Comparação teórico-experimental do comportamento dinâmico de uma ponte estaiada sob ação de vento turbulento

Abstract

This work investigates different methods to theoretical and physical modelling of a cable-stayed bridge, with the purpose of estimating its dynamic response under turbulent wind action. A theoretical-computational model was built and undergone to different kinds of loads – static and dynamic – considering wind flow conditions that represent the bridge’s site. The calculation of the loads applied on the theoreticalcomputational model, as well as the theoretical-experimental comparison of the responses in terms of accelerations and displacements were based on wind tunnel tests data, taken from a sectional model of the bridge deck and a full 3D aeroelastic model. Correlation between results enabled the validation of the full bridge aerodynamic analysis theory and the estimation method of the bridge deck response.