scholarly journals Experimental investigation of exterior reinforced concrete beam - column joints strengthened with hybrid FRP laminates

2021 ◽  
Vol 73 (04) ◽  
pp. 365-379
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Valuable Insight ◽  
Joint Region ◽  
Reinforced Polymer ◽  
Hybrid Fibre ◽  
Seismic Force ◽  
Fibre Reinforced Polymer ◽  
Insight Into

In the present study, an experimental and theoretical investigation is carried out on the reinforced concrete exterior beam-column joints strengthened with the hybrid fibre reinforced polymer (HFRP). The effect of reversible distress that develops in the joint region due to seismic force is determined experimentally by applying reverse cyclic loading on the tip of the beam. In theoretical analysis, the shear strength of strengthened joints was determined, and satisfactory correlations with experimental results were established. Hence, the proposed physical model provides valuable insight into the strength behaviour of the joints.

Study on size effect of fibre reinforced polymer retrofitted reinforced concrete beam–column connections under cyclic loading

2013 ◽  
Vol 40 (4) ◽  
pp. 353-360 ◽  
Author(s):  
A.M. Choudhury ◽  
S.K. Deb ◽  
A. Dutta
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Size Effect ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Technical Literature ◽  
Reinforced Polymer ◽  
Reliable Assessment ◽  
Fibre Reinforced Polymer ◽  
Ultimate Load Carrying Capacity

Studies related to size effect are crucial for reliable assessment of behaviour of structural components subjected to dynamic loadings. The available theories of material behaviour that predict size effects are receiving increasing attention in the technical literature nowadays. This paper presents a study on size effect of fibre reinforced polymer retrofitted reinforced concrete beam–column connections based on experimental investigation under displacement controlled cyclic loading. Three different sizes of geometrically similar specimens have been considered to explore the possible existence of size effect. It was observed that the experimental results corroborate closely the size effect law proposed by Bazănt in all the cases studied. A parameter, energy dissipation of specimens per unit volume was introduced and its correlations with different drift angles for different sizes of the specimen exhibit the existence of size effect. Comparisons were also made among the tests results of control and retrofitted specimens in terms of gain in ultimate load carrying capacity and existence of size effect was distinctly observed.

Simulation Behavior of Flexure in Reinforced Concrete Beam with Opening Reinforced with Glass Fiber Reinforced Polymer (GFRP)

2016 ◽  
Vol 857 ◽  
pp. 421-425
Author(s):  
Saif M. Thabet ◽  
S.A. Osman
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Glass Fiber ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced

This paper presents an investigation into the flexural behaviour of reinforced concrete beam with opening reinforced with two different materials i.e., steel and Glass Fiber Reinforced Polymer (GFRP). Comparison study between the two different materials were carried out and presented in this study through non-linear Finite Element Method (FEM) using the commercial ABAQUS 6.10 software package. The performance of the opening beam reinforced with GFRP is influenced by several key parameters. Simulation analyses were carried out to determine the behavior of beam with opening subjected to monotonic loading. The main parameters considered in this study are size of opening and reinforcement diameter. The results show that GFRP give 23%-29% more ductility than steel reinforcement. The result also shows when the size of opening change from 200mm to 150mm or from 150mm to 100mm the ultimate load capacity increase by 15%. In general, good agreement between the Finite Element (FE) simulation and the available experimental result has been obtained.

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