SIMULATION OF AERODYNAMIC INSTABILITY OF STRUCTURES ON THE EXAMPLE OF THE BRIDGE SECTION PART 1: EVALUATION OF AERODYNAMIC INSTABILITY OF THE SECTION BY ENGINEERING METHODS

Abstract

This paper is devoted to aerodynamic instability of bridge structures. CFD simulation was used to obtain criteria of aerodynamic instability by Eurocode. Two models of turbulence (k-w SST and DES) were used in multivariate calculations to investigate influence of turbulence. Galloping, divergence and vortex shedding were investigated for Takoma bridge using engineering criteria from Eurocode. Comparison of results of all criteria is presented as well. Results show qualitative coincidence of two different models.