Abstract
This paper shows a case of the existing prestressed concrete bridge girders, which due to an increase in the service load needed flexural and shear upgrading with prestressed CFRP laminates. A flexural strengthening of the bridge girders with two pre-tensioned CFRP laminates was published and it is not discussed in this paper. An analysis of the design shear resistance of the original bridge girders performed based on the Polish code and Eurocode indicated the lower shear strength than the design shear force for increased service load. Based on this analysis the girders were strengthened in shear with CFRP sheets wrapping. The mechanical model by Mari et al. (2016) considering the concrete shear contribution and the flange effect on the shear strength indicated promising results. According to the model the design shear resistance of the original girder was in fact much higher than the maximum expected shear force.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
