Wind Tunnel Test on Aeroelastic Model of UHV Latticed Transmission Tower

Abstract:

An aeroelastic model was designed with discrete stiffness method to investigate the wind-induced response of UHV transmission tower. Prototype structure is a typical suspension tower, a part of 1000kV UHV double-circuit transmission line from Huainan to Shanghai. Wind tunnel test on the model has been conducted with different wind speeds and wind directions in a turbulent flow. According to the results of the test, it is obtained that wind-induced response of the model increases with the wind speed, displacement reaches maximum at 15o wind angle of attack, the vibration response of X-direction is close to that of Y-direction and the transverse response is evident. And acceleration response on the Y-direction reaches the maximum at 0o wind angle of attack, while X-direction reaches the maximum at 90o wind angle of attack, but for all cases acceleration RMS of X-direction is more evident than that of Y-direction.