Table 2 Spring parameters for interface and FRP anchor modeling.
Epoxy–concrete interface (127-mm wide FRP sheet) | Epoxy–concrete interface (254-mm wide FRP sheet) | Small FRP anchors d a = 13 mm, d s = 51 mm | Large FRP anchors d a = 19 mm, d s = 102 mm | |
|---|---|---|---|---|
F peak (kN) | 0.53 | 1.1 | 17.8 | 22.7 |
F res (kN) | 0.05 | 0.11 | – | – |
δ peak (mm) | 0.045 | 0.045 | – | – |
δ res (mm) | 0.2 | 0.2 | – | – |
δ yo (mm) | – | – | 0.18 | 0.25 |
δ y1 (mm) | – | – | 0.51 | 0.64 |
δ max (mm) | 1.78 | 1.78 | 1.78 | 1.78 |