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Establishment of Guardrail Distance for Safety of Reinforced Earth Retaining Wall by Vehide Collision  

Park, Kwon (Hwahshin Engineering)
Hong, Ki-Nam (Department of Civil Engineering, Chungbuk National University)
Ahn, Kwang-Kuk (Department of Civil Engineering, Chungbuk National University)
Publication Information
Journal of the Korean Society of Safety / v.24, no.5, 2009 , pp. 57-62 More about this Journal
Abstract
In this study, the numerical analyses regarding the distance between the guardrail and the reinforced earth wall as parameter were performed to determine the safe distance of guardrail installed on reinforced earth wall from the reinforced earth wall. The analyses were fulfilled by increasing the distance between the guardrail and reinforced earth wall from 150mm to 750mm. The computer program used in this research is LS-DYNA, which is very' popular in analysis of vehicle collision. Ford single unit truck in NCAC was employed as the model of vehicle and the velocity of vehicle collision was 80km/hr. As a results of analyses, the safety of guardrail was secured regardless of the distance between the guardrail and block of reinforced earth wall. However, to secure the safety of block of reinforced earth wall the distance between the guardrail and block of reinforced earth wall should be over 600mm.
Keywords
guardrail; reinforced earth wall; LS-DYNA; vehicle collision; numerical analyses;
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