The dynamic responses of transmission tower-line system present the properties of strong non-linearity and the current analytical methods for the structural random responses cannot be directly applied.In this regard,the random response analysis of transmission tower-line system under winds based on the multi-particle model was actively conduc-ted.The expression of kinetic energy and potential energy of the transmission tower-line system was established using Hamilton principle and the mechanical model of the tower-line system for the wind-excited random responses were devel-oped based on the equivalent linearization method.A real large span tower-line system was selected as an example to in-vestigated the structural random responses under wind excitation.The made observations indicate that the response prop-erties of the wind-excited transmission tower-line system can be investigated in the frequency domain.
transmission towerwind loadrandom vibrationspectral density
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