Wind Tunnel Test on Aeroelastic Model of UHV Latticed Transmission Tower

An aeroelastic model was designed with discrete stiffness method to investigate the wind-induced response of ultra-hith voltage(UHV) transmission tower.Prototype structure is a typical suspension tower,a part of 1 000 kV UHV double-circuit transmission line from Huainan to Shanghai.Wind tunnel test on the model was conducted with different wind speeds and wind directions in a turbulent flow.Test results show that wind-induced response of the model increases with the wind speed,displacement reaches maximum at 15° 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 0° wind angle of attack,while X-direction reaches the maximum at 90° wind angle of attack,but for all cases acceleration root mean square(RMS) of X-direction is more evident than that of Y-direction.