Risk Based Decision Making for Bridge under Multi Hazard


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The bridges are of much importance to the transportation network system, as they connect key highways at crucial nodes. This paper reviews and discussed risk-based methodologies to assess the risk acceptability and cost-effectiveness of protective measures for bridge under multiple manmade or natural hazards. Three risk acceptance criteria based on fatality risks, failure probabilities and net benefit assessment were described and discussed. The decision support framework accompanying these risk acceptance criteria considers hazard probabilities, value of human life, physical and indirect damages, risk reduction and protective measure costs were studied and an illustrative example was presented.



Edited by:

Paul P. Lin and Chunliang Zhang




Z. Z. Wang and Y. X. Zhang, "Risk Based Decision Making for Bridge under Multi Hazard", Applied Mechanics and Materials, Vols. 105-107, pp. 1215-1219, 2012

Online since:

September 2011




[1] GAO. Highway Infrastructure: Federal Efforts to Strengthen Security Should be Better Coordinated and Targeted on the Nation's Most Critical Highway Infrastructure, United States Government Accountability Office, Washington, DC, January (2009).

[2] National Transportation Safety Board. Highway Accident Report-Collapse of I-35W Highway Bridge [R]. NTSB/HAR-08/03, Washington D C, November 14, (2008).

[3] Stewart, M. G. Structural Reliability in Encyclopedia of Quantitative Risk Assessment and Analysis [M]. Wiley Chichester, UK, 2008: 1712-1715.

[4] DRD291. Reliability-based classification of the load carrying capacity of existing bridges [R]. Denmark Guideline Document, (2004).

[5] D Asprone, F Jalayer, A Prota, G Manfredi. Proposal of a probabilistic model for multi-hazard risk assessment of structures [J]. Structural Safety, 2010(32): 25-34.

DOI: https://doi.org/10.1016/j.strusafe.2009.04.002

[6] Mark G. Stewart. Acceptable Risk Criteria for Infrastructure Protection [J]. International Journal of Protective Structures, 2010(1): 23-40.

[7] AASHTO. (1991) Guide specification and commentary for vessel collision design of highway bridges., Washington, D. C.

[8] ISO 2394. General Principles on Reliability for Structures, International Organization for Standardization [M] Geneva, (1998).

[9] Melchers R E. On the ALARP Approach to Risk Management [J]. Reliability Engineering and System Safety, 2001. 71: 201-208.

DOI: https://doi.org/10.1016/s0951-8320(00)00096-x

[10] Mastaglio L. Bridge Bashing [J]. Civil Engineering, 2007, 67(4): 38-40.

[11] Proske D, Curbach M. Risk to Historical Bridges Due to Ship Impact on German Inland Waterways [J]. Reliability Engineering and System Safety, 2005, 90(3): 261-270.

DOI: https://doi.org/10.1016/j.ress.2004.10.003