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The application of high-strength aluminum alloy materials in transmission towers has made progress
- China Aluminium Network
- Post Time: 2022/11/17
- Click Amount: 611
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【Aluminum Road Network】
Recently, the State Grid Corporation headquarters management science and technology project "High-strength aluminum alloy transmission tower design and processing technology and standardization research" led by China Electric Power Research Institute (hereinafter referred to as China Electric Power Research Institute) passed the acceptance.
Conventional transmission towers are constructed of steel, and need to be protected by hot-dip galvanizing, which pollutes the environment. At the same time, there are difficulties in the transportation and construction of steel transmission towers in rugged mountainous areas. The project team explored the use of high-strength aluminum alloy materials to replace traditional steel materials, carried out technical research and development of high-strength aluminum alloys in transmission towers, formed high-strength aluminum alloy tower raw materials, profiles, processing, and design technical conditions, and realized tower material processing without galvanizing, Weight reduction. The project results can be used for material selection, structural design and product processing of aluminum alloy transmission towers.
The Institute of Power Transmission and Transformation Engineering, China Electric Power Research Institute, used the research results of the project to carry out the true type test of the first self-supporting aluminum alloy pole tower in China. The test tower uses the 7A21 and 7A41 high-strength aluminum alloy materials developed by the project, and adopts the new YT section profile newly developed by China Electric Power Research Institute. The test tower is equipped with 60 strain measurement points and 12 displacement observation points, and the strain measurement and displacement observation of important components, nodes and overall deformation of the aluminum alloy tower are carried out throughout the process. There are 6 working conditions in the test, and the overload test of the 90-degree windy condition is carried out. The prototype test successfully verified the rationality of the design method and processing technology of the high-strength aluminum alloy tower.
The project explores the application of high-strength aluminum alloy materials in power transmission self-supporting towers Source:
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