Reduction of vortex-induced oscillations of Rio–Niterói bridge by dynamic control devices

Battista, Ronaldo C.; Pfeil, Michèle S.

doi:10.1016/s0167-6105(99)00108-7

Cited by 107 publications

(33 citation statements)

References 5 publications

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“…The time-domain simulation results indicated that the girder and TMD responses did not exceed the maximum allowable values. The TMDs were then applied to control the VIVs of the Rio-Niterói Bridge in Rio de Janeiro, Brazil [9,10]. The numerical simulation results showed that the TMDs under active control had a better performance in reducing and controlling the responses of the VIVs.…”

Section: Introductionmentioning

confidence: 99%

Separation Control on a Bridge Box Girder Using a Bypass Passive Jet Flow

Zhang

Chen

et al. 2017

Applied Sciences

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Abstract:In the present study, a bypass passive jet flow control method was proposed to mitigate unsteady wind loads and to manipulate the flow field around a single box girder of a bridge. With a geometric ratio of 1:125, the single box girder model was determined using the cross-section of the Great Belt East Bridge. During the experiments, one test model without control was adopted, while five different test models with different suction/jet configurations were employed to analyze the effects of the control method and to reveal the underlying mechanism of different control schemes. The incoming wind speed was fixed to 12 m/s and the wind attack angles were changed from −20 • to 20 • , resulting in a corresponding Reynolds number of Re = 0.28 × 10 5 -0.74 × 10 5 based on the different attack angles. A six-component force balance, a set of digital sensor array (DSA) pressure transducers, and a particle image velocimetry (PIV) system was used to measure the aerodynamic forces, pressure distributions, and flow fields around the test models to evaluate the control effectiveness of different control cases. Detailed flow structures are presented and discussed for two test cases when the angles of attack are +15 • and −20 • . The effects of control on the aerodynamic forces were first investigated to determine and select the best one out of five control cases. The pressure distributions on the surface of the test model without control and the best control case were then compared to evaluate the control effectiveness of the pressure gradient and the fluctuating pressure coefficients. The flow fields around the test models demonstrate that the bypass passive jet flow control could decrease vortex strength, delay flow separation, and change recirculation region and size. The results of the aerodynamic forces, pressure distributions, and flow fields indicate that the bypass passive jet flow control method results in effective control.

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Section: Introductionmentioning

confidence: 99%

Separation Control on a Bridge Box Girder Using a Bypass Passive Jet Flow

Zhang

Chen

et al. 2017

Applied Sciences

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“…Prior to opening, the bridge experienced low frequency, high amplitude oscillations which required the addition of turning vanes to alter the vortex shedding characteristics in order to mitigate the instability (Larsen et al, 2000). Not all bridges exhibit these dangerous oscillations because specific cross-section geometries create characteristically different oscillating wakes; however, these issues have been common enough (e.g., Battista and Pfeil 2000;Larsen et al, 2000;Fujino and Yoshida, 2002) the problem merits greater consideration. One of the challenges is that these ''elongated'' bluff bodies have leading edge flow separation, followed by reattachment along the body and subsequent separation at the trailing edge.…”

Section: Introductionmentioning

confidence: 99%

Features of the turbulent flow around symmetric elongated bluff bodies

Taylor

Palombi

Gurka

et al. 2011

Journal of Fluids and Structures

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“…A feasible mechanical mass-spring passive control system was also designed to reduce the global vibrations of the three continuous central spans of the twin-box-girder RioNiteroi Bridge [29]. This solution for the dynamic behaviour of the Rio-Niteroi Bridge allows reduction of the vertical displacements of the central span of the bridge, which are induced by sustained transverse wind velocities up to 60 km/h that occur very often in the region of the Guanabara Bay.…”

Section: Steel Bridgesmentioning

confidence: 99%