Simulation of corroded RC structures using a three-dimensional irregular lattice model

Kunhwi Kim, John E. Bolander, Yun Mook Lim

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Deteriorative effects of steel corrosion on the structural response of reinforced concrete are simulated for varying degrees of corrosion. The simulation approach is based on a three-dimensional irregular lattice model of the bulk concrete, in which fracture is modeled using a crack band approach that conserves fracture energy. Frame elements and bond link elements represent the reinforcing steel and its interface with the concrete, respectively. Polylinear stress-slip properties of the link elements are determined, for several degrees of corrosion, through comparisons with direct pullout tests reported in the literature. The link properties are then used for the lattice modeling of reinforced concrete beams with similar degrees of corrosion of the main reinforcing steel. The model is successful in simulating several important effects of steel corrosion, including increased deflections, changes in flexural cracking behavior, and reduced yield load of the beam specimens.

Original languageEnglish
Pages (from-to)645-662
Number of pages18
JournalStructural Engineering and Mechanics
Volume41
Issue number5
DOIs
Publication statusPublished - 2012 Mar 10

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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