## 4 Calculation Example
### Analysis Results of the Construction Technology Application
#### 4.2.1 Analysis of Cable Net Traction Lifting
\begin{table}
\begin{tabular}{c c c} \hline \hline \multirow{2}{*}{**Calculation Condition**} & \multicolumn{3}{c}{**Vertical Deformation**} \\ \cline{2-3}  & \(-\)**Uz Min (m)** & **+Uz Max (m)** \\ \hline C1 & \(-\)28.44 & 0 \\ C2 & \(-\)26.37 & 0 \\ C3 & \(-\)24.20 & 0 \\ C4 & \(-\)22.03 & 0 \\ C5 & \(-\)19.92 & 0 \\ C6 & \(-\)17.66 & 0 \\ C7 & \(-\)15.14 & 0 \\ C8 & \(-\)12.28 & 0 \\ C9 & \(-\)8.91 & 0 \\ C10 & \(-\)4.97 & 0.32 \\ C11 & \(-\)0.002 & 2.047 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Vertical deformation of lifted structure. Figure 16: Typical Uz configuration (m). 4. A total of 56 CR brackets are set at the connection between each radial cable and the CR, and each bracket is divided into inner and external support. In order to clearly show the changes in internal forces of CR brackets during the whole listing process, four groups of representative brackets are selected, which are shown in Figure 20: axis 1 (long axis), axis 6 and 8 (45\({}^{\circ}\)), and axis 15 (short axis). The changes in internal force under traction conditions are also drawn as variation curves, as shown in Figures 21 and 22. From C2 to C10, the internal force of the inner supports decreases and that of the external supports increases. In the process of traction and lifting, the internal force of the external supports near the long and short axes is basically zero, indicating that the CR has a tendency to twist inwards. The above findings indicate that when synchronous and proportional traction lifting is adopted, the deformation of the CR is too large, which exceeds the allowable deformation range of the project, and there is a tendency of local torsion. Figure 19: Variation curve of traction force. \begin{table}
\begin{tabular}{c c c c c c c c c c c c} \hline \hline
**Axis** & **C1** & **C2** & **C3** & **C4** & **C5** & **C6** & **C7** & **C8** & **C9** & **C10** & **C11** \\ \hline
1 & 18.54 & 106.76 & 108.17 & 109.95 & 112.31 & 115.57 & 120.37 & 128.09 & 142.24 & 174.69 & 332.54 \\
2 & 21.54 & 146.63 & 145.39 & 144.40 & 143.83 & 143.96 & 145.31 & 148.91 & 157.37 & 180.36 & 310.53 \\
3 & 18.64 & 87.72 & 90.18 & 93.17 & 96.90 & 101.77 & 108.50 & 118.74 & 136.67 & 175.17 & 347.06 \\
4 & 47.56 & 206.77 & 210.15 & 214.73 & 221.02 & 229.83 & 242.66 & 262.44 & 296.13 & 369.25 & 705.32 \\
5 & 58.66 & 198.90 & 208.58 & 220.35 & 235.01 & 253.93 & 279.49 & 316.50 & 376.38 & 497.38 & 1006.90 \\
6 & 66.51 & 176.75 & 186.91 & 199.16 & 214.31 & 233.67 & 259.53 & 296.54 & 355.85 & 473.84 & 960.40 \\
7 & 49.51 & 191.54 & 202.28 & 215.16 & 231.01 & 251.13 & 277.86 & 315.84 & 376.13 & 496.19 & 999.79 \\
8 & 63.26 & 176.62 & 186.91 & 199.30 & 214.56 & 233.99 & 259.84 & 296.61 & 354.96 & 470.96 & 954.06 \\
9 & 51.29 & 166.46 & 176.36 & 188.39 & 203.41 & 222.80 & 248.99 & 286.75 & 347.46 & 468.45 & 965.38 \\
10 & 21.70 & 94.78 & 98.55 & 103.15 & 108.90 & 116.37 & 126.54 & 141.44 & 165.84 & 216.27 & 440.92 \\
11 & 21.29 & 101.84 & 104.13 & 106.83 & 110.11 & 114.37 & 120.42 & 130.16 & 147.33 & 183.84 & 346.69 \\
12 & 22.22 & 36.23 & 40.35 & 45.43 & 51.97 & 60.52 & 71 The main reasons for excessive deformation and local torsion of the CR are as follows:  
Figure 21: Variation curve of internal force of typical inner CR brackets. Figure 22: Variation curve of internal force of typical external CR brackets. Figure 20: Schematic diagram of four groups of typical CR brackets. 1. Different lengths of traction cables The unevenness of the stand results in a large difference in the lengths of the traction cables when the cables are laid on it. The lengths of traction cables at the long and short axes are shorter than those at 45\({}^{\circ}\). Therefore, the tension ring at the long and short axes will leave the grandstand first when traction lifting starts, where the cable force is relatively large, resulting in inward contraction of the CR at the long and short axes. 2.