Effect of sway movement and motion axis on flutter and vortex induced vibration in a 3 DOF wind tunnel sectional test

Prud׳homme, Simon; Légeron, Frédéric; Laneville, A.

doi:10.1016/j.jweia.2014.11.001

Cited by 5 publications

(6 citation statements)

References 6 publications

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“…In fact a natural wind is a turbulent flow and a boundary layer exists near the surface of the ground, the effect of the boundary layer was neglected and the experiments were performed in a uniform flow. The condition in the wind tunnel tests was more severe than the actual condition because the side force estimated on this condition was considered to be larger than that in real-life condition [14].…”

Section: Working Conditionsmentioning

confidence: 99%

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Vehicle Effect on Vortex-induced Vibration of Flat Steel Box Girder

Yang¹,

Liang²,

Wu³

et al. 2016

TOCIEJ

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Vortex-induced vibration (VIV) occurs at low wind speed under normal condition, affected greatly by section type of bridge and its ancillary facilities. Few researches on VIV of vehicle-bridge system are conducted, and many researchers pointed that vehicle-bridge system should be paid attention to in wind tunnel test. In this paper, type of vehicle, number of vehicle and distance of traffic flow’s influence on VIV were studied with a flat steel box girder model. Results obtained from wind tunnel tests were displayed in order to prove the following rules: First of all, compared with conditions without vehicles, response of VIV is reduced severely when a vehicle is placed on the bridge. Secondly, response of VIV and range of VIV with three vehicles are greater than one vehicle on the bridge. At last, VIV is reduced when distance of traffic flow increases. Mechanism from fluid dynamic point view is given by simulating the working conditions with ANSYS 14.5.

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Section: Working Conditionsmentioning

confidence: 99%

“…Vortices directions between (-45-45)°were shown in Fig. (12)(13)(14), and the aerodynamic configuration of the bridge saw a significant change due to the vehicles. From Fig.…”

Section: Fig (10) Vortices Value With a Sedan Car On The Bridge (S -1mentioning

confidence: 99%

Vehicle Effect on Vortex-induced Vibration of Flat Steel Box Girder

Yang¹,

Liang²,

Wu³

et al. 2016

TOCIEJ

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“…The aerodynamic balance described by Prud'homme et al (2015) was used. For the purpose of this study, the balance was set rigid by replacing the springs by prestressed rigid chains.…”

Section: Experimental Programmentioning

confidence: 99%

“…For comparison purpose, the full scale peak flutter speeds of motion calculated for the cable stay bridge studied in Prud'homme et al (2015) are 24.8 mm/s for the sway, 32.3 mm/s for the heave and, 4.18°/s for the twist. The calculated full scale flutter speed was around 20.5 m/s.…”

Section: Toward Similitude Criteria For Dynamic Force Coefficientsmentioning

confidence: 99%

Transient flutter analysis of bluff bodies

Prud׳homme

Légeron

Laneville

2015

Journal of Wind Engineering and Industrial Aerodynamics

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“…Guo [7] found that the side force and rolling moment coefficients of the vehicle were efficiently reduced by a single-side wind barrier, but for the bridge deck these values were increased. Prud'homme [8] studied the influence between the sway movement and motion axis on flutter and vortex induced vibration in a 3 DOF wind tunnel test. Zhu [9] studied the aerodynamic force distribution characteristics of a twin-box bridge deck by wind tunnel pressure test.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Admittance Research on Wide-body Flat Steel Box Girder

Liu¹,

Zhang²,

Wu³

et al. 2016

TOCIEJ

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Aerodynamic admittance is a key parameter affecting the analysis accuracy of the bridge buffeting response. However, few articles have covered the issue of the wide-body flat box girder with much smaller depth-width ratio (such as 1/12 studied in this paper). Therefore, to explore the real buffeting force of the wide-body flat box girder, experiments of the static force coefficients and aerodynamic admittance are carried out in wind tunnel. Wooden segmental model has a scale ratio of 1/60 to an actual 42 m wide suspension bridge girder. Using the high-frequency-force-balance (HFFB) equipment fixed with the segmental model under the conditions of different wind speeds and different wind attack angles, wind power spectrums of the buffeting force are measured and the variation of aerodynamic admittance parameters is analyzed. The results show that the aerodynamic admittance of the box girder measured in the experiment with this so much smaller depth-width ratio differs from the corresponding classical Sears expression. Some inspiration can be presented for the future study of the buffeting response for this kind of much wider bridge with the similar ratio in this paper.

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Effect of sway movement and motion axis on flutter and vortex induced vibration in a 3 DOF wind tunnel sectional test

Cited by 5 publications

References 6 publications

Vehicle Effect on Vortex-induced Vibration of Flat Steel Box Girder

Vehicle Effect on Vortex-induced Vibration of Flat Steel Box Girder

Transient flutter analysis of bluff bodies

Aerodynamic Admittance Research on Wide-body Flat Steel Box Girder

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