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Dynamic analysis of a typical transmission line section under strong wind was carried out. Firstly, according to the design conditions of the typical transmission line section, a three dimensional finite element analysis model of cup tower-stay frame tower-conductor-ground wire-insulator system was established in ANSYS. The initial tension force of the conductors was applied by the cooling method...
The current paper investigates a destructive accident of Zhengxiang transmission line, in which there was six-tower collapse that might be demonstrably conducted by the downburst gust. Based on the dynamic stress analysis of tower members under the strong wind, tower collapse procedure is simulated by finite element method. Finite element method together with material nonlinearity, large deformation,...
The overall stability and local stability of legs on UHV transmission steel tubular tower are controlled by the slenderness ratio and the diameter-thickness ratio of steel bar respectively. 8 typical steel tubular towers with double circuit transmission lines on the same tower in 1000kV transmission project of Anhui Province-Shanghai (the 1000kV Huainan to Shanghai transmission line, the PROJECT as...
The tower foundation above the goal of the coal mine is easily deformed, which causes a serious threat to the safe operation of ultra-high voltage (UHV) transmission lines. In this paper, the finite-element model of a typical 1000-kV UHV ac transmission tower was established in general software ANSYS, and the axial forces of the members as well as their variation trends were analyzed under different...
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