Experimental. behaviour of concrete-filled stiffened thin-walled steel tubular columns

被引：180
|
作者：
Tao, Zhong [1 ]
Han, Lin-Hai
Wang, Dong-Ye
机构：
[1] Fuzhou Univ, Coll Civil Engn, Fujian 350002, Peoples R China
[2] Tsinghua Univ, Dept Civil Engn, Beijing 100084, Peoples R China
来源：
THIN-WALLED STRUCTURES | 2007年 / 45卷 / 05期
基金：
中国国家自然科学基金;
关键词：
concrete-filled steel tube (CFST); thin walled; columns; local buckling; stiffeners; steel fibre reinforced concrete (SFRC); strength; ductility;
D O I：
10.1016/j.tws.2007.04.003
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An experimental study on the structural behaviour of concrete-filled stiffened thin-walled steel tubular columns is presented in this paper. The stiffening was achieved by welding longitudinal stiffeners on the inner surfaces of the steel tubes. Companion tests were also undertaken on 12 unstiffened concrete-filled steel tubular (CFST) columns, with or without steel fibres in the infill concrete. Tile test results showed that the local buckling of the tubes was effectively delayed by the stiffeners. The plate buckling initially occurred when tile maximum load had almost reached for stiffened specimens, thus they had higher serviceability benefits compared to those of unstiffened ones. Some of tile existing design codes were used to predict the load-carrying capacities of the tested composite columns. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：517 / 527
页数：11
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