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http://dx.doi.org/10.11112/jksmi.2015.19.3.064

Highway Bridge Inspection Period Based on Risk Assessment  

Lee, Il-Keun (한국도로공사 도로교통연구원)
Kim, Dong-Hyawn (군산대학교 사회환경디자인공학부)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.3, 2015 , pp. 64-72 More about this Journal
Abstract
Risk Based Inspection (RBI) Period was proposed for highway bridges in Korea. Hazard factors affecting bridge condition deterioration were found by analyzing condition data from Highway Bridge Management System (HBMS). Certain level of correlations between those factors and condition deterioration were found. They are used to evaluate hazard score. Summarizing several hazard factors, final hazard is classified as three level;high, moderate, low. Vulnerability is assessed only by the current state of bridge. Then, risk matrix is suggested for inspection periods. Inspection periods of the bridges with grade C, D, and E are maintained the same as before. But, those of grade A and B with moderate and high hazard score are elongated to maximum 6 years while the maximum inspection period is three years at present. By adjusting inspection period according to risk assessment, it was shown that 27% of average inspection manpower can be saved.
Keywords
RBI; Inspection period; Highway bridge; Risk; Deterioration; Exposure environment; State rating;
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