Title:
Analytical Modeling of Reinforced Concrete Beams Strengthened with Mechanically Fastened Fiber-reinforced Polymers (MF-FRP)
Author(s):
Gordon Salisbury and Vicki Brown
Publication:
Symposium Paper
Volume:
304
Issue:
Appears on pages(s):
65-84
Keywords:
beam; concrete expansion anchors; deflection; mechanically fastened fiber-reinforced polymer (MF-FRP); strain
DOI:
10.14359/51688555
Date:
10/27/2015
Abstract:
This paper presents a detailed investigation into the load-deformation response of reinforced concrete beams strengthened with mechanically fastened fiber-reinforced polymers (MF-FRP). A bearing-slip model was developed for MF-FRP connections fastened with concrete expansion anchors. The model was used to predict the interfacial change in strain between the concrete and the FRP. When combined with load deformation constitutive equations, the bearing-slip model better predicted the load-deformation behavior in MF-FRP strengthened concrete beams. Comparisons to experimental data showed that the developed method reasonably predicts (typically within 8%) actual beam response at ultimate load. Moment-curvature diagrams were also developed and used to predict midspan deflection, typically within 30% of experimental results.