Research Article
Analysis of Wind-Sand-Load-Induced Dynamic Response of Transmission Tower-Line Systems
Table 4
Dynamic response value and growth rate.
| | Dynamic response | Load cases | Floating dust | Blowing sand | Sandstorm | | Weak | Medium | Strong | Extra strong |
| | Displacement at tower top (mm) | Wind | 2.92 | 11.72 | 32.61 | 73.498 | 124.18 | 177.72 | | Wind-sand | 2.93 | 11.75 | 33.11 | 76.32 | 155.97 | 223.22 | | Increment | 0.08% | 0.26% | 1.54% | 3.84% | 6.40% | 25.60% |
| | Acceleration at the tower top (m/s2) | Wind | 0.1 | 0.41 | 1.12 | 2.51 | 4.45 | 6.95 | | Wind-sand | 0.1 | 0.41 | 1.13 | 2.61 | 4.73 | 8.7292 | | Increment | 0.08% | 0.26% | 1.54% | 3.84% | 6.40% | 25.60% |
| | Max. axial force (kN) | Wind | 1.16 | 4.65 | 12.96 | 29.24 | 51.61 | 73.92 | | Wind-sand | 1.16 | 4.66 | 13.16 | 30.36 | 64.82 | 92.84 | | Increment | 0.08% | 0.26% | 1.54% | 3.84% | 6.40% | 25.60% |
| | Max. disp. of upper conductor (mm) | Wind | 1.29 | 5.67 | 16.96 | 40.49 | 76.72 | 113.54 | | Wind-sand | 1.29 | 5.68 | 17.22 | 50.86 | 81.63 | 142.61 | | Increment | 0.08% | 0.26% | 1.54% | 3.84% | 6.40% | 25.60% |
| | Max. disp. of middle conductor (mm) | Wind | 1.32 | 5.94 | 18.06 | 43.64 | 71.81 | 119.44 | | Wind-sand | 1.32 | 5.96 | 18.34 | 45.32 | 76.4 | 150.02 | | Increment | 0.08% | 0.26% | 1.54% | 3.84% | 6.40% | 25.60% |
| | Max. Disp. of lower conductor (mm) | Wind | 1.3 | 5.43 | 15.58 | 35.94 | 73.19 | 111.51 | | Wind-sand | 1.3 | 5.44 | 15.82 | 37.32 | 77.87 | 140.06 | | Increment | 0.08% | 0.26% | 1.54% | 3.84% | 6.40% | 25.60% |
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