PDF(1331 KB)
Analysis of Dynamic Behavior and Wind-Induced Response of UHV Power Transmission Towers
QU Songzhao, WANG Miaomiao
Electric Power Construction ›› 2013, Vol. 34 ›› Issue (6) : 50-55.
PDF(1331 KB)
PDF(1331 KB)
Analysis of Dynamic Behavior and Wind-Induced Response of UHV Power Transmission Towers
UHV power transmission towers are featured by high height, soft structures and being sensitive to horizontal wind loads. Taking 1 000 kV UHV transmission tower project as a research object, the self vibration characteristics of transmission towers was analyzed, and the rationality of the structural arrangement was verified. Then, the fluctuating wind load was simulated based on the random vibration theory of linear filter to obtain wind vibration coefficient, whose results were compared with the calculated values in current standards. Based on the comparative analysis results, it was found that the calculated values in current standards could not accurately describe the structural characteristics of transmission towers. Finally, the wind vibration coefficients that calculated by different methods were used in finite element models for static solution, as well as the comparative analysis was carried out on the obtained internal forces of main member, which showed that the wind vibration coefficient calculated by 2012 Architectural Structure Load Standard was more reasonable for the design of UHV transmission tower, and the design calculation result was more safe.
UHV / power transmission tower / dynamic characteristics / wind vibration coefficient / wind-induced response
[1]梁峰. 输电塔的风振控制研究[D]. 武汉:华中科技大学,2006.
/
| 〈 |
|
〉 |