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Title |
Concrete Median Barrier Performance Improvement using Stiffness and Flexibility Reinforcement
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Authors |
김찬희(Chan-Hee Kim) ; 김우석(Woo Seok Kim) ; 이일근(Ilkeun Lee) ; 이재하(Jaeha Lee) |
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DOI |
https://doi.org/10.11112/jksmi.2018.22.1.023 |
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Keywords |
콘크리트 ; 중앙분리대 ; 충돌 ; 유한 요소 Concrete ; Median barrier ; Collision ; FEM |
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Abstract |
Recently, there was an collision accident of vehicle-concrete median barrier and unfortunately, passengers were killed by exceeded capacity of concrete median. Therefore, improving the capacity of concrete median barrier is need to reduce damage. Accordingly, in this study, appropriate collision model verified by using the FE analysis program LS-Dyna and recommend a concrete median barrier section. The improvement parameters such as wire mesh diameter, steel plate, rubber pad were selected for improved capacity of the median barrier. Finally, section of concrete median barrier improved wire mesh diameter decreased volume loss, section of concrete median barrier improved rubber pad accepted impact loading and increased elastic area.
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