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Title |
Analysis of Live Load Factor for Bridge Evaluation Through Reliability Based Load Factor Calibration
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Authors |
유민선(Min-Sun Yoo) ; 김경현(Kyung-Hyun Kim) ; 백인열(In-Yeol Paik) |
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DOI |
https://doi.org/10.11112/jksmi.2022.26.6.212 |
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Keywords |
한계상태설계법; 신뢰도 분석; 하중계수 캘리브레이션; 안전성 평가; 설계활하중 Limit state design method; Reliability analysis; Load factor calibration; Safety evaluation and design live load |
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Abstract |
In this paper, the evaluation procedure applying the limit state design method is studied to be consistent with the newly issued bridge designcode in Korea. The live load factor for evaluation is proposed by calibrating for the target reliability index through reliability analysis. Using the actualbridge information collected for the representative bridge types in Korea, the load effects of the design live loads for the previous and current designcodes are calculated and compared. The live load factor is calibrated through reliability analysis using the minimum required strength which equalsto the load effect obtained for the example bridge. Bridge evaluation is performed by applying the live load factors for the evaluation level as wellas design level. The load rating result is generally increased by applying the limit state design method compared to the previous design method andapplying the proposed load factor for lowered target reliability index further increased the rating result.
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