Vortex-induced vibration tests of circular cylinders connected with typical joints in transmission towers

Deng, Huachao; Jiang, Qi; Li, F.; Wu, Ying

doi:10.1016/j.jweia.2011.07.005

Cited by 11 publications

(3 citation statements)

References 4 publications

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“…To validate the applicability of the design method, the tubular members used in Deng's wind tunnel test are selected [22]. e basic parameters are as follows: D � 70 mm, L � 4598 mm, the slenderness ratio λ � 200, and the joint style is the same as Figure 2.…”

Section: Examplementioning

confidence: 99%

A New Radial Spoiler for Suppressing Vortex-Induced Vibration of a Tubular Tower and Its Practical Design Method

Jiang

et al. 2021

Shock and Vibration

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Circular section tubular members with smaller wind load shape coefficient and higher stability are widely used in ultra-high-voltage (UHV) transmission towers. However, the tubular members, especially those with a large slenderness ratio, are prone to vortex-induced vibration (VIV) within a specific wind speed range. The sustained vibration of members can easily cause fatigue failure of joints and threaten the operational safety of transmission lines. Consequently, a novel countermeasure for the VIV of tubular towers using a new type of radial spoiler is proposed, whose mechanism is to change the vortex shedding frequency by destroying the large-scale vortexes into small-scale vortexes. Then, the parametric analysis of different variables is carried out based on the orthogonal experiment and numerical simulation, including the height H and length B of the spoiler and the distance S between adjacent spoilers. The results show that the above three parameters all have significant influences on vortex shedding frequency. Additionally, a practical design method of the new radial spoiler is proposed, and the recommended values of H, B, and S are 1D∼2D, 1.5H∼3H, and 5D∼12.5D, respectively, where D is the diameter of the tubular member. Finally, a numerical verification of the suppression effects is carried out, demonstrating that the proposed quick design method is simple and reliable, which can be widely used in the VIV design of tubular towers.

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Section: Examplementioning

confidence: 99%

A New Radial Spoiler for Suppressing Vortex-Induced Vibration of a Tubular Tower and Its Practical Design Method

Jiang

et al. 2021

Shock and Vibration

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“…Wind tunnel test is one of the most important means to study on the wind loads and vibration responses of lattice towers (Deng et al, 2011;Célio et al, 2003). The No.…”

Section: Test Surveymentioning

confidence: 99%

Design wind loads for tubular-angle steel cross-arms of transmission towers under skewed wind loading

Yang

Niu

et al. 2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…Vortex-induced vibration is a critical problem for the steel cylinders used in tubular towers, such as transmission towers. Therefore, Deng et al [ 56 ] performed vortex-induced vibration tests on lull-scale cylinders to study the vibration performance of steel tubes connected with typical joints in transmission towers, including [-shaped gusset plate connection, U-shaped gusset plate connection, cross-gusset connection, and the flange (see Figure 7 ). The testing observations indicated that vortex-induced vibration can occur not only in laminar flows, but also in turbulent flows, and the amplitude decreases as the turbulence intensity rises.…”

Section: Wind Responses Of Transmission Tower-line Systemmentioning

confidence: 99%

Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review

Chen

Guo

Peng-yun

et al. 2014

The Scientific World Journal

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This paper presented an overview on the dynamic analysis and control of the transmission tower-line system in the past forty years. The challenges and future developing trends in the dynamic analysis and mitigation of the transmission tower-line system under dynamic excitations are also put forward. It also reviews the analytical models and approaches of the transmission tower, transmission lines, and transmission tower-line systems, respectively, which contain the theoretical model, finite element (FE) model and the equivalent model; shows the advances in wind responses of the transmission tower-line system, which contains the dynamic effects under common wind loading, tornado, downburst, and typhoon; and discusses the dynamic responses under earthquake and ice loads, respectively. The vibration control of the transmission tower-line system is also reviewed, which includes the magnetorheological dampers, friction dampers, tuned mass dampers, and pounding tuned mass dampers.

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Vortex-induced vibration tests of circular cylinders connected with typical joints in transmission towers

Cited by 11 publications

References 4 publications

A New Radial Spoiler for Suppressing Vortex-Induced Vibration of a Tubular Tower and Its Practical Design Method

A New Radial Spoiler for Suppressing Vortex-Induced Vibration of a Tubular Tower and Its Practical Design Method

Design wind loads for tubular-angle steel cross-arms of transmission towers under skewed wind loading

Dynamic Responses and Vibration Control of the Transmission Tower-Line System: A State-of-the-Art Review

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