高强不锈钢绞线网与工程水泥基复合材料黏结锚固性能试验  

Experiment on bonding and anchoring performance between high-strength stainless steel wire mesh and engineered cementitious composites

作　　者：朱俊涛[1] 赵亚楼 李燚 王新玲[1] ZHU Juntao;ZHAO Yalou;LI Yi;WANG Xinling(School of Civil Engineering,Zhengzhou University,Zhengzhou 450001,China;JZFZ Architectural Design Co.Ltd.,Zhengzhou Branch,Zhengzhou 450003,China)

机构地区：[1]郑州大学土木工程学院,郑州450001 [2]成都基准方中建筑设计有限公司郑州分公司,郑州450003

出　　处：《复合材料学报》2020年第7期1731-1742,共12页Acta Materiae Compositae Sinica

基　　金：国家自然科学基金(51708511,U1804137,51879243);河南省自然科学基金(182300410210);河南省交通运输科技计划项目(2020J-2-7)。

摘　　要：为研究高强不锈钢绞线网在工程水泥基复合材料(ECC)中的黏结锚固性能,考虑了横向钢绞线间距、相对锚固长度和钢绞线直径三个影响因素,对设计制作的17组51个试件进行了单边拉拔试验。结果表明:横向钢绞线的设置使黏结破坏具有明显的延性破坏特征;横向钢绞线间距对黏结强度影响不大,但延性强化段长度(延性)随横向钢绞线间距的减小而增大;钢绞线网与ECC的峰值平均黏结应力与锚固长度及钢绞线直径均呈负相关,其延性随钢绞线直径的增大而提高,但随锚固长度的增大而降低。试验结果及分析验证了钢绞线网在ECC中的临界锚固长度计算可采用单根钢绞线的临界锚固长度计算公式。In order to investigate the bonding and anchoring performance of high-strength stainless steel wire mesh in engineered cementitious composites(ECC),three parameters of transverse steel strand spacing,relative anchorage length and steel strand diameter were considered,and a total of 51 specimens in 17 groups were designed and carried out by the uniaxial pull-out test.The results show that the setting of transverse steel strand has obvious ductile failure characteristics.The transverse steel strand spacing has little effect on the bond strength,but the length of ductile strengthening section(ductility)increases with the decreasing of transverse steel strand spacing.The peak average bonding stress between the steel wire mesh and ECC is negatively correlated with the anchorage length and the steel strand diameter.The ductility increases with the increasing of the steel strand diameter,but decreases with the increasing of the anchorage length.The test results and analysis verify that the critical anchorage length calculation of the steel wire mesh in ECC can be calculated by using the critical anchorage length formula of a single steel strand.

关 键 词：高强不锈钢绞线网 工程水泥基复合材料(ECC) 黏结锚固 拉拔试验 黏结-滑移 

分 类 号：TU528.58[建筑科学—建筑技术科学]