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홍철기(Hong Chul Kee),양신추(Yang Shin Chu),김연태(Kim Youn Tae) 한국철도학회 2004 한국철도학회 학술발표대회논문집 Vol.- No.-
In general, the national rail system put an emphasis on distribution planing of stations for smooth operation of transporting goods, train allocation, parking, and maintenance. Since the national rail system is operated on the ground level, it is feasible to improve various aspects of the system during its operation. On the contrary, urban rail system is operated in the limited space under the ground, and thus, improving various aspects of the system during its operation is infeasible. Specifically, the urban subway system must have a comprehensive track distribution plan because the urban subway system has to operate in a limited environment such as it operates in a much shorter time period, The subway system has to be ready for various operations and events such as trains returning in the opposite direction, parking trains that need repair, parking during night time, storing various maintenance equipments, and connections to other tracks. Furthermore, considering the future extension of tracks, a comprehensive track distribution plan is a must.
도시철도 터널내 흡음재 시험설치 및 소음저감효과 분석에 관한 연구
홍철기(Hong Chul-kee),정이택(Jeong Ri-taek),김병홍(Kim Byeong-hong) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
This research tries to analyze and investigate the effects of the noise reduction test for the sound-absorbing materials installed tentatively on Metro Line 5. Though the noise reduction effects of each sound-absorbing material showed that there was about 2~5 ㏈ compared with before and after of the tentative installation, it shows that the noise reduction effects are reducing because of the section change condition such as dust absorption and the rail abrasion as time passes after the tentative installation. Also, many difficulties are occurring in the maintenance of the orbit facilities because of the installation of sound-absorbing materials. Though various abroad products for noise reduction are imported like this, the researches for the noise reduction effect increase for this and the improvement direction are being required because of the poor circumstance of the efficiency aspect compared to the economic investment effect because those are not suited to the character of domestic Metro.
토노반상 콘크리트슬라브 궤도의 노반침하시 슬라브궤도/차량 상호동적해석
홍철기(Hong Chul-Kee),양신추(Yang Shin-Chu),김연태(Kim Youn-Tae) 한국철도학회 2007 한국철도학회 학술발표대회논문집 Vol.- No.-
Recently the concrete slab tracks are being constructed on roadbed in the Kyong-bu 2nd stage high speed railways. In responding to this trend, new design standards and track materials maintenance systems, based on the slab track material safety and usage perspective, are needed. This research provides the design standards and the maintenance system. The proposed standards and the maintenance system are based on the track theory and the track-train interaction program developed, where the roadbed displacement and train speed are utilized as mediating variables. In the analysis, the dynamic response of track-train interaction apply to various speeds and displacements. the roadbed displacement is shown in a sine curve, the scope of the displacement occurrence, presented in its wavelenths, include 6meters, 10meters, 15meters, 20meters, 30meters. the train speeds involved are 50,100, 150,200,250,300,350,400 kilometers per hour.
박영곤(Young-Kon Park),윤희택(Hee-Taek Yoon),엄기영(Ki-Young Eum),홍철기(Chul-Kee Hong) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.11
고속철도의 속도향상 노력은 유럽과 일본 등 철도선진국은 물론 후발주자인 한국과 중국에 이르기까지 모두 경쟁적으로 하고 있다. 이에 각 국은 차량뿐만이 아니라 인프라, 특히 궤도구조물의 고속에 대한 안정적인 서비스 지원을 위해 선형, 궤도, 토공, 교량, 터널 등에 대한 안정성을 전반적으로 점검하고 이의 성능을 지속적으로 보완하고 있다. 2010년도부터 시작된 400km/h급 고속철도 인프라 연구에서는 현재 구축중인 호남고속철도 일부 구간을 테스트베드로 지정하고, 증속에 따른 핵심설계인자를 선정하여 현장 센서 매설과 함께 궤도구조물의 안정성을 검토하고 있다. 따라서 본 연구에서는 현재 진행중인 핵심설계인자를 포함하여 국내외적으로 운영되고 있는 고속철도의 속도향상을 위해 필요한 궤도구조물의 추가적인 핵심설계인자를 도출하였고, 400km/h 이상의 열차속도에 따른 궤도구조물의 기술연구항목을 종합적으로 검토하였다. Korea efforts to improve the speed of high-speed rail like China, Europe and Japan. For each country, as well as infrastructure such vehicles, especially the track structures like track, roadbed, bridge, tunnel have been checked to support reliable service for high-speed driving of railroad vehicle. In research on 400km/h high-speed railroad infrastructure started after 2010, we are building a test-bed for some sections of Honam high-speed railroad, and we have examined key design factors in track structures with increased speed. In this study, the additional key design parameters in order to improve the speed of railroad including domestic and international high-speed railroad in operation, are derived and research topics of track structures for 400km/h or more are comprehensively investigated.