Strain distribution on reinforcement of concrete beams reinforced with glass fiber reinforced polymer (GFRP) bars

摘要

This paper presents a part of the results from an experimental study of strain distributionon reinforcement of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars.Under static loading conditions, eight concrete beams reinforced with GFRP bars were tested and ascomparison eight beams with steel reinforcement were also tested. All of the beams were preparedwith varying ratios of longitudinal reinforcement bars and stirrups. The effect of shear spaneffectivedepth ratio on strain distribution of longitudinal reinforcement was also observed.Furthermore, the behavior of strain on stirrups due to different materials of longitudinalreinforcement was also discussed in this report. The test results show that the ratio of longitudinalreinforcement significantly influence the strain distributions on reinforcement where the beams withhigher ratio exhibit higher strain. Moreover, it was also obtained that the different types oflongitudinal reinforcement considerably influences the strain behavior on stirrups as higher strainwas observed in beams reinforced with GFRP bars.