Abstract
In this study, three-dimensional finite element models of transmission tower-line systems were established, analyzed and simulated wind-induced progressive collapse by birth-to-death element technique in ABAQUS/Explicit. This research provided clear step-by-step descriptions of various procedures for progressive collapse analysis of different transmission tower-line systems by wind load. The numerical simulation results demonstrated that wind-induced collapsed performance of transmission tower-line system could be simulated clearly. For the Claw-type and Stem-type double circuit transmission tower-line systems, the progressive collapse speed and path were different under the same wind loading and related to the structural topology form and material characteristics closely. Therefore, the numerical simulation of progressive collapse process was considered as a significant and necessary project.
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