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Title |
Dynamic Behavior Analysis of PSC Train Bridge Friction Bearings for Considering Next-generation High-speed Train
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Authors |
오순택(Soon-Taek Oh) ; 이성태(Seong-Tae Yi) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.6.39 |
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Keywords |
단경간과 2경간 연속 PSC 박스교; 횡변위; 누적 이동거리와 변위속도; 장기마찰시험 Single span and two-span continuous PSC box bridge; Longitudinal displacement; Cumulative sliding distance and displacement speed; Long-term friction test |
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Abstract |
In this study, the dynamic behavior of friction bearings of PSC (Pre-Stressed Concrete) box train continuous bridge was numerically analyzed at 10 km/h intervals up to 600 km/h according to the increasing speed of the next-generation high-speed train. A frame model was generated targeting the 40-meter single-span and two-span continuous PSC box bridges in the Gyeongbu High-Speed Railway section. The interaction forces including the inertial mass vehicle model with 38 degrees of freedom and the irregularities of the bridge and track were considered. It was calculated the longitudinal displacement, cumulative sliding distance and displacement speed of the bridge bearings at each running speed so that compared with the dynamic behavior trend analysis of the bridge. In addition, long-term friction test standards were applied to evaluate the durability of friction plates.
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