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Effect of Lateral Reinforcement Spacing on Cyclic Loaded GFRP-Reinforced Concrete Columns
For an earthquake-resistant structure, the inelastic response which provides ductility is the important aspect of maintaining the strength of the structure under seismic loads. To ensure ductile behavior, the column should have adequate confinement reinforcement in the region of the plastic hinge. The available design codes specify the special confinement ratio for the moment-resisting structure in the region of the plastic hinge. However, there is a lack of information concerning the performance of Fiber Reinforced Polymer (FRP)-reinforced concrete columns subjected to lateral reversal loads. Thus, this paper presents the results of an experimental study on the Glass FRP (GFRP)-reinforced concrete column under simulated seismic load. The investigation includes testing of two full-scale rectangular columns of 400 mm X 400 mm cross-sectional dimension with an effective height of 1650 mm with different spacing of the transverse reinforcement (100 mm and 150 mm). The two columns were tested under quasi-static reversed cyclic loading with constant compression axial load until failure which was indicated by the crushing of longitudinal reinforcement in compression and damage to core concrete. The confinement behavior of the GFRP spirals and ties was analyzed from the hysteresis response which clearly shows the acceptable level of deformation with no strength degradation for the well-confined column.
Effect of Lateral Reinforcement Spacing on Cyclic Loaded GFRP-Reinforced Concrete Columns
For an earthquake-resistant structure, the inelastic response which provides ductility is the important aspect of maintaining the strength of the structure under seismic loads. To ensure ductile behavior, the column should have adequate confinement reinforcement in the region of the plastic hinge. The available design codes specify the special confinement ratio for the moment-resisting structure in the region of the plastic hinge. However, there is a lack of information concerning the performance of Fiber Reinforced Polymer (FRP)-reinforced concrete columns subjected to lateral reversal loads. Thus, this paper presents the results of an experimental study on the Glass FRP (GFRP)-reinforced concrete column under simulated seismic load. The investigation includes testing of two full-scale rectangular columns of 400 mm X 400 mm cross-sectional dimension with an effective height of 1650 mm with different spacing of the transverse reinforcement (100 mm and 150 mm). The two columns were tested under quasi-static reversed cyclic loading with constant compression axial load until failure which was indicated by the crushing of longitudinal reinforcement in compression and damage to core concrete. The confinement behavior of the GFRP spirals and ties was analyzed from the hysteresis response which clearly shows the acceptable level of deformation with no strength degradation for the well-confined column.
Effect of Lateral Reinforcement Spacing on Cyclic Loaded GFRP-Reinforced Concrete Columns
Lecture Notes in Civil Engineering
Benmokrane, Brahim (editor) / Mohamed, Khaled (editor) / Farghaly, Ahmed (editor) / Mohamed, Hamdy (editor) / Prajapati, Girish Narayan (author) / Farghaly, Ahmed (author) / Benmokrane, Brahim (author)
8th International Conference on Advanced Composite Materials in Bridges and Structures ; Chapter: 20 ; 171-178
2022-09-27
8 pages
Article/Chapter (Book)
Electronic Resource
English
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