GFRP缠绕管-木-钢筋混凝土组合柱轴压性能研究  

Research on the axial compression behaviour of GFRP-wound tube-wood-reinforced concrete composite columns

作　　者：沈叶波 张富宾 徐靖 方海[2] SHEN Yebo;ZHANG Fubin;XU Jing;FANG Hai(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212000,China;College of Civil Engineering,Nanjing Tech University,Nanjing 210000,China)

机构地区：[1]江苏大学土木工程与力学学院,镇江212000 [2]南京工业大学土木工程学院,南京210000

出　　处：《复合材料科学与工程》2023年第10期5-9,共5页Composites Science and Engineering

基　　金：中国博士后科学基金特别资助项目(2021T140031);中国博士后科学基金面上资助项目(2021M690264);江苏大学“青年英才培养计划”资助项目(16JDG016);特种功能防水材料国家重点实验室开放课题(SKWL-2021KF10)。

摘　　要：本文通过试验研究了用玻璃纤维增强复合材料(GFRP)缠绕管约束的木-钢筋混凝土组合柱的轴向压缩性能,并与GFRP布包裹的木-钢筋混凝土组合柱进行比较,分析了各组成部分对组合柱失效模式、承载力、刚度和延性的影响。结果表明:添加木芯的GFRP管约束柱的刚度比添加木芯的外包GFRP布组合柱刚度高36.2%~49.2%,而不同GFRP约束形式对组合柱的承载力和延性无显著影响;木芯的引入使GFRP约束柱的延性提升了23.8%~27.0%;相比于无GFRP约束的组合柱,使用GFRP缠绕管约束组合柱可使柱的承载能力显著提高146.5%~208.6%,延性提高28.4%~56.4%。The axial compression behavior of wood-reinforced concrete composite columns confined with glass fibre reinforced polymer(GFRP)-wound tube was investigated by experiments,and compared with that of GFRP-wrapped composite columns.The effects of each component on the failure mode,bearing capacity,stiffness and ductility of composite columns are analyzed.The results indicated that the stiffness of GFRP tube-restrained composite column with wood core is 36.2%~49.2%higher than that of GFRP-wrapped composite column with wood core,and different GFRP restraint forms have no significant effect on the bearing capacity and ductility of composite columns.The introduction of wood core increased the ductility of GFRP restrained columns by 23.8%~27.0%.Compared with the unbonded combined column,the bearing capacity of GFRP tube-restrained composite column can be significantly increased by 146.5%~208.6%,and the ductility can be increased by 28.4%~56.4%.

关 键 词：轴压性能 GFRP缠绕管 外包GFRP布 组合柱 木芯 复合材料 

分 类 号：TB332[一般工业技术—材料科学与工程]