南昌工程学院学报2024，Vol.43Issue(1)：65-70,106,7.
钢纤维-GFRP箍筋混凝土梁受剪抗裂性能试验研究
Experimental study on shear-cracking resistance of steel fiber concrete beams reinforced with GFRP stirrups
摘要
Abstract
The incorporation of steel fibers with excellent crack-resistant properties into concrete is an effective approach to solve the problems of insufficient shear crack resistance and excessive deflection on the beams reinforced with fiber rein-forced polymer(FRP)stirrups.The effects of steel fiber volume rates(0.5%,1.0%,1.5%)and shear span ratios(1.5,2.0,3.0)on the shear crack resistance of the test beams are investigated by testing the shear performance of eight concrete beams reinforced with glass fiber polymer composite(GFRP)stirrups.The results show that steel fiber can effectively inhibit the expansion of micro cracks inside the concrete beams reinforced with GFRP stirrups and thus improve their overall stiff-ness and crack resistance.When the shear span ratio is 2.0,the shear-cracking resistance of the test beam with the steel fi-ber volume ratio of 1.5%increases by 38.4%compared with the control beam without steel fibers.With the increase of shear span ratio,the shear crack resistance of the test beams gradually decreases.Based on the experimental data and exist-ing research results,a suggested formula for cracking load of inclined section of steel fiber concrete beams reinforced with FRP stirrups is proposed,and the calculated values of the proposed model are consistent with the experimental values.关键词
钢纤维/GFRP箍筋/剪跨比/开裂剪力Key words
steel fiber/GFRP stirrups/shear span ratio/shear-cracking force分类
建筑与水利引用本文复制引用
王孝平,李文龙,郭生全..钢纤维-GFRP箍筋混凝土梁受剪抗裂性能试验研究[J].南昌工程学院学报,2024,43(1):65-70,106,7.基金项目
安徽省教育厅自然科学研究重点项目(2022AH052823) （2022AH052823）
阜阳师范大学信息工程学院自然科学重点项目(FXG2021ZZ01) （FXG2021ZZ01）
阜阳师范大学信息工程学院青年人才基金重点项目(2022xgrcxm04) （2022xgrcxm04）
阜阳师范大学信息工程学院质量工程重点项目(2022XGJYZD02) （2022XGJYZD02）
