Research Article
Study on Mechanical Behavior of Fully Encased Composite Slender Columns with High-Strength Concrete Using FEM Simulation
Table 14
Ductility index of columns due to spacing of tie bars.
| Column type | Column ID | Concrete Fck(MPa) | S (mm) | Peak axial load (P) | Axial deformation | Ductility index (μ = Δ0.75p/Δp) | Δ | Δ0.75p |
| RCC | RHC1s1 | 90 | 100 | 7442.67 | 43.35 | 46.38 | 1.07 | RHC1s2 | 150 | 7350.93 | 23.52 | 24.77 | 1.05 | RHC1s3 | 50 | 7734.38 | 42.69 | 46.44 | 1.09 |
| FECC-C | CSHC1s1 | 90 | 100 | 8320.52 | 42.34 | 47.48 | 1.12 | CSHC1s2 | 150 | 8201.11 | 41.55 | 46.17 | 1.11 | CSHC1s3 | 50 | 8620.64 | 43.99 | 51.08 | 1.16 |
| FECC-I | ISHC1s1 | 90 | 100 | 8074.95 | 43.74 | 48.12 | 1.10 | ISHC1s2 | 150 | 7853.53 | 41.02 | 44.72 | 1.09 | ISHC1s3 | 50 | 8315.56 | 44.07 | 50.24 | 1.14 |
| FECC-R | RSHC1s1 | 90 | 100 | 7649.10 | 43.49 | 48.28 | 1.11 | RSHC1s2 | 150 | 7441.27 | 40.35 | 44.39 | 1.10 | RSHC1s3 | 50 | 7956.81 | 45.00 | 51.40 | 1.14 |
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