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여인호 ( Yeo¸ Inho ),엄주환 ( Um¸ Juwhan ),엄기영 ( Eum Kiyoung ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.2
The track impact factor of conventional line was estimated using the data for measured wheel load in field test and the properties of current operating trains. The equation for track impact factor was presented through the statistical analysis of variational ratio in wheel load and compared with other design equations in domestic and foreign countries. A review on the safety of track system in conventional line was made from the relationship between the velocity and the corresponding impact factor. It was found that the impact factor from the proposed equation is a little less than the values from the equations adopted in both AREA and domestic railway, while it is same as the equation for continuous welded rail(CWR) in Japan. Therefore it could be said that the track satisfies a criteria for dynamic load caused by the train and the corresponding level of safety is guaranteed for dynamic load of the train.
여인호(Yeo Inho) 한국구조물진단유지관리학회 2005 한국구조물진단학회 학술발표회논문집 Vol.9 No.2
CWR(Continuous welded rails) is adopted to increase transit speed of train and passenger comport in the conventional and new railway lines in Korea. Axial force of rail should be checked to ensure the safety of CWR against bucking or disruption of the rail. Because of Interaction between track and bridge, the axial force can be one of critical design factors on the design of a bridge. Interaction between track and bridge is investigated according to UIC Code 774-3R usually. In this code the maximum permissble compressive/tensile stress is restrained under the regulated values. And there are regulations for the absolute and the relative displacement about the rail and the girder as well as the end rotation of the deck in the code.
여인호 ( Yeo Inho ) 한국구조물진단유지관리공학회 2005 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.9 No.2
CWR(Continuous welded rails) is adopted to increase transit speed of train and passenger comport in the conventional and new railway lines in Korea. Axial force of rail should be checked to ensure the safety of CWR against buckling or disruption of the rail. Because of Interaction between track and bridge, the axial force can be one of critical design factors on the design of a bridge. Interaction between track and bridge is investigated according to UIC Code 774-3R usually. In this code the maximum permissible compressive/tensile stress is restrained under the regulated values. And there are regulations for the absolute and the relative displacement about the rail and the girder as well as the end rotation of the deck in the code.
여인호(Inho Yeo),김준범(Junbeum Kim),강석교(Sukkyo Kang),김진범(Jinbeum Kim) 한국환경교육학회 2012 環境 敎育 Vol.25 No.1
The goal of this study, as an effort to reduce national greenhouse gas (GHG) emissions, is to calculate the carbon footprint of students based on the commute pattern of high school students in big (Seoul), middle (Suwon) and small (Icheon) size city. By conducting a survey, the commute pattern and method of students as well as students carbon footprint were evaluated. As a result, the carbon footprint of the high school student in Icheon (1.698 kgCO<sub>2</sub>) had 2~3 times higher than students carbon footprint in Seoul (0.623 kgCO<sub>2</sub>) and Suwon (0.699 kgCO<sub>2</sub>). One of the reasons for the different carbon footprint result between big and small city was whether the public pedestrian facilities and a bicycle path or not. Based on our research results, we pointed out the problems and suggested some ways to reduce carbon footprint of students.
여인호(Yeo Inho),엄주환(Um Juwhan),엄기영(Eum Kiyoung) 한국구조물진단유지관리학회 2004 한국구조물진단학회 학술발표회논문집 Vol.- No.-
The track impact factor of conventional line was estimated using the data for measured wheel load in field test and the properties of current operating trains. The equation for track impact factor was presented through the statistical analysis of variational ratio in wheel load and compared with other design equations in domestic and foreign countries. A review on the safety of track system III conventional line was made from the relationship between the velocity and the corresponding impact factor It was found that the impact factor from the proposed equation is a little less than the values from the equations adopted in both AREA and domestic railway, while it is same as the equation for continuous welded rail(CWR) in Japan. Therefore it could be said that the track satisfies a criteria for dynamic load caused by the train and the corresponding level of safety is guaranteed for dynamic load of the train