Numerical assessment of FRP retrofitting systems for reinforced concrete elements

• Published in: Engineering structures Vol. 29; no. 8; pp. 1664 - 1675
• Main Authors: Rougier, V.C., Luccioni, B.M.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 01.08.2007; Elsevier
• Subjects: Applied sciences; Building structure; Buildings. Public works; Composites; Computation methods. Tables. Charts; Confinement; Construction (buildings and works); Damage; Durability. Pathology. Repairing. Maintenance; Exact sciences and technology; Fiber reinforced plastic; Flexural reinforcement; Numerical model; Plasticity; Reinforced concrete; Reinforced concrete structure; Repair (reinforcement, strenthening); Retrofitting; Structural analysis. Stresses; Confinement; Composites; Numerical model; Retrofitting; Plasticity; Flexural reinforcement; Damage; Fiber reinforced plastic; Reinforced concrete; Strengthening; Modeling; Composite material; Building functional element; Numerical analysis; Failure analysis; Concrete construction; Example; Fibre reinforced plastics; Numerical simulation; Application
• ISSN: 0141-0296; 1873-7323
• DOI: 10.1016/j.engstruct.2006.09.008

During their service life reinforced concrete structures can be exposed to mechanical loads and aggressive chemical or thermal agents that produce degradation of their mechanical properties. This results in a loss of security and usually requires a prompt repair or retrofitting in order to preserve the structural serviceability. In this case, the aid of a numerical tool for the assessment of different retrofit and repair systems would be valuable. Nowadays, analytical and numerical capacity for the assessment of this type of systems is still limited. A numerical model that can be used for the assessment of retrofit and repair systems based on the use of FRP for reinforced concrete columns and beams is presented in this paper. A plastic damaged model that reproduces the behaviour even under high confinement pressures is used for concrete. Application examples concerning the behaviour of reinforced concrete columns and beams retrofitted with FRP are included in the paper. The comparison with experimental results shows the ability of the proposed model to reproduce the problem simulated.