# Proposed New Analytical Method of Tower Load in Large-Span Arch Bridge Cable Lifting Construction
## 4 Application in Tower Analysis
### Load-Carrying Capacity
The main components of the tower, in addition to the universal rods, include the cable tower distribution beam, see Figure 8b, the cable tower distribution beam connecting rods, see Figure 8b, the buckle tower distribution beam, see Figure 8e, the hinge seat distribution beam, see Figure 8f, and the steel pipe column, see Figure 8c. Table 11 shows the stresses in the main components of the tower. In the whole tower, the normal stresses of the cable tower distribution beam and steel pipe column are the largest, which are \(-119.372\) MPa and \(-123.368\) MPa, respectively, and they both meet the allowable normal stress. The shear stress of the main components is relatively small, and the shear stress of the buckle tower distribution beam is the largest, with the maximum value of 49.878 Mpa, which meets the allowable shear stress. Steel pipe columns play a vital role in the load-carrying capacity of the tower. Due to the influence of the topography on the right bank, the position of the anchor cannot be moved back, and the angle between the main cable and the horizontal plane is \(34.1^{\circ}\), which is relatively large, and the cable system produces a large horizontal thrust to the tower at the right bank, so the analysis is mainly aimed at the tower at the right bank. To study the load-carrying capacity of the steel pipe column of the tower at the right bank, the steel pipe columns need to be numbered. There are 18 steel pipe columns of the tower at the right bank, numbered as shown in Figure 14.  
Figure 15 shows the maximum normal stress of the steel pipe columns of the tower at the right bank under each load condition. The maximum normal stresses in the steel pipe columns occur at the top and bottom of the columns. The maximum normal stress at the top of the column occurs under the action of load condition 5, and the maximum normal stress is \(-113.209\) Mpa, which appears at the top of No. 11 steel pipe column. The maximum normal stress at the bottom of the column occurs under the action of load condition 1, and the maximum normal stress is \(-123.321\) Mpa, which appears at the bottom of No. 7 \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Name of Component** & \begin{tabular}{c} **Maximum** \\ **Normal Stress** \\ \end{tabular} & \begin{tabular}{c} **Allowable** \\ **Normal Stress** \\ \end{tabular} & \begin{tabular}{c} **Maximum Shear** \\ **Stress** \\ \end{tabular} & \begin{tabular}{c} **Allowable Shear** \\ **Stress** \\ \end{tabular} \\ \hline \
\begin{tabular}{c} Cable tower distribution beam \\ Cable tower distribution beam connecting rod \\ Buckle tower distribution beam \\ Hinged seat distribution beam \\ Steel pipe column \\ \end{tabular} &
\begin{tabular}{c} \(-119.372\) \\ 68.064 \\ \(-78.310\) \\ \(-78.310\) \\ \(-136.212\) \\ \(-123.368\) \\ \(-123.368\) \\ \hline \hline \end{tabular} Note: negative values in the table represent pressure and positive values represent tension.  
\end{table} 
Table 11: Stress of main components of tower (unit: MPa). Figure 14: Location and number of steel pipe columns of the tower at the right bank. steel pipe column is the largest and shows a sudden increase. From the bottom to the top, the stress gradually increases with the increase in height.