Impact of Road Profile when Detecting a Localised Damage from Bridge Acceleration Response to a Moving Vehicle

Abstract:

Previous work by the authors have shown that the acceleration response of a damaged beam subject to a constant moving load can be assumed to be made up of three components: ‘dynamic’, ‘static’ and ‘damage’. Therefore, appropriate filtering of the acceleration signal can be used to highlight the ‘damage’ component and quantify its severity. This paper builds on these findings to examine if the same approach can be used to identify damage in the more realistic case of a bridge loaded by a sprung vehicle travelling on a road profile. The consideration of a road profile has the effect of exciting the vehicle modes of vibration which will corrupt the spectrum of bridge accelerations with road/vehicle frequencies. Some of these vehicle frequencies may be lower than the first frequency of the bridge and close to the frequency of the ‘damage’ component. In the latter, the vehicle frequencies are difficult to remove without also filtering part of the ‘damage’ component out. As a result, the approach is shown to perform best for low vehicle speeds.

• Periodical: Key Engineering Materials (Volumes 569-570)
• Pages: 199-206
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.569-570.199
• Online since: July 2013
• Authors: David Hester, Arturo González
• Keywords: Bridge, Damage, Moving Vehicle, Road Profile

References

[1] X.Q. Zhu, S.S. Law, Wavelet-based crack identification of bridge beam from operational deflection time history, International Journal of Solids and Structures, 43: 7 (2006) 2299-2317.

DOI: 10.1016/j.ijsolstr.2005.07.024

[2] D. Hester, A. González, A wavelet-based damage detection algorithm based on bridge acceleration response to a vehicle. Mechanical Systems and Signal Processing, 28 (2011) 145-166.

DOI: 10.1016/j.ymssp.2011.06.007

[3] J. Meredith, A. González, D. Hester, Empirical mode decomposition of the acceleration response of a prismatic beam subject to a moving load to identify multiple damage locations, Shock and Vibration, 19: 5 (2012) 845-856.

DOI: 10.1155/2012/804590

[4] A. Gonzalez, D. Hester, An investigation into the acceleration response of a damaged beam-type structure to a moving load. Journal of Sound and Vibration, (2013) in press.

[5] F. Yang, G.A. Fonder, An iterative solution method for dynamic response of bridge–vehicles systems, Earthquake engineering & structural dynamics, 25: 2 (1996) 195-215.

DOI: 10.1002/(sici)1096-9845(199602)25:2<195::aid-eqe547>3.0.co;2-r

[6] M.F. Green, D. Cebon, Dynamic interaction between heavy vehicles and highway bridges. Computers & Structures, 62: 2 (1997) 253-264.

DOI: 10.1016/s0045-7949(96)00198-8

[7] Standardisation, I.O. f., Mechnical vibration-road surface profiles - reporting of Measure data (ISO 8608 (BS7853: 1996), (1995).

[8] D. Cebon, Handbook of vehicle-road interaction, Netherlands: Swets & Zeitlinger, (1999).

[9] A. González, Development of a Bridge Weigh-In-Motion System: LAP Lambert Academic Publishing AG & Co KG, 456 pages, (2010).