Structural Engineering and Mechanics

  • 제41권5호
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  • Pages.645-662
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  • 2012
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

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

  • Kim, Kunhwi (Department of Civil & Environmental Engineering, Yonsei University) ;
  • Bolander, John E. (Department of Civil & Environmental Engineering, University of California) ;
  • Lim, Yun Mook (Department of Civil & Environmental Engineering, Yonsei University)
  • 투고 : 2011.09.22
  • 심사 : 2012.02.02
  • 발행 : 2012.03.10
⟨ 이전 논문 다음 논문 ⟩

초록

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.

키워드

참고문헌

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피인용 문헌

  1. Validation of three-dimensional irregular lattice model for concrete failure mode simulations under impact loads vol.169, 2017, https://doi.org/10.1016/j.engfracmech.2016.11.007
  2. Symptom-based reliability analyses and performance assessment of corroded reinforced concrete structures vol.53, pp.6, 2015, https://doi.org/10.12989/sem.2015.53.6.1183
  3. Modeling of fiber-reinforced cement composites: Discrete representation of fiber pullout vol.51, pp.10, 2014, https://doi.org/10.1016/j.ijsolstr.2014.02.006
  4. Estimation of internal corrosion degree from observed surface cracking of concrete using mesoscale simulation with Model Predictive Control vol.36, pp.5, 2012, https://doi.org/10.1111/mice.12620