A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Experimental and analytical behavior of short concrete columns reinforced with GFRP bars under eccentric loading
HighlightsConcrete columns reinforced with GFRP bars were tested under eccentric load.Compressive behavior of GFRP bars and level of strain in the bars were evaluated.An analytical model was developed to predict the behavior of the test specimens.A new test method was proposed for testing GFRP bars in compression.It was concluded that GFRP bars can be considered as compression reinforcement.
AbstractThis paper presents experimental and analytical studies on short concrete columns reinforced with glass fiber-reinforced polymer (GFRP) towards characterizing compressive behavior GFRP bars. The experimental program consisted of fourteen 500mm-long specimens with a square cross-section (150×150mm) including nine GFRP reinforced (6#5) and five plain concrete specimens. The specimens were tested under concentric and eccentric compressive load up to failure. Three eccentricity to width ratios of 0.1, 0.2, and 0.3 were considered, where the eccentricities applied symmetrically at both ends of simply supported columns. The experimental program showed no crushing of GFRP bars at peak load and the corresponding strain did not reach 50% of their crushing capacity obtained from material test. In addition, an analytical model was developed and verified against the experimental test data. The model considered both material nonlinearity and geometrical nonlinearity. Using the model, a parametric study was performed on the effect of eccentricity, reinforcement ratio, and concrete strength, which confirmed the capability of GFRP bars to sustain high strains without reaching the compressive strain capacity of the bars. The study showed that GFRP bars can be considered as load bearing longitudinal reinforcement of concrete columns and ignoring their effect is not necessary.
Experimental and analytical behavior of short concrete columns reinforced with GFRP bars under eccentric loading
HighlightsConcrete columns reinforced with GFRP bars were tested under eccentric load.Compressive behavior of GFRP bars and level of strain in the bars were evaluated.An analytical model was developed to predict the behavior of the test specimens.A new test method was proposed for testing GFRP bars in compression.It was concluded that GFRP bars can be considered as compression reinforcement.
AbstractThis paper presents experimental and analytical studies on short concrete columns reinforced with glass fiber-reinforced polymer (GFRP) towards characterizing compressive behavior GFRP bars. The experimental program consisted of fourteen 500mm-long specimens with a square cross-section (150×150mm) including nine GFRP reinforced (6#5) and five plain concrete specimens. The specimens were tested under concentric and eccentric compressive load up to failure. Three eccentricity to width ratios of 0.1, 0.2, and 0.3 were considered, where the eccentricities applied symmetrically at both ends of simply supported columns. The experimental program showed no crushing of GFRP bars at peak load and the corresponding strain did not reach 50% of their crushing capacity obtained from material test. In addition, an analytical model was developed and verified against the experimental test data. The model considered both material nonlinearity and geometrical nonlinearity. Using the model, a parametric study was performed on the effect of eccentricity, reinforcement ratio, and concrete strength, which confirmed the capability of GFRP bars to sustain high strains without reaching the compressive strain capacity of the bars. The study showed that GFRP bars can be considered as load bearing longitudinal reinforcement of concrete columns and ignoring their effect is not necessary.
Experimental and analytical behavior of short concrete columns reinforced with GFRP bars under eccentric loading
Khorramian, Koosha (author) / Sadeghian, Pedram (author)
Engineering Structures ; 151 ; 761-773
2017-08-28
13 pages
Article (Journal)
Electronic Resource
English
Design of GFRP-reinforced rectangular concrete columns under eccentric axial loading
| Online Contents | 2017