## 3 Numerical Calculation Results and Analysis
### Impact of the Antenna Arrangement Layers on the Wind Load of Telecommunication Towers
(**a**) Three antennas per layer. (**b**) Four antennas per layer. (**c**) Five antennas per layer. (**d**) Six antennas per layer. Moreover, as the antenna arrangement number per layer increases, the growth rate of the telecommunication tower's lateral force coefficient and the crosswind base overturning moment coefficient with the antenna arrangement layers initially rises and then falls. The maximum growth rate occurs when there are four antennas per layer, and the minimum growth rate is observed with six antennas per layer. As shown in Figure 24, when the antenna arrangement number per layer is the same, the overturning force coefficient of the telecommunication tower approximately linearly increases with the increase in antenna arrangement layers. Moreover, as the antenna arrangement number per layer increases, the growth rate of the tower's overturning force coefficient with the antenna arrangement layers also gradually increases. When three antennas are arranged per layer, the rate of increase in the telecommunication tower's overturning force coefficient with the antenna arrangement layers ranges from 7.0% to 15.2%. At the 0\({}^{\circ}\), 30\({}^{\circ}\), 90\({}^{\circ}\), 120\({}^{\circ}\), and 150\({}^{\circ}\) wind directions, the rate of increase in the telecommunication tower's overturning force coefficient with the antenna arrangement layers is very close, significantly higher than at the 60\({}^{\circ}\) and 180\({}^{\circ}\) wind directions, i.e., approximately 1.5 times higher; when four antennas are arranged per layer, the rate of increase ranges from 11.7% to 19.5%; with five antennas per layer, the range is 8.5% to 21.4%, which is the most sensitive to the wind direction, reaching the maximum values at  
Figure 21: Variation curve of windward base overturning moment coefficient of telecommunication tower with antenna arrangement layers. (**a**) Three antennas per layer. (**b**) Four antennas per layer. (**c**) Five antennas per layer. (**d**) Six antennas per layer. either the 30\({}^{\circ}\) or 150\({}^{\circ}\) wind direction; and with six antennas per layer, the rate of increase in the telecommunication tower's overturning force coefficient ranges from 12.4% to 22.2%. At the 30\({}^{\circ}\), 90\({}^{\circ}\), and 150\({}^{\circ}\) wind directions, the rate of increase in the telecommunication tower's overturning force coefficient with the antenna arrangement layers is very close, significantly higher than at the 0\({}^{\circ}\), 60\({}^{\circ}\), 120\({}^{\circ}\), and 180\({}^{\circ}\) wind directions, i.e., approximately 1.3 times higher. Figure 25 presents the variation curve of the overturning moment coefficient of the telecommunication tower in relation to the antenna arrangement layers and wind direction. From the figure, it is evident that when the antenna arrangement number per layer remains constant, the overturning moment coefficient of the telecommunication tower exhibits a nonlinear increase with additional antenna arrangement layers, which significantly differs from the trend observed in the overturning force coefficient. Moreover, as the antenna arrangement number per layer increases, the rate of increase in the telecommunication tower's overturning moment coefficient with antenna arrangement layers also gradually increases, and is significantly greater than the rate of increase in the overturning force coefficient with antenna arrangement layers. As demonstrated, when three to six antennas are arranged per layer, the range of the growth rate of the overturning moment coefficient  
Figure 22: Variation curve of lateral force coefficient of telecommunication tower with antenna arrangement layers. (**a**) Three antennas per layer. (**b**) Four antennas per layer. (**c**) Five antennas per layer. (**d**) Six antennas per layer. with antenna arrangement layers gradually elevates, specifically to 8.8% to 27.2%, 9.8% to 35.7%, 10.2% to 38.7%, and 10.8% to 41.0%, which is markedly higher than the growth rate of the overturning force coefficient with antenna arrangement layers.