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

Engineering

Journal of Steel Structures & Construction

Author(s): Zhuoqun Zhang, Hongnan Li, Gang Li, Wenming Wang, Li Tian

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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.

This article was published in Mathematical Problems in Engineering and referenced in Journal of Steel Structures & Construction

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