A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Reliability of New Shear Design Equations for FRP‐strengthened Concrete Bridge Girders
Addressing the problem of aging and deficient bridges by complete replacement is cost‐prohibitive in most cases. Therefore, the strengthening alternative has become a regular activity, which in recent years has started relying on non‐traditional civil engineering materials such as fiber‐reinforced polymers (FRP). Reliability‐based calibration efforts for flexural design provision exist in the literature; however, similar efforts for shear strengthening using composites are lacking. This chapter presents the reliability calibration effort for shear design expressions developed as part of the National Cooperative Highway Research Program (NCHRP) project. A parametric study covering different span lengths, deficiency levels and anchor configurations was conducted. Results revealed that the proposed equations for FRP‐strengthened concrete girders yield acceptable reliability levels. In shear strengthening applications, externally bonded FRP composites increase shear resistance by serving as additional tension forces that can bridge the cracks consistent with shear loading.
Reliability of New Shear Design Equations for FRP‐strengthened Concrete Bridge Girders
Addressing the problem of aging and deficient bridges by complete replacement is cost‐prohibitive in most cases. Therefore, the strengthening alternative has become a regular activity, which in recent years has started relying on non‐traditional civil engineering materials such as fiber‐reinforced polymers (FRP). Reliability‐based calibration efforts for flexural design provision exist in the literature; however, similar efforts for shear strengthening using composites are lacking. This chapter presents the reliability calibration effort for shear design expressions developed as part of the National Cooperative Highway Research Program (NCHRP) project. A parametric study covering different span lengths, deficiency levels and anchor configurations was conducted. Results revealed that the proposed equations for FRP‐strengthened concrete girders yield acceptable reliability levels. In shear strengthening applications, externally bonded FRP composites increase shear resistance by serving as additional tension forces that can bridge the cracks consistent with shear loading.
Reliability of New Shear Design Equations for FRP‐strengthened Concrete Bridge Girders
Torrenti, Jean‐Michel (editor) / La Torre, Francesca (editor)
Materials and Infrastructures 1 ; 101-114
2016-06-30
14 pages
Article/Chapter (Book)
Electronic Resource
English
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