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
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참고문헌
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초록
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.
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.
참고문헌 (16)
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