| Specimens | The axial compression ratio | Loading direction |
Pcr (kN) |
Δcr (mm) |
Py (kN) |
Δy (mm) |
Pmax (kN) |
Δmax (mm) |
Pu (kN) |
Δu (mm) |
μ | θp(rad) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KZYQ1 | 0.31 | positive | 70.0 | 3.8 | 186.7 | 16.2 | 230.1 | 30.0 | 173.5 | 40.0 | 2.4 | 0.033 |
| reverse | 90.0 | 8.7 | 191.7 | 20.0 | 253.9 | 30.0 | 216.9 | 40.0 | 2.0 | 0.033 | ||
| KZYQ2 | positive | 70.0 | 3.2 | 186.1 | 15.0 | 228.0 | 25.0 | 133.1 | 40.0 | 2.6 | 0.030 | |
| reverse | 70.0 | 7.1 | 176.5 | 18.0 | 253.6 | 35.0 | 210.6 | 40.0 | 2.2 | 0.033 | ||
| KZYQ3 | 0.36 | positive | 100.0 | 7.9 | 143.0 | 12.0 | 212.4 | 25.0 | 114.5 | 38.0 | 3.1 | 0.031 |
| reverse | 80.0 | 9.9 | 161.1 | 18.0 | 252.2 | 30.0 | 226.3 | 35.0 | 1.9 | 0.029 | ||
| KZYQ4 | positive | 90.0 | 6.7 | 161.7 | 13.5 | 218.6 | 25.0 | 149.3 | 38.0 | 2.8 | 0.031 | |
| reverse | 90.0 | 7.9 | 172.5 | 15.0 | 273.7 | 30.0 | 245.4 | 35.0 | 2.3 | 0.029 | ||
| KZYQ5 | 0.40 | positive | 110.0 | 5.3 | 151.2 | 12.0 | 194.5 | 16.0 | 166.2 | 25.0 | 2.1 | 0.021 |
| reverse | 110.0 | 5.1 | 180.7 | 12.0 | 201.9 | 16.0 | 166.9 | 25.0 | 2.1 | 0.021 | ||
| KZYQ6 | positive | 80.0 | 4.8 | 138.8 | 12.0 | 197.7 | 20.0 | 166.2 | 25.0 | 2.1 | 0.021 | |
| reverse | 80.0 | 3.9 | 165.3 | 12.0 | 197.9 | 20.0 | 150.6 | 25.0 | 2.1 | 0.021 |