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강영종(Young-Jong Kang),김정훈(Jung-Hun Kim),신주환(Ju-Hwan Shin),이명섭(Myeong-Sup Lee) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.5
High speed railway structure, contact of vehicle needs to design considering the running stability(dynamic behavior). Also, upper structure has to satisfy design standard about moving load, high speed train(KTX). So, the high speed railway structure has to satisfy the requirement of natural frequency, vertical acceleration on deck, face distortion and vertical displacement considering ride comfort, which is suggested Ho-nam high speed railway design standard. In this study, it was investigated and evaluated to the dynamic behavior for tow plate Girder railway bridge subjected to moving load considering real high speed train loads.
실 고속열차하중을 고려한 이중 리브 아치 교량의 동적해석
강영종(Young-Jong Kang),김정훈(Jung-Hun Kim),신주환(Ju-Hwan Shin),이명섭(Myeong-Sup Lee) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7
High speed railway structure, contact of vehicle needs to design considering the running stability(dynamic behavior). Also, upper structure has to satisfy design standard about moving load, high speed train(KTX). So, the high speed railway structure has to satisfy the requirement of natural frequency, vertical acceleration on deck, face distortion and vertical displacement considering ride comfort, which is suggested Ho-nam high speed railway design standard. In this study, it was investigated and evaluated to the dynamic behavior for a double-rib arch railway bridge subjected to moving load considering real high speed train loads.
임주영(Lim Joo-Young),박해균(Park Hae-Geun),이명섭(Lee Myeong-Sub),조남섭(Cho Nam-Sup) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
From the early 1980"s, the New Austrian Tunnelling Method (NATM) has been developed as a one of the standard tunneling method in Korea. Owing to the results of many researches, the practical problems of shotcrete has been improved for a last decade. However, the excess amount of rebound still remains one of the critical problems in shotcrete technology. In order to improve for this rebound problem, recently developed cement mineral accelerator has been successfully applied to several NATM tunnels in Korea. An experimental investigation was carried out in order to verify the rebound characteristics of wet-mix Steel Fiber Reinforced Shotcrete (SFRS) with powder types cement mineral accelerator. Mortar setting test, SEM analysis, bonding test under spring water condition and rebound test were conducted. From the result, wet-mix SFRS with cement mineral acelerator exhibited excellent bonding characteristics even spring water condition and less rebound ratio compared to the conventional liquid accelerator.