[1] Lin Yuxuan, Xu Zidong, Wang Hao, Liu Yaodong, et al. Analysis of wind vibration response of suspended derrick under downburst [J]. Journal of Southeast University (English Edition), 2023, 39 (4): 333-339. [doi:10.3969/j.issn.1003-7985.2023.04.002]

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Analysis of wind vibration response of suspended derrick under downburst()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

39

Issue:

2023 4

Page:

333-339

Research Field:

Civil Engineering

Publishing date:

2023-12-20

Info

Title:

Analysis of wind vibration response of suspended derrick under downburst

Author(s):

Lin Yuxuan;  Xu Zidong;  Wang Hao;  Liu Yaodong;  Zhang Han;  Zhao Kaiyong

Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education, Southeast University, Nanjing 211189, China

Keywords:

moving downburst;  suspended derrick;  deterministic-random hybrid model;  finite element simulation

PACS:

TU351

DOI:

10.3969/j.issn.1003-7985.2023.04.002

Abstract:

The vibration response of a suspended derrick was analyzed using the finite element method to accurately estimate its safety performance in a transmission structure under a downburst. Based on the deterministic-random hybrid model, the entire process wind speed of the moving downburst is simulated by a modified stochastic wave-based spectral representation method. Meanwhile, the vibration response of the suspended derrick under a downburst was obtained. The results show that the suspended derrick swings considerably under a moving downburst, and the main structure bends with a displacement amplitude of approximately 1.388 m. Moreover, the maximum tension experienced by the outer tie line and supporting rope are 45.11 and 47.06 kN, respectively. The maximum displacement and tensile force values are observed when the center of the downburst is approximately 1 100 m away from the suspended derrick. This indicates that the suspended derrick is prone to produce a large wind vibration response under the downburst, which will adversely affect the construction safety of the transmission tower. Therefore, performing relevant reinforcement and vibration reduction control measures is essential.

References:

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Memo

Memo:

Biographies: Lin Yuxuan(2000—), male, Ph. D. candidate; Wang Hao(corresponding author), male, doctor, professor, wanghao1980@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 52338011, 51978155, 52208481), China Postdoctoral Science Foundation(No. 2023M730581).
Citation: Lin Yuxuan, Xu Zidong, Wang Hao, et al. Analysis of wind vibration response of suspended derrick under downburst[J].Journal of Southeast University(English Edition), 2023, 39(4):333-339.DOI:10.3969/j.issn.1003-7985.2023.04.002.

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