WIND-INDUCED RESPONSE OF 500kV SINGLE-CIRDUIT TRANSMISSION TOWER BASED ON HIGH FREQUENCY FORCE BALANCE TESTS
ZHANG Qinghua1,2, GU Ming2
1. North China University of Water Resources and Electrical Power, Zhengzhou 450011, China;2. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China
Wind-induced responses of a 500kV single-circuit transmission tower are computed based on wind forces acting on the tower obtained from wind tunnel tests using high-frequency-force-balance technique in a wind tunnel and the modal decomposition method. The results show that the dynamic displacements,accelerations and base bending moments (BBM) are all large in both along and across wind directions, and furthermore, the across wind dynamic responses are generally larger than the along wind responses. The first mode has dominant contributions to the total responses respectively in both A and B directions. In addition, gust response factors corresponding to displacement and BBM have similar trends. The maximum displacement gust response factors of critical nodes are no more than 1.8, and the maximum moment gust response factors are about 1.5.
张庆华;顾明. 基于高频天平测力试验的500kV单回路输电塔风致响应研究[J]. , 2014, 33(4): 156-160.
ZHANG Qinghua;GU Ming. WIND-INDUCED RESPONSE OF 500kV SINGLE-CIRDUIT TRANSMISSION TOWER BASED ON HIGH FREQUENCY FORCE BALANCE TESTS. , 2014, 33(4): 156-160.