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中文摘要：
试验研究了聚乙烯纤维布及其与碳纤维、芳纶纤维布混杂约束混凝土圆柱体的轴心抗压性能,重点分析了其破坏形态、承载力、应力-应变曲线和变形性能。试验结果表明：聚乙烯纤维布可显著改善混凝土柱的变形性能;它与碳纤维布混杂约束混凝土柱的承载力比单一聚乙烯纤维布约束柱提高91%,延性系数提高37%,可见,聚乙烯纤维布与碳纤维布具有良好的协同增强增韧效应。
英文摘要：
Based on the experiment on concrete circular columns confined with polyethylene fiber reinforced polymer（PEFRP） sheets and hybrid fiber sheets of PEFRP sheet and carbon FRP（CFRP） sheet,aramid FRP（AFRP） sheet under axial compression,it is emphasized on analyzing failure configuration,bearing capacity,stress-strain curve and ductility.Results show that PEFRP sheet can significantly improve the ductility of concrete columns;the bearing load of concrete column confined with hybrid sheets of PEFRP sheet and CFRP sheet is 91% larger than that of concrete column confined only with PEFRP sheets,and its ductility coefficient is 37% larger than that of concrete column confined only with CFRP sheets,which indicates that synergistic effect between PEFRP sheet and CFRP sheet is good.
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