Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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A Long-Term Friction Test of Bridge Bearings Considering Running Speed of Next Generation Train

차세대 고속철 주행속도를 대비한 교량받침의 장기마찰시험법

  • 오순택 (서울과학기술대학교 건설시스템공학과) ;
  • 이동준 (서울과학기술대학교 건설시스템공학과) ;
  • 전성민 (서울과학기술대학교 건설시스템공학과) ;
  • 정신효 (서울과학기술대학교 건설시스템공학과)
  • Received : 2015.08.21
  • Accepted : 2016.02.16
  • Published : 2016.03.01
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Abstract

Structural behaviour of PSC box bridge, on which KTX train runs, is analysed up to 500 km/h speed considering 12 stages track irregularity and interaction between bridge and vehicle. To evaluate wheel forces and rotations of vehicle, lateral wheel forces, derail factor and offload factor calculated on the track combining the bridge and 170 m normal track are compared with existing allowed limits. Maximum longitudinal displacement and accumulated sliding distance of the brige bearings for simply supported and 2 span continuous PSC bridges are presented by each running speeds. Long-term friction tests based on EN-1337-2 are conducted between PTFE and DP-mate plates. Finally, the long-term friction tests are proposed to consider the increasing speed of next generation high-speed train.

경부 고속철 40 m 단경간 PSC 교량을 대상으로 38 자유도 KTX 동력차를 주행속도 500 km/h까지 12 단계 불규칙 궤도형상과 상호 작용력을 고려하여 해석하였다. 차량의 윤축하중과 중심회전각을 평가하기 위하여 170 m 일반도상을 교량과 조합하여 횡압과 탈선계수 그리고 윤중감소율을 허용기준과 비교하였다. 단순교와 연속교의 교량받침 최대 변위와 누적이동거리를 주행속도별로 해석하였다. PTFE 마찰판과 DP-mate의 EN-1337-2 기준의 장기마찰시험을 수행하였다. 수행된 장기마찰시험은 차세대 고속철의 증가되는 주행속도를 고려하여 개선 방안을 제안하였다.

Keywords

References

  1. Lee, H. J., Oh, S. T., Lee, D. J. and and Jeong, S. H. (2014), Durability Evaluation of Pre-Stressed Concrete(PSC) Bridge Bearing for High-Speed Railway, Proceedings of the 25th Annual Conference, Korea Society of Steel Construction, Busan, 169-170.
  2. Oh, S. T., and Lee, D. J. (2014a), A Dynamic Analysis of Rotations at the Center of Vehicle Running High Speed KTX Train on the PSC Box Bridges, Journal of the Korea Institute for Structural Maintenance and Inspection, 18(1), 59-67. https://doi.org/10.11112/jksmi.2014.18.1.059
  3. Oh, S. T., Lee, D. J., and Lee, J. H. (2013a), Dynamic Analysis of Wheel Forces of KTX Vehicle Running with High-Speed on the PSC Bridge, Journal of KOSHAM, 13(5), 1-7.
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  5. Oh, S. T., Lee, D. J., Yeon, J. S., Kim, Y. S. and Jeong, S. H. (2013b), Dynamic Bearing Behaviour Analysis of PSC Box Bridges for KTX, Proceedings of the 25th Annual Conference, Korea Institute for Structural Maintenance and Inspection, Yangyang, 17(2), 711-712.
  6. Oh, S. T., Lee, D. J., Yeon, J. S., Lee, H. J. and Jeong, S. H. (2013c), Dynamic Behaviours of the Two-Span Continuous PSC Box Bridge with 40m Span for KTX Vehicle, Proceedings of the 25th Annual Conference, KSR2013A032, the Korean Society for Railway, Daegu, 130-132.

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