Aerodynamic Study of the Neva Twin Cable-Stayed Bridge
This paper deals with aerodynamic study of the Neva Cable-Stayed Bridge, St. Petersburg, Russia. The bridge will be act as new attraction of the town and its construction is well underway. Aerodynamically dominating features of this bridge include light-weight steel box structures (deck and pylons), span-length of 382 m and twin bridge configuration. Of special interest are fluid couplingeffects due to adjacent decks, performance of the double box cross-section, vortex shedding and
cable vibrations. Rigorous analysis is conducted employing wind-tunnel testing of full models, analytical calculations and monitoring. The calculations, using state-of-the-art frequency-domain methods to each phenomenon, are conducted both independently and parallel with wind-tunnel testing. Analysis results are being verified through continuous long-term monitoring at construction stage. A close insight to aerodynamic performance of the bridge and reliability of analysis methods
are obtained, resulting some experiences and observations for wider scope.
Igor Koljushev, Risto Kiviluoma
Risto KIVILUOMA, D.Sc., Managing Director, Sormunen & Uuttu Ltd ConsultingKORTES Group, Helsinki, FINLAND