|
| Simulation and Analysis of Strong Wind Response of Transmission Tower Line System under Marine Atmospheric Environment |
| Received:December 13, 2024 Revised:January 06, 2025 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2025.02.007 |
| KeyWord:transmission tower line system typhoon Meranti Cl‒ corrosion marine atmosphere finite element analysis wind-induced collapse |
| Author | Institution |
| CHENG Jiangzhou |
College of Electrical Engineering & New Energy, China Three Gorges University, Hubei Yichang , China;Hubei Transmission Line Engineering Technology Research Center, Hubei Yichang , China |
| XIE Zhuoran |
College of Electrical Engineering & New Energy, China Three Gorges University, Hubei Yichang , China |
| LI Xin |
College of Electrical Engineering & New Energy, China Three Gorges University, Hubei Yichang , China;Hubei Transmission Line Engineering Technology Research Center, Hubei Yichang , China |
| ZHANG Zhiqiang |
College of Electrical Engineering & New Energy, China Three Gorges University, Hubei Yichang , China |
| DENG Haifeng |
State Grid Hubei Electric Power Company Yichang Power Supply Company Operation and Maintenance Department, Hubei Yichang , China |
| ZHENG Haowen |
College of Electrical Engineering & New Energy, China Three Gorges University, Hubei Yichang , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The work aims to study the vulnerability of the transmission tower line system in the coastal area based on the actual field data.First of all, combined with the actual disaster situation, the geographical and climatic characteristics of the transmission lines that were vulnerable to typhoons were studied, and the corrosion mechanism of steel members of the transmission tower under the marine and atmospheric corrosion environment was studied, and a time-varying model of corrosion depth and mechanical properties degradation was established. Then, a finite element model of the tower line system was established, the wind load was applied to it to reproduce the wind-induced response process and analyze the wind-induced collapse results. The result showed that the angle steel at the junction of the tower foot and the foundation was all bent, and the stress ratio of the main material of the tower body was overloaded by 6%-23%, resulting in overall instability. The tower head was twisted seriously, and the actual load borne by the tower head bend arm exceeded the designed load by 20%-38%. In conclusion, the proposed time-varying steel structure corrosion model can better fit the wind resistance of the actual tower line system, and the wind resistance of the lower part of the tower body and the lower member of the tower leg in the background of the typhoon plays a decisive role in the collapse of the tower, and the results of the study can provide a reference for the design of coastal transmission lines |
| Close |
|
|
|