CFRP-钢管混凝土核心柱的力学性能  

Mechanic behavior of concentrically reinforced of columns concrete filled CFRP-steel tube

作　　者：张常光[1,2] 赵均海[3] 张庆贺[1,2] 

机构地区：[1]同济大学岩土及地下工程教育部重点实验室,上海200092 [2]同济大学地下建筑与工程系,上海200092 [3]长安大学建筑工程学院,陕西西安710061

出　　处：《西安建筑科技大学学报（自然科学版）》2008年第6期830-834,共5页Journal of Xi'an University of Architecture & Technology(Natural Science Edition)

基　　金：教育部博士点基金资助项目(20040710001);陕西省自然科学基金资助项目(2005E204)

摘　　要：在统一强度理论的基础上,分析CFRP-钢管混凝土核心柱的工作机理,提出极限承载力计算时的基本假定,推导了CFRP-钢管混凝土核心轴压短柱的极限承载力公式.将计算结果与文献试验结果进行比较,验证了理论公式的正确性,并分析总套箍指标对承载力和承载力提高幅度的影响.该结果为CFRP-钢管混凝土核心轴压短柱的极限承载力分析提供了一定的理论依据,对实际工程设计有一定的参考价值.By analyzing the work mechanism of the concentrically columns＇ filled CFRP-steel tube, some premises are brought forward, when calculating its ultimate bearing capacity. Based on the unified strength theory, the compressive strength of the core concrete is predicted, and the ultimate bearing capacity formula of concentrically compressed stub columns reinforced by concrete filled circular CFRP-steel tube is deduced. The results of the proposed formula are found in good agreement with experiment results. At last, the effects of total confinement factor on the ultimate bearing capacity and load carrying capacity enhancement ratio are analyzed. This solution has an important practical value for engineering application.

关 键 词：结构工程 CFRP-钢管混凝土核心柱 统一强度理论 极限承载力 套箍指标 

分 类 号：TU393[建筑科学—结构工程]