Abstract
AbstractThis paper provides a framework for the calibration of partial safety factors in prestressed concrete (PC) girders strengthened in flexure with carbon fiber–reinforced polymer (CFRP) lamina...
Highlights
Many reinforced concrete (RC) bridges built in the last decades using precast prestressed concrete (PC) girders are currently in need of retrofit or upgrade due to degradation and increasing traffic
The reliability values based on the former standard are significantly higher than the ones obtained with the latter code, and in some cases this difference can reach more than 200% – e.g
This paper proposed a new hybrid procedure to perform reliability analyses efficiently combining analytical and advanced non-linear FEM models to overcome the simplifications normally assumed in reliability studies
Summary
Many reinforced concrete (RC) bridges built in the last decades using precast prestressed concrete (PC) girders are currently in need of retrofit or upgrade due to degradation and increasing traffic. As interventions are progressively undertaken, the use of externally bonded fibre-reinforced polymer (EB FRP) laminates is a competitive technique when compared with other options (e.g., concrete jacketing or epoxy-bonded steel plates). This is due to the low weight and thickness of FRP laminates, easy application, high stiffness and strength, corrosion protection and reasonable costs (CEB-FIB 2001). There are currently several guidelines applicable to EB FRP laminates, such as the CEB-FIB (2001), ACI 440.2R-08 (2008), CNR (2001), TR-55 (2000), and the AS 5100.8 (2017).
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