Research Article
Influence of the Force Arm on the Flexural Performance of Prestressed Glulam Beams
Table 2
Ultimate load, deflection, and failure mode of test beams.
| | Group | Beam no. | Ultimate load (kN) | Deflection (mm) | Failure mode | | Test value | Average value | Test value | Average value |
| | SPF-1.1 | SPF-1.1 (1) | 22.40 | 22.59 | 57.57 | 58.34 | Tension failure of steel bar | | SPF-1.1 (2) | 20.99 | 59.11 | Tension failure of the lowermost laminate | | SPF-1.1 (3) | 24.39 | 111.55 | Breakage of the lowermost laminate |
| | SPF-1.2 | SPF-1.2 (1) | — | 24.12 | — | 81.07 | — | | SPF-1.2 (2) | 23.16 | 75.84 | Tension failure of the beam bottom | | SPF-1.2 (3) | 25.08 | 86.29 | Tension failure of the beam bottom |
| | SPF-1.3 | SPF-1.3 (1) | — | 26.48 | — | 101.28 | — | | SPF-1.3 (2) | 27.37 | 99.43 | Compression failure of the beam top | | SPF-1.3 (3) | 25.59 | 103.12 | Ductile tension failure of the beam bottom |
| | SPF-2.2 | SPF-2.2 (1) | 23.03 | 25.15 | 88.46 | 85.40 | — | | SPF-2.2 (2) | 25.08 | 83.79 | Tension failure of the beam bottom | | SPF-2.2 (3) | 27.33 | 83.96 | Tension failure of the beam bottom |
| | SPF-3.2 | SPF-3.2 (1) | 26.58 | 26.08 | 76.27 | 83.23 | Tension failure of the beam bottom due to the beam-end breakage | | SPF-3.2 (2) | 25.83 | 105.21 | Tension failure of the beam bottom due to the beam-end breakage | | SPF-3.2 (3) | 25.83 | 68.22 | Tension failure of the beam bottom due to the beam-end breakage |
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