Effect of incident directionality on seismic responses and bearing capacity of OLF1000

Gong, Jun; Zhi, Xu; Fan, Feng

doi:10.1016/j.engstruct.2021.112542

Cited by 12 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the impact of natural disasters on the UHV power grid may be very serious. For example, transformer frames, which have characteristics common with high-rise (Music and Soto, 2021) and long-span structures, are susceptible to ice and earthquake loads (Gong et al, 2020a(Gong et al, , 2020b(Gong et al, , 2021(Gong et al, , 2022, as well as to wind loads, and they are prone to vibration fatigue damage and collapse under extreme conditions.…”

Section: Introductionmentioning

confidence: 99%

HFFB Test and Wind-Induced Vibration Analysis on 1 000 kV Transformer Frame

Shang¹,

Gong²,

Zhi³

et al. 2022

Ing. Inv.

Self Cite

View full text Add to dashboard Cite

In order to propose a complete, wind-resistant design method for ultra-high voltage (UHV) transformer frames, the wind-induced vibration characteristics of a 1 000 kV transformer frame (TF1000) were studied using a high-frequency force balance (HFFB) test. Five section models and one whole model of the TF1000 were designed and constructed using 3D printing, and these were evaluated in a wind tunnel by means of HFFB tests for multiple loading scenarios. The finite element method (FEM) was used on the test data to analyze the wind-induced vibration on the TF1000. The results demonstrate that the shape factor of the TF1000 is significantly affected by the flow field type and solidity ratio; the minimum value occurs when the wind direction is between 30 and 45°. Moreover, all the shape factor values obtained by the test are larger than those established by the Chinese code. The wind-induced vibration analysis indicates that the most unfavorable wind direction for the TF1000 is approximately 60°, with a wind-induced vibration coefficient between 1,7 and 3,9.

show abstract