汪知文1,李碧雄1,游 杨1,廖 桥1,饶 丹2,余 弦2
摘 要:对超高强钢筋HRB500与高延性水泥基复合材料(ECC)矩形截面短柱进行了轴心受压试验,研究了配筋率为1.13%、2.26%的超高强钢筋对ECC应力-应变曲线的影响。结果表明:ECC柱在破坏后依然能保持良好的整体性,且裂缝宽度明显低于普通混凝土柱;超高强钢筋ECC柱的纵向钢筋均达到屈服强度,极限承载力和极限竖向应变均大于普通混凝土试件;超高强钢筋与ECC混凝土之间的协同性明显优于普通混凝土;ECC柱的泊松比随着加载的进行先逐渐变小,然后有一定程度的增加。
Abstract: The axial compression test of HRB500 and ECC rectangular section short column was carried out, and the effect of HRB500 with reinforcement ratio of 1.13% and 2.26% on the stress-strain curve of ECC column was studied. The results show that the ECC column can still maintain good integrity after failure, and the crack width is obviously lower than that of ordinary concrete column. The longitudinal reinforcement of ultra-high strength steel bar ECC column can reach yield strength, and the ultimate bearing capacity and ultimate vertical strain of ECC column are larger than those of ordinary concrete column. The synergy between ultra-high strength steel bar and ECC concrete is obviously better than that of ordinary concrete. The Poisson′s ratio of ECC column gradually decreases as the loading progresses, and then increases to some extent.
汪知文,李碧雄,游杨,等.超高强钢筋ECC柱轴心受压试验研究[J].混凝土与水泥制品,2020(10):51-54.
WANG Z W,LI B X,YOU Y,et al.Experimental Study on Axial Compression of ECC Columns with Ultra-high Strength Reinforced Steel[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):51-54.
超高强钢筋ECC柱轴心受压试验研究
汪知文1,李碧雄1,游 杨1,廖 桥1,饶 丹2,余 弦2
摘 要:对超高强钢筋HRB500与高延性水泥基复合材料(ECC)矩形截面短柱进行了轴心受压试验,研究了配筋率为1.13%、2.26%的超高强钢筋对ECC应力-应变曲线的影响。结果表明:ECC柱在破坏后依然能保持良好的整体性,且裂缝宽度明显低于普通混凝土柱;超高强钢筋ECC柱的纵向钢筋均达到屈服强度,极限承载力和极限竖向应变均大于普通混凝土试件;超高强钢筋与ECC混凝土之间的协同性明显优于普通混凝土;ECC柱的泊松比随着加载的进行先逐渐变小,然后有一定程度的增加。
Abstract: The axial compression test of HRB500 and ECC rectangular section short column was carried out, and the effect of HRB500 with reinforcement ratio of 1.13% and 2.26% on the stress-strain curve of ECC column was studied. The results show that the ECC column can still maintain good integrity after failure, and the crack width is obviously lower than that of ordinary concrete column. The longitudinal reinforcement of ultra-high strength steel bar ECC column can reach yield strength, and the ultimate bearing capacity and ultimate vertical strain of ECC column are larger than those of ordinary concrete column. The synergy between ultra-high strength steel bar and ECC concrete is obviously better than that of ordinary concrete. The Poisson′s ratio of ECC column gradually decreases as the loading progresses, and then increases to some extent.
汪知文,李碧雄,游杨,等.超高强钢筋ECC柱轴心受压试验研究[J].混凝土与水泥制品,2020(10):51-54.
WANG Z W,LI B X,YOU Y,et al.Experimental Study on Axial Compression of ECC Columns with Ultra-high Strength Reinforced Steel[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(10):51-54.
摘 要:对超高强钢筋HRB500与高延性水泥基复合材料(ECC)矩形截面短柱进行了轴心受压试验,研究了配筋率为1.13%、2.26%的超高强钢筋对ECC应力-应变曲线的影响。结果表明:ECC柱在破坏后依然能保持良好的整体性,且裂缝宽度明显低于普通混凝土柱;超高强钢筋ECC柱的纵向钢筋均达到屈服强度,极限承载力和极限竖向应变均大于普通混凝土试件;超高强钢筋与ECC混凝土之间的协同性明显优于普通混凝土;ECC柱的泊松比随着加载的进行先逐渐变小,然后有一定程度的增加。
Abstract: The axial compression test of HRB500 and ECC rectangular section short column was carried out, and the effect of HRB500 with reinforcement ratio of 1.13% and 2.26% on the stress-strain curve of ECC column was studied. The results show that the ECC column can still maintain good integrity after failure, and the crack width is obviously lower than that of ordinary concrete column. The longitudinal reinforcement of ultra-high strength steel bar ECC column can reach yield strength, and the ultimate bearing capacity and ultimate vertical strain of ECC column are larger than those of ordinary concrete column. The synergy between ultra-high strength steel bar and ECC concrete is obviously better than that of ordinary concrete. The Poisson′s ratio of ECC column gradually decreases as the loading progresses, and then increases to some extent.
版权所有:中国混凝土与水泥制品网 苏ICP备10086386号 网站建设:中企动力 苏州