Strengthening of reinforced concrete shear walls with openings using carbon fiber‑reinforced polymers
Subject Areas : Structural Mechanics
Keywords: Shear wall · Openings · 3D numerical analysis · Strengthening · CFRP · Ductility,
Abstract :
AbstractReinforced concrete shear walls are one of the most widely used lateral load structural resisting elements in high rise buildings.Introducing openings in existing shear walls may be due to remodeling or municipality considerations, such as placementof staircases, windows, doors and elevators. Making openings in existing shear wall decrease the overall structural capacityand integrity of the wall, in addition to stress concentrations around the openings. This necessitates the strengthening of theopening rim with FRP wraps. This paper focuses on developing a 3D high-reliability dynamic nonlinear finite element modelon ABAQUS theory manual and users’ manual, version 6.10 (2010) to simulate the behavior of shear walls with openingsstrengthened with FRP wraps to investigate their seismic response under the monotonic loads. The proposed FE model hasbeen validated using previous experimental data in literature. The FE results indicated that the proposed configuration ofCFRP laminates substantially increases the lateral load strength and deformation capacity of the shear wall with openingsand also improves the ductility and energy dissipation of the shear wall.Keywords