Experimental study and calculation of shear capacity of FRP-reinforced concrete short beams
To analyze the quantitative effect of parameters such as beam height,shear-span ratio,and web re-inforcement ratio on the shear capacity of fiber reinforced polymer(FRP)reinforced concrete short beams,and to verify the rationality of the calculation method of shear capacity proposed on the basis of tie-arch model in the early stage,shear failure tests were conducted on 11 basalt FRP reinforced concrete short beams,with a maximum beam height of 1.2 m.The experimental results indicate that beam height,shear-span ratio,hori-zontal and vertical web reinforcement ratio have a significant effect on the shear capacity of FRP reinforced concrete short beams.When the beam height increases from 300 mm to 1 200 mm,the non-dimensional ulti-mate shear strength of the test beam decreases by 46.7％.When the horizontal reinforcement ratio increases from 0 to 1.0％,the non-dimensional ultimate shear strength of the test beam increases by 40.5％.The shear capacity calculation formula proposed by tie-arch model can reasonably reflect the influence laws of factors such as beam height,shear-span ratio,and horizontal web reinforcement ratio.The calculation results are bet-ter consistent with the results of this experiment and collected experimental data.
concrete short beamsfiber reinforced polymer(FRP)barsshear capacitycalculation methodtie-arch model
万方数据
维普
