Abstract
In many design cases of transmission towers, wind loads of the typhoon and seasonal wind are dominant, and it is important to consider dynamic effects of tower-conductor systems, such as scale effect and resonance effect, as well as the winds effected by topography and the wind direction. In this paper, wind load evaluation formulas considering the dynamic effects based on gust loading factor and the reduction coefficients to estimate influence of non-simultaneity between tower and conductors are proposed systematically for rationalization of design wind load. Through the comparison of present method with dynamic response analyses by FEM, it is confirmed that the present wind load evaluation method is applicable to arbitrary location of cables and arbitrary wind directions.
