Method of reinforcing damaged sections of reinforced concrete pylons of annular cross-section power transmission lines with prestressed reinforcement
Abstract
Method of reinforcing damaged sections of reinforced concrete pylons of annular cross-section power transmission lines with prestressed reinforcement
Incoming article date: 27.04.2022Reinforced concrete structures with prestressed reinforcement are a problem when it is necessary to restore or strengthen them, especially when the prestressed reinforcement is damaged or has significant corrosion. Typically, such structures have large dimensions or cover large spans. Given the scale of work to replace such structures, the development of options for strengthening or restoration is an urgent issue. One of the most complex structures with prestressed reinforcement is a high-rise power line support with an annular section. Its work in the natural environment is exposed to destructive factors that lead to the removal and destruction of prestressed reinforcement. This article is devoted to the development of a method for strengthening the damaged section of the reinforced concrete pylon of a power transmission line by replacing and prestressing the destroyed rod. The paper presents the technology of the amplification method and the main positive properties.
Keywords: heavy concrete, power transmission line support, reinforced concrete, compressed elements, threaded coupling, reinforcement