Aeroelastic behavior of long-span suspension bridges under arbitrary wind profiles

Arena, Andrea; Lacarbonara, Walter; Valentine, Daniel T.; Marzocca, Pier

doi:10.1016/j.jfluidstructs.2014.06.018

Cited by 37 publications

(21 citation statements)

References 29 publications

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“…In addition, the frequencies of A-V-1 mode and A-T-1 mode are lower than that of the symmetrical mode. Moreover, according to the research of Arena et al [16], the frequencies of A-V-1 mode and A-T-1 mode of long-span bridge would decrease much more with wind velocity than that of symmetrical mode. Therefore, from the energy point of view, the instability mode of suspension bridge with double main spans would occur with an antisymmetric form.…”

Section: Mechanism Analysis Of Bilateral Antisymmetrical Instability mentioning

confidence: 95%

Numerical Study on Aerostatic Instability Modes of the Double‐Main‐Span Suspension Bridge

Zhou

Liao

Wang

2018

Shock and Vibration

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In order to investigate the aerostatic instability mode and underlying failure mechanism of the new suspension bridge with double main spans, a corresponding program based on aerostatic load increment and two-iteration scheme was developed with considering the effects of aerostatic and geometric nonlinearity. Three double-main-span suspension bridges were taken as a case study to analyze the full range of aerostatic instability with different initial attack angles. Results show that there are two aerostatic instability modes for the double-main-span suspension bridge, one of which is the bilateral antisymmetric instability mode and the other is the single-span instability mode. The critical aerostatic velocity corresponds to the instability mode that occurs first, which is dependent on structural dynamic properties and initial attack angles. In addition, mechanism of the two aerostatic instability modes was discussed in detail.

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Section: Mechanism Analysis Of Bilateral Antisymmetrical Instability mentioning

confidence: 95%

Numerical Study on Aerostatic Instability Modes of the Double‐Main‐Span Suspension Bridge

Zhou

Liao

Wang

2018

Shock and Vibration

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“…Another question is how to assess load effects in the deck if only limited data from monitoring of wind and traffic actions are available and how to combine these actions together. A recent study [2] of the aeroelastic behavior of long-span suspension bridges under wind actions shows that the effects caused by wind may negatively influence the reliability of a bridge. Another work [3] on a combination of wind and traffic loads takes vehicles as mass points and shows that forces from higher wind velocities do not always cause a shorter life but induce large stresses in the structure if combined with heavy vehicles.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Remaining Life of the Orthotropic Deck of a Bridge Exposed to Extreme Traffic and Wind Actions

Nesterova¹,

Schmidt²,

Soize³

2019

Structural Health Monitoring 2019

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Design rules in normative documents provide additional capacity to structures by using safety coefficients and considering the worst cases of loads that in most cases never occur during the life of a structure. This extra capacity allows not only to stay on a safe side during the design operational period of structures but also to re-estimate and to extend their possible operational life. One of the most appropriate ways to estimate the remaining life of an existing structure is the extrapolation of monitored actions or load effects in critical details. The main objective of the current study is the assessment of the reliability of the steel orthotropic deck of a viaduct at the end of its design life based on limited data for traffic and static wind actions. The object of study is the Millau viaduct, a cable-stayed bridge located in Southern France, which is exposed to both, heavy traffic loads and wind loading among other actions. Monitoring data used for traffic are provided from the bridge weigh-in-motion system and include six months of data for the more loaded side of the bridge. Wind velocity and directions for the same period are taken from the structural health monitoring system of the viaduct and the nearest weather station. The methodology is based on fitting the generalized Pareto distribution to extreme stresses induced by traffic actions and by wind in order to obtain return levels at the end of the 120 years design live. Reliability indexes for the most critical part of the deck are calculated for both types of load effects separately and for their combination. Moreover, the comparison between models based on data from monitoring and on European standard models is shown.

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“…The effect of idealized non-uniform mean wind velocity profiles on the buffeting response and the aerodynamic stability of long-span bridges has been studied by (Arena et al 2014;Zhang 2007), showing possible significant effects on the aerodynamic behavior. A non-uniform mean wind velocity profile measured from terrain model wind tunnel tests of the Stonecutters Bridge surroundings was also investigated in (Hu et al 2017), without any significant impacts to the bridge behavior.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Effect of Non-uniform Wind Profiles for Long-Span Bridges

Lystad

Fenerci

2019

Lecture Notes in Civil Engineering

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Long-span bridges are often designed based on the assumption of wind field homogeneity. At the Hardanger Bridge, the wind field along the bridge span is monitored though 8 3d ultrasonic anemometers. Simultaneously recorded profiles for mean wind velocity and turbulence intensity along the span are used to investigate the effect of non-uniform wind profiles on the aerodynamic behaviour of the Hardanger Bridge. Extreme non-uniformity is considered using Monte Carlo simulations to generate extreme, but realistic wind profiles based on the variability of the measured wind field. When the buffeting response of the Hardanger Bridge is considered, significant effects on the behaviour is found.

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Aeroelastic behavior of long-span suspension bridges under arbitrary wind profiles

Cited by 37 publications

References 29 publications

Numerical Study on Aerostatic Instability Modes of the Double‐Main‐Span Suspension Bridge

Numerical Study on Aerostatic Instability Modes of the Double‐Main‐Span Suspension Bridge

Estimation of Remaining Life of the Orthotropic Deck of a Bridge Exposed to Extreme Traffic and Wind Actions

Aerodynamic Effect of Non-uniform Wind Profiles for Long-Span Bridges

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