BEHAVIOR OF HIGH STRENGTH CONCRETE FILLED SQUARE STEEL TUBULAR COLUMNS WITH INNER CFRP CIRCULAR TUBE UNDER BI-AXIAL ECCENTRIC LOADING

被引：0
作者：
Li, G. C. [1 ]
Yang, Z. J. [2 ]
Lang, Y. [3 ]
Fang, C. [1 ]
机构：
[1] Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang 110168, Peoples R China
[2] Tianjin Univ, Sch Civil Engn, Tianjin 300072, Peoples R China
[3] Suqian Coll, Dept Bldg Engn, Suqian 223800, Jiangsu, Peoples R China
来源：
ADVANCED STEEL CONSTRUCTION | 2013年 / 9卷 / 03期
基金：
美国国家科学基金会;
关键词：
CFRP tube; Square steel tube; High strength concrete; Bi-axial eccentric load; Finite element analysis (FEA); CAPACITY;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents a theoretical study of high strength concrete filled square steel tubular columns with inner CFRP (carbon fiber-reinforced polymer) circular tube subjected to bi-axial eccentric loading. The new type of composite member is composed of a CFRP inner tube and a outer steel tube with concrete filled in the two tubes. The finite element analysis (FEA) is made by ABAQUS software on the behavior of high strength concrete filled square steel tubular columns with inner CFRP circular tube subjected to bi-axial eccentric loading. The results obtained from the finite element analysis were verified with the experimental results. An extensive parametric study was conducted to investigate the effects of steel yielding strength, concrete strength, steel ratio, slenderness ratio on the interaction curve N/N-u-M/M-u of column subjected to bi-axial eccentric loading. The parametric studies provide information for the development of formula to calculate the bearing capacity. The experimental failure load and the predicted failure load calculated by the formula showed good agreement.
引用
收藏
页码：231 / 246
页数：16
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