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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 413275, 11 pages
http://dx.doi.org/10.1155/2013/413275
Research Article

The Numerical Analysis of Transmission Tower-Line System Wind-Induced Collapsed Performance

1Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China
2School of Civil and Hydraulic Engineering, Shandong University, Jinan, Shandong 250061, China

Received 25 January 2013; Revised 18 April 2013; Accepted 8 May 2013

Academic Editor: Slim Choura

Copyright © 2013 Zhuoqun Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The numerical simulation of transmission tower-line systems' progressive collapse performance is considered as a major research hotspot and significant project, due to the increasing number of wind-induced collapse accidents recently. In this study, the finite element models for single tower and transmission tower-line system were established to simulate wind-induced progressive collapse by birth-to-death element technique in ABAQUS/Explicit. The wind field, based on the Kaimal fluctuating wind power spectrum and harmonic superposition method, was constructed by MATLAB commercial software. The current research focuses on the dynamic behaviour and the mechanism of a typical transmission tower-line system progressive collapse under wind action with clear step-by-step description. The numerical simulation results demonstrated that transmission tower-line system collapse mechanism depended on the number, position and last deformation of damage elements. Since the gallop effect of conductor and ground lines were ignored in the single tower model, the transmission tower-line system model, which has higher computational precision than the single tower model, is relatively accurate and recommended strongly in the design.