| Abstract: | On the Modeling of Aerodynamic Effects in the Design Phase of Bridges via 3D Structural Simulations. The use of innovative building materials has led to a trend towards increasingly light and slender structures. Especially for cable‐stayed and suspension bridges, but also for girder bridges, there has been observed a growing dynamic vulnerability. The vibrations are caused, besides pedestrian and traffic‐induced vibrations, mainly by wind action. Apart from local vibrations of cables, the global dynamic behaviour of the bridge deck is of special interest. This paper gives an overview of the analysis methods currently used in practice. Load models which are based on a two‐dimensional treatment of the flow around the cross‐sections and their numerical treatment within the framework of a 3D structural simulation are presented. The experimental measurement of stationary and instationary cross section parameters is briefly recapitulated. Application in engineering practice in both preliminary and final design phases is demonstrated by four examples. |
