Stochastic modeling of deterioration and time-variant performance of reinforced concrete structures under joint effects of earthquakes, corrosion, and asr

Gaofeng Jia, Paolo Gardoni, David Trejo, Vandad Mazarei

Research output: Contribution to journalArticlepeer-review

Abstract

To assess the time-variant performance of RC structures, it is important to model the various deterioration processes as well as their interactions in addition to the associated uncertainties. Besides earthquakes and corrosion, RC structures can also be subject to deterioration due to alkali-silica reaction (ASR), which could impact the corrosion process. This paper develops a novel deterioration model for RC structures that captures the joint effects of deterioration due to earthquakes, corrosion, and ASR. The model is constructed using a novel stochastic formulation that captures the interaction of different deterioration mechanisms by modeling deterioration as both age/time and state dependent. The developed deterioration model is then used to estimate the time-variant seismic fragility and reliability of an example RC bridge. The impacts of interactions between deterioration processes on the time-variant performance are investigated in detail under different earthquake occurrence rates, different levels of ASR, and different levels of interactions. The results highlight the importance of incorporating different deterioration processes and their interactions when estimating the time-variant performances of RC structures.

Original languageEnglish (US)
Article number0002884
JournalJournal of Structural Engineering (United States)
Volume147
Issue number2
DOIs
StatePublished - Feb 1 2021

Keywords

  • Alkali-silica reaction
  • Corrosion
  • Earthquake damage
  • Reinforced concrete structures
  • Stochastic deterioration model

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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