Flutter and Buffeting Analysis. II: Luling and Deer Isle Bridges

Abstract

The practical applications of the finite-element software developed in Part I of this paper are demonstrated by analyzing the aerodynamic response of two prototype bridges, the Luling Bridge with a streamlined section, and the Deer Isle Bridge with a bluff section. In the Luling Bridge analysis, the self-excited forces are treated as random quantities and the wind turbulence effect is simulated with random parametric excitation analysis. In the Deer Isle Bridge flutter analysis, the self-excited forces are treated as deterministic quantities and the wind turbulence effect is included in the flutter derivatives measured in turbulent wind.