Beyond design wind analysis of the eugene talmadge memorial and sidney lanier cable-stayed bridges
Ovett, Maximillian Beau
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The objective of this thesis was to determine the response of cable-stayed bridges subjected to severe wind loading. A combination of static and dynamic wind loads were considered in order to be able to predict the response of Sidney Lanier and Eugene Talmadge Memorial cable-stayed bridges located on the coast of Georgia (USA). The bridges were assessed for beyond-design wind loading using the Saffir-Simpson hurricane wind scale. The method used mechanistically tested aerodynamic forces on bridge structures under high winds. Three-dimensional finite element models (FEM) were created to measure the internal force demand placed on the bridges by wind loading. The collapse of these two bridges would have significant economic impact on the state of Georgia. The analysis proved that the two bridges are vulnerable to Category 3 hurricanes and above. Both Sidney Lanier and Eugene Talmadge Memorial cable-stayed bridges should be closed in event of major hurricanes.