Cross‐sectional and confining system unification on peak compressive strength of FRP confined concrete

• Autor(a) principal: Shayanfar, Javad
• Data de Publicação: 2022
• Outros Autores: Barros, Joaquim A. O., Rezazadeh, Mohammadali
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: https://hdl.handle.net/1822/81919
• topic: FRP-confined concrete; Partial confinement; Peak compressive strength; Square crosssection; Unified model; Engenharia e Tecnologia::Engenharia Civil; Science & Technology

Despite the many axial confinement models already proposed for the determination of the peak compressive strength of fiber-reinforced polymer (FRP) confined concrete columns, they are, in general, applicable only to concrete columns of circular or square cross-section, with full or partial confinement arrangements. In this study, by proposing a cross-sectional and confining system unification approach, a new model is developed and calibrated based on a large test database. For the generalization of the cross-section and FRP-based confinement arrangement, the concept of confinement efficiency factor with a unified mathematical framework is adopted. By simulating experimental tests and comparing to the predictions of existing confinement models, the developed one demonstrates a very high reliability and suitable for design purposes by balancing the simplicity of the usage and accuracy