Numerical Wind Studies for the Vasco da Gama Bridge, Portugal

Mendes, Paulo de Sousa; Branco, Fernando A.

doi:10.2749/101686698780489252

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…Previous numerical studies using the FE method have been undertaken by, e.g., Lee et al (1995), Mendes and Branco (1998) and Selvam et al (2002). Lee et al (1995) modelled FSI through moving structured regular grids adopting the ALE formulation.…”

Section: Computational Bridge Aerodynamics Reviewmentioning

confidence: 99%

“…The static force coefficients agreed with the results obtained in the wind tunnel but some discrepancies were found with regard to the onset velocity of vortex-induced resonance. Mendes and Branco (1998) carried out flow investigations on the Vasco da Gama cable-stayed bridge (Portugal). They assumed laminar flow.…”

Section: Computational Bridge Aerodynamics Reviewmentioning

confidence: 99%

See 1 more Smart Citation

Numerical bridge deck studies using finite elements. Part I: flutter

Frandsen

2004

Journal of Fluids and Structures

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Section: Computational Bridge Aerodynamics Reviewmentioning

confidence: 99%

Section: Computational Bridge Aerodynamics Reviewmentioning

confidence: 99%

Numerical bridge deck studies using finite elements. Part I: flutter

Frandsen

2004

Journal of Fluids and Structures

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“…Some discrepancies between his results and those from wind tunnel tests were found with regard to the onset wind speed of vortex‐induced resonance. Mendes and Branco (1998) carried out laminar flow investigation on the Vasco da Gama cable‐stayed bridge for Re of 3,000. His study demonstrated that a cross section with baffles aided the suppression of torsional instability.…”

Section: Introductionmentioning

confidence: 99%

Wind Tunnel and CFD Study on Identification of Flutter Derivatives of a Long‐Span Self‐Anchored Suspension Bridge

Zhu

Chen

2007

Computer aided Civil Eng

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The Sanchaji Bridge with a main span of 328 m, located in Changsha City across Xiangjiang River, is one of the longest self-anchored suspension bridges completed in China. This article presents the results from a combined wind tunnel and CFD (computational fluid dynamics) study on identification of flutter derivatives of the bridge deck. Based on the Covariance Block Hankel Matrix (CBHM) algorithm in time domain, sectional model wind tunnel tests are conducted in smooth flow to recover modal parameters and to further identify flutter derivatives from free-decay vibration records. On the other hand, based on the ALE (Arbitrary Lagrangian Eulerian) description and a second-order projection algorithm, the CFD study uses the FVM (Finite Volume Method) on staggered grids and a forced vibration manner of the bridge deck to evaluate the flow field around the bridge deck. With the obtained aerodynamic forces acting on the bridge deck, flutter derivatives can be evaluated based on system identification. Finally, both of the suggested methods are applied to identification of flutter * To whom correspondence should be addressed. E-mail: Zwzhu@ hnu.cn. derivatives of the bridge deck of the Sanchaji Bridge. The results of the present methods have the same trends with Theodorsen analytical solutions, while the results from the CFD study compare well with those from the wind tunnel test. The agreement on the present results suggests that the aeroelastic phenomenon of bridge decks with sharp edges does not appear sensitive to the Re number and turbulence modeling.

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“…A beams structural model is necessary to obtain the natural frequencies and mode shapes because the modal data takes into account the bridge structural behaviour during the aeroelastic analysis. Examples of this kind of analysis can be found in Mendes and Branco [8] and Jurado et al [9].…”

Section: Cable Stayed Bridges Propertiesmentioning

confidence: 99%

Three examples of flutter analysis of cable-stayed bridges

Jurado¹,

Hernández²,

Nieto³

et al. 2011

WIT Transactions on the Built Environment

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There are multiple configurations permitted for a cable stayed bridge such as the number of spans, tower shapes, and cable arrangements. Therefore it is always important to study the behaviour of these types of structures against strong winds so that aeroelastic instabilities do not appear. This paper contains detailed aeroelastic analyses of three cable stayed bridges of very different configurations. Talavera Bridge over the Tagus River in Spain has only a single span of 315 m with a single pylon. The bridge has a central stay cable plane that supports the deck and two skewed planes of rear cables that allow the overall balance. The project of Miradoiros Bridge over La Coruña estuary in Spain has a classical configuration with a main span of 658 m and two secondary spans of 270 m each. The bridge has two lateral stay cable planes and an aerodynamic box girder. Finally, the future cable stayed bridge over the Forth in Scotland is studied. It has three mono-towers with a symmetrical arrangement resulting in two 650 m main spans and 325 m side spans. The deck superstructure is a single cell box girder with the stay cables anchored along the centre, so the bridge has two corridors. The software that analysed the aeroelastic instabilities of these bridges has been developed by the School of Civil Engineering at the University of La Coruña and it is based on hybrid methods. The hybrid methods are computational, although they need some coefficients and functions which must be obtained experimentally in an aerodynamic wind tunnel working with a deck sectional model. These experimental data permit the analysis of the complete structure considering the fluid-structure interaction between the wind flow and the deck.

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Numerical Wind Studies for the Vasco da Gama Bridge, Portugal

Cited by 8 publications

References 3 publications

Numerical bridge deck studies using finite elements. Part I: flutter

Numerical bridge deck studies using finite elements. Part I: flutter

Wind Tunnel and CFD Study on Identification of Flutter Derivatives of a Long‐Span Self‐Anchored Suspension Bridge

Three examples of flutter analysis of cable-stayed bridges

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