Optimization of Life-Cycle Maintenance of Deteriorating Bridges with Respect to Expected Annual System Failure Rate and Expected Cumulative Cost

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 and 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 life-cycle of the structure. The proposed approach is applied to an existing bridge.

• Record URL:
  • https://doi.org/10.1061/(ASCE)ST.1943-541X.0000812
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
• Supplemental Notes:
  • © 2014 American Society of Civil Engineers.
• Authors:
  • Barone, Giorgio
  • Frangopol, Dan M
  • Soliman, Mohamed
• Publication Date: 2014-2

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 04013043
• Serial:
  • Journal of Structural Engineering
  • Volume: 140
  • Issue Number: 2
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9445
  • Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

• TRT Terms: Bridges; Costs; Deterioration; Failure; Inspection; Life cycle analysis; Maintenance; Optimization
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; I60: Maintenance;

Filing Info

• Accession Number: 01515824
• Record Type: Publication
• Files: TRIS, ASCE
• Created Date: Feb 25 2014 9:15AM