Modeling of RC shear walls strengthened with ultra-high performance fiber reinforced concrete (UHPFRC) jackets

摘要: Abstract Reinforced concrete (RC) shear walls are considered one of the main lateral resisting members in RC buildings. Recently, ultra-high performance fiber reinforced (UHPFRC) is an advanced cement composite material, which characterized by high tensile and compressive strength, ductility, durability fracture toughness. Nevertheless, while extensive studies have shown superior mechanical UHPFRC at material scale, there remain very few on application for retrofit/strengthening structural elements especially under loading like earthquake. This paper numerically analyzed behavior strengthened a (R-UHPFRC) jacketing using two-dimensional (2D) model bond stress-slip was incorporated to analysis simulate interfacial concrete-to-concrete bond. First, subjected investigated proposed 2D model. Validation done available experimental results. The validated utilized study R-UHPFRC loading. It stated that strengthening procedure improved diagonal tension strength reference weak wall. Finally, effectiveness performing comparison with outcomes numerical wall external CFRP sheets literature.