Abstract
After the construction of a bridge, different problem could arise demanding for an evaluation of the structural performances. In case of a complex structure, the use of a numerical model without an experimental validation is strongly discouraged.
Accordingly to the previous considerations, a correct roadmap is described in this paper, by analyzing the dynamical characteristics of a complex bridge whose skew deck is supported by 18 cables suspended by a twin-arches frame. Because of the skew configuration, the two upstream and downstream arches are not symmetric. The bridge is 110 m long and 14.80 m wide. The cross-section consists of two longitudinal steel girders surmounted by a reinforced concrete slab. The deck is suspended from two steel arches having a circular cross section and a maximum sag of 28 m. The suspending cables are anchored to the steel girders and to the arches.
Dynamic tests were conducted in operational conditions to estimate the dynamic properties. Up to the first 20 vibration modes were identified. Additional impulsive tests were carried out to identify the frequencies of the cables. The numerical part of the investigation involved the determination of a FE model and the application of model updating procedures in order to enhance the correlation between experimental and numerical results.
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References
Alaggio R, Benedettini F, Dilena M, Morassi A (2012) The Valle Castellana twin-arch bridge: dynamical tests, identification, seismic performances. In: Proceedings of IMAC XXXI, Garden Grove
Benedettini F, Gentile C (2011) Operational modal testing and FE model tuning of a cable-stayed bridge. Eng Struct 33:2063–2073
Cerri MN, Ruta GC (2004) Detection of localized damage in plane circular arch by frequency data. J Sound Vib 270:39–59
Cerri MN, Vestroni F (2003) Identification of damage due to open cracks by change of measured frequencies. In: Proceedings of XVI conference of Italian association of theoretical and applied mechanics (AIMETA), Ferrara, CD ROM
Aktan AE, Farhey DN, Helmicki AJ, Brown DL, Hunt VJ, Lee K-L, Levi A (1997) Structural identification for condition assessment: experimental arts. ASCE J Struct Eng 123(2):1674–1684
Magalhaes F, Cunha A (2011) Explaining operational modal analysis with data from an arch bridge. Mech Syst Signal Process 25:1431–1450
Brincker R, Zhang L, Andersen P (2001) Modal identification of output-only systems using frequency domain decomposition. Smart Mater Struct 10:441
Peeters B, De Roeck G (1999) Reference-based stochastic subspace identification for output-only modal analysis. MSSP 13(6):855–878
ARTeMIS Extractor software ver.3.2 (2002) Issued by structural vibration solution ApS, NOVI Science Park, Aalgorg East
MACEC Modal Analysis on Civil Engineering Constructions v. 3.2 (2011) Issued by Katholieke Universiteit Leuven, Department of Civil Engineering, Belgium
Benedettini F, Eusani F (2012) Frequency domain and stochastic subspace identification methods in civil engineering applications. In: International symposium MS12 on stochastic mechanics, Ustica
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Alaggio, R., Benedettini, F., Dilena, M., Morassi, A. (2014). Modal and Structural Identification of a Skew, Cable Stayed, Arch Bridge. In: Catbas, F. (eds) Dynamics of Civil Structures, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-04546-7_39
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DOI: https://doi.org/10.1007/978-3-319-04546-7_39
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