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Title |
Quantitative Fire Risk Assessment and Counter Plans Based on FDS and GIS for National Road Bridges
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Authors |
안호준(Ho June Ann) ; 박철우(Cheol Woo Park) ; 김용재(Yong Jae Kim) ; 장영익(Young Ik Jang) ; 공정식(Jung Sik Kong) |
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DOI |
https://doi.org/10.11112/jksmi.2017.21.6.185 |
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Keywords |
교량화재 ; 위험도 평가 ; 지리정보시스템 ; 대응방안 ; 전산유체역학 Bridge fire ; Risk assessment ; GIS ; Counter Plan ; Computational fluid mechenics |
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Abstract |
In recent years, unexpected bridge fire accidents have increased because of augmenting the number of traffic volumes and hazardous materials by the increment in traffics and distribution business. Furthermore, in accordance with the effort of using the under space of bridges, the ratio of occupied by combustible materials like oil tanker or lorry has been increased. As a result, the occurrence of bridge fire has been growing drastically. In order to mitigate the accident of bridge fire, risk assessment of bridge fire has been studied, however, practical risk models considering safety from users' viewpoints were scarce. This study represented quantitative risk assessment model applicable to national road bridges in Korea. The primary factors with significant impacts on bridge fire accidents was chosen such as clearance height, materials of bridges, arrival time of fire truck and fire intensity. The selected factors were used for Fire Dynamics Simulation (FDS) and the peak temperature calculated by FDS in accordance with the fire duration and fire intensity. The risk assessment model in bridge fire reflected the FDS analysis results, the fire damage criteria, and the grade of fire truck arrival time was established. Response plans for bridge fire accidents according to the risk assessment output has been discussed. Lastly, distances between bridges and fire stations were calculated by GIS network analysis. Based on the suggested assessment model and methodology, sample bridges were selected and graded for the risk assessment.
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