400 km/h급 전차선로 곡선당김금구 개발

초록

In order to develop a overhead catenary system for the maximum speed of 400 km/h on Honam high-speedline, increasing tension of contact wire, changing dropper distributions, reducing a hard point and etc. should beconsidered. And it is also essential to develop core components taking account of the increased tension. Therefore wedeveloped a new steady arm for the max. speed of 400 km/h in this study. FEM (Finite Elements Method) analysis wasperformed to ensure the strength of the arm. An oval shape was applied to the arm, so that 25 % of strength wasincreased and 9 % of weight was decreased. And a type test according to the code KRSA-3012 was performed toensure the performance. Fatigue test in KRRI (Korea Railroad Research Institute)’s test-bed was also performed toevaluate its performance. Some section of the Honam High-speed line was constructed with the developed steady arm.

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