Wind Field Characteristics of 3- Dimensional Hill and Its Influence on Wind-induced Response of Transmission Tower
YAO Jianfeng1, SHEN Guohui1, LOU Wenjuan1, Guo Yong2, XING Yuelong2
1 College of Civil Engineering and Architecture, Zhejiang University, 310058 Hangzhou , China；
2 Electric Power Design Institute of Zhejiang Province, 310007 Hangzhou, China
Abstract：Computational Fluid Dynamics (CFD) simulation on a 3-Dimensional (3D) hill was carried out to obtain the wind field characteristics of the hill. The simulation results were compared with those calculated by the Codes of various countries. A finite element model of a transmission tower was built and wind-induced responses of the tower were calculated. The wind-induced responses of transmission tower based on wind fields obtained from the CFD simulation and Codes of various countries were compared. Finally, the wind-resistant zones on 3-D hill for transmission tower are suggested. Results show that speed-up ratio at the hill top is the biggest among all positions of the hill. And in the wake zone and lower part of windward zone of the hill, the speed-up ratio is relatively small. Speed-up ratios calculated by Chinese Code and American Code are symmetric on the windward side and leeward side and vary linearly with the bottom distance. Speed-up ratios obtain from the CFD simulation are between the data obtained from Japanese Code and Australian Code and are less than the data obtained from Chinese and European Code. The amplifying factor of wind-induced response reaches its maximum value at the top of hill and is relatively small in the wake zone and lower part of windward zone of the hill. The wind-resistant zones on 3-D hill for transmission tower could be divided to four zones based on the response of base bending moment.
收稿日期: 2016-05-23
出版日期: 2017-09-15
引用本文:
姚剑锋1, 沈国辉1, 楼文娟1, 郭勇2, 邢月龙2. 三维山体的风场特征及对输电塔风致响应的影响[J]. 振动与冲击, 2017, 36(18): 78-84.
YAO Jianfeng1, SHEN Guohui1, LOU Wenjuan1, Guo Yong2, XING Yuelong2 . Wind Field Characteristics of 3- Dimensional Hill and Its Influence on Wind-induced Response of Transmission Tower. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(18): 78-84.
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