Seismic Behavior of Exterior GFRP-RC Beam–Column Connections: Analytical Study

Ghomi, Shervin K.; El-Salakawy, Ehab

doi:10.1061/(asce)cc.1943-5614.0000858

Cited by 31 publications

(10 citation statements)

References 12 publications

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“…Five full scale column beam joints were tested under seismic loading and the results indicated the feasibility of using GFRP bars and stirrups as internal reinforcement in beam column joints. Moreover, similar studies [3,4] indicate that concrete frames reinforced with GFRP are able to withstand significant lateral displacement. Aliasghar-Mamaghani et al [5] suggest that frames reinforced with GFRP bars show higher strength than frames reinforced with steel bars under seismic loads.…”

Section: Introductionmentioning

confidence: 63%

Experimental testing of medium scale GFRP reinforced concrete frames

et al. 2019

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Fibre reinforced polymers (FRP) have been used as strengthening for existing RC structures for many decades. Lately, there has been a lot of interest in using FRP as internal reinforcement in beams, slabs and columns. One potential area of application could be reinforced concrete frames internally reinforced with GFRP bars. With limited research in this direction, the objective of this publication is to assess the behaviour of glass FRP (GFRP) reinforced concrete frames under reversed cyclic lateral in plane loading and to analyse the seismic performances of such elements. For the purpose of this paper, experimental testing of two 1/3 scaled down frames is conducted in displacement-controlled mode with the loading history according to ACI 374.1-05. The control sample is reinforced with conventional steel reinforcement and the results obtained are compared with the sample reinforced with GFRP bars. In summary, observations on the sample behaviour at specified drift ratio such as load-displacement behaviour, envelope curves and energy dissipation are presented.

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Section: Introductionmentioning

confidence: 63%

Experimental testing of medium scale GFRP reinforced concrete frames

et al. 2019

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“…The model was established for steel-reinforced elements. To make this model suitable for elements reinforced with GFRP bars and stirrups, which have lower moduli of elasticity than steel reinforcement, an equivalent area of GFRP stirrups was used as recommended in [25].…”

Section: Materials Modelingmentioning

confidence: 99%

Behavior of Hybrid Steel/GFRP Reinforced Columns Under Lateral Cyclic Loading: a Numerical Study

Arafa

Shoeib

Dandrawy

2021

Sohag Engineering Journal

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This paper proposed hybrid (steel/glass fiber-reinforced polymer (GFRP) composites) bars as primary reinforcement for modern reinforced concrete (RC) columns. A detailed two-dimensional finite element model (2D FEM), that considers material and geometric nonlinearity and the bond behavior of steel and glass FRP (GFRP) reinforcement, was created, and validated against the available experimental results. The built model predicted the experimentally obtained results representing in failure mode and deformation response with good accuracy. Hybrid system that consists of steel/GFRP combination was then studied. The results patently showed that hybrid reinforced columns can undergo large displacement with minimal damage. This; however, can be guaranteed through carefully selection of reinforcement arrangement.

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“…Structural elements are sensitive to brittle collapse in this region and are unable to achieve extreme strength capability. In comparison, the rising axial load of columns in steel-RC samples did not show a substantial effect on the envelope of lateral load drift relation of the joints [19,20]. Furthermore, M. Hasaballa and E. El-Salakawy [21] analyzed the external shear strength of the RC beam-column joint with GFRP reinforcement, and the results indicated that the overall joint shear stress must be reduced to avoid joint damage [21].…”

Section: Introductionmentioning

confidence: 97%

“…In addition, it was concluded that increasing the beam reinforcement ratio can enhance the ability of the joint to dissipate the seismic energy through utilizing the inelastic behavior of concrete. Ghomi and El-Salakawy [19,20] investigated the seismic behavior of the RC beam-column joints with GFRP reinforcement. It was inferred that the axial load level of the columns greatly affects the earthquake's behavior of the RC beam-column joints with GFRP reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Structural Concrete Frames with Hybrid Reinforcement under Cyclic Loading

Sobhy

Nour

Hassan

et al. 2021

Frattura Ed Integrità Strutturale

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A substantial amount of work was carried out on the use of fiber-reinforced polymer (FRP) in reinforcing concrete structural elements, which demonstrated considerable inelasticity or deformity through monotonous and fatigue loads. Even so, the action of FRP bars in FRP-RC columns and frame structures has not yet been studied during reversed cyclic loading. In this research, reversed cyclic loading was conducted on three beam-column joint models using the finite element method with ANSYS software. The first model was for a joint designed with steel rebar for both the longitudinal reinforcement and stirrups. Glass fiber reinforced polymer (GFRP) rebar was used to reinforced the second joint model for both longitudinal reinforcement and steel stirrups, and the third joint model was designed with hybrid steel/GFRP reinforcement for the longitudinal reinforcement and steel stirrups. The performance of the three models under reversed cyclic loading, such as load vs. story drift and energy dissipation capacity, were compared. The GFRP-reinforced model displayed a predominantly elastic activity up to failure. Although its energy dissipation was weak, its performance in terms of total storey drift demand was satisfactory.

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Seismic Behavior of Exterior GFRP-RC Beam–Column Connections: Analytical Study

Cited by 31 publications

References 12 publications

Experimental testing of medium scale GFRP reinforced concrete frames

Experimental testing of medium scale GFRP reinforced concrete frames

Behavior of Hybrid Steel/GFRP Reinforced Columns Under Lateral Cyclic Loading: a Numerical Study

Behavior of Structural Concrete Frames with Hybrid Reinforcement under Cyclic Loading

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