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Title: | Optimization of life-cycle maintenance of deteriorating bridges with respect to expected annual system failure rate and expected cumulative cost |
Authors: | Barone, Giorgio Frangopol, Dan M. Soliman, Mohamed |
Keywords: | Optimization Life-cycle management Inspection and maintenance planning Deteriorating structures Failure rate Uncertainties |
Issue Date: | 2014 |
Publisher: | © American Society of Civil Engineers (ASCE) |
Citation: | BARONE, G., FRANGOPOL, D.M. and SOLIMAN, M., 2014. Optimization of life-cycle maintenance of deteriorating bridges with respect to expected annual system failure rate and expected cumulative cost. Journal of Structural Engineering, 140 (2), 04013043. |
Abstract: | Civil infrastructure systems are subjected to progressive deterioration resulting from multiple
mechanical and environmental stressors. This deterioration process is developed under
uncertainties related to load effects, structural resistance, and inspection outcomes, among
others. In this context, life-cycle optimization techniques provide a rational approach to
manage these systems considering uncertainties as well as several budgetary and safety
constraints. This paper proposes a novel optimization procedure for life-cycle inspection and
maintenance planning of aging structures. In this procedure, the structural system effects are
accounted for by modeling the structure as a series, parallel, or a series-parallel system whose
components are subjected to time-dependent deterioration phenomena. Different possible
repair options are considered depending on the damage state and the outcomes of each
inspection. For each component, essential or preventive maintenance aiming at reducing the
system failure rate, are performed when inspection results indicate that the prescribed
threshold damage levels have been reached or violated. Otherwise, no repair is performed.
Optimum inspection and maintenance plans are formulated by minimizing both the expected
system failure rate and expected cumulative inspection and maintenance cost over the lifecycle
of the structure. The proposed approach is applied to an existing bridge. |
Description: | This is the author’s version of a work that was accepted for publication in Journal of Structural Engineering. A definitive version was subsequently published at: http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000812 |
Version: | Accepted for publication |
DOI: | 10.1061/(ASCE)ST.1943-541X.0000812 |
URI: | https://dspace.lboro.ac.uk/2134/16760 |
Publisher Link: | http://dx.doi.org/10.1061/(ASCE)ST.1943-541X.0000812 |
ISSN: | 0733-9445 |
Appears in Collections: | Published Articles (Architecture, Building and Civil Engineering)
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