Operational Modal Test of an Arch Bridge

Xin Zhang; Xiu Li Du

doi:10.4028/www.scientific.net/AMR.446-449.3233

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 446-449Operational Modal Test of an Arch Bridge

Operational Modal Test of an Arch Bridge

Abstract:

A modal test was carried out on a 120m span concrete filled steel tubular arch bridge under operational conditions. The moving traffic load is considered as uncorrelated white noises at various points of the road surface and the test is of the type of multi-input multi-output (MIMO). The modal parameters are identified by Global Rational Fraction Polynomials (GRFP) method, a frequency domain method. In order to taking the mobile nature of the traffic load into consideration, a multi-input NExT method is utilized to retrieve the frequency response function needed by GRFP. A proof of the NExT method in the case of multi-input case is also provided in this paper.

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Periodical:

Advanced Materials Research (Volumes 446-449)

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3233-3238

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.446-449.3233

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Online since:

January 2012

Authors:

Xin Zhang, Xiu Li Du

Keywords:

Bridge, Health Monitoring, Modal Testing, NExT, Vibration

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References

[1] H George, I James, GP Thomas, JP Lauffer, "The Natural Excitation Technique (NExT) for Modal Parameter Extraction From Operating Wind Turbines", SANDIA REPORT SAND 92– 1666 l UC–261, February 1993.

Google Scholar

[2] H Void, GF Rocklin, "The Numerical Implementation of a Multi-Input Modal Estimation Method for Mini-Computers," International Modal Analysis Conference Proceedings, November 1982.

Google Scholar

[3] JN Juang. and RS Pappa., J. of Guidance, Control, and Dynamics, Vol. 8, Sept.-Oct., 1985, pp.620-627.

Google Scholar

[4] MH Richardson, DL Formenti., Proc. of 1st Inter. Modal Analysis Conf. Orlando, FL, USA. 1982, pp.167-181.

Google Scholar

[5] MH Richardson, DL Formenti, Proc. of 3rd Inter. Modal Analysis Conf. Orland, FL, USA, 1985, pp.390-397.

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[6] MH Richardson, Proc. of 4th Inter. Modal Analysis Conf. Los Angeles, CA, USA, 1986, pp.465-470. a: Vertical Mode b: Rotational Mode Figure 5 Identified Mode Shapes of the Bridge Table 1. Modal Testing Results of the Bridge Mode No. Frequency(Hz) Damping Ratio(%) Type of Mode 1 1.68 1.07 Vertical 2 1.85 0.76 Rotational 3 2.02 1 Vertical 4 2.29 0.57 Rotational 5 2.87 0.8 Vertical 6 3.16 0.78 Rotational 7 3.63 1 Vertical 8 4.08 0.67 Rotational

DOI: 10.24200/sci.2021.56842.4939

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