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Behaviour of Rc Circular Columns Confined by GFRP Spirals and Hoops Under Simulated Seismic Loading
This paper presents the experimental results of two full-scale circular reinforced concrete (RC) columns. The column specimens had a diameter of 350 mm and a shear span of 1,750 mm. Both specimens were reinforced longitudinally and transversely with GFRP reinforcement. The GFRP transverse reinforcement was provided in the form of spirals for one specimen and circular hoops, with lap splice length equals to 40 times its cross-sectional diameter, for the other specimen. The transverse reinforcement had a pitch of 85 mm, satisfying a specific requirement of the Canadian code for FRP-RC columns of one-fourth the column’s gross diameter. Longitudinal reinforcement of the columns was provided as six No. 16 GFRP bars. All specimens were tested under a combination of simulated seismic loading and constant axial loading (equal to 20% of axial load carrying capacity of the GFRP-RC column). The results showed that the specimen reinforced with GFRP circular hoops achieved similar lateral load resistance to the spirally reinforced specimen. However, limited deformability was provided by GFRP circular hoops due to its insufficient lap splice length.
Behaviour of Rc Circular Columns Confined by GFRP Spirals and Hoops Under Simulated Seismic Loading
This paper presents the experimental results of two full-scale circular reinforced concrete (RC) columns. The column specimens had a diameter of 350 mm and a shear span of 1,750 mm. Both specimens were reinforced longitudinally and transversely with GFRP reinforcement. The GFRP transverse reinforcement was provided in the form of spirals for one specimen and circular hoops, with lap splice length equals to 40 times its cross-sectional diameter, for the other specimen. The transverse reinforcement had a pitch of 85 mm, satisfying a specific requirement of the Canadian code for FRP-RC columns of one-fourth the column’s gross diameter. Longitudinal reinforcement of the columns was provided as six No. 16 GFRP bars. All specimens were tested under a combination of simulated seismic loading and constant axial loading (equal to 20% of axial load carrying capacity of the GFRP-RC column). The results showed that the specimen reinforced with GFRP circular hoops achieved similar lateral load resistance to the spirally reinforced specimen. However, limited deformability was provided by GFRP circular hoops due to its insufficient lap splice length.
Behaviour of Rc Circular Columns Confined by GFRP Spirals and Hoops Under Simulated Seismic Loading
Lecture Notes in Civil Engineering
Benmokrane, Brahim (editor) / Mohamed, Khaled (editor) / Farghaly, Ahmed (editor) / Mohamed, Hamdy (editor) / Abdallah, Amr E. M. (author) / El-Salakawy, Ehab F. (author)
8th International Conference on Advanced Composite Materials in Bridges and Structures ; Chapter: 31 ; 269-274
2022-09-27
6 pages
Article/Chapter (Book)
Electronic Resource
English
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