Steel and Composite Structures

  • 제41권2호
  • /
  • Pages.209-222
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  • 2021
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  • 1229-9367(pISSN)
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  • 1598-6233(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Effects of vertical stiffness of rail fastening system on the behavior of the end regions of railway bridges with slab tracks

  • Sung, Deokyong (Department of Civil & Railroad Engineering, Daewon University College) ;
  • Pyo, Sukhoon (Department of Urban & Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST)) ;
  • Chang, Seongkyu (Department of Civil Engineering, Gwangju University)
  • 투고 : 2019.12.29
  • 심사 : 2021.09.23
  • 발행 : 2021.10.25
⟨ 이전 논문 다음 논문 ⟩

초록

A railway bridge with slab track is subjected to end rotations because of the deflection of the girder during train operation. At the ends of a slab track, the end rotation of the bridge girder causes uplift deformation of the slab track, and leads to compressive stresses in the rail fasteners. In this study, a prototype bridge consisting of one span of a girder and one span of an abutment along with a slab track was constructed, and the uplift and compressive forces generated in the rail fastening system were experimentally analyzed. To effectively analyze the experimental results using a numerical method, a series of finite element analyses were performed considering the nonlinear nature of the rail fastening system. A comparison between the experimental and analytical results indicated that the higher the stiffness of the rail fastening system, the greater the uplift and compressive forces. In addition, a nonlinear model provided better correlation with the experimental results than a linear model. Therefore, when reviewing the serviceability of the rail fastening system at railway bridge ends, an adequate finite element model considering the uplift and compressive forces in the rail fastening system should be used.

키워드

과제정보

This research was supported by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant 21CTAP-C152046-03 and 21CTAP-C163958-01) and by research funds from Gwangju University in 2021. The opinions expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors.

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