Investigation on wind tunnel tests of a full aeroelastic model of electrical transmission tower-line system

2015 ◽  
Vol 85 ◽  
pp. 63-72 ◽  
Author(s):  
Shuguo Liang ◽  
Lianghao Zou ◽  
Dahai Wang ◽  
Hong Cao
Keyword(s):  
Wind Tunnel ◽  
Transmission Tower ◽  
Electrical Transmission ◽  
Line System ◽  
Wind Tunnel Tests ◽  
Aeroelastic Model

Wind tunnel tests and dynamic analysis of wind-induced response of a transmission tower on a hill

2021 ◽  
pp. 136943322110339
Author(s):  
Jian Guo ◽  
Changliang Xiao ◽  
Jiantao Li
Keyword(s):  
Wind Tunnel ◽  
Wind Field ◽  
Dynamic Responses ◽  
Interactive Effects ◽  
Induced Response ◽  
Transmission Tower ◽  
Structural Dynamic ◽  
Wind Tunnel Tests ◽  
Hill Slope ◽  
The Hill

A hill with a lattice transmission tower presents complex wind field characteristics. The commonly used computational fluid dynamics (CFD) simulations are difficult to analyze the wind resistance and dynamic responses of the transmission tower due to structural complexity. In this study, wind tunnel tests and numerical simulations are conducted to analyze the wind field of the hill and the dynamic responses of the transmission tower built on it. The hill models with different slopes are investigated by wind tunnel tests to measure the wind field characteristics, such as mean speed and turbulence intensity. The study shows that the existence of a transmission tower reduces the wind speed on the leeward slope significantly but has little effect on the windward slope. To study the dynamic behavior of the transmission tower, a hybrid analysis procedure is used by introducing the measured experimental wind information to the finite element tower model established using ANSYS. The effects of hill slope on the maximum displacement response of the tower are studied. The results show that the maximum value of the response is the largest when the hill slope is 25° compared to those when hill slope is 15° and 35°. The results extend the knowledge concerning wind tunnel tests on hills of different terrain and provide a comprehensive understanding of the interactive effects between the hill and existing transmission tower regarding to the wind field characteristics and structural dynamic responses.

Wind load investigation of self-supported lattice transmission tower based on wind tunnel tests

2022 ◽  
Vol 252 ◽  
pp. 113575
Author(s):  
Wentong Zhang ◽  
Yiqing Xiao ◽  
Chao Li ◽  
Qingxing Zheng ◽  
Yanan Tang
Keyword(s):  
Wind Tunnel ◽  
Wind Load ◽  
Transmission Tower ◽  
Wind Tunnel Tests

Wind tunnel tests on wind loads acting on an angled steel triangular transmission tower

2016 ◽  
Vol 156 ◽  
pp. 93-103 ◽  
Author(s):  
Fengli Yang ◽  
Huixue Dang ◽  
Huawei Niu ◽  
Hongjie Zhang ◽  
Binrong Zhu
Keyword(s):  
Wind Tunnel ◽  
Wind Loads ◽  
Transmission Tower ◽  
Wind Tunnel Tests

Research on Calculation of Equivalent Damping Ratio of Electrical Transmission Tower-Line System with Viscoelastic Dampers

2014 ◽  
Vol 1064 ◽  
pp. 115-119
Author(s):  
Cong Zeng ◽  
Dong Xue Hao ◽  
Li Qun Hou
Keyword(s):  
Calculation Method ◽  
Strain Energy ◽  
Damping Ratio ◽  
Element Model ◽  
Transmission Tower ◽  
Electrical Transmission ◽  
Line System ◽  
Equivalent Damping ◽  
Viscoelastic Dampers ◽  
The One

Installing viscoelastic dampers on electrical transmission tower will significantly reduce the wind-induced vibration response of electrical transmission tower-line system. On the basis of the concept of strain energy method with the combination of related codes and the theories of calculation for equivalent damping,a mothed is presented which is used to estimate the additional damping of electrical transmission tower-line system with viscoelastic dampers.Through a electrical transmission tower with viscoelastic dampers, based on the formula of strain energy in design code,this paper puts forward a calculation method of equivalent damping ratio based on the concept story of transmission tower,and through finite element model the responses of transmission tower with viscoelastic dampers model and the one with additional damping ratio model were compared.The simulation results show that the calculation method of equivalent damping ratio has high precision,and the errors are less than 5% in multi engineering conditions.

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