汪知文1,李碧雄1,游 楊1,廖 橋1,饒 丹2,余 弦2
摘 ? 要:對超高強鋼筋HRB500與高延性水泥基復合材料(ECC)矩形截面短柱進行了軸心受壓試驗,研究了配筋率為1.13%、2.26%的超高強鋼筋對ECC應力-應變曲線的影響。結果表明:ECC柱在破壞后依然能保持良好的整體性,且裂縫寬度明顯低于普通混凝土柱;超高強鋼筋ECC柱的縱向鋼筋均達到屈服強度,極限承載力和極限豎向應變均大于普通混凝土試件;超高強鋼筋與ECC混凝土之間的協同性明顯優于普通混凝土;ECC柱的泊松比隨著加載的進行先逐漸變小,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,游楊,等.超高強鋼筋ECC柱軸心受壓試驗研究[J].混凝土與水泥制品,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.
超高強鋼筋ECC柱軸心受壓試驗研究
汪知文1,李碧雄1,游 楊1,廖 橋1,饒 丹2,余 弦2
摘 ? 要:對超高強鋼筋HRB500與高延性水泥基復合材料(ECC)矩形截面短柱進行了軸心受壓試驗,研究了配筋率為1.13%、2.26%的超高強鋼筋對ECC應力-應變曲線的影響。結果表明:ECC柱在破壞后依然能保持良好的整體性,且裂縫寬度明顯低于普通混凝土柱;超高強鋼筋ECC柱的縱向鋼筋均達到屈服強度,極限承載力和極限豎向應變均大于普通混凝土試件;超高強鋼筋與ECC混凝土之間的協同性明顯優于普通混凝土;ECC柱的泊松比隨著加載的進行先逐漸變小,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,游楊,等.超高強鋼筋ECC柱軸心受壓試驗研究[J].混凝土與水泥制品,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:對超高強鋼筋HRB500與高延性水泥基復合材料(ECC)矩形截面短柱進行了軸心受壓試驗,研究了配筋率為1.13%、2.26%的超高強鋼筋對ECC應力-應變曲線的影響。結果表明:ECC柱在破壞后依然能保持良好的整體性,且裂縫寬度明顯低于普通混凝土柱;超高強鋼筋ECC柱的縱向鋼筋均達到屈服強度,極限承載力和極限豎向應變均大于普通混凝土試件;超高強鋼筋與ECC混凝土之間的協同性明顯優于普通混凝土;ECC柱的泊松比隨著加載的進行先逐漸變小,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.
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