[CS2-42] ANALYTICAL STUDY ON PERMANENT REPAIR OF FATIGUE CRACKS OF WELDED GUSSET JOINTS BY EXTERNALLY BONDED CARBON FIBER SHEETS
Keywords:Permanent repair of fatigue crack, Welded gusset joint, Threshold SIF, CF sheet, VaRTM technique
This paper deals with the analytical study and design of the number of layers of CF sheets required for permanent repair of fatigue crack of typical welded gusset joints in steel bridges by externally bonded CF sheets using VaRTM technique. Based on the analytical study under designed condition, number of layers of CF sheets required for permanent repair of fatigue crack of welded gusset joints are proposed and number of CF sheet layer is between 25 and 51 layers under applied nominal stress range of 60~100 MPa.
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