## 3 Numerical Calculation Results and Analysis
### Impact of the Antenna Arrangement Layers on the Wind Load of Telecommunication Towers  
When two or three layers of antennas are arranged on the telecommunication tower, each layer can accommodate three to six antennas, with the total antenna arrangement number being 6 to 18. Through a comparison with Section 3.2, it was found that the rate of increase in the wind load with the antenna arrangement layers is significantly greater than with the antenna arrangement number. Figures 16-19 illustrate the flow fields around the telecommunication tower under the arrangement forms associated with the maximum wind load when one layer of antennas with six antennas per layer is used, two layers with three antennas per layer, two layers with six antennas per layer, and three layers with four antennas per layer, respectively. When the total antenna arrangement number is the same, as shown in Figures 16-19, it can be seen that the interference effect between the antennas arranged on different layers is weak. Increasing the antenna arrangement layers significantly enlarges the wake region, thereby substantially increasing the overturning force coefficient. Therefore, to reduce the wind load, it is advisable in practical engineering applications to increase the antenna arrangement number per layer, thereby reducing the antenna arrangement layers. The distribution pattern of wind loads on the telecommunication tower is shown in Figures 20-25, where the values for the case of four antennas per layer represent the maximum wind load coefficient values among the three arrangement forms. By comparing Figures 20-25, it can be observed that when arranging multiple layers of antennas, the lateral force coefficient and the crosswind base overturning moment coefficient remain significantly smaller compared to the drag coefficient and the windward base overturning moment coefficient. Therefore, the values of the drag coefficient and the windward base overturning moment coefficient are very close to those of the overturning force coefficient and the overturning moment coefficient. The absolute values of the lateral force coefficient and the crosswind base overturning moment coefficient of the telecommunication tower, as they vary with the antenna arrangement layers and wind direction, are shown in Figures 22 and 23. Compared to the drag coefficient and windward base overturning moment coefficient, the lateral force coefficient and crosswind base overturning moment coefficient of the telecommunication tower are more sensitive to changes in the wind direction. They exhibit a greater range of growth  
Figure 16: Flow field around the telecommunication tower with 1 layer of antennas, 6 antennas per layer, at a wind direction of 30\({}^{o}\). rates with the increase in the antenna arrangement layers. As the symmetry of the antennas relative to the inflow wind direction improves, the values of the telecommunication tower's lateral force coefficient and crosswind base overturning moment coefficient become lower. When arranging four antennas per layer, at wind directions of \(0^{\circ}\) and \(180^{\circ}\), the symmetry is optimal, resulting in the smallest lateral force coefficient and crosswind base overturning moment coefficient at these wind directions, showing insensitivity to the increase in antenna arrangement layers. The absolute values of the tower's lateral force coefficient and crosswind base overturning moment coefficient reach 0 to 0.115 and 0 to 0.093, respectively. Figure 17: Flow field around the telecommunication tower with 2 layers of antennas, 3 antennas per layer, at a wind direction of \(30^{\circ}\). Figure 18: Flow field around the telecommunication tower with 2 layers of antennas, 6 antennas per layer, at a wind direction of \(30^{\circ}\). Figure 19: Flow field around the telecommunication tower with 3 layers of antennas, 4 antennas per layer arranged in form 1, at a wind direction of 0\({}^{\circ}\). Figure 20: Variation curve of drag coefficient of telecommunication tower with antenna arrangement layers.