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Wind and Structures Volume 38, Number 6, June 2024 , pages 477-492 DOI: https://doi.org/10.12989/was.2024.38.6.477 |
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Wind load characteristics and effects of 1000kV UHV substation frame based on HFFB |
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Hao Tang, Fanghui Li, Xudong Zhi and Jie Zhao
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| Abstract | ||
| This study presents a comprehensive investigation of wind load characteristics and wind-induced responses associated with different wind incidence angles and terrains of the 1000kV UHV substation frame. High-frequency force balance (HFFB) force measurement wind tunnel tests are conducted on the overall and segment models to characterize wind loads characteristics such as the aerodynamic force coefficients and the shape factors. The most unfavorable wind incidence angles and terrains for aerodynamic characteristics are obtained. A finite element model of the substation frame is built to determine the wind-induced response characters based on the aerodynamic force coefficients and bottom forces of the segment models. The mean and root mean square (RMS) values of displacement responses at different heights of the frame structure are compared and analyzed. The influence of wind incidence angle and terrains on wind-induced responses is also examined. The displacement responses in terms of the crest factor method are subsequently transformed into dynamic response factors. The recommended values of dynamic response factors at four typical heights have been proposed to provide a reference for the wind resistance design of such structures. | ||
| Key Words | ||
| 1000kV UHV substation frame; aerodynamic force coefficient; dynamic response factor HFFB; shape factor; wind-induced response | ||
| Address | ||
| Hao Tang:College of Civil Engineering, Heilongjiang University, Harbin 150086, P.R. China Fanghui Li:College of Civil Engineering, Heilongjiang University, Harbin 150086, P.R. China Xudong Zhi:1)Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin 150090, P.R. China 2)Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters (Harbin Institute of Technology), Ministry of Industry and Information Technology, Harbin 150090, P.R. China Jie Zhao:The Second Supervision and Inspection Station of Construction Engineering Quality of Anhui Province, Hefei 230000, P.R. China | ||