超强韧性混凝土与GFRP筋黏结性能研究  

Research on bond properties of PP ECC and GFRP bars

作　　者：于明鑫[1] 孙丽[2] 俞家欢[2] 杨泽宇 YU Mingxin;SUN Li;YU Jiahuan;YANG Zeyu(School of Civil Engineering,Shenyang Urban Construction University,Shenyang 110167,China;School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)

机构地区：[1]沈阳城市建设学院土木工程学院,辽宁沈阳110167 [2]沈阳建筑大学土木工程学院,辽宁沈阳110168

出　　处：《混凝土》2023年第6期15-18,25,共5页Concrete

基　　金：国家自然科学基金(51478276);2020年度辽宁省教育厅科学研究一般项目(LJKX202007)。

摘　　要：超强韧性混凝土(PP ECC)与玻璃纤维增强塑料(GFRP)筋均是新型建筑材料,与传统材料相比,其各项机械性能优异,应用前景广阔。研究通过黏结试验,分析了试件的不同的破坏形式,黏结滑移曲线的特点,明确了玻璃纤维增强塑料筋直径、聚丙烯(PP)纤维掺量、GFRP筋黏结长度及材料类型对耗能和黏结性能的影响,最终确定了超强韧性混凝土最佳纤维掺量及其与玻璃纤维增强塑料筋的合理锚固长度计算方法和数值。PP ECC and GFRP bars are both new building materials with excellent mechanical properties compared with traditional materials.The characteristics of bond-slip curve and the influencing factors of bond strength were analyzed through the bond performance test of PP ECC and GFRP bars.The effects of diameter of GFRP bars,PP fiber content,bonding length of GFRP bars and type of material on bonding performance were determined.The optimal fiber content ratio of PP ECC was determined.Determine the reasonable anchorage length calculation method of PP ECC and GFRP bars.

关 键 词：超强韧性混凝土 玻璃纤维增强塑料筋 黏结性能 锚固长度 

分 类 号：TU528.01[建筑科学—建筑技术科学]