Frontiers of Structural and Civil Engineering
>> 2009,
Volume 3,
Issue 3
doi:
10.1007/s11709-009-0038-x
Research articles
Wind-induced vibration control of Hefei TV tower
with fluid viscous damper
1.College of Civil Engineering,
Southeast University, Nanjing 210096, China; 2.Design Institute, State
Administration of Radio Film & TV, Beijing100045, China;
Available online: 2009-09-05
Next
Previous
Abstract
The Hefei TV tower is taken as an analytical case to examine the control method with a fluid viscous damper under wind load fluctuation. Firstly, according to the random vibration theory, the effect of fluctuating wind on the tower can be modeled as a 19-dimensional correlated random process, and the wind-induced vibration analysis of the tower subjected to dynamic wind load was further obtained. On the basis of the others’ works, a bi-model dynamic model is proposed. Finally, a dynamic model is proposed to study the wind-induced vibration control analysis using viscous fluid dampers, and the optimal damping coefficient is obtained regarding the wind-induced response of the upper turret as optimization objectives. Analysis results show that the maximum peak response of the tower under dynamic wind load is far beyond the allowable range of the code. The wind-induced responses and the wind vibration input energy of the tower are decreased greatly by using a fluid viscous damper, and the peak acceleration responses of the upper turret is reduced by 43.4%.
京公网安备 11010502051620号
