Research on Dynamic Characteristics Detection Method of Tall Power Transmission Tower
DOI:
https://doi.org/10.54097/hset.v56i.10792Keywords:
high-rise steel structure; transmission line tower; dynamic characteristic; modal testing.Abstract
In addition to the gravity of the structure itself and the supported object, the open-air high-rise supported steel structure tower mainly bears dynamic loads. Take the transmission line tower as an example, such as wind load, conductor galloping, tower vibration and sudden unbalanced tension caused by line breaking. It is necessary to study the dynamic characteristic parameters to know the structural resistance to dynamic load. Therefore, from the perspective of dynamic safety evaluation, this paper designed the acquisition method of dynamic characteristic parameters and established a reliable finite element modal analysis model of transmission tower. Finally, the dynamic characteristic parameters such as natural frequency, vibration mode and amplitude of transmission line steel tower were obtained. It was found that the inclined material of the transmission tower might be unstable when the high-order natural frequency resonance occurred, which had important practical significance for structure design optimization and safety evaluation.
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References
Wang Shengyi, Xuan Xiaokun, Yu Zhen, Xia Jun. Comprehensive intelligent prediction method of transmission line project cost based on clustering [J]. Shandong Electric Power Technology, 2019, 46 (05): 12-16
Zhao Yong, Sun Qigang, Song Zhuoyan, Wang Dahai, Wang Xin. Wind induced vibration response and load evaluation method of transmission tower under moving downburst [J]. Vibration and Impact, 2021,40 (12): 179-188+195.
Li Tianwei, Jiang Siyan, Zhao Jianhua, Luo Bing. Analysis of transmission line wind disaster accidents in coastal areas of China Southern Power Grid [J]. High Voltage Apparatus, 2016, 52 (06): 23-28.
Wang Zhangqi, Qi Lizhong, Yang Wengang. Strength Analysis of 500kV Transmission Tower under Tornado [J]. Guangdong Electric Power, 2016,29 (10): 102-108.
Zhang Bingliang, Zhang Duqing, Han Liang. Laser remote ice melting test and analysis of overhead transmission lines [J]. Shandong Electric Power Technology, 2019, 46 (01): 78-80.
Zhang Jianqi, Zhang Dekai, Deng Hongzhou. Response analysis of long span transmission tower line system disconnection [J]. Shandong Electric Power Technology, 2021,48 (06): 15-21.
Wang Zhaomin. Design Manual of Tall Structures [M]. Beijing: China Architecture Press, 1995.
Cao Meigen, Xu Zhonggen, Liu Zhiyong. Theoretical Analysis on Dynamic Characteristics of Long Span Steel Pipe Composite Tower [J]. Electric Power Construction, 2005 (12): 51-54.
Qu Chengzhong, Yang Shenghui, Liu Yuejun Study on Natural Vibration Period of Cathead Tower [J]. Building Structure, 2012, 42 (03): 78-79+71.
Zhang Miao. Power System Design and Analysis of Tracked Beach Cleaning Vehicle [D]. Xiamen Institute of Technology, 2015.
Shi Peicheng. Vibration isolation analysis and optimization research of automobile powertrain mounting system [D]. Hefei University of Technology, 2010.
Xu Jianwen, Xu Lianhuan, Wang Xinbing, Lu Wenbo, Cheng Junwei. Research on vibration and noise of transformer based on finite element method [J]. Shandong Electric Power Technology, 2018,45 (05): 28-34+44.
Zhang Zihao. Analysis of influence of different energy dissipation forms on staggered truss steel structure system [D]. Dalian University of Technology, 2016
Sun Qian, Yan Wangji, Ren Weixin. Working modal parameter identification of bridge structures based on response transfer ratio [J]. Engineering Mechanics, 2017,34 (11): 194-201.
Ding Feng, Xu Ling, Liu Ximei. Transfer function identification (3): sine response two-point method and multi-point method [J]. Journal of Qingdao University of Science and Technology (Natural Science Edition), 2018, 39 (03): 1-15.
Zhang Lingmi. Progress of experimental modal analysis technology [J]. Journal of Vibration Engineering, 1987 (01): 71-82.
Zhang Xiaoying. Analysis of the influence of connection type on the vibration characteristics of GLARE laminated plate connection structure [D] Harbin Institute of Technology, 2018.
Chen Changshong, Tian Zhongchu, Yan Donghuang, Zheng Wanfen. Research on optimal modal identification of long-span double ribbed concrete cable-stayed bridge based on environmental excitation [J]. Vibration and Impact, 2006 (05): 158-161+199.
Wang Jiang, Du Xiaofeng, Tian Wanjun, Han Xiaolin, Zheng Wangan. Vibration Test and Modal Identification of Huaihe River Large Crossing Transmission Tower of 500kV Huai Beng Line [J]. China Power, 2009, 42 (02): 30-33.
Feng Yunwei. Research on ANSYS Modeling and Dynamic Characteristics of Transmission Tower [J]. Steel Structure, 2008 (01): 21-23+31.
Li Qinghua, Yang Jingbo. Research on Fast Modeling of UHV Transmission Tower Dynamic Characteristics Analysis [J]. Power Construction, 2006 (05): 5-7.
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