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Strengthening of Concrete Structures Using Fiber Reinforced Polymers (FRP) by Christopher D Eamon, Hwai-Chung Wu

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Figure 9.4 FRP reinforcement scheme.

A two-sided (noncontinuous) configuration is used without an anchorage system. The FRP sheets will be applied at 90 degrees with respect to the longitudinal axis of the girder. Note that the following calculation to determine FRP shear resistance for the two-sided scheme is identical for a U-wrap scheme.

Assume one layer of FRP is sufficient, nf=1

Width of FRP sheets, Wf=8 in.

Center-to-center spacing of FRP sheets, Sf=12 in.

Orientation of FRP sheets, αf=90 degrees

Effective depth of FRP sheets, df=dphf: df=57.62−9=48.62 in.

Check if the selected spacing (12 in.) is acceptable. Shear stress in concrete is ...

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