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서울메트로 3호선 신형전동차 구조체 강도해석 시험 평가
추돈호(Choo Don-Ho),김용민(Kim Yong-Min),구병춘(Goo Byeong-Choon),구정서(Koo Jeong-Seo) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
Despite of the substantial improvement in train safety due to the use of new materials and advancement of manufacturing technology, social cost for replacement of the expired EMUs was immense to meet the laws and regulations for lifetime of EMU. Henceforth, newly built EMU structures should meet 30-45 years lifetime in accordance with revision of the laws and regulations for lifetime of EMU. Therefore, strength analysis and evaluate load test should be performed strictly from the designing and manufacturing stages. In this study, the structural safety of the new model EMU for Seoul metro line 3 was evaluated according to the related laws and regulations by performing safety evaluation with loading tests and structure analysis by I-DEAS Master Series 12.0, a finite element analysis program.
이승우(Lee Seoung-Woo),김재철(Kim Jae-Chul),이동훈(Lee Dong-Hoon),추돈호(Choo Don-Ho) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
As the improvements of service quality is becoming an important issue the, interior noise level of a train is an important factor of comfortable ride. To reduce the interior noise level, noise sources of the train need to be removed. However, in case with a structure of large scale and multiple noise sources, an estimation of influences of major noise sources, with indentification of its traveling paths needs to be performed. In current state, to improve the interior noise reduction, consideration of sound transmission loss of the train body prior to manufacturing is usually performed. In this study, the sound transmission loss of the train body of new model train of seoul metro"s line no.2 under test opeation is measured and modeling of the train body is performed. And train interior noise is predicted using the measured values.
최시행(Choi Si-Haeng),양회성(Yang Hoe-Sung),추돈호(Choo don-ho),차관봉(Cha gwan-bong) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.5월
In case of high-levelled platform in the urban railway system, a certain width of gap is inevitably formed between the train and the platform, and the gap gets wider when it is concerned with curved portion of the tracks at platform. This gap greatly contributes to decrease of passengers' safety while boarding and alighting a train. In particular, it endangers children's safety. Gap filler system is often fitted out to minimize gap and to overcome this safety problem at platform. However, as existing gap fillers are in most case structurally complex and organized to be powered from separate supply unit, there are a range of non-favorable points from the viewpoint of cost, installation and maintenance. In addition, existing gap fillers are due to cause disruptions in operation of train, with failures such as malfunctioning of control system. In this study, the authors will review on the gap filler applicable to the platforms of various height types, which neither requires any modifications of the train nor causes any operational disruptions. The proposed gap filler system here is a by-stage retractile type and based on the idea of interlocking it with train doors open-close mechanism, without any additional power supply unit or control system.