Evaluation of bridge maintenance interventions under changing deterioration rates: a Markovian-based methodology

Markovian transition probability matrices employing condition states are often used in bridge management systems to determine optimal intervention strategies. This approach assumes a constant deterioration matrix throughout the entire analysis period. However, in order to adequately model and evaluate intervention options such as fiber-reinforced polymer (FRP) strengthening, it is necessary to model the impact of the intervention on the deterioration rate. This paper presents a Markovian based approach to model interventions that impact deteriorating rates. A model employing this approach is proposed. A methodology to determine the optimal intervention strategy based on steady state probabilities is then presented. The proposed model and methodology are illustrated in an evaluation of intervention options for a concrete girder bridge.

• Authors:
  • Fernando, D
  • Wan, B
  • Walbridge, S
• Conference:
  • Concrete Institute of Australia Conference, 26th, 2013, Gold Coast, Queensland, Australia
• Publication Date: 2013-10

Language

• English

Media Info

• Pagination: 10p
• Monograph Title: Concrete 2013: understanding concrete: 16-18 October 2013, Gold Coast, Queensland, Australia

Subject/Index Terms

• TRT Terms: Beams; Bridge management systems; Bridges; Concrete; Deterioration; Fibers; Maintenance; Mathematical models; Polymers
• Uncontrolled Terms: Fibre reinforced polymer
• ATRI Terms: Beam; Bridge maintenance; Bridge management; Concrete; Deterioration; Modelling
• ITRD Terms: 3471: Reinforcement (in mater)
• Subject Areas: Bridges and other structures; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01514730
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Feb 20 2014 10:15AM