RESEARCH ARTICLE


The Collapse Analysis of A Transmission Tower Under Wind Excitation



Li Tian*, 1, Qiqi Yu1, Ruisheng Ma1, Chengwu Wang2
1 School of Civil and Hydraulic Engineering, Shandong University, Jinan, Shandong, 250061, China
2 Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huaian, Jiangsu, 223001, China


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Creative Commons License
© 2014 Tian et al;

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the School of Civil and Hydraulic Engineering, Shandong University, Jinan, Shandong, 250061, China; Tel: +86 531-88396182; Fax:+86 531-88392843; E-mail: tianl-007@163.com


Abstract

The collapse of a transmission tower under wind action is studied in this paper. A three-dimensional finite element model of the transmission tower is established based on a real project. The birth-to-death element technique is adopted in ABAQUS/Explicit. Kaimal fluctuating wind power spectrum and the harmony superposition method are used to simulate the fluctuating wind speed time history. The dynamic behavior and the collapse mechanism of the transmission tower under three different angles of attack α = 0o, 45o and 90o are carried out, respectively. The results show that the collapse of the transmission tower at 45o angle of attack occurs easily, but it is contrary at 90o angle of attack. The fracture position of the transmission tower under wind excitation is obtained, and the initial damage of the members happens simultaneously in the main and the secondary element. The results of the collapse analysis can provide reference to the design of the transmission tower and the reinforcement of this structure to prevent the collapse of the tower.

Keywords: Angle of attack, collapse analysis, collapse mechanism, fluctuating wind speed, transmission tower.