Theoretical and experimental analysis of the quasi-static and dynamic behaviour of the world's longest suspension footbridge in 2020

This work validates the simplified theoretical, analytical and numerical models used in preliminary design stage of 516 Arouca footbridge over River Paiva (Portugal), world's longest suspension footbridge. The were to define configuration bridge under static loading eigenfrequencies excited dynamic loading. three-dimensional finite element model detailed is briefly described. paper also presents situ experimental results. Tests performed study behaviour service loads assess analytical/numerical modelling assumptions. structure was subjected generated by wind a group people crossing bridge. Global Navigation Satellite System (GNSS) antennas record displacements quasi-static loadings caused at slow pace. data recorded set seismometers allowed us identify natural frequencies modes vibration. agreement between all solutions found be very good. one evaluate damping coefficients for different vibration modes, something that difficult predict stage.