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A computational plastic-damage method for modeling the FRP strengthening of concrete arches

Ahmadpour, T ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.24200/sci.2019.21357
  3. Publisher: Sharif University of Technology , 2019
  4. Abstract:
  5. In this paper, a computational technique is presented based on a concrete plastic-damage model to investigate the effect of FRP strengthening of reinforced concrete arches. A plastic-damage model was utilized to capture the behavior of concrete. The interface between the FRP and concrete was modeled using a cohesive fracture model. In order to validate the accuracy of the damage-plastic model, a single element was employed under monotonic tension, monotonic compression, and cyclic tension loads. An excellent agreement was observed between the predefined strain-stress curve and that obtained by the numerical model. Furthermore, the accuracy of the cohesive fracture model was investigated by comparing the numerical results with those of experimental data. Finally, in order to verify the accuracy of the proposed computational algorithm, the results were compared with the experimental data obtained through two tests conducted on reinforced concrete arches strengthened with FRP. ©2019 Sharif University of Technology. All rights reserved
  6. Keywords:
  7. Concrete arches ; Plastic-damage model ; Arches ; Concrete construction ; Fracture ; Cohesive fracture model ; Computational algorithm ; Computational technique ; FRP retrofitting ; FRP strengthening ; Numerical results ; Plastic-damage models ; Strain stress curve ; Reinforced concrete ; Accuracy assessment ; Concrete ; Damage ; Methodology ; Model validation ; Numerical model ; Plastic
  8. Source: Scientia Iranica ; Volume 26, Issue 4A , 2019 , Pages 2123-2132 ; 10263098 (ISSN)
  9. URL: http://scientiairanica.sharif.edu/article_21357.html