A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of Concrete Strength on GFRP-RC Circular Columns Under Simulated Seismic Loading
Fibre-reinforced polymers (FRPs) were introduced to reinforced concrete (RC) structures as a substitute to conventional steel reinforcement due to, mainly, their non-corrodible nature. The need for independent code provisions for FRP-RC members has aroused as FRP has many differences compared to steel. For instance, FRP exhibits a linear elastic behavior of FRP without yielding plateau with lower strain capacity and different compressive and shear strengths compared to steel reinforcement. These differences affect the behaviour of FRP-RC members. Columns, for example, can be significantly affected by presence of FRP as it directly affects confinement behaviour. Moreover, if the structure is located in active seismic zone, drift capacity increases and energy dissipation decreases significantly by the use of FRP reinforcement. The available experimental data for FRP-RC columns under seismic loading, especially those constructed with high-strength concrete, is very limited. This paper presents the experimental results for two full-scale GFRP-RC circular columns cast and tested under simulated seismic loading accompanied by axial loading. The specimens had a diameter of 350 mm and a shear span equals to 1,750 mm. Both columns were reinforced with GFRP longitudinal bars with a reinforcement ratio of 1.2%, and a 50-mm spiral pitch. The main test parameter was concrete compressive strength of the columns, which varied between 35 and 85 MPa. The results showed that for well-confined GFRP-RC circular columns, the seismic response is not significantly affected by variation of concrete compressive strength.
Effect of Concrete Strength on GFRP-RC Circular Columns Under Simulated Seismic Loading
Fibre-reinforced polymers (FRPs) were introduced to reinforced concrete (RC) structures as a substitute to conventional steel reinforcement due to, mainly, their non-corrodible nature. The need for independent code provisions for FRP-RC members has aroused as FRP has many differences compared to steel. For instance, FRP exhibits a linear elastic behavior of FRP without yielding plateau with lower strain capacity and different compressive and shear strengths compared to steel reinforcement. These differences affect the behaviour of FRP-RC members. Columns, for example, can be significantly affected by presence of FRP as it directly affects confinement behaviour. Moreover, if the structure is located in active seismic zone, drift capacity increases and energy dissipation decreases significantly by the use of FRP reinforcement. The available experimental data for FRP-RC columns under seismic loading, especially those constructed with high-strength concrete, is very limited. This paper presents the experimental results for two full-scale GFRP-RC circular columns cast and tested under simulated seismic loading accompanied by axial loading. The specimens had a diameter of 350 mm and a shear span equals to 1,750 mm. Both columns were reinforced with GFRP longitudinal bars with a reinforcement ratio of 1.2%, and a 50-mm spiral pitch. The main test parameter was concrete compressive strength of the columns, which varied between 35 and 85 MPa. The results showed that for well-confined GFRP-RC circular columns, the seismic response is not significantly affected by variation of concrete compressive strength.
Effect of Concrete Strength on GFRP-RC Circular Columns Under Simulated Seismic Loading
Lecture Notes in Civil Engineering
Walbridge, Scott (editor) / Nik-Bakht, Mazdak (editor) / Ng, Kelvin Tsun Wai (editor) / Shome, Manas (editor) / Alam, M. Shahria (editor) / El Damatty, Ashraf (editor) / Lovegrove, Gordon (editor) / Abdallah, A. (author) / El-Salakawy, E. (author)
Canadian Society of Civil Engineering Annual Conference ; 2021
Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 ; Chapter: 11 ; 127-133
2022-06-17
7 pages
Article/Chapter (Book)
Electronic Resource
English
Circular High-Strength Concrete Columns under Simulated Seismic Loading
| British Library Online Contents | 1999
TECHNICAL PAPERS - Circular High-Strength Concrete Columns under Simulated Seismic Loading
| Online Contents | 1999
Effect of aspect ration on the behavior of GFRP-RC circular columns under simulated seismic loading
| TIBKAT | 2021