CFRP圆钢管混凝土中长柱轴压承载力研究  

Study on axial bearing capacity of concrete-filled circular CFRP-steel middle long columns

作　　者：钟楚珩 冷鋆 周金枝 吴凌霄 付甜甜 周亚栋 ZHONG Chuheng;LENG Jun;ZHOU Jinzhi;WU Lingxiao;FU Tiantian;ZHOU Yadong(College of Civil Engineering,Architecture and Environment,Hubei University of Technology,Wuhan 430068,China;State Key Laboratory for Health and Safety of Bridge Structures,Wuhan 430034,China)

机构地区：[1]湖北工业大学土木建筑与环境学院,湖北武汉430068 [2]桥梁结构健康与安全国家重点实验室,湖北武汉430034

出　　处：《中国测试》2021年第6期83-90,共8页China Measurement & Test

基　　金：桥梁结构健康与安全国家重点实验室(BHSKL19-04-KF);湖北省教研项目(2017314)。

摘　　要：该文在钢管混凝土柱研究的基础上,进一步探究碳纤维布(CFRP)对圆钢管混凝土中长柱轴压承载力极限的影响。制作10根不同CFRP圆钢管混凝土中长柱进行轴压试验,探讨CFRP圆钢管混凝土中长柱的受力过程、破坏形态和轴压极限承载力,分析CFRP层数、混凝土强度、钢管壁厚与长细比对其极限承载力的影响,为CFRP圆钢管混凝土中长柱极限承载力的计算提供参考。结果表明,CFRP层数对圆钢管混凝土中长柱极限承载力提升巨大,混凝土强度、钢管壁厚与长细比的影响相对较小,可为CFRP圆钢管混凝土中长柱的工程应用提供有力支撑。In this paper,based on the research of concrete-filled steel tubular columns,the influence of carbon fiber reinforced plastics(CFRP)on the axial bearing capacity limit of concrete-filled circular steel tubular(CFST)columns is further explored.On the basis of these,the mechanics characteristic,failure mode and ultimate bearing capacity of concrete-filled circular CFRP-steel middle long columns are discussed.The influence of CFRP layers,concrete strength,steel tube wall thickness and slender ratio on the ultimate bearing capacity are analyzed,which provides a reference for the calculation of ultimate bearing capacity of concretefilled circular CFRP-steel middle long columns.The results show that the number of CFRP layers has a great impact on the ultimate bearing capacity of concrete-filled circular CFRP-steel middle long columns,and the influence of concrete strength,wall thickness of steel tube and slender ratio are relatively small,which provides strong support for the engineering application of concrete-filled circular CFRP-steel middle long columns.

关 键 词：碳纤维布(CFRP) 圆钢管混凝土 中长柱 轴压极限承载力 

分 类 号：TU528.1[建筑科学—建筑技术科学] TU393