Computational and experimental simulation of wind impacts on a lattice structure

Poddaeva, Olga; Fedosova, Anastasia

doi:10.1016/j.egyr.2023.05.274

Cited by 1 publication

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cheng et al [10] introduced a new method for controlling the along-wind vibration of chimneys by adjusting the lining, which was proven to be more effective than traditional dampers through validation with beam models and finite element shell models. Poddaeva et al [11] combined numerical simulation and wind tunnel testing to study the effects of wind on lattice structures, exploring the vortex resonance excitation mechanisms of these structures. Fu et al [12] proposed a method for the wind-resistant dimensional optimization of lattice structures, emphasizing the importance of geometric nonlinear analysis and constraints of nonlinear critical load factors.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Antenna Arrangement Parameters on the Aerodynamic Performance of Telecommunication Towers

Jia,

Huang,

Liu

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

With the widespread adoption of 5G telecommunication networks, to reduce construction costs, it has become necessary to add new equipment or antennas to existing 4G and 3G telecommunication towers. This significantly changes the original aerodynamic shape of the towers, leading to a substantial increase in the wind load, which may exceed the original structure’s bearing capacity and pose a threat to the structure’s safety. This study employed three-dimensional numerical simulation methods to systematically investigate the impact of various antenna arrangement parameters, such as the arrangement number, arrangement form, and arrangement layers, on the wind load characteristics of telecommunication towers. The findings revealed that the antenna arrangement form significantly affects the sensitivity of the telecommunication tower’s wind load to the wind direction, with more uniform antenna arrangements resulting in less sensitivity. Compared to the drag coefficient and the windward base overturning moment coefficient, the tower’s lateral force coefficient and the crosswind base overturning moment coefficient are more sensitive to changes in the wind direction. The change patterns in the tower’s overturning force coefficient and overturning moment coefficient with the antenna arrangement number are essentially the same. However, as the antenna arrangement number increases, the growth rate of the tower’s overturning moment coefficient is about twice that of the overturning force coefficient. The tower’s overturning force coefficient increases approximately linearly with the increase in antenna arrangement layers, while the tower’s overturning moment coefficient exhibits a nonlinear increase with the increase in antenna arrangement layers. The rate of increase in the wind load with the antenna arrangement layers is significantly greater than that with the antenna arrangement number. Thus, to reduce wind load, it is advisable in practical engineering applications to increase the antenna arrangement number per layer, thereby reducing the antenna arrangement layers. The study also summarized a calculation method for the structural wind load of telecommunication towers, taking into account the influence of antenna arrangement parameters, providing a reliable basis for the structural design and safety assessment of telecommunication towers in practical engineering.

show abstract

Section: Introductionmentioning

confidence: 99%