This paper presents a comparison between experimental and numerical analysis of the aeroelastic stability of the Izmit Bay Bridge, a record span suspended bridge that will be built in Turkey crossing the homonymous bay. Wind tunnel tests were performed on a 1:220 scale aeroelastic model. Experimental records show a double instability involving symmetrical and anti-symmetrical mode shapes at the same wind speed of 82 m/s. To analyze this phenomenon a numerical multi-modal aeroelastic model has been used. Numerical results confirm that this double instability occurs at the same wind speed if the side spans modes are included in the analysis.

Comparisons between wind tunnel tests on a full aerolastic model and numerical results of the Izmit Bay Bridge

ARGENTINI, TOMMASO;DIANA, GIORGIO;PAGANI, ANDREA;PORTENTOSO, MICHELE;SOMASCHINI, CLAUDIO;
2013

Abstract

This paper presents a comparison between experimental and numerical analysis of the aeroelastic stability of the Izmit Bay Bridge, a record span suspended bridge that will be built in Turkey crossing the homonymous bay. Wind tunnel tests were performed on a 1:220 scale aeroelastic model. Experimental records show a double instability involving symmetrical and anti-symmetrical mode shapes at the same wind speed of 82 m/s. To analyze this phenomenon a numerical multi-modal aeroelastic model has been used. Numerical results confirm that this double instability occurs at the same wind speed if the side spans modes are included in the analysis.
Proceedings of the 6th European and African Conference on Wind Engineering
Aeroelasticity; Flutter (aerodynamics); Stability; Wind; Wind stress, Aeroelastic modeling; Bimodal approach; Flutter instability; Long span; Modal coupling, Wind tunnels; Aeroelastic model; Bimodal approach; Double flutter; Flutter instability; Long span suspended bridge; Modal coupling
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1002735
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? ND
social impact