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틸팅차량과 용접형 판형교의 동적 상호작용에 관한 해석적 고찰
이희업(Lee Hee-Up),엄주환(Um Ju-Hwan),구수환(Ku Su-Hwan),고동춘(Go Dong-Choon) 한국철도학회 2003 한국철도학회 학술발표대회논문집 Vol.- No.-
After the development of practical technology for tilting system, tilting trains are operated on conventional lines of KORAIL. As the running speed of trains is increased, it is very important to investigate the dynamic characteristics of plate girder bridges with direct track fixation. Therefore, this paper reviews the dynamic interactions between tilting train and welded plate girder bridges designed by L-22, a standard load type of KORAIL. The span lengths of plate girder analyzed here are 6.6m, 9.7m, 12.9m, 16.0m, 19.2m, 22.3m, 25.4m and 31.1m. Using 2-D dynamic analysis, the critical velocity of tilting train, vertical deflection ratios of plate girder and maximum accelerations of car body are calculated. And the analytical results are compared with those of design criteria.
기존선 속도향상을 위한 궤도재료 개선에 관한 기초 연구
원용환(won Yong hoan),김관형(kim kwan hyung),김순철(kim soon cheol),구수환(ku su hwan) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
The original conventional railway was designed to be stand against 150㎞/h and it is still being operated at the present. However, if the speed of train is improved up to 200㎞/h in the near future in order to get competitiveness, we examined how the speed effect on the rail and we analyzed the effect of vibration, the stress and the displacement of the rail material by the change of the speed and the change of the property of matter through the hydrostatical and the dynamic analysis about the absence of the rail. As the result of the analysis by the above method, we got the prove that the best synthetic hardness of the rail is 75±10KN/㎜. Therefore, it is proved that rail pad has to be improved.