Research Article
Test and Numerical Analysis on Damaged Steel Beam Strengthened with Prestressed CFRP Sheet
| Specimen number | Prestressed degree (%Pu) | Damaged level (%) | Type of CFRP | Yield load of bottom flange Pt (kN)/(%Pu) | Yield load of top flange Py (kN)/(%Pu) | Ultimate load Pu (kN) | Failure modes (CFRP sheet) |
| SB0 | 0 | 50 | Not strengthened | 41/(30) | 95/(69.5) | 136.6 | ā | CFSB1 | 13 | 50 | Prestressed CFRP sheet | 53.1/(33.2) | 112.2/(70.1) | 160 | Some part debonding and rupture | CFSB2 | 0 | 50 | CFRP sheet | 53.9/(34.1) | 104.5/(66.1) | 158.2 | Rupture | CFSB3 | 13 | 100 | Prestressed CFRP sheet | 36.2/(35.8) | 71.2/(70.6) | 100.8 | Some part debonding |
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