Vortex Shedding Induced Fatigue Fracture of Mast Tower

by Ahmad Rahimian, Cantor/Seinuk Group, New York City, United States,
Pedro Sifre, Cantor/Seinuk Group, New York City, United States,

Document Type: Proceeding Paper

Part of: Structural Engineering in Natural Hazards Mitigation


The fracture of a pair of 60m high circular steel masts is investigated. The design criteria and fabrication practices are reviewed. The cause of failure is related to the fatigued condition of the tubular steel section at critical points on the masts under high cyclic stresses induced by lock-in vortex shedding response.

Subject Headings: Vortex shedding | Fatigue (material) | Cracking | Steel structures | Failure analysis | Stress analysis | Material failures | Structural analysis

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