Research Article
[Retracted] Fatigue Performance of Reinforced Concrete T-Girders under Cyclic Loading
Table 3
Summary of T-girder fatigue failure characteristics.
| | Girder identifier | Loading frequency (Hz) | Load range (kN) | Rebar stress range (MPa) | Cycles to failure (103) | Failure mode |
| | S-1 | — | — | — | — | Longitudinal rebar yielding | | S-2 | — | — | — | — | Longitudinal rebar yielding | | F-1 | 3 | 5∼35 | 305 | 384 | 3 rebars fractured, 1 major crack penetrated the cross section, and the maximum crack width was 20 mm | | F-2 | 3 | 5∼28 | 230 | 555 | 3 rebars fractured, 3 major cracks occurred and penetrated the web at 2.3∼2.4 m from the support, and the maximum crack width was 17 mm | | F-3 | 3.5 | 5∼17.5 | 126 | >900,0 | Ran out and the static ultimate failure load after 9 million cycles was 64 kN | | F-4 | 4 | 5∼17.5 | 121 | 3,401 | 3 rebars fractured, 1 major crack occurred and penetrated the web at 2.4 m from the support, and the maximum crack width was 7 mm | | F-5 | 3 | 5∼24.5 | 181 | 1,123 | 3 rebars fractured, 2 major cracks occurred and penetrated the web at 2.3 m from the support, and the maximum crack width was 2.9 mm | | F-6 | 3.5 | 5∼21 | 163 | 3,764 | 2 rebars fractured, 1 major crack occurred and penetrated the web at 2.6 m from the support, and the maximum crack width was 13 mm | | F-7 | 3 | 5∼22 | 170 | 1,697 | 3 rebars fractured, 1 major crack occurred and extended to the flange at 2.45 m from the support, and the maximum crack width was 9 mm |
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