Control of the bridge span vibration with high coefficient passive damper. Theoretical consideration and application

Żółtowski, Krzysztof; Banaś, Anna; Binczyk, Mikołaj; Kalitowski, Przemysław

doi:10.1016/j.engstruct.2021.113781

Cited by 8 publications

(3 citation statements)

References 57 publications

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“…Saber et al (23) compare the retrofit of a footbridge experiencing frequency variations over time and under walking pedestrians with semi-active and classical passive dynamic vibration absorbers. Zoltowski et al (24) present the structural modification of a pedestrian drawbridge to raise its fundamental bending frequency to a level where pedestrian action has a low influence by introducing a high coefficient passive damper.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling and vibration serviceability assessment of a steel footbridge with a significant 3D dynamic behaviour

Roda-Casanova

Hernández-Figueirido

Sancho-Bru

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper focuses on the vibration serviceability assessment and numerical modelling of an existing steel truss footbridge located in the outskirts of Castellón, Spain. The footbridge is rather slender and composed by a main span and two access ramps supported on three 4-arm piers of different heights. Due to the connection between the main span and the ramps at the top of the tall piers, longitudinal and lateral bending/torsion natural coupled modes of vibration coexist at low frequencies, with a relevant contribution of the piers and access ramps deformation. This leads to a significant three-dimensional and rather complex dynamic response under service conditions. With the aim of characterising the structural dynamic properties and assessing the level of vibrations induced by crossing pedestrians, two in-situ experimental test programmes are conducted. On the one hand, the structural response is measured during several hammer tests and the modal properties are identified and used to update a detailed 3D numerical model by means of a Genetic Algorithm. Due to the lack of information regarding the detailing of the piers foundations, two alternative models are analysed. The relevance of the pier-foundation system rotational stiffness is highlighted for the particular configuration. On the other hand, the footbridge main span response is recorded under different pedestrian activities: walking, running and vandal simulated actions. Finally, the vibration serviceability of the structure is assessed based on current codes and regulations.

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Section: Introductionmentioning

confidence: 99%

Numerical modelling and vibration serviceability assessment of a steel footbridge with a significant 3D dynamic behaviour

Roda-Casanova

Hernández-Figueirido

Sancho-Bru

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…This issue is particularly important in the case of steel footbridges due to the low vibration damping in these structures [1][2][3][4][5][6] and a wide range of frequencies of dynamic impact of runners 𝑓 𝑟 = 2.20 ÷ 3.30 Hz [1,7,8] ( 𝑓 𝑟 -steps frequency during running (running frequency)). In some cases, the excessive vibration could also be excited on steel and composite footbridges characterized by a higher fundamental frequency 𝑓 = 2 𝑓 𝑟 [7].…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of dynamic load models generated by runners on footbridges

2023

Archives of Civil Engineering

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Footbridges, like all building structures, must be designed in a way that ensures their safe and comfortable use. Steel footbridges characterised by low vibration damping often turn out to be a structure susceptible to the dynamic influence of users during various forms of their activity. For these structures, the impact of running users may be a key type of dynamic load for the verification of the serviceability limit state due to vibrations. In the literature, there are several proposals for models of dynamic load generated by runners (models of ground reaction forces -GRF). The paper presents the characteristics, analyses and comparisons of selected GRF load models. The analyses were performed using the GRF recorded during the laboratory tests of runners (tests planned and carried out by the author) and the GRF determined using various load models. In order to illustrate the accuracy of the estimation of the dynamic response of the structure, depending on the GRF model used, dynamic field tests and dynamic numerical analyses of the selected steel footbridge were carried out. The obtained results were analysed and compared.

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“…A few other studies performed FE model calibration techniques of bridges using experimental modal analysis, in which the slave and master stiffness parameters were adjusted by GA and PSO methods [13][14][15][16][17]. Moreover, another example of updating structural behaviours under static loads and dynamics was presented through SOFISTIK for the pedestrian drawbridge across the Motlawa River in the city of Gdansk [18]. A much more detailed discussion of the FE model updating was based on sensitivity analysis [19,20].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Model Updating of RC Bridge Structure with Static Load Testing: A Case Study of Vietnamese ThiThac Bridge in Coastal and Marine Environment

Nguyen

Salamak

Katunin

et al. 2022

Sensors

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Diagnostic load testing refers to the use of the measured historical responses of the structure in the field data to better understand its dynamic and static structural behaviours. It is important and necessary to predict the health state, load capacity, and aging of the structure by updating the finite element (FE) model, which can give useful information to aid the design of retrofits and the maintenance of the existing bridge in the future. The paper presents an update of the full-scale FE model for the reinforced concrete (RC) bridge structure over the seawater river based on the experimental strains under the static load testing in which the representative FE model of the actual structure is determined from the optimisation procedures. The optimisation variables are applied, including the cross-sectional properties and concrete material calibrated through the genetic algorithm (GA) optimisation in the MATLAB software, which interfaces with the FE modelling in the scripting of the SOFISTIK TEDDY software automatically. The bending moments at the mid-span of the RC girders are determined in the FE modelling to compute stresses, which are compared with the measured stresses through optimisation scenarios with a percentage error of the objective function less than 10%. The measured data of concrete strains are recorded from reusable strain transducers installed on the mid-span girders for every bridge span, which are used to calibrate the bridge model in static load testing. The novelty of the solution is to implement innovative techniques using field data as an improved approach for calibrating automatically the analytical FE model parameters of all RC spans of the bridge until its static behaviours are very similar to those of the actual bridge. The final updated FE modelling is used to apply truck load configurations according to bridge design standards such as the AASHTO specifications, which can predict the load limits of the existing bridge structure more accurately and reliably. These proposed approaches can be applied to large bridges as well as complex structures with supporting FE analysis software and data processing software.

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Control of the bridge span vibration with high coefficient passive damper. Theoretical consideration and application

Cited by 8 publications

References 57 publications

Numerical modelling and vibration serviceability assessment of a steel footbridge with a significant 3D dynamic behaviour

Numerical modelling and vibration serviceability assessment of a steel footbridge with a significant 3D dynamic behaviour

Comparative analysis of dynamic load models generated by runners on footbridges

Finite Element Model Updating of RC Bridge Structure with Static Load Testing: A Case Study of Vietnamese ThiThac Bridge in Coastal and Marine Environment

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