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Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
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  • Korea Citation Index (KCI)

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Title A Long-Term Friction Test of Bridge Bearings Considering Running Speed of Next Generation Train
Authors 오순택 ; 이동준 ; 전성민 ; 정신효
DOI http://dx.doi.org/10.11112/jksmi.2016.20.2.034
Page pp.34-39
ISSN 2234-6937
Keywords 고속철 PSC 교량받침 ; 누적이동거리 ; 장기마찰시험 Bridge bearing of high speed train ; Accumulated sliding distance ; Long-term friction test
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.