| Issue |
E3S Web Conf.
Volume 252, 2021
2021 International Conference on Power Grid System and Green Energy (PGSGE 2021)
|
|
|---|---|---|
| Article Number | 03033 | |
| Number of page(s) | 5 | |
| Section | Energy Technology Research and Development and Green Energy-Saving Applications | |
| DOI | https://doi.org/10.1051/e3sconf/202125203033 | |
| Published online | 23 April 2021 | |
The inspection and strength checking of old circular prestressed reinforced concrete pole
1 State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, China
2 State Grid Hunan Electric Power Corporation Shaoyang Power Supply Company, Shaoyang 414000, China
* Corresponding author’s e-mail: yjhu1@mail.buct.edu.cn
The capacity expansion of the old transmission lines will lead to an increase in the load level of exsiting prestressed reinforced concrete pole. In this work, the structural parameters of old pole were detected by X-ray imaging technology. The force conditions of the modified concrete pole under the design conditions and actual service conditions were analyzed by Midas/civil. And combined with the calculation of bearing capacity of the circular prestressed reinforced concrete section, the strength checking was conducted. The results showed that X-ray imaging technology can be used to detect the number of steel bars in pole. In addition, the reforming scheme that existing prestressed reinforced concrete poles were used and original LGJ70/10 conductors were replaced with LGJ95/15, still possess considerable safety factor under the actual maximum load conditions.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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