Fault tree analysis method for deterioration of timber bridges using an Australian case study

Lokuge, Weena and Gamage, Nirdosha and Setunge, Sujeeva (2016) Fault tree analysis method for deterioration of timber bridges using an Australian case study. Built Environment Project and Asset, 6 (3). pp. 332-344. ISSN 2044-124X

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Deterioration of timber bridges can often be related to a number of deficiencies in the bridge elements, connectors and or as a result of been in aggressive environments which they are exposed to. The maintenance cost of timber bridges is affected significantly by a number of deterioration mechanisms which require a systematic approach for diagnosis and treatment. Evaluating the risk of failure of these bridges is of importance in bridge performance assessment and decision making to optimize rehabilitation options.

Design/ methodology/ approach:
This paper identifies common causes for timber bridge deterioration and demonstrates an integrated approach based on fault tree analysis (FTA) to obtain qualitative or quantitative estimation of the risk of failure of timber bridge sub-systems. Level 2 inspection report for a timber bridge in Queensland, Australia has been utilized as a case study in this research to identify the failure modes of the bridge.

Originality/ value:
A diagnostic tool for timber bridge deterioration will benefit asset inspectors, managers, and engineers to identify the type, size and the distress mechanisms in order to recognize the proper corrective measures either to prevent or to reduce further deterioration. Timber bridge maintenance is a major issue in Queensland, Australia. The proposed framework can benefit road authorities and local councils.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Accepted version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 17 Oct 2016 05:56
Last Modified: 17 Oct 2016 05:56
Uncontrolled Keywords: timber bridges, deterioration, fault tree analysis, evaluation, preventive maintenance, road structures
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090505 Infrastructure Engineering and Asset Management
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1108/BEPAM-01-2016-0001
URI: http://eprints.usq.edu.au/id/eprint/29853

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