RESEARCH ARTICLE


Wind-induced Vibration Optimal Control for Long Span Transmission Tower-line System



Li Tian*, 1, Qian Wang1, Qiqi Yu1, Nuwen Xu2
1 School of Civil and Hydraulic Engineering, Shandong University, Jinan, Shandong, 250061, China
2 College of Water Resources and Hydropower, Sichuan University, Chengdu, Sichuan, 610065, China


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© 2013 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

In this paper, tuned mass dampers with optimal parameters for long span transmission tower-line system are investigated. Equations of motion for a structure-TMD system are derived, and the parameters of TMD, stiffness and damping are optimized, respectively. According to a real project, three-dimensional finite element models of both transmission tower and transmission tower-line system are created and their vibration performances are analyzed using SAP2000 software, respectively. Wind load time history is simulated based on wind theory. Using numerical simulation, vibration control with optimal tuned mass damper installed in transmission tower-line system is carried out. Time history curves and the maximum responses of system without and with tuned mass damper under wind excitation are analyzed and discussed. The results show that the optimal tuned mass damper could effectively decrease the wind-induced response of long span transmission tower-line system.

Keywords: Long span transmission tower-line system, tuned mass damper, Wind-induced optimal vibration control, numerical simulation.