Research Article
Study on Mechanical Behavior of Fully Encased Composite Slender Columns with High-Strength Concrete Using FEM Simulation
Table 13
Ductility index of columns due to structural steel shapes.
| | Column ID | Structural steel sections | Concrete Fck(MPa) | S (mm) | Peak axial load (P) | Axial deformation | Ductility index (μ = Δ0.75p/Δp) | | Δ | Δ0.75p |
| | Control-RCH1 | — | 90 | 50 | 7734.38 | 42.69 | 46.44 | 1.09 | | HC1CS | Circular | 90 | 8620.64 | 43.99 | 51.08 | 1.16 | | HC1IS | I-shaped | 90 | 8315.56 | 44.07 | 50.24 | 1.14 | | HC1RS | Rectangular | 90 | 7956.81 | 45.00 | 51.40 | 1.14 |
| | Control-RCH2 | — | 100 | 100 | 7896.18 | 45.14 | 47.58 | 1.05 | | HC2C2 | Circular | 100 | 8799.52 | 47.64 | 53.36 | 1.12 | | HC2IS | I-shaped | 100 | 8745.25 | 49.64 | 53.45 | 1.08 | | HC2RS | Rectangular | 100 | 8165.45 | 44.82 | 49.30 | 1.10 |
| | Control-RCH3 | — | 120 | 150 | 8791.67 | 46.08 | 47.10 | 1.02 | | HC3CS | Circular | 120 | 9782.54 | 45.94 | 49.68 | 1.08 | | HC3IS | I-shaped | 120 | 9647.87 | 46.60 | 48.61 | 1.04 | | HC3RS | Rectangular | 120 | 8973.71 | 44.83 | 47.65 | 1.06 |
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