A Markovian-based methodology for the life-cycle cost analysis of bridge maintenance interventions under changing deterioration rates

Fernando D, Walbridge S, Wan B

Research output: Contribution to journalArticlepeer-review

Abstract

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. In addition, decisions to carry out interventions are normally based on deterioration to predefined condition states, which are generally not linked to structural safety. However, in order to adequately model and evaluate certain intervention options, such as fiber-reinforced polymer (FRP) strengthening, it is necessary to model the impact of the intervention on the deterioration rate, as well as the safety of the structure. This paper presents a Markovian approach to model interventions that impact deteriorating rates. A model employing this approach is proposed, which also accounts for the safety of the structure. A simplified methodology to determine the optimal intervention strategy based on steady state probabilities is also presented. The proposed model and methodology are illustrated in a hypothetical bridge example, where one of the interventions is FRP strengthening of a concrete girder bridge.
Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalJournal of Civil Engineering Inter Disciplinaries
Volume1
Issue number1
Early online date6 May 2020
DOIs
Publication statusE-pub ahead of print - 6 May 2020

Keywords

  • Changing Deterioration Rates
  • Markov chains
  • Bridge Maintenance Interventions
  • Optimal Intervention Strategies
  • Life-cycle Cost Analysis

Fingerprint

Dive into the research topics of 'A Markovian-based methodology for the life-cycle cost analysis of bridge maintenance interventions under changing deterioration rates'. Together they form a unique fingerprint.

Cite this