Precast RC Wall Panels with Cut-out Openings Retrofitted by FRP Composites

Demeter, Istvan; Nagy-György, Tamás; Valeriu, Stoian; Dăescu, Cosmin; Dan, Daniel

doi:10.2749/222137809796088585

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…The high tensile strength and performance of fibers used, carbon fiber-reinforced polymers (CFRP) laminates were used to investigate the efficiency of the flexure and shear strengthening of reinforced concrete elements. According to Demeter et al (2010), the methodology of the retrofit schemes aimed to: (1) offer flexural capacity along the edges, (2) to provide confinement effect and (3) to increase the shear capacity of the wall, especially at the wall base. In this section, ten retrofitted walls were studied [R-SW4 (1-4) and R-SW8 (1-6)].…”

Section: Strengthening Schemes Methodologymentioning

confidence: 99%

Strengthening of reinforced concrete shear walls with openings using carbon fiber-reinforced polymers

Husain

Eisa

Hegazy

2019

Int J Adv Struct Eng

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Reinforced 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 placement of staircases, windows, doors and elevators. Making openings in existing shear wall decrease the overall structural capacity and integrity of the wall, in addition to stress concentrations around the openings. This necessitates the strengthening of the opening rim with FRP wraps. This paper focuses on developing a 3D high-reliability dynamic nonlinear finite element model on ABAQUS theory manual and users' manual, version 6.10 (2010) to simulate the behavior of shear walls with openings strengthened with FRP wraps to investigate their seismic response under the monotonic loads. The proposed FE model has been validated using previous experimental data in literature. The FE results indicated that the proposed configuration of CFRP laminates substantially increases the lateral load strength and deformation capacity of the shear wall with openings and also improves the ductility and energy dissipation of the shear wall.

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Section: Strengthening Schemes Methodologymentioning

confidence: 99%

Strengthening of reinforced concrete shear walls with openings using carbon fiber-reinforced polymers

Husain

Eisa

Hegazy

2019

Int J Adv Struct Eng

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Effect of FRP Strengthening on the Behavior of Shear Walls with Opening

Asfa

Mostofinejad

Abdoli

2011

Advances in FRP Composites in Civil Engineering

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In recent decades, Fiber Reinforced Polymer (FRP) strengthening of concrete members is known as a unanimously acceptable method. An example of a proper application of this method is strengthening of shear walls with openings using FRP strips around them, especially at corners with high stress concentration, where FRP strips keep cracks closed and prevent brittle shear failure to the edges. The efficiency of FRP strengthening on shear walls and around the openings was examined in the current study using finite element (FE) software (ABAQUS). Available laboratory test results on concrete shear walls under lateral loads were used to calibrate the software and verify its application. Then, boundaries of the openings in the wall strengthened with FRP composites in different configurations and nonlinearly were analysed. The results showed considerable effectiveness of FRP strengthening on the overall behaviour of the walls with opening.

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