- Volume 28 Issue 6
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Analysis of Design Live Load of Railway Bridge Through Statistical Analysis of WIM Data for High-speed Rail
고속철도 WIM 데이터에 대한 통계분석을 통한 철도교량 설계활하중 분석
Park, Sumin;Yeo, Inho;Paik, Inyeol
- Received : 2015.10.11
- Accepted : 2015.11.02
- Published : 2015.12.29
In this paper, the live load model for the design of high-speed railway bridge is analyzed by statistic and probabilistic methods and the safety level that is given by the load factors of the load combination is analyzed. This study is a part of the development of the limit state design method for the railway bridge, and the train data collected from the Gyeongbu high-speed railway for about one month are utilized. The four different statistical methods are applied to estimate the design load to match the bridge design life and the results are compared. In order to examine the safety level that the design load combination of the railway bridge gives, the reliability indexes are determined and the results are analyzed. The load effect from the current design live load for the high-speed rail bridge which is 0.75 times of the standard train load is came out greater than at least 30-22% that from the estimated load from the measured data. If it is judged based on the ultimate limit state, there is a possibility of additional reduction of the safety factors through the reliability analysis.
high-speed railway bridge;train live load;statistical estimation;reliability index;limit state design methods;load and resistance factor
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Supported by : 국토교통부