Mean wind loads on equilateral triangular lattice tower under skewed wind loading

Zhou, Qi; Zhao, Liangtao; Zhu, Qing; Zhu, Yifan

doi:10.1016/j.jweia.2020.104467

Cited by 10 publications

(2 citation statements)

References 9 publications

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“…The wind load-distribution factors are typically employed to quantify the impact of varying yaw angles. Zhou et al (2021) supposed that the wind load-distribution factors show strong regularity and are only related to the yaw angles and solidity ratios. Bayar et al (1986) explored the static wind effect of lattice tower by the force balance test of rigid model and obtained the drag coefficients of tower under different wind angles.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the aerodynamic characteristics of combined angle transmission tower subject to skew wind

Shen,

Que,

Wan

2024

Advances in Structural Engineering

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The transmission towers served as crucial carriers in the process of power transmission. The combined angle transmission tower of dual-angle steel with cruciform section are relatively a novel type of angle tower, which is being more widely used in transmission lines. The studies on aerodynamic characteristics of combined angle tower in skewed wind are limited. In this paper, the wind tunnel tests are conducted to investigate the aerodynamic characteristics of the combined angle tower, and the high frequency force balance (HFFB) test is introduced to obtain the transverse and longitudinal forces on the tower using the direct force measurement (DFM) method. The drag coefficients and wind load-distribution factors of the combined angle tower are obtained from the wind tunnel tests, and the effects of interference and tower leg spacing on the wind loads of the tower legs are fully explored. It can be found that the aerodynamic coefficients and drag coefficients of the combined angle steel tower leg tend to decrease with the increase of interference members and it also decreases with the decrease of the tower leg spacing. The test wind load-distribution factors of the isolated leg are generally larger than those defined by seven typical codes (e.g., US, EU, Japanese, and Chinese codes) and significantly exceed the code-specified values under partial wind angles. The observations obtained from this study may provide helpful guidance on the wind-resistant design of this relatively novel type of combined angle tower.

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Section: Introductionmentioning

confidence: 99%

Experimental study on the aerodynamic characteristics of combined angle transmission tower subject to skew wind

Shen,

Que,

Wan

2024

Advances in Structural Engineering

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“…The results indicate that openings can cause the wind loads along-wind of high-rise buildings to be significantly reduced. Various aspects of the wind vibration response [8,9], drag coefficients [10,11], and shading distance [12] of lattice towers have been studied by high-frequency force-measured balance tests and aeroelastic wind tunnel tests as well. However, only a few studies have considered the wind loading effects of incoming wind flowing through the external grid structure and then acting on the main structure.…”

Section: Introductionmentioning

confidence: 99%

Research on Wind Load Characteristics on the Surface of a Towering Precast Television Tower with a Grid Structure Based on Large Eddy Simulation

Chen

Feng

et al. 2022

Buildings

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Local wind pressures on tiny rods of complex grid structures are difficult to obtain through wind tunnel tests due to their small sizes after scaling down, resulting in a lack of data support in wind load calculations for similar structures. However, local wind pressures on tiny rods can be obtained through numerical wind tunnel simulation using full-sized models. In order to investigate the wind pressure distribution of a grid structure and the influence of grid structures on the wind load of core tubes, three different television tower models are established based on an engineering example for large eddy simulations. A turbulence inlet generator (NSRFG) is adopted in the simulations while reproducing a portion of the wind tunnel test section including the mean and fluctuating pressures for validation. The results indicate that the mean wind pressures on the intersection of rods in the windward zone of the grid structure are higher than those on adjacent rods. Distinct reductions in the mean and fluctuating wind pressure of the grid structure are found in different zones. Moreover, resultant wind load forces and bending moments in the X and Y direction of the grid structure generally exceed 70% of the total wind loads. Based on simulation results, extreme net wind pressures of the grid structure and shape coefficients of enclosed regular octagonal cross-section buildings with the grid structure are provided for reference.

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Aeroelastic model design and sensitivity analysis of a complicated steel truss arch tower to skew incident winds based on wind tunnel tests

2021

Journal of Wind Engineering and Industrial Aerodynamics

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Mean wind loads on equilateral triangular lattice tower under skewed wind loading

Cited by 10 publications

References 9 publications

Experimental study on the aerodynamic characteristics of combined angle transmission tower subject to skew wind

Experimental study on the aerodynamic characteristics of combined angle transmission tower subject to skew wind

Research on Wind Load Characteristics on the Surface of a Towering Precast Television Tower with a Grid Structure Based on Large Eddy Simulation

Aeroelastic model design and sensitivity analysis of a complicated steel truss arch tower to skew incident winds based on wind tunnel tests

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