FRP-混凝土-钢管组合柱的黏结力学性能研究  

Study on Bond Mechanical Properties of FRP-concrete-steel Composite Columns

作　　者：马兵 钟宇 周奕彤 雷凯文 梁危 MA Bing;ZHONG Yu;ZHOU Yitong;LEI Kaiwen;LIANG Wei(Xinjiang Tower Construction 359 Construction Engineering Co.,Ltd.,Alar 843300,Xinjiang,China;College of Civil Engineering,Sichuan Agricultural University,Dujiangyan 611800,Sichuan,China)

机构地区：[1]新疆塔建三五九建工有限责任公司,新疆阿拉尔843300 [2]四川农业大学土木工程学院,四川都江堰611800

出　　处：《建筑施工》2025年第3期352-356,360,共6页Building Construction

基　　金：四川省自然科学基金项目(2024NSFSC0919);中国施工企业管理协会科研项目(2023-C-001);新疆塔建三五九建工有限责任公司合作课题项目(2322339003)。

摘　　要：新型组合结构FRP-混凝土-钢管组合柱结合了FRP、混凝土、钢材这3种材料的优点,有着广泛的工程应用前景。但“FRP-混凝土”和“混凝土-内钢管”的界面滑移现象导致其力学性能降低甚至失效的问题不容忽视。对FRP-混凝土-钢管组合柱进行推出试验,研究了2种界面协同作用的黏结特性,分析了破坏模式,评估了FRP管径厚比参数对黏结强度的影响。结果表明,极限黏结强度随FRP管厚度增大呈先增大后减小的趋势,剪切作用后的宏观机械咬合力随FRP管厚度增大而逐渐加强。The new composite structure of FRP-concrete-steel composite columns combines the advantages of FRP,concrete,and steel materials,offering broad prospects for engineering applications.However,the interfacial slip phenomenon between the"FRP-concrete"and"concrete-steel tube"interfaces can lead to reduced mechanical performance or even failure,which cannot be overlooked.Push-out tests were conducted on FRP-concrete-steel composite columns to investigate the bonding characteristics of the two interfacial synergistic effects.The failure modes were analyzed,and the influence of the FRP tube's diameter-to-thickness ratio on the bonding strength was assessed.The results indicated that the ultimate bonding strength initially increased and then decreased as the FRP tube thickness increased.The macro mechanical interlocking force after shear action gradually strengthened with the increase in FRP tube thickness.

关 键 词：FRP 组合柱 黏结强度 力学性能 

分 类 号：TU599[建筑科学—建筑技术科学]