How to Use BWIM Data in Fatigue Evaluation of a Medium-span Steel Bridge

초록

For fatigue evaluation of in-service steel bridges, the repetitive stress range and the number of stress cycles can be estimated using field-measured data. The bridge weigh-in-motion (BWIM) with the structural analysis model is widely used for the fatigue evaluation of bridges. The actual loading parameters included in BWIM data should be appropriately integrated for accurate fatigue life evaluation. This study conducted parametric studies on fatigue evaluation to identify the relative influences of three representative loading parameters in BWIM data: multi-truck effect, driving lane, and axle load configuration. In addition, the relative significance of each parameter for realistic fatigue evaluation of the examined bridge was discussed by comparing the fatigue evaluation results using strain data measured simultaneously with the BWIM.

키워드