内置CFRP圆管的方钢管高强混凝土轴压中长柱极限承载力研究  

Study on Ultimate Bearing Capacity of Middle Long Columns of High Strength Concrete Filled Square Steel Tube with Inner CFRP Circular Tube under Axial Compressive Load

作　　者：葛清蕴[1] 厉彩梅 杨富莲[1] 

机构地区：[1]皖西学院建筑与土木工程学院,安徽六安237012 [2]盖茨胜地汽车水泵产品(烟台)有限责任公司,山东烟台264000

出　　处：《皖西学院学报》2013年第2期86-89,共4页Journal of West Anhui University

基　　金：教育厅高校省级科学研究项目(KJ2012B215)

摘　　要：根据内置CFRP圆管的方钢管高强混凝土的特点,通过引入混凝土强度折减系数和等效约束折减系数,将内置CFRP圆管的方钢管高强混凝土等效为内置CFRP圆管的圆钢管高强混凝土。进而,在统一强度理论的基础上,推导出内置CFRP圆管的方钢管高强混凝土轴压构件的强度承载力。通过引入整体稳定系数,推导出内置CFRP圆管的方钢管高强混凝土轴压中长柱的稳定极限承载力公式。将该公式的计算结果与试验结果进行了比较,结果表明该理论公式是正确可行的。理论公式以期能为工程应用提供帮助。According to the characteristics of high strength concrete filled square steel tube with inner CFRP circular tube, using the introducing concrete strength reduction factor and equivalent restriction factor, high strength concrete filled square steel tube with inner CFRP circular tube becomes high strength concrete filled circular steel tube with inner CFRP circular tube. Then based on unified strength theory, this paper deduced the axial compressive ultimate bearing capacity formula of high strength concrete filled square steel tube with inner CFRP circular tube. And combining the integral stability coefficient, this paper deduced the axial compressive ultimate bearing capacity formula of middle long columns of high strength concrete filled square steel tube with inner CFRP circular tube. Compared the results of the paper with the experiment, both coincide in good condition. The results show that the theoretical formula is correct and viable. The theoretical formula is expected to provide references for the engmeermg.

关 键 词：内置CFRP圆管 方钢管高强混凝土 统一强度理论 极限承载力 

分 类 号：TU39[建筑科学—结构工程]