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Monitoring timber beam bridge structural reliability in regional Australia

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Abstract

There are many thousands of timber beam bridges throughout regional Australia, which are monitored primarily by visual inspection. Experience gained from historical failures has led to the clear realisation that visual inspection at intervals of many months or years is insufficient to identify potential failure caused by overloading and biological degradation. A bridge overloaded today can fail tomorrow and there is a need to implement structural health monitoring (SHM) so that the incidence of overloading can be identified soon after it occurs. This need is becoming more vital with the increased expectation to cater for the increased loads during periods of transporting seasonal produce. The measurement mid-span displacement of girders can be used to determine safety indices for the evaluation of structural safety. The detection of real-time damage in timber girder bridges by the use of high-speed camera and laser-based methods offer unique advantages and can lead to low cost measurement techniques. This work reports on the use of continuous monitoring methods for determining the structural reliability of timber-beam bridge girders. Some applications of the use of laser-based displacement sensing systems are discussed in relation to the monitoring of the structural reliability of two older timber beam bridges in regional New South Wales, Australia. Experimental and analytical approaches are presented and used to demonstrate that the probability of failure can be readily determined on a continuous basis using an SHM system.

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References

  1. Stellitano C (2004) Team works together to quickly repair Delaware Bridge. Roads and bridges. Scranton Gillette Communications, USA

    Google Scholar 

  2. Chajes MJ, Mertz DR, Roecker H, Milius J (2003) Fracture analysis and retrofit design for the I-95 bridge over the Brandywine River. Recent developments in bridge engineering. pp 205–220

  3. Quiel S (2003) Forensic analysis of the steel girder fracture in the I-95 Brandywine River Bridge. Research Experience for Undergraduates Report. University of Notre Dame

  4. Sousa HS, Sørensen JD, Kirkegaard PH, Branco JM, Lourenço PB (2013) On the use of NDT data for reliability-based assessment of existing timber structures. Eng Struct 56:298–311

    Article  Google Scholar 

  5. QDMR. Timber Bridge Maintenance Manual. 2005. Queensland Government, Department of Main Roads, Brisbane, Australia.

  6. Howard J (2009) Road asset benchmarking project 2008, timber bridge management report. IPWEA (NSW) Roads & Transport Directorate, Springwood, N. S. W, Australia

  7. RTA: Timber Bridge Management. 2002, Sydney, Australia: Roads and Traffic Authority of NSW.

  8. Moore JC, Mahini S, Glencross-Grant R, Patterson R (2012) Regional timber bridge girder reliability: structural health monitoring and reliability strategies. Advances in structural engineering, 15(5)

  9. RMS 2006. National heavy vehicle reform. http://www.rms.nsw.gov.au/documents/projects/western-nsw/katoomba-lithgow/heavyveh-mass0706.pdf. Accessed 28 Sept 2016

  10. Standards Australia (2010) Australian standard timber structures. In: AS 1720.1 Part 1: design methods. Sydney, Standards Australia

  11. Standards Australia (2004) Australian standard bridge design. In: AS 5100.1 Part 2: design loads. Standards Australia, Sydney

  12. Roorda J (2006) Road asset benchmarking project, timber bridge management. IPWEA (NSW) Roads and Transport Directorate, Springwood, N.S.W., Australia

  13. Chan TH, Wong K, Li Z, Ni Y (2011) Structural health monitoring for long-span bridges—Hong Kong experience and continuing onto Australia. In: Chan T, Thambiratnam D (eds) Structural health monitoring in Australia. Nova Science Publishers Inc, New York

    Google Scholar 

  14. Worden K, Farrar C, Manson G, Park G (2007) The fundamental axioms of structural health monitoring. Proceedings of the royal society, vol 463, pp 1639–1664

  15. Crews K, Samali B, Li J (2004) Reliable assessment of aged timber bridges using dynamic procedures. World congress of timber engineering, WCTE 2004: Lahti, Finland

  16. Samali B, Choi FC, Li J, Crews K (2007a) Experimental investigations on a laboratory timber bridge using damage index method for plate like structures. 5th Australasian congress on applied mechanics, ACAM 2007, Brisbane, Australia

  17. Samali B, Li J, Crews K (2007b) Load rating of impaired bridges using a dynamic method. Electronic J Struct Eng. special issue, 66–75

  18. Samali B, Crews K, Li J, Bakoss S, Champion C (2002) Assessing the load carrying capacity of timber bridges using dynamic methods. NSW IPWEA state conference, Coffs Harbour

  19. Brebbia C, Tottenham H, Warburton G, Wilson J, Wilson R (1985) Vibrations of engineering structures. Springer, Berlin

    Book  MATH  Google Scholar 

  20. Moore JC (2009) Monitoring timber beam bridges for structural health. MSc Research Thesis, School of Environmental and Rural Science, University of New England (UNE)

  21. Moore JC, Glencross-Grant R, Patterson R (2010) A review of non-destructive test methods: appropriate choice of a method for use with timber beam bridge girders. Proceedings of world congress of timber engineering, Italy

  22. Moore JC, Mahini S, Glencross-Grant R, Patterson. Recording timber bridge girder deflections using a laser reference source and a high speed camera. 5th international conference on structural health monitoring of intelligent infrastructure (SHMII-5), December 11–15 2011 Cancun, Mexico. Published on-line by ISHMII

  23. Mahini S, Glencross-Grant R, Moore JC (2011) Structural health monitoring of older bridges: current studies in Australia and worldwide. International public works conference, August 21–24 Canberra. Published on line by IPWEA

  24. Moore JC (2013). Monitoring the health of timber bridge beams. PhD research thesis, University of New England (UNE), Armidale, NSW, Australia

  25. Allan, P (1895) Timber bridge construction in New South Wales. Journal and Proceedings of the Royal Society of New South Wales 1895:29

  26. Burr AH, Cheatham JB (1995) Mechanical analysis and design. Prentice Hall, New Jersey

    Google Scholar 

  27. Melchers RE (1999) Structural reliability analysis and prediction. Wiley, Chichester

    Google Scholar 

  28. Elishakoff I (2004) Safety factors and reliability: friends or foes?. Kluwer Academic Publishers, Berlin

    Book  Google Scholar 

  29. Moore JC, Mahini SS, Glencross-Grant R, Patterson RA (2013) Structural health monitoring of older timber bridge girders using laser-based techniques. Australian J Struct Eng 14:27–42

    Article  Google Scholar 

  30. Moore JC, Mahini S, Glencross-Grant R, Patterson R (2012a) The prediction of timber bridge girder strength. 25th ARRB conference, shaping the future. Perth

  31. RTA 2008. Timber Bridge Manual. In: Bridge engineering—engineering technology branch (ed.). Roads and traffic authority of NSW

  32. Computers and Structures Inc (2010) Static and dynamic finite element analysis of structures, SAP2000®. Educational 14.2.4 edn. Computers and Structures Inc, Berkley

  33. Mufti A (2001) Guidelines for structural health monitoring. Manitoba, Winnipeg

    Google Scholar 

  34. Gere JM, Timoshenko SP (1991) Mechanics of materials, South Melbourne, VIC 3205. Chapman & Hall Australia, Thomas Nelson

    Google Scholar 

  35. Gere JM, Goodno BJ (2009) Mechanics of materials. Printed in Canada, CENGAGE Learning

    Google Scholar 

  36. Crews K (2005) Making sense of risk management for timber bridges. The Australian small bridges conference, powerhouse museum. Sydney, Hallmark

  37. RTA 2007. Bridge inspection procedure manual. 2nd ed. Roads And Traffic Authority of New South Wales

  38. Wolfram, J.: Structural Safety and Reliability ed. Thompson, P. 2004: Heriot-Watt, University, Edinburgh.

  39. Kumamoto H, Henley EJ (1996) Probabilistic risk assessment and management for engineers and scientists. IEEE Press, Wiley

    Google Scholar 

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Acknowledgments

Funding for this PhD research project was provided by Forest and Wood Products Australia (FWPA). This industry support is gratefully acknowledged.

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Authors and Affiliations

  1. University of New England, Armidale, NSW, Australia

    Seyed Saeed Mahini, John C. Moore & Rex Glencross-Grant

Authors
  1. Seyed Saeed Mahini
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  2. John C. Moore
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  3. Rex Glencross-Grant
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Correspondence to Seyed Saeed Mahini.

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Mahini, S.S., Moore, J.C. & Glencross-Grant, R. Monitoring timber beam bridge structural reliability in regional Australia. J Civil Struct Health Monit 6, 751–761 (2016). https://doi.org/10.1007/s13349-016-0195-2

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  • DOI: https://doi.org/10.1007/s13349-016-0195-2

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