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Flexural Reliability Assessment of PSC-I Girder Rail Bridge Under Operation
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 Title & Authors
Flexural Reliability Assessment of PSC-I Girder Rail Bridge Under Operation
Kim, Ki Hyun; Yeo, Inho; Sim, Hyoung-Bo;
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It is necessary to determine reliability indexes of existing railway bridges prior to setting up a proper target reliability index that can be used to introduce a reliability based limit state design method to design practice. Reliability is evaluated for a six PSC-I girder railway bridge, which is one of many representative types of double-track railway bridges. The reliability assessment is carried out for an edge girder subjected to bending moment. In the assessment, the flexural resistance and the fixed-load effect were obtained using existing statistical values from previous research on the introduction of limit state design to road bridge design. On the other hand, the live-load effect was determined using statistical values obtained from field measurement for the Joong-ang corridor, on which heavy freight trains are frequently passing. The reliability assessment is performed by AFOSM(Advanced First Order Second Moment method) for the limit state equation, and a sensitivity analysis for the reliability is performed for each factor of the load and resistance effects.
Limit state design method;Reliability analysis;Railway bridge;Field measurement;
 Cited by
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