and the headquarter. For the duration of trial running, we developed and applied new complementary program having made up for the weak points or defects. The series of new program which were newly developed and applied are comprised of an operation management, trouble management, wheel management, heavy maintenance table automatic creation programs and ordering prediction programs to purchase goods smoothly. The Seoul-Metro have registered these programs(RIMS) to Computer Program Protection Committee. We'd like to introduce a composition of program for enhancement of a city railroad Information Systems.

• Proceedings of the KSR Conference
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• 2009.05a
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• pp.1661-1666
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• 2009

This paper is analyzed the effect on characteristics of thrust force of linear induction motor(LIM) by arc type tester. Many kinds of tester have a rotational shape because of a finite length of railroad. Whereas effects by using rotational type tester are generally unknown. For reason of that, this paper is analyzed the effect on characteristics by rotational type tester using 2D finite element method(FEM), and then is compared a thrust force between linear type tester and rotational type tester. Analysis model is decided by numerical modeling for fitting the LIM for propulsion system of light rail, and it is changed to proper arc model. And then we analyzed the arc and the linear model. Consequently, arc type tester is not only useful experiment but also efficient simulation method, and small error is occurred between linear and arc model.

• International Journal of High-Rise Buildings
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• v.4 no.2
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• pp.103-107
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• 2015

China's rapidly growing cities offer a unique opportunity to create highly sustainable communities. Architects and their clients, typically real estate developers, are highly focused on strategies that are effective at reducing energy and water usage at the scale of the individual building or within a master plan of multiple related buildings. However, a closer look at energy consumption reveals that transportation uses more energy worldwide than residential and commercial buildings combined. In light of this, it is appropriate that China is making massive investments in transportation infrastructure like heavy rail rapid transit and grade separated expressways, but the end result of these investments to date has been to enable people to live further from where they work and shop rather than closer - while simultaneously not creating walkable communities. Using positive and negative examples from Asia and the rest of the world, this article will investigate the specific urban design policies such as height limits, setbacks, land use restrictions, parking ratios, and parcel size which might change to enable the creation of truly sustainable communities for China's 21st century.

• Proceedings of the KIEE Conference
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• 1999.07a
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• pp.492-494
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• 1999

To improve safety operation of urban transit, compatible design of signaling system is most important factor at future train operation and management. Therefore, signaling system should be designed compatible transport demand of target year. In addition, signaling system should be designed improved train safety, based fail-safe principle. Most of all, to solve passenger concentration, high density and to improve efficiency of train operation. Headway improvement of train is most important. Train organization length of new urban transit as light rail is generally shorter than EMU. Therefore, to increase passenger service and operation efficiency, minimum headway of one minute in this system should be important required.

• Proceedings of the KIEE Conference
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• 2003.07a
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• pp.549-551
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• 2003

새로운 대중교통수단의 하나로써 경전철을 도입중이거나 계획중인 도시가 늘어나고 있는 추세이다. 경전철은 장거리 선로상에서 이동하는 부하라는 관점에서 전기철도 및 지하철과 유사성을 가지고 있으나, 전철 설비가 도심의 지상에 설치되는 점과 역사설비가 비교적 간단하며 선로의 긍장이 지하철에 비하여 잘은 경우가 대부분인 경우가 특징이다. 본 논문에서는 경전철을 안전하고 효율적으로 운행하기 위한 전제조건이 되는 전력 계통의 신뢰성확보를 위한 경전철 전력계통 신뢰성평가 및 최적화방안을 도출하였다. 계통공급신뢰도는 확률이론을 이용하여 정량적으로 산출할 수 있으며 정량적 신뢰도 산출법을 이용 개별 계통구성요소의 신뢰도 특성으로부터 전체계통의 신뢰도를 계산할 수 있다. 이로써 신뢰도 측면과, 설치 및 유지보수 비용을 고려한 최적의 계통구성방안이 도출된다.

• Proceedings of the Korean Society For Composite Materials Conference
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• 2004.04a
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• pp.55-58
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• 2004

Phenolin resin, prepared form phenol and formaldehyde, is one of the oldest thermosetting resins available. Phenolic resins are cured via condensation polymerization with evolution of water, which in molding process is a big problem. The use of phenolic resins in glass fiber composites is growing, primarily due to their low flame spread, low smoke generation and low smoke toxicity properties. SMC of phenolics has been rearched since the 1986. The technology challenge was to match resin viscosity, handling and cure with those for the polyester SMC to avoid any special processing for fabricators and end users. Phenolic SMC was chosen because of the ease of molding to the required shape with light- weight, thin wall structure and with excellent fire protection.

• Proceedings of the KSR Conference
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• 2003.05a
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• pp.349-355
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• 2003

Traffic congestion caused by cverpopulation has a major detrimental effect on bringing about social and economic problems ia city area. Therefore Un order to maintain and sustain smooth flow of railway system, we are willing to introduce Light Rail Transit System. Rubber wheel type and guideway far AGT have been concentrated on our study Especially, the prototype of LRT turnout system has been developed. Furthermore, the structural analysis for the guideway system has been completed to secure reliability for the LRT system. In the near future, the tumout system of rubber wheel and guideway shall be applied in Korea. We hope reliability fer the system shall be secured without any major difficulties. As a result, we expect to expedite the localization of rubber wheel type and guideway for AGT.

• Journal of the Korean Society for Railway
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• v.8 no.6 s.31
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• pp.597-601
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• 2005

Korea Railroad Research Institute(KRRI) developed the Driverless Rubber Tired Korea-AGT(Model: K-AGT) from 1999 to 2004. We have finished the safety and performance tests of K-AGT. Data obtained from this testing can be used to evaluate the growth of reliability. The most widely used traditional growth tracking model is included as IEC International standard. With the tracking model all corrective actions are incorporated during test, called test-fix-test. In the test-fix-test strategy problem modes are found during testing and corrective actions for these problems are incorporated during testing. In this paper, we demonstrated reliability analysis using growth model of driverless rubber tired K-AGT system to prove reliability of development system. Therefore, we introduce the well-known NHPP model and analyze a reliability growth using ReliaSoft's RGA software.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.203-210
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• 2005

Rockey slopes adjacent to railways are disclosed from severe weathering and hazard of failure of themselves. Consequently it causes directly rockfall or landsliding on the railway. Conventional solutions-rigid system like rocksheds, shotcrete, retaining walls, etc to these causes are limited to protect train, rail, our properties and lives from the harmful attack - rockfall. debris flow and sliding. Flexible concept for solutions with passive and active type method based on Euro Code 7 capable of high energy absorption and light materials are rapidly replacing the rigid systems with natural friendly, early installation, cost and time saving and reducing danger in works all over the world.

• Proceedings of the KSR Conference
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• 2005.11a
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• pp.953-957
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• 2005

Light Rail Transit(LRT) Systems with transport capacity between subway and bus(5,000-25,000 persons per hour) are being carried on over 100 lines around the world. In Korea, to solve the urban transportation problem, the introduction of LRT system has been proceeded positively. It is planned to develop the Korean standard LRT system in which safety, efficiency and cost effectiveness are emphasized. So we were able to make proto type of Rubber tired AGT system for LRT. This is capable of driverless operation using CBTC(Communication Based Train Control) of Moving Block System and is currently making an experiment for reliability in test-line. This study is focused on verifving the train tracking with CBTC in driverless and ATO mode through implementing the examination.