Wind-Tunnel Tests of a Bridge Model with Active Vibration Control

Hansen, Henriette I.; Thoft‐Christensen, Palle; Mendes, Paulo de Sousa; Branco, Fernando A.

doi:10.2749/101686600780481239

Cited by 10 publications

(9 citation statements)

References 2 publications

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“…Although their width is 139 mm, the flaps on each side of the girder are only adding 2x120 mm to the extended bridge width B, since they are partially incorporated within the deck structure. This means that the effective flap width is 24% of the core deck width B (without flaps), a value that is comparable to the 25% of Hansen et al [5] and Kobayashi et al [3] as can be deduced from Table I.…”

Section: Flaps and Deck Anchoringsupporting

confidence: 78%

“…Because of the relatively simple structure, it is well suited for testing new concepts [9]. Furthermore, all the previous experimental works presented in Section I investigating bridge flutter control using flaps [2][3][4][5][6][7][8] have leveraged this type of set-up.…”

Section: Experimental Set-upmentioning

confidence: 99%

“…The ribs and spars are permanently riveted together, while the coating panels are screwed on so that the interior remains accessible. The characteristics of the bridge section model, as well as corresponding parameters for the set-ups of Hansen et al [5] and Kobayashi et al [3], are given in Table I. The total mass, m, includes the mass of the deck and flaps (14.1 kg) and the support structure (7.4 kg); it corresponds to the minimum weight, which can easily be altered by adding equipment or dummy masses.…”

Section: B Bridge Section Modelmentioning

confidence: 99%

“…1. Furthermore, Hansen et al [4,5] bridge deck capable of stabilizing the bridge vibrations, with actively controlled flaps attached to the deck.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A novel bridge section model endowed with actively controlled flap arrays mitigating wind impact

Boberg

Feltrin

Martinoli

2015

2015 IEEE International Conference on Robotics and Automation (ICRA)

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Abstract-In this work, we present the SmartBridge, a novel bridge section model equipped with actively controlled arrays of flaps aiming at mitigating wind-induced vibrations of longspan bridges. The active model, as well as its support structure, is described in detail and the key design choices are motivated. Finally, the capabilities of the system and the active control of the bridge section model with moving flaps was validated by wind tunnel experiments. In spite of the relative simplicity of a, manually tuned, control law, the results are encouraging and show a significant damping of the pitch vibration of the deck.

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Section: Flaps and Deck Anchoringsupporting

confidence: 78%

Section: Experimental Set-upmentioning

confidence: 99%

Section: B Bridge Section Modelmentioning

confidence: 99%

“…1. Furthermore, Hansen et al [4,5] bridge deck capable of stabilizing the bridge vibrations, with actively controlled flaps attached to the deck.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A novel bridge section model endowed with actively controlled flap arrays mitigating wind impact

Boberg

Feltrin

Martinoli

2015

2015 IEEE International Conference on Robotics and Automation (ICRA)

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show abstract

“…1. Moreover, Hansen et al [4,5] flaps attached to the deck. More recently, Zhao et al [6] designed a controlled deck capable of suppressing flutter and buffeting.…”

Section: Introductionmentioning

confidence: 99%

Flutter suppression of a bridge section model endowed with actively controlled flap arrays

Boberg

Feltrin

Martinoli

2015

2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)

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Abstract-In this work, we investigate active flutter control of a bridge section model equipped with arrays of flaps. We consider three simple control algorithms based on an amplitudegain and a phase-shift for actuating the flaps and stabilizing the section model. We have leveraged a linear analytical model of the structural and aeroelastic forces during flutter in order to find efficient control parameters. The proposed solution was validated with wind tunnel experiments, where all the algorithms showed capable of suppressing flutter, and the most efficient one was using all of the flaps on the deck.

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Active flap control of long suspension bridges

Hansen

Thoft‐Christensen

2001

J. Struct. Control

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This article is an extended summary of a Ph.D. Thesis, see (Hansen, 1998). In the thesis theoretical and experimental effects of flap control on a bridge section are compared. Dynamics of long suspension bridges is summarized with special attention on the flutter phenomenom. The aerodynamic derivatives for a flat plate with flaps are derived based on the Theodorsen theory. Estimation of the flutter wind velocity is shown when both the Theodorsen method and the Air Material Command method are used. Three control algorithms are described, namely Classical Linear Optimal closed‐loop control, Instantaneous Optimal closed‐loop control and control with constant phase angles between the motion of the bridge section and the flap motions. Wind tunnel experiments are described and the experimental data are analysed. Finally the results of the wind tunnel experiments are compared to the theory.

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Wind-Tunnel Tests of a Bridge Model with Active Vibration Control

Cited by 10 publications

References 2 publications

A novel bridge section model endowed with actively controlled flap arrays mitigating wind impact

A novel bridge section model endowed with actively controlled flap arrays mitigating wind impact

Flutter suppression of a bridge section model endowed with actively controlled flap arrays

Active flap control of long suspension bridges

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