Vibration analysis and structural identification of a curved multi-span viaduct

Benedettini, F.; Dilena, Michele; Morassi, Antonino

doi:10.1016/j.ymssp.2014.08.008

Cited by 25 publications

(8 citation statements)

References 46 publications

(46 reference statements)

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“…Seven papers dealing with modal analysis, identification, and/or damage characterization of real structures, with also meaningful experimental contents, are a well-deserved tribute to Francesco's research outcomes [14][15][16][17][18] in this more applicationoriented area.…”

Section: Identification and Monitoring Of Structuresmentioning

confidence: 99%

“…Indeed, resuming the earlier attention paid to dynamic identification problems [13], he provided updated contributions on experimental modal analysis in operational conditions [14], on damage identification paralleled with model updating [15], and on monitoring the dynamical properties of a great variety of bridges [16,17] and other important structures subjected to ambient vibrations, including traffic and earthquakes [18]. As a matter of fact, in this broad area he was also the chairman of the International Operational Modal Analysis Conference (IOMAC) since 2013.…”

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confidence: 99%

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Nonlinear dynamics, identification and monitoring of structures: a special issue dedicated to the memory of Francesco Benedettini

Luongo

Rega

2016

Meccanica

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Francesco contributed meaningful and well recognized research on nonlinear vibrations of systems and structures for nearly 30 years, masterly using the combination of advanced techniques-analytical, computational, geometrical, and experimentalneeded to carefully detect and reliably characterize a variety of nonlinear and complex dynamic phenomena possibly occurring in different engineering areas.Within this general framework, Francesco's constant interest, among many others, was devoted to the finite amplitude oscillations of elastic monodimensional systems with initial curvature (suspended cables and arches). At first, upon obtaining suitable reduced order models of the underlying partial differential equations, he developed involved highorder multiple time scale solutions of the ensuing ordinary equations, which allowed to highlight the effects of quadratic and cubic nonlinearities under different external and internal resonance conditions [1][2][3]. Yet, grasping the increasing importance of bifurcation and chaos phenomena, he was soon among the first to implement advanced numerical and geometrical techniques for the analysis, prediction and diagnosis of bifurcation events in structural dynamics [4,5], while at the same time starting a meaningful (and indeed earlier) activity of experimental nonlinear dynamics on a variety of flexible mechanical models [6][7][8][9] with the aim to crossvalidate theoretically observed phenomena via sophisticated techniques of reconstruction of their physical response [10][11][12].

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Section: Identification and Monitoring Of Structuresmentioning

confidence: 99%

mentioning

confidence: 99%

Nonlinear dynamics, identification and monitoring of structures: a special issue dedicated to the memory of Francesco Benedettini

Luongo

Rega

2016

Meccanica

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“…In general, when the observation time is short, typically when only an identification of the dynamic characteristics is the priority, two different techniques are available depending on known prior input. The first case is the experimental modal analysis (EMA) [23,24] for which the dynamic behavior of the structure is investigated after the application of a known exciting force. This methodology is rarely used because it is more demanding (and more expensive).…”

Section: Introductionmentioning

confidence: 99%

A Genetic Algorithm Procedure for the Automatic Updating of FEM Based on Ambient Vibration Tests

Bianconi

Salachoris

Clementi

et al. 2020

Sensors

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The dynamic identification of the modal parameters of a structure, in order to gain control of its functionality under operating conditions, is currently under discussion from a scientific and technical point of views. The experimental observations obtained through structural health monitoring (SHM) are a useful calibration reference of numerical models (NMs). In this paper, the procedures for the identification of modal parameters in historical bell towers using a stochastic subspace identification (SSI) algorithm are presented. Then, NMs are manually calibrated on the identification’s results. Finally, the applicability of a genetic algorithm for the automatic calibration of the elastic parameters is considered with the aim of searching for the properties of the autochthonous material, in order to reduce modelling error following the model assurance criterion (MAC). In this regard, several material values on the same model are examined to see how to approach the evolution and the distribution of these features, comparing the characterization proposed by the genetic algorithm with the results considered by the manual iterative procedure.

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“…At present, dynamic technology plays an important role in the bridge detection. The measurement of the structural response, namely the natural frequency, vibration mode and damping factor, reflects the true structural state of the bridge [10][11][12]. The static load test can be used to measure the strain and deflection generated under load, and then compared with the theoretical value to obtain the technical status such as the bridge's true bearing capacity [13,14].…”

Section: Introductionmentioning

confidence: 99%

Analysis for Dynamic and Static Load Test of Prestressed Concrete Simply Supported Bridge

Qian¹

2020

EESRJ

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Considering a great number of newly built bridges at home and abroad, this paper aims to study how to effectively check the technical status such as construction quality, and bearing capacity etc. of the prestressed concrete simply supported bridges using the dynamic and static load tests. First, the finite element calculation was conducted to simulate various construction conditions of the bridge and calculate the actual bridge's bearing capacity. Then, taking Yanxi Bridge as an example, the authors carried out dynamic and static load tests and finite element theoretical calculations to analyze the deflection and strain of the bridge structure during the static load test, as well as the frequency, damping and patterns obtained from the dynamic load test. As a result, the bridge quality was reasonably evaluated. The analysis results show that the bearing capacity and structural rigidity of the bridge meet the design requirements. The research findings shall provide references for the completion acceptance of other bridges.

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Vibration analysis and structural identification of a curved multi-span viaduct

Cited by 25 publications

References 46 publications

Nonlinear dynamics, identification and monitoring of structures: a special issue dedicated to the memory of Francesco Benedettini

Nonlinear dynamics, identification and monitoring of structures: a special issue dedicated to the memory of Francesco Benedettini

A Genetic Algorithm Procedure for the Automatic Updating of FEM Based on Ambient Vibration Tests

Analysis for Dynamic and Static Load Test of Prestressed Concrete Simply Supported Bridge

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