Simplified Seismic Calculation Method for Coupled System of Transmission Lines and Their Supporting Tower

In this paper, according to the simplified model of aseismic calculation of the transmission tower presented by the authors, a computer program compiled is used to calculate the seismic responses of high voltage transmission tower under the action of earthquake. The results show that the effects of the lines on the high voltage transmission tower increase as the span between two towers becomes large. And the limit span of lines that should be considered to be important in the seismic response of high voltage transmission tower is determined based on the analyses of earthquake responses of lots of transmission towers. At the end of this paper, the simplified method of aseismic calculation is presented for the transmission tower-lines coupled system.