Research Article
Behavior of Strengthened Composite Prestressed Concrete Girders under Static and Repeated Loading
Table 5
Summary of test results for girders G1 and P1.
| Test results | Girder G1 | Girder P1 | (P1/G1), % |
| Initial camber, mm | 22 | 31 | 140.9 | Total Pcr, kN | 361.6 | 425 | 117.5 | Mcr, kN·m | 1085 | 1275 | 117.5 | Δcr, mm | 32 | 42 | 131.3 | Total Py, kN | 565.3 | 711.3 | 125.8 | My, kN·m | 1696 | 2134 | 125.8 | Δy, mm | 96 | 92 | 95.6 | Curvature ɸy, 1/mm × 10−5 | 7.92 | 7.36 | 95.8 | Total Pu, kN | 656.3 | 775.3 | 118.1 | Mu, kN·m | 1969 | 2326 | 118.1 | Δu, mm | 186 | 165 | 88.7 | Residual deflection, mm | 92 | 78 | 84.8 | Curvature ɸu, 1/mm × 10−5 | 22.13 | 15.85 | 71.6 | Ductility index, Δu/Δy | 1.94 | 1.79 | 92.4 | Δ at service load level (70% of ultimate load), mm# | 36 | 32 | 88.9 |
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Total absolute measured downward net deflection, #net deflection after subtracting camber value.
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