Research Article
Performance of Special-Shaped Concrete-Filled Square Steel Tube Column under Axial Compression
| Specimen | Steel grade | H (mm) | D (mm) | H/D | t (mm) | λx0 | λy0 | α | ξ | NuT (kN) | NuFEA (kN) | NuFEA/NuT |
| L-1 | Q235 | 600 | 200 | 3 | 4 | 9 | 12 | 0.18 | 1.4 | 2620 | 2363 | 0.90 | L-2 | Q355 | 600 | 200 | 3 | 4 | 9 | 12 | 0.18 | 2.1 | 3288 | 2999 | 0.91 | L-3 | Q235 | 600 | 200 | 3 | 6 | 9 | 12 | 0.29 | 2.3 | 3055 | 2909 | 0.95 | L-4 | Q235 | 900 | 200 | 4.5 | 4 | 13 | 18 | 0.18 | 1.4 | 2403 | 2211 | 0.92 | L-5 | Q235 | 1200 | 200 | 6 | 4 | 17 | 24 | 0.18 | 1.4 | 2239 | 2151 | 0.96 | T-1 | Q235 | 900 | 300 | 3 | 4 | 11 | 16 | 0.18 | 1.4 | 3140 | 3159 | 1.00 | T-2 | Q355 | 900 | 300 | 3 | 4 | 11 | 16 | 0.18 | 2.0 | 3808 | 3978 | 1.04 | T-3 | Q235 | 900 | 300 | 3 | 5 | 11 | 16 | 0.23 | 1.8 | 3817 | 3734 | 0.98 | T-4 | Q235 | 1200 | 300 | 4 | 5 | 15 | 21 | 0.23 | 1.8 | 3580 | 3521 | 0.98 | T-5 | Q235 | 1500 | 300 | 5 | 5 | 19 | 26 | 0.23 | 1.8 | 3350 | 3297 | 0.98 |
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