Gust Loading on Streamlined Bridge Decks

Larose, Guy L.; Mann, Jakob

doi:10.1006/jfls.1998.0161

Cited by 112 publications

(46 citation statements)

References 6 publications

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“…It has been shown (Larose 1992;Bogunovic Jacobsen 1995;Larose & Mann 1998) that the evaluation of the joint acceptance function is problematic, given the di$culty in de"ning the spatial distribution of the aerodynamic forces that appeared to be better correlated than the wind #uctuations of the incident #ow. In Larose & Mann (1998) an analytical model of the span-wise lift force coherence has been proposed and compared to direct measurements of the gust loading ) for a family of streamlined bridge decks.…”

Section: Introductionmentioning

confidence: 98%

Experimental Determination of the Aerodynamic Admittance of a Bridge Deck Segment

Larose

1999

Journal of Fluids and Structures

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Section: Introductionmentioning

confidence: 98%

Experimental Determination of the Aerodynamic Admittance of a Bridge Deck Segment

Larose

1999

Journal of Fluids and Structures

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“…Equation (41) is not connected with the motions of the system and this relation clearly shows the difference with the aeroelastic memory term (33). The variation of the turbulence parameters (e.g.…”

Section: Aerodynamic Forcesmentioning

confidence: 95%

“…The memory terms (33) and (41) represent the memory of the phenomenon and their evaluation at the instant t depends on the temporal history ofḣ( ) and w( ) for aeroelastic (non-stationary force) and buffeting forces. A strict calculation of the integral (33) and (41) calls for the use of all the previously-calculated variables and thus involves a great deal of memory and processing, that considerably increases the computational effort of the analysis [18].…”

Section: Memory Terms Of Aeroelastic Forcesmentioning

confidence: 99%

Aeroelastic forces and dynamic response of long‐span bridges

Lazzari

Vitaliani

Saetta

2004

Numerical Meth Engineering

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SUMMARYIn this paper a time domain approach for predicting the non-linear dynamic response of long-span bridges is presented. In particular the method that leads to the formulation of aeroelastic and buffeting forces in the time domain is illustrated in detail, where a recursive algorithm for the memory term's integration is properly developed. Moreover in such an approach the forces' expressions, usually formulated according to quasi-static theory, have been substituted by expressions including the frequency-dependent characteristics. Such expressions of aeroelastic and buffeting forces are made explicit in the time domain by means of the convolution integral that involves the impulse functions and the structural motion or the fluctuating velocities. A finite element model (FEM) has been developed within the framework of geometrically non linear analysis, by using 3-d degenerated finite element. The proposed procedure can be used to analyze both the flutter instability phenomenon and buffeting response. Moreover, working in the geometrically non-linearity range, it verifies the possibility of strongly flexible structures of actively resisting the wind loading.

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“…Therefore, consideration of unsteady aerodynamic characteristics are essential in the accurate modeling of forces and attendant aeroelastic response. Advances in the identification techniques for quantifying these aerodynamic forcing parameters, utilizing scaled bridge models in wind tunnels, have remarkably improved the accuracy in modeling aerodynamic forces and the prediction of aeroelastic response of overall bridges [15][16][17][18][19][20][21].…”

Section: Modeling Of Linear Unsteady Aerodynamic Forcesmentioning

confidence: 99%

New frontiers in aerodynamic tailoring of long span bridges: an advanced analysis framework

Chen

Kareem

2003

Journal of Wind Engineering and Industrial Aerodynamics

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Significant developments in bridge aeroelastic analysis have been made utilizing realistic aerodynamic force modeling for bridges with bluff sections under turbulent winds. With these developments as a background, this paper highlights state-of-the-art developments in the aeroelastic analysis and identifies new frontiers in aerodynamic tailoring of long span bridges. Challenges in the aeroelastic analysis are pointed out that include: the modeling of aerodynamic forces excited by non-stationary wind fields such as hurricanes and thunderstorms and/or for bridges located in complex topography conditions; consideration of nonlinearities in both structural dynamics and aerodynamics; and the ubiquitous issues related to turbulence. In response to these challenges, an advanced analysis framework is offered that focuses on the needs for modeling of aerodynamic and structural nonlinearities, and the effects of turbulence on long span bridges. r

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Gust Loading on Streamlined Bridge Decks

Cited by 112 publications

References 6 publications

Experimental Determination of the Aerodynamic Admittance of a Bridge Deck Segment

Experimental Determination of the Aerodynamic Admittance of a Bridge Deck Segment

Aeroelastic forces and dynamic response of long‐span bridges

New frontiers in aerodynamic tailoring of long span bridges: an advanced analysis framework

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