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A Parametric Study on the Serviceability of Concrete Slab Track on Railway Bridges  

Park, Hong-Kee (서울산업대학교 철도전문대학원 철도건설공학과, (주)신성엔지니어링)
Jang, Seung-Yup (한국철도기술연구원 차륜궤도연구실)
Yang, Sin-Chu (한국철도기술연구원 차륜궤도연구실)
Park, Yong-Gul (서울산업대학교 철도전문대학원 철도건설공학과)
Publication Information
Journal of the Korean Society for Railway / v.12, no.1, 2009 , pp. 95-103 More about this Journal
Abstract
Deformations of bridge deck ends on abutments and piers bring about severe problems in track geometry and require maintenance work. In case of concrete slab track, more severe deformation and additional forces on rail and rail supports can be induced by bridge deck deformation, which affect the serviceability of track structure since concrete slab track is much stiffer than ballasted track and the behavior of track structure is integrated with that of bridge deck. In this study, the design variables affecting the serviceability of track structure are selected and the influence level is estimated by a parametric study. As a result, it is found that continuous span is advantageous than simply supported span and the stiffness of bridge bearing and rail fastener as well as the distance between last rail support and bridge bearing are most important parameters.
Keywords
Serviceability of slab track; Bridge deck ends; Forces on rail support; Uplift forces;
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