비 부착형 침목방진패드 적용에 따른 자갈궤도의 궤도지지강성 평가 = Evaluation of Track Support Stiffness of Ballasted track according to applying De-Bonded Type of Under Sleeper Pad

국문 초록 (Abstract)

본 연구에서는 고속화에 적합한 자갈궤도(Ballasted track)의 궤도지지강성을 확보할 수 있는 D-USP를 개발하였다. 또한, D-USP가 설치된 자갈궤도의 궤도지지강성(track support stiffness)을 정, 동적 및 피로(static, dynamic and fatigue)측면에서 분석하였다. 연구결과, D-USP 설치에 따라 자갈궤도의 궤도지지강성을 고속화에 적합한 수준으로 저감시킬 수 있음을 실험적으로 입증하였다. 또한 설계(design) 및 유지관리(maintenance)에 활용이 가능한 D-USP가 적용된 자갈궤도의 적정 침목간격(optimum sleeper spacing)과 궤도지지강성 평가기법을 제시하였다.

다국어 초록 (Multilingual Abstract)

In this study, we have developed D-USP to secure the track support stiffness of ballasted track which is suitable for speed-up of conventional railways. And the track support stiffness of ballasted track with D-USP was analyzed by laboratory test with the full-scaled specimen. As a result, the track support stiffness of ballasted track was proved experimentally and it could be reduced to proper level for speed-up by applying D-USP. In addition, we have suggested the evaluation method of the track support stiffness and optimum sleeper spacing of ballasted track with the D-USP could be utilized for the design and maintenance.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 이론적 배경
• 3. D-USP 시스템의 설계
• 4. 실내시험
• 5. 분석 및 고찰
• 6. 결론
• 참고문헌

참고문헌 (Reference)

1 이광도, "철도교량 단부 전환부 궤도시스템의 구조적 거동특성 및 장기 내구성능 분석" 한국철도학회 17 (17): 260-269, 2014

2 김만철, "자갈도상 궤도 구성품에 따른 궤도 침하 특성에 대한 실험적 연구" 한국철도학회 19 (19): 498-505, 2016

3 최정열, "자갈궤도용 침목방진패드의 수직 스프링강성시험기법에 관한 실험적 연구" 한국안전학회 31 (31): 82-88, 2016

4 KORAIL, "Vibration absorber(low vibration track type)"

5 Indraratna, B., "Use of Shock Mats for Mitigating Degradation of Railroad Ballast" 6 (6): 32-41, 2014

6 UIC Project, "Under Sleeper Pads, Summarizing Report" UIC 2009

7 Park, S. W., "The Influence of Track Support Stiffness on the Void Sleeper of Ballasted Track" Seoul National University of Science and Technology 2016

8 Lee, S. Y., "The Evaluation of Behavior Characteristics of Ballasted track According to Variation of Track Components Combination for Speed-up of Conventional Lines" Seoul National University of Science and Technology 2015

9 Lee, S. Y., "The Evaluation of Behavior Characteristics of Ballasted track According to Variation of Track Components Combination for Speed-up of Conventional Lines" Seoul National University of Science and Technology 2016

10 V.A. Profillidis, "Railway Engineering" 101-, 2000

11 Choi, J. Y., "Qualitative Analysis for Dynamic Behavior of Railway Ballasted track" Technische Universität Berlin 2014

12 Teixeira, P. F., "Optimization of High-speed Ballasted Tracks: the Interest of Using a Bituminous Sub-allast Layer, The National Academies of Sciences, Engineering, and Medicine" 1-13, 2006

13 Wettschureck, R. G., "Long-term Properties of Sylomer Ballast Mats Installed in the Rapid Transit Railway Tunnel Near the Philharmonic Hall of Munich" Rail Engineering International Edition 6-11, 2002

14 Korea rail network authority, "KR CODE C-14030, Korea"

15 Lopez-Pita, A., "High Speed and Track Deterioration:The Role of Vertical Stiffness of the Track" Institution of Mechanical Engineers 218 : 31-40, 2004

16 Dimitre L. I., "Die horizontale Gleislagestabilität des Schotteroberbaus mit konventionellen und elastisch besohlten Schwellen" Technischen Universität München 2011