• Proceedings of the KSR Conference
• /
• 2011.10a
• /
• pp.1412-1417
• /
• 2011

Safety is soaring up as a core value in accordance with the recent improvement of operating speed & incidents. rolling stock is a kind of system which works together with several components. one component has an effect on the sub-system, which can cause to the train safety operation, therefore reliability management of the major components of rolling stock is a kind of solution to the safety operation of train, but realistically maintenance in korea performed based on period rather than TBO of major components, but Japan does new maintenance system based on the major components, which optimizes maintenance tasks. actually Japan can apply to new maintenance system because they are ready in planning step but in this study, making a reliability data of major components and review the adaptability of new maintenance system to the rolling stock operating in Ansan line.

• Proceedings of the KSR Conference
• /
• 2004.06a
• /
• pp.397-404
• /
• 2004

The higher costs of logistics in Korea than those of other developed countries have been considered as a main factor to reduce national competitiveness. In addition, the international logistics has become more important than before as trade across countries have increased with globalization. This study measured the rate of international logistics absorption as total trade volume compared total domestic consumption expenditure. The measure showed that USA($26\%$), japan($31\%$), and China($l12\%$) are important countries for Korea to cooperate for the international logistics and its standardization. However, for these countries, Korea is not important country in terms of the international logistics because the absorption rates of these countries to Korea are relatively very low as they shows $0.8\%$, $8\%$, $1.85\%$ in USA, China, and japan, respectively. Thus, we need international strategies in logistics fields to cooperate with these countries.

• Proceedings of the KSR Conference
• /
• 2006.11a
• /
• pp.239-252
• /
• 2006

The existing track structure for urban Maglev system is designed for the Maglev vehicles of HSST in Japan and UTM in Korea. The tracks hvaing cross beams for supporting rails are located on bridge girders and have several draw backs. Linimo in Nagoya, Japan, the first commercial urban Maglev line, has separated tracks from a bridge to overcome the previous track structure. However, the Linimo just put the existing track on bridge deck. This study suggests a improved track structure for urban Maglev system and compares the behavior of the new and existing track through static structural analyses. In the improved track, the power collector of a Maglew vehicle is installed parallel to the bridge deck surface, and, thus, the bottom width of the track structure is not limited by the vehicle's width. Therefore, the live load is distributed more effectively by the wide bottom of the track. Also, steel plates instead of steel cross beams are used to support rails, and, thus, the rail's deflection is improved.

• Proceedings of the KSR Conference
• /
• 2007.05a
• /
• pp.40-44
• /
• 2007

Light rail vehicle is optimized vehicle system for complex urban circumstance. LRT systems have many merits such as improve accuracy, speediness and safety. There are many LRT systems such as monorail, tram, automated guideway transit, linear induction motor propulsion and so on. These systems have operated in Japan and other advanced countries. In Korea, local government has many projects to apply the advanced LRT system. But there are no standardized specification, performance test specification, construction specification for monorail system, linear induction motor propulsion system, tram in Korea up to now. So, we need to establish of standardized to economical construction and safety. The linear induction motor system has been usually applied in Japan subway and ART(Advanced Rapid Transit) of Canada. In Korea, the linear induction motor system has been adopted for Yongin LRT and currently under construction. This paper covers the contents and technical base for main items of rolling stock, performance standard, carbody structure, bogie, electronic unit and brake equipment in order to implement linear induction motor LRT system according to local conditions.

• International Journal of High-Rise Buildings
• /
• v.4 no.3
• /
• pp.199-207
• /
• 2015

Abeno Harukas is the tallest building in Japan and is located in Abeno, which is one of the three main railway transport nodes in Osaka. This building has a height of 300 meters, and its lowest levels are 30 meters below ground. It contains a department store, museum, offices, a hotel, and an observatory. In this urban renewal project, a section of the department store that encloses the station was dismantled and replaced by a supertall building complex, while infrastructure was simultaneously constructed, including: upgrades to the station and the existing department store, improved connections to the subway and pedestrian bridges, and a new pedestrian walkway over the road. In this paper, the ingenious erection processes, newly developed technologies, and precise construction management techniques are introduced for Japan's tallest building.

• Journal of Korean Society of Forest Science
• /
• v.20 no.1
• /
• pp.51-60
• /
• 1973

The trend and achievments of soil erosion control research in Japan were investigated through observation tours and reference work and following facts were found to be important aspects which should be considered in the soil erosion control research program in Korea. Experiments on forest and water relations, and ground water phenomena at the water source zone in Tokyo University. Studies on land-slides and erosion control dam in Kyoto University. Studies on mud-flow and snow avalanches in Hokkaido University. Studies on sanddune fixation and disaster damage prevention forests in Kyushu University. Studies on forest denudations in Nagoya University. Studies on Greening-works and soil erosion prevention chemicals in Tokyo Agriculture University. Training on planning of erosion control works and prevention of disaster damages in Forest Research Institute. Experiments on soil erosion phenomena and infiltration in Tohoku Branch, FRI. Experiments on erosion and surface stratum failure of steep slopes and their prevention methods in Railway Technical Research Institute.

• Proceedings of the KSR Conference
• /
• 2008.11b
• /
• pp.1821-1832
• /
• 2008

Presently, the policy base of our government focusing on the privatization of public corporation with the transfer of political power, KORAIL, one of public corporation, also can not be free from there. the policy line of our government to privatize KORAIL following the developed countries' precedent has been advocated repeatedly already since the 1990's. whenever it happened, it was true that government as well as KORAIL researched on the success or failure case of privatization in developed countries, but considering lessened pressure to the public corporation during Nor's administration, I researched on the privatization of overseas' railways to remind you of what is advantage or disadvantage. In this research, treated Japan's case which is considered one of most successful privatization story in several cases. with the result of this research, which is expected to be utilized setting the policy of privatization direction, if KORAIL tried to be privatized once again.

• Proceedings of the KSR Conference
• /
• 2008.11b
• /
• pp.695-697
• /
• 2008

Reduction of $CO_2$ emission is one of major issues in the whole industries, especially transport system. Railroad companies in the advanced countries such as EU, Japan, etc. have made great efforts on the improvement of their systems including energy sources, operational efficiency and PR of achievement resulted. Recently, to emphasize the environment-friendly characteristics of the railroad as public transport, the importance of PR is emerging. The achievements were listed in annual, sustainability and corporate responsibility reports. And the superiority of railroad in $CO_2$ emission can be confirmed in web sites and simple advertizing materials. In this study, we proposed the PR programs of achievement and ongoing works in Korean railroad through the case studies on web-based and off-line programs of railroad companies in EU and Japan.

• Proceedings of the KSR Conference
• /
• 2001.10a
• /
• pp.467-474
• /
• 2001

The KNR(Korean National Railroad) is trying to set a new rail standard to back up the speed-up policy of the conventional railways. This work has passably significance since the rail standards used were introduced from Japan without the consideration on our situation. The contact analysis between wheel treads and rail heads, attended with complex calculation and the wear experiments taken long time should be accomplished for the exact investigation to establish a new rail standard. However, this paper just concentrates the structural investigation of the proposed rail standard and the dynamic analysis between trains and rail models with intent to shift the above procedure on the next step.

• Proceedings of the KSR Conference
• /
• 1998.05a
• /
• pp.203-210
• /
• 1998

Rail transport has grown over the Past decades, and rail networks have highly concentrated in urban area, and it is possible for rail passengers to choose a route anions a number of alternative routes. Analysis of factors influencing the choice of route, are required to estimate the rail travel demand of each route. In this paper, we describes route choice model for the transit assignment and characteristics of the route choice(i.e., by relative travel time and fares), and attempts to estimate travel demand of new rail transit based on the slated preference(SP) survey data of Nanko Porttown, which is located in Osaka, Japan.