Case study: The Harbor Bridge in Bratislava

Venglár, Michal; Sokol, Milan

doi:10.1002/suco.201900190

Cited by 5 publications

(1 citation statement)

References 16 publications

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“…Ambient vibration data were prepared using the codes for pre-processing and processing (using stochastic subspace identification -SSI), as mentioned in [29]. The data were then used similarly in the ModalVIEW software as in [30].…”

Section: Analyses Of Measured Datamentioning

confidence: 99%

Performance assessment of steel truss railway bridge with curved track

2022

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Non-destructive Structural Health Monitoring techniques can be incorporated into bridge integrity management by assessing structural conditions. This paper describes a performance assessment of a steel truss railway bridge in Bratislava using vibration-based techniques as a further part of maintenance in addition to standard visual inspections. To obtain the necessary data, a multipurpose measuring system was used. Various types of data were measured, e.g. accelerations, strains, and displacements. The advantage of the multipurpose measuring system was that the traffic over the bridge was not restricted, even though the bridge carries only a single curved track. Two test campaigns were conducted to assess the performance of the bridge. One campaign was devoted to measuring ambient vibrations in order to perform the operational modal analysis, and the second was carried out to measure strains and displacements during a train passage. The results show a successful system identification of the structure using ambient vibrations; and a finite element model was verified and validated by a comparison of strains and displacements, as well as by modal parameters. According to the results obtained, the structural health of the investigated bridge was satisfactory.

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Section: Analyses Of Measured Datamentioning

confidence: 99%

Performance assessment of steel truss railway bridge with curved track

2022

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Experimental and theoretical evaluation of axial forces in short steel ropes

Ároch,

Kováč,

Venglár

et al. 2024

ce papers

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Assessing rope force in bridge structural health monitoring, particularly for shorter lengths, poses challenges. The vibration method, commonly utilized for taut strings, yields inaccurate results for short ropes due to neglecting bending stiffness. To address this, the differential equation of lateral vibration of a prismatic beam possessing bending stiffness EI, evenly distributed mass m under the tension force N is solved approximately and numerically using FEM for greater accuracy. Nonlinear fitting via the Gauss‐Newton aids in refining results. Laboratory experiments, varying axial forces and rope characteristics, validated these methods, offering recommendations for improved accuracy.

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