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Simulation of Galloping and Wind-induced Vibration Control

A nonlinear finite element model of transmission tower-line coupling system including transmission tower-cable-insulator is established based on ANSYS. The restarting technology is proposed to solve the vertical, horizontal and torsional galloping of the transmission conductors and the wind-induced vibration of the transmission towers. A program is developed to simulate the wind velocity; the galloping of the transmission tower line coupling system is performed to get the amplitude of the transmissions and the internal forces of the transmission towers. The calculations are performed under the condition that four fixed schemes of lead viscoelastic dampers (LVDs) to control the transmission towers wind-induced vibration, and the schemes of the damper have been optimized.