열차하중 재하시 교량상slab궤도의 상향력 민감도분석

• 영문명: Parametric Analysis for Up-lifting force on Slab track of Bridge under Train Load
• 발행기관: 한국방재학회
• 저자명: 최성기 박대근 한상윤 강영종 Choi, Sung-Ki Park, Dae-Geun Han, Sang-Yun Kang, Young-Jong
• 간행물 정보: 『3. 한국방재학회 학술대회논문집』2008년, 279~282쪽, 전체 4쪽
• 주제분류: 공학 > 기타공학
• 파일형태: PDF
• 발행일자: 2008.02.28

영문 초록

The vertical forces in rail fasteners at areas of bridge transitions near the embankment and on the pier will occur due to different deformations of adjoining bridges caused by the trainloads. The up-lifting forces is not large problem in the blast track because the elasticity of blast and rail pad buffs up-lifting effect. But, it is likely to be difficult to ensure the serviceability of the railway and the safety of the fastener in the end in that concrete slab track consist of rail, fastener, and track in a single body, delivering directly the up-lifting force to the fastener if the deck is bended because of the end rotation of the overhang due to the vertical load. When the up-lifting force exceeds the clamp force of the fastener clip, the rail pad is out of fastener, which makes decrease the serviceability of the railway, such as noise and vibration. Furthermore, it is possible to reduce the safety of the track as the longitudinal resistance. This study is focused on guideline suggestion to decrease up-lifting force in the fastener adjacent to the civil joint of slab track of bridge throughout the parametric analysis between the vertical spring stiffness of the fastener as the material approach, the space of fastener adjacent to bridge transition, the rigidity of the girder as the geometrical approach and up-lifting force under the train load.

키워드

Train load Bridge transition Up-lifting force Slab track Parametric analysis